Pub Date : 2018-12-06DOI: 10.1080/01448765.2018.1553122
P. Stolz, Jenifer Wohlers, Gudrun Mende, Tabea Meischner, Roya Bornhütter, Bien’jumin Wolfssohn, U. Geier
ABSTRACT Ionizing irradiation is used to preserve foodstuffs and improve food safety, but it is not permitted for organic products, with the exception for using low doses (less than 500 mGy) for detection purposes (e.g. the presence of foreign objects). Analytical verification of irradiation is possible by detection of 2-alkylcyclobutanones (2-ACBs) in products irradiated with 10 Gy or more. Effects of lower doses of radiation on foodstuffs have not been investigated yet, but in blood, irradiation is detectable even at intensities of 1 mGy. The aim of this preliminary study was to determine whether fluorescence excitation spectroscopy (FES), a method which is very sensitive to small changes in the product, could differentiate between bean seeds and wheat grains exposed to X-rays of different intensities. The bean and wheat grain samples were irradiated at 500 mGy (dose limit value for detection purposes), 50 mGy (very low dose) and 0 mGy (control). Measuring the delayed luminescence by FES, effects of irradiation were found in the wheat samples in the FES-parameter Mw1-r, with the highest values for samples irradiated with 500 mGy, intermediate values for 50 mGy and lowest values for 0 mGy (control) (p < 0.001). The effects were less apparent in bean seeds, with a significant difference (p < 0.05) in the parameter Mw1-r only when comparing irradiation at 500 mGy with the control. The parameter differentiating the irradiation intensities was the same for both seeds and changed in the same way. Thus, systematic dose-specific effects were observed for low-dose irradiation intensities.
{"title":"Low-dose X-ray irradiation of wheat and bean samples detectable by fluorescence excitation spectroscopy (FES)","authors":"P. Stolz, Jenifer Wohlers, Gudrun Mende, Tabea Meischner, Roya Bornhütter, Bien’jumin Wolfssohn, U. Geier","doi":"10.1080/01448765.2018.1553122","DOIUrl":"https://doi.org/10.1080/01448765.2018.1553122","url":null,"abstract":"ABSTRACT Ionizing irradiation is used to preserve foodstuffs and improve food safety, but it is not permitted for organic products, with the exception for using low doses (less than 500 mGy) for detection purposes (e.g. the presence of foreign objects). Analytical verification of irradiation is possible by detection of 2-alkylcyclobutanones (2-ACBs) in products irradiated with 10 Gy or more. Effects of lower doses of radiation on foodstuffs have not been investigated yet, but in blood, irradiation is detectable even at intensities of 1 mGy. The aim of this preliminary study was to determine whether fluorescence excitation spectroscopy (FES), a method which is very sensitive to small changes in the product, could differentiate between bean seeds and wheat grains exposed to X-rays of different intensities. The bean and wheat grain samples were irradiated at 500 mGy (dose limit value for detection purposes), 50 mGy (very low dose) and 0 mGy (control). Measuring the delayed luminescence by FES, effects of irradiation were found in the wheat samples in the FES-parameter Mw1-r, with the highest values for samples irradiated with 500 mGy, intermediate values for 50 mGy and lowest values for 0 mGy (control) (p < 0.001). The effects were less apparent in bean seeds, with a significant difference (p < 0.05) in the parameter Mw1-r only when comparing irradiation at 500 mGy with the control. The parameter differentiating the irradiation intensities was the same for both seeds and changed in the same way. Thus, systematic dose-specific effects were observed for low-dose irradiation intensities.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"151 - 157"},"PeriodicalIF":1.5,"publicationDate":"2018-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1553122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41478619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-16DOI: 10.1080/01448765.2018.1535329
E. Jarienė, D. Levickienė, H. Danilčenko, N. Vaitkevičienė, J. Kulaitienė, V. Jakštas, L. Ivanauskas, M. Gajewski
ABSTRACT The aim of this study was to evaluate the influence of biodynamic (BD) preparations 500 and 501 on the quality of white mulberry (Morus alba L.) leaves. Leaves of the two mulberry cultivars, Plodovaja 3 and Turchanka, were collected in September 2015 and 2016. Quantitative determinations of phenolic, flavonoid and chlorogenic acid concentrations in mulberry leaves were conducted by UPLC methods. The results showed that the total phenolic compounds concentration (TPCC) and total flavonoid concentration (TFC) in the samples ranged from 4483 to 5005 and from 2944 to 3292 mg ChAE 100 g−1 DM, respectively, with leaves of Turchanka containing the highest concentrations and significant differences between the cultivars for treatments with BD application. The major flavonoids in the mulberry leaves were quercetin-acetylhexoside, isoquercitrin, rutin, kaempferol-acetylhexoside and astragalin, and the concentration of these varied depending on the cultivar (apart from for isoquercitrin and astragalin). The results demonstrated that BD preparations influenced the TPCCs of the two cultivars differently. The application of BD preparation 500 significantly increased the total phenolic and flavonoid concentrations in the leaves of Turchanka by 3.62% and 6.1%, respectively. Using the two preparations together (500 + 501) had significant effects on quercetin-acetylhexoside and kaempferol-acetylhexoside accumulation in the mulberry leaves of both cultivars. Application of preparation 501 significantly reduced the TPCC, TFC and chlorogenic acid concentration in the leaves of Plodovaja 3, compared with the control. The results showed that BD preparations had the greatest positive effect on the accumulation of phenolic compounds in the leaves of the Turchanka cultivar.
{"title":"Effects of biodynamic preparations on concentration of phenolic compounds in the leaves of two white mulberry cultivars","authors":"E. Jarienė, D. Levickienė, H. Danilčenko, N. Vaitkevičienė, J. Kulaitienė, V. Jakštas, L. Ivanauskas, M. Gajewski","doi":"10.1080/01448765.2018.1535329","DOIUrl":"https://doi.org/10.1080/01448765.2018.1535329","url":null,"abstract":"ABSTRACT The aim of this study was to evaluate the influence of biodynamic (BD) preparations 500 and 501 on the quality of white mulberry (Morus alba L.) leaves. Leaves of the two mulberry cultivars, Plodovaja 3 and Turchanka, were collected in September 2015 and 2016. Quantitative determinations of phenolic, flavonoid and chlorogenic acid concentrations in mulberry leaves were conducted by UPLC methods. The results showed that the total phenolic compounds concentration (TPCC) and total flavonoid concentration (TFC) in the samples ranged from 4483 to 5005 and from 2944 to 3292 mg ChAE 100 g−1 DM, respectively, with leaves of Turchanka containing the highest concentrations and significant differences between the cultivars for treatments with BD application. The major flavonoids in the mulberry leaves were quercetin-acetylhexoside, isoquercitrin, rutin, kaempferol-acetylhexoside and astragalin, and the concentration of these varied depending on the cultivar (apart from for isoquercitrin and astragalin). The results demonstrated that BD preparations influenced the TPCCs of the two cultivars differently. The application of BD preparation 500 significantly increased the total phenolic and flavonoid concentrations in the leaves of Turchanka by 3.62% and 6.1%, respectively. Using the two preparations together (500 + 501) had significant effects on quercetin-acetylhexoside and kaempferol-acetylhexoside accumulation in the mulberry leaves of both cultivars. Application of preparation 501 significantly reduced the TPCC, TFC and chlorogenic acid concentration in the leaves of Plodovaja 3, compared with the control. The results showed that BD preparations had the greatest positive effect on the accumulation of phenolic compounds in the leaves of the Turchanka cultivar.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"132 - 142"},"PeriodicalIF":1.5,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1535329","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42872968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-10-11DOI: 10.1080/01448765.2018.1526711
S. J. Jang, S. S. Kim, Y. Kuk
ABSTRACT This study was conducted to determine suppression of the anthracnose fungus (Colletotrichum coccodes), causing disease in persimmon trees (Diospyros kaki Thunb), by (1) extracts from various parts of 45 plant species from 27 families obtained using different extraction methods, and (2) selected plant extracts and emulsifiers. Fermentation extracts of Torilis japonica roots and Portulaca oleracea, all above ground parts, as well as ethanol extracts of Rheum palmatum roots and Cinnamomum cassia barks were found to effectively suppress anthracnose, leading to 83%, or more, suppression by 10% plant extracts in laboratory tests. Additionally, anthracnose was suppressed by 100% by 3% brown rice vinegar, 3% powder soap, 5% loess sulphur, and by 5% natural emulsifier-B in a laboratory test. In the field trial with organically grown persimmon trees, treatments with plant extracts used on their own, resulted a reduction of anthracnose by 63% and 51% by 5% fermentation extract of T. japonica and 5% ethanol extract of R. palmatum, respectively, compared with a control. However, in treatments with combinations of plant extracts and emulsifiers, anthracnose was reduced by 79%, 67%, 63% and 56% when treated with 5% fermentation extract of T. japonica + natural emulsifier-B (1%), 5% fermentation extract of T. japonica + loess sulphur (1%), 5% ethanol extract of R. palmatum + natural emulsifier-B (1%), and 5% ethanol extract of R. palmatum + loess sulphur (1%), respectively, compared with the control. Thus, mixtures of plant extracts and emulsifiers may be used to control anthracnose in organic production systems.
{"title":"Effect of plant extracts and emulsifiers on control of anthracnose (Colletotrichum coccodes) in persimmon trees","authors":"S. J. Jang, S. S. Kim, Y. Kuk","doi":"10.1080/01448765.2018.1526711","DOIUrl":"https://doi.org/10.1080/01448765.2018.1526711","url":null,"abstract":"ABSTRACT This study was conducted to determine suppression of the anthracnose fungus (Colletotrichum coccodes), causing disease in persimmon trees (Diospyros kaki Thunb), by (1) extracts from various parts of 45 plant species from 27 families obtained using different extraction methods, and (2) selected plant extracts and emulsifiers. Fermentation extracts of Torilis japonica roots and Portulaca oleracea, all above ground parts, as well as ethanol extracts of Rheum palmatum roots and Cinnamomum cassia barks were found to effectively suppress anthracnose, leading to 83%, or more, suppression by 10% plant extracts in laboratory tests. Additionally, anthracnose was suppressed by 100% by 3% brown rice vinegar, 3% powder soap, 5% loess sulphur, and by 5% natural emulsifier-B in a laboratory test. In the field trial with organically grown persimmon trees, treatments with plant extracts used on their own, resulted a reduction of anthracnose by 63% and 51% by 5% fermentation extract of T. japonica and 5% ethanol extract of R. palmatum, respectively, compared with a control. However, in treatments with combinations of plant extracts and emulsifiers, anthracnose was reduced by 79%, 67%, 63% and 56% when treated with 5% fermentation extract of T. japonica + natural emulsifier-B (1%), 5% fermentation extract of T. japonica + loess sulphur (1%), 5% ethanol extract of R. palmatum + natural emulsifier-B (1%), and 5% ethanol extract of R. palmatum + loess sulphur (1%), respectively, compared with the control. Thus, mixtures of plant extracts and emulsifiers may be used to control anthracnose in organic production systems.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"123 - 131"},"PeriodicalIF":1.5,"publicationDate":"2018-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1526711","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45885863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-17DOI: 10.1080/01448765.2018.1512897
Cláudia Bernardes Ourique, L. Redaelli, C. F. Efrom, Douglas Pedrini
ABSTRACT This study evaluated the effects of applying mineral films on infestations by Anastrepha fraterculus (Wied.) (Dip.: Tephritidae) in Céu and Valencia sweet oranges (Citrus sinensis). The treatments consisted of either kaolin or liquid limestone (calcium carbonate) at 20% concentrations, both with addition of 0.1% Break Thru® adhesive spreader, plus a control treatment (no applications). The spraying was performed in the Céu orchard in Pareci Novo, state of Rio Grande do Sul (RS), Brazil, from March to April 2015, and in the Valencia orchard in Taquari, RS, from May to August 2015. Each tree received 1.5 L of the respective formulations, applied by spraying. Fruits from the canopy and from the ground under each tree were harvested and arranged in containers with sand and stored in a chamber or a greenhouse for 30 days. The sand was then sieved and the fruits opened to remove the larvae and/or pupae. The physical-chemical attributes of the fruits harvested at the last sampling (during fruit harvest) were analysed. In both orchards, fruits collected from the canopy had similar numbers of pupae + larvae per canopy for kaolin and calcium carbonate treatments, and both were lower than in the control treatment. The fruits showed no physiological changes resulting from the treatments.
{"title":"Effects of kaolin and limestone on infestation of South American fruit fly in citrus orchards","authors":"Cláudia Bernardes Ourique, L. Redaelli, C. F. Efrom, Douglas Pedrini","doi":"10.1080/01448765.2018.1512897","DOIUrl":"https://doi.org/10.1080/01448765.2018.1512897","url":null,"abstract":"ABSTRACT This study evaluated the effects of applying mineral films on infestations by Anastrepha fraterculus (Wied.) (Dip.: Tephritidae) in Céu and Valencia sweet oranges (Citrus sinensis). The treatments consisted of either kaolin or liquid limestone (calcium carbonate) at 20% concentrations, both with addition of 0.1% Break Thru® adhesive spreader, plus a control treatment (no applications). The spraying was performed in the Céu orchard in Pareci Novo, state of Rio Grande do Sul (RS), Brazil, from March to April 2015, and in the Valencia orchard in Taquari, RS, from May to August 2015. Each tree received 1.5 L of the respective formulations, applied by spraying. Fruits from the canopy and from the ground under each tree were harvested and arranged in containers with sand and stored in a chamber or a greenhouse for 30 days. The sand was then sieved and the fruits opened to remove the larvae and/or pupae. The physical-chemical attributes of the fruits harvested at the last sampling (during fruit harvest) were analysed. In both orchards, fruits collected from the canopy had similar numbers of pupae + larvae per canopy for kaolin and calcium carbonate treatments, and both were lower than in the control treatment. The fruits showed no physiological changes resulting from the treatments.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"61 - 71"},"PeriodicalIF":1.5,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1512897","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46716084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-08DOI: 10.1080/01448765.2018.1509728
A. Ingver, Ülle Tamm, I. Tamm, S. Tamm, I. Tupits, A. Bender, Reine Koppel, L. Narits, M. Koppel
ABSTRACT The aim of this research was to assess the effect of leguminous pre-crop species on quality characteristics of subsequent spring and winter cereals. The experiment was carried out in an organic crop rotation in north-eastern Europe. The influence of biomass dry matter yield, carbon and nitrogen content of perennial red clover (Trifolium pratense L.), alsike clover (Trifolium hybridum L.), Washington lupin (Lupinus polyphyllus Lindl.), biennial white sweet clover (Melilotus albus L.), annual crimson clover (Trifolium incarnatum L.) and Alexandria clover (Trifolium alexandrinum L.) on protein concentration, bulk density and thousand grain weight of subsequent cereals were assessed. Barley, oats, winter rye, spring and winter wheat were grown in the first post-legume year and barley and oats in the second post-legume year. In the first year after perennial and biennial pre-crops, the protein concentration of the cereals, except for rye, increased by 0.8–2.6 percentage points compared with the control. The largest increases in protein concentration of the cereals were after red and alsike clovers. The legumes increased the bulk density of all of the cereals, while thousand kernel weights were increased only for barley, spring and winter wheat. All the legume species had a positive second-year after-effect on the protein concentration of barley and oats, with the largest effect after red and alsike clover at 1.0–1.3 percentage points. The results showed that all of the leguminous pre-crops were suitable for increasing the quality of cereals. The effect was greater after perennial and biennial species compared with the annual species.
{"title":"Leguminous pre-crops improved quality of organic winter and spring cereals","authors":"A. Ingver, Ülle Tamm, I. Tamm, S. Tamm, I. Tupits, A. Bender, Reine Koppel, L. Narits, M. Koppel","doi":"10.1080/01448765.2018.1509728","DOIUrl":"https://doi.org/10.1080/01448765.2018.1509728","url":null,"abstract":"ABSTRACT The aim of this research was to assess the effect of leguminous pre-crop species on quality characteristics of subsequent spring and winter cereals. The experiment was carried out in an organic crop rotation in north-eastern Europe. The influence of biomass dry matter yield, carbon and nitrogen content of perennial red clover (Trifolium pratense L.), alsike clover (Trifolium hybridum L.), Washington lupin (Lupinus polyphyllus Lindl.), biennial white sweet clover (Melilotus albus L.), annual crimson clover (Trifolium incarnatum L.) and Alexandria clover (Trifolium alexandrinum L.) on protein concentration, bulk density and thousand grain weight of subsequent cereals were assessed. Barley, oats, winter rye, spring and winter wheat were grown in the first post-legume year and barley and oats in the second post-legume year. In the first year after perennial and biennial pre-crops, the protein concentration of the cereals, except for rye, increased by 0.8–2.6 percentage points compared with the control. The largest increases in protein concentration of the cereals were after red and alsike clovers. The legumes increased the bulk density of all of the cereals, while thousand kernel weights were increased only for barley, spring and winter wheat. All the legume species had a positive second-year after-effect on the protein concentration of barley and oats, with the largest effect after red and alsike clover at 1.0–1.3 percentage points. The results showed that all of the leguminous pre-crops were suitable for increasing the quality of cereals. The effect was greater after perennial and biennial species compared with the annual species.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"46 - 60"},"PeriodicalIF":1.5,"publicationDate":"2018-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1509728","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48228310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-31DOI: 10.1080/01448765.2018.1500306
A. Adekiya, T. Agbede, C. Aboyeji, O. Dunsin, V. Simeon
ABSTRACT A field experiment was conducted over two years to evaluate the effects of biochar (B) and poultry manure (PM) on soil properties, leaf nutrient concentrations and root yield of radish. The experiment consisted of 3 × 3 factorial combinations of B (0, 25 and 50 t ha−1) and PM (0, 2.5 and 5.0 t ha−1). Applications of B and PM on their own, and in combination, improved soil physical and chemical properties, leaf nutrient concentrations and yield components of radish. In the second year (2016), application of B on its own increased soil pH and concentrations of organic matter, N, P, K, Ca and Mg, as well as leaf nutrient concentrations and yield, but in the first year (2015) it only increased soil pH and organic matter. In both years, application of B influenced root length of the radish significantly. There was a significant interaction effect of biochar and poultry manure, which was attributed to the ability of the B to increase the efficiency of the utilization of the nutrients in the PM. The combination of 50 t ha−1 B and 5 t ha−1 PM resulted in the highest radish yield, with increases in root weight by 193%, 252% and 252% compared with B alone at 50 t ha−1, at 25 t ha−1 and no application of B or PM, respectively. Therefore, for a short season crop like radish the expected benefit of applying B on its own without PM may not be achieved within the first year.
摘要通过2年的田间试验，研究了生物炭(B)和禽粪(PM)对萝卜土壤性状、叶片养分浓度和根系产量的影响。实验由3 × 3因子组合B(0、25和50 t ha - 1)和PM(0、2.5和5.0 t ha - 1)组成。B和PM单独或联合施用对萝卜的土壤理化性质、叶片养分浓度和产量成分均有改善作用。在第二年(2016年)，B单施增加了土壤pH和有机质、N、P、K、Ca、Mg浓度，提高了叶片养分浓度和产量，而在第一年(2015年)，B单施只增加了土壤pH和有机质。在这两个年份，施用B对萝卜根长均有显著影响。生物炭与禽粪具有显著的互作效应，这是由于B能够提高粪便中养分的利用效率。施用50 t ha - 1 B和5 t ha - 1 PM的萝卜产量最高，与单独施用50 t ha - 1、25 t ha - 1和不施用B和PM相比，根重分别增加了193%、252%和252%。因此，对于像萝卜这样的短季作物，仅使用B而不使用PM的预期效益可能无法在第一年实现。
{"title":"Biochar and poultry manure effects on soil properties and radish (Raphanus sativus L.) yield","authors":"A. Adekiya, T. Agbede, C. Aboyeji, O. Dunsin, V. Simeon","doi":"10.1080/01448765.2018.1500306","DOIUrl":"https://doi.org/10.1080/01448765.2018.1500306","url":null,"abstract":"ABSTRACT A field experiment was conducted over two years to evaluate the effects of biochar (B) and poultry manure (PM) on soil properties, leaf nutrient concentrations and root yield of radish. The experiment consisted of 3 × 3 factorial combinations of B (0, 25 and 50 t ha−1) and PM (0, 2.5 and 5.0 t ha−1). Applications of B and PM on their own, and in combination, improved soil physical and chemical properties, leaf nutrient concentrations and yield components of radish. In the second year (2016), application of B on its own increased soil pH and concentrations of organic matter, N, P, K, Ca and Mg, as well as leaf nutrient concentrations and yield, but in the first year (2015) it only increased soil pH and organic matter. In both years, application of B influenced root length of the radish significantly. There was a significant interaction effect of biochar and poultry manure, which was attributed to the ability of the B to increase the efficiency of the utilization of the nutrients in the PM. The combination of 50 t ha−1 B and 5 t ha−1 PM resulted in the highest radish yield, with increases in root weight by 193%, 252% and 252% compared with B alone at 50 t ha−1, at 25 t ha−1 and no application of B or PM, respectively. Therefore, for a short season crop like radish the expected benefit of applying B on its own without PM may not be achieved within the first year.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"33 - 45"},"PeriodicalIF":1.5,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1500306","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47731406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-07DOI: 10.1080/01448765.2018.1506360
M. Bleidere, L. Legzdiņa, Ülle Tamm, I. Tamm, I. Grunte, I. Ločmele
ABSTRACT The objectives of this study were to identify stable and high-yielding genotypes grown in organically managed fields in Latvia and Estonia and to determine their canopy parameters and susceptibility to seed-borne diseases. Field trials with barley (Hordeum vulgare L.) were conducted using 26 varieties and breeding lines including 20 covered and six hulless genotypes at three locations over three growing seasons. Estonian breeding line 4533.4.3.6 yielded significantly above the average (3.99 t ha–1; LSD = 0.230 t ha–1) and showed wide adaptability as indicated by the coefficient of regression (bi = 1.05), relatively small deviation from regression (s2d = 0.04) and one of the lowest value of ecovalence (Wi = 1.41%). There were significant differences between genotypes according to the canopy parameters measured, such as growth type, early vigour, crop ground cover and canopy height. High-yielding barley genotypes were characterized by more planophile growth habit and shorter canopy height, thus providing good ground cover in the early stages of plant growth. Rasa was the only variety found to have no plants infected with loose smut or leaf stripe, in either of the locations.
摘要本研究的目的是确定拉脱维亚和爱沙尼亚有机管理农田中生长的稳定高产基因型，并确定其冠层参数和对种子传播疾病的易感性。在三个生长季节的三个地点，使用26个品种和育种系（包括20个有盖和6个无壳基因型）对大麦（Hordeum vulgare L.）进行了田间试验。爱沙尼亚育种系4533.4.3.6的产量显著高于平均水平（3.99 t ha–1；LSD=0.230 t ha–2），并表现出广泛的适应性，如回归系数所示（bi=1.05），回归偏差较小（s2d=0.04），生态价值最低（Wi=1.41%）。根据测得的冠层参数，如生长类型、早期活力、作物地面覆盖和冠层高度，基因型之间存在显著差异。高产大麦基因型的特点是具有更多的亲平面生长习惯和较短的冠层高度，从而在植物生长的早期提供了良好的地面覆盖。Rasa是唯一一个在这两个地方都没有感染松散黑穗病或叶条纹的植物的品种。
{"title":"Yield stability, canopy characteristics and seed-borne diseases of spring barley genotypes under organic management","authors":"M. Bleidere, L. Legzdiņa, Ülle Tamm, I. Tamm, I. Grunte, I. Ločmele","doi":"10.1080/01448765.2018.1506360","DOIUrl":"https://doi.org/10.1080/01448765.2018.1506360","url":null,"abstract":"ABSTRACT The objectives of this study were to identify stable and high-yielding genotypes grown in organically managed fields in Latvia and Estonia and to determine their canopy parameters and susceptibility to seed-borne diseases. Field trials with barley (Hordeum vulgare L.) were conducted using 26 varieties and breeding lines including 20 covered and six hulless genotypes at three locations over three growing seasons. Estonian breeding line 4533.4.3.6 yielded significantly above the average (3.99 t ha–1; LSD = 0.230 t ha–1) and showed wide adaptability as indicated by the coefficient of regression (bi = 1.05), relatively small deviation from regression (s2d = 0.04) and one of the lowest value of ecovalence (Wi = 1.41%). There were significant differences between genotypes according to the canopy parameters measured, such as growth type, early vigour, crop ground cover and canopy height. High-yielding barley genotypes were characterized by more planophile growth habit and shorter canopy height, thus providing good ground cover in the early stages of plant growth. Rasa was the only variety found to have no plants infected with loose smut or leaf stripe, in either of the locations.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"110 - 122"},"PeriodicalIF":1.5,"publicationDate":"2018-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1506360","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49113416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-02DOI: 10.1080/01448765.2018.1495575
A. Husain, M. Sundaramari
ABSTRACT The present study, undertaken in the state of Kerala, India, documented 111 Indigenous Crop Production Practices (ICPPs; traditional practices) for banana and most of the practices were registered in the technology dimensions of seeds and seedlings (19%), manuring (19%), and planting in main field (15%). Of the 111 practices, 35 were selected for analysis of rationality, and for knowledge and adoption among farmers. Of the 35 practices, 27 (77%) were rated as rational and the scientific rationale/operational principles were elucidated in the study, revealing a strong scientific base for these practices. The knowledge of and the adoption of these traditional practices by farmers was found to be good. The effectiveness of the practices, as perceived by the farmers who had adopted them, were analysed for 21 practices, and it was found that majority (86%) of the traditional practices for banana production were effective. The study revealed that many indigenous practices for banana were both rational and effective. These practices require urgent attention in order to integrate them with modern technologies, which in turn would promote sustainable crop production and maintenance of ecosystem integrity. Abbreviation: ITK: indigenous technical knowledge
{"title":"Socio-technical system analysis of indigenous crop production practices for banana (Musa spp.)","authors":"A. Husain, M. Sundaramari","doi":"10.1080/01448765.2018.1495575","DOIUrl":"https://doi.org/10.1080/01448765.2018.1495575","url":null,"abstract":"ABSTRACT The present study, undertaken in the state of Kerala, India, documented 111 Indigenous Crop Production Practices (ICPPs; traditional practices) for banana and most of the practices were registered in the technology dimensions of seeds and seedlings (19%), manuring (19%), and planting in main field (15%). Of the 111 practices, 35 were selected for analysis of rationality, and for knowledge and adoption among farmers. Of the 35 practices, 27 (77%) were rated as rational and the scientific rationale/operational principles were elucidated in the study, revealing a strong scientific base for these practices. The knowledge of and the adoption of these traditional practices by farmers was found to be good. The effectiveness of the practices, as perceived by the farmers who had adopted them, were analysed for 21 practices, and it was found that majority (86%) of the traditional practices for banana production were effective. The study revealed that many indigenous practices for banana were both rational and effective. These practices require urgent attention in order to integrate them with modern technologies, which in turn would promote sustainable crop production and maintenance of ecosystem integrity. Abbreviation: ITK: indigenous technical knowledge","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"109 - 96"},"PeriodicalIF":1.5,"publicationDate":"2018-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1495575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48165927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-17DOI: 10.1080/01448765.2018.1498389
K. Bergstrand, K. Löfkvist, H. Asp
ABSTRACT Pot grown herbs are often cultivated as certified organic products, and there is an increasing demand for organically certified ornamental plants. Supplying the required nutrients using organic fertilizers is a challenge with respect to matching the mineralization and thus the availability of dissolved nutrients in the growing medium with plant demand. In experiments, sweet basil and Pelargonium × hortorum were cultivated using two different organic fertilizer strategies and controlled-release mineral nutrients as control treatment. The two organic strategies were, i) blood meal + Baralith® Enslow (a plant-based organic fertilizer), and ii) poultry manure. The availability of dissolved nitrogen was monitored during the crop cycle by under-pressure lysimeter sampling. Plant development parameters were measured along with chlorophyll fluorescence and chlorophyll concentration of leaves. For both organic treatments, nitrate-N availability was low at the beginning of the experiment, whereas ammonium-N was high. During the experiment, ammonium availability decreased at the same time as nitrate availability increased after a few weeks and then declined again by the end of the experiment. The blood meal + Enslow treatment caused poor germination and slow growth in basil. Plant height and fresh weight was also affected by this treatment for basil but not for Pelargonium. Chlorophyll concentration was affected by treatment, with also visually detectable paler leaves in the treatment with poultry manure. There were no differences in chlorophyll fluorescence (Fv/Fm) between treatments, indicating that plants were not stressed in any of the treatments.
{"title":"Dynamics of nitrogen availability in pot grown crops with organic fertilization","authors":"K. Bergstrand, K. Löfkvist, H. Asp","doi":"10.1080/01448765.2018.1498389","DOIUrl":"https://doi.org/10.1080/01448765.2018.1498389","url":null,"abstract":"ABSTRACT Pot grown herbs are often cultivated as certified organic products, and there is an increasing demand for organically certified ornamental plants. Supplying the required nutrients using organic fertilizers is a challenge with respect to matching the mineralization and thus the availability of dissolved nutrients in the growing medium with plant demand. In experiments, sweet basil and Pelargonium × hortorum were cultivated using two different organic fertilizer strategies and controlled-release mineral nutrients as control treatment. The two organic strategies were, i) blood meal + Baralith® Enslow (a plant-based organic fertilizer), and ii) poultry manure. The availability of dissolved nitrogen was monitored during the crop cycle by under-pressure lysimeter sampling. Plant development parameters were measured along with chlorophyll fluorescence and chlorophyll concentration of leaves. For both organic treatments, nitrate-N availability was low at the beginning of the experiment, whereas ammonium-N was high. During the experiment, ammonium availability decreased at the same time as nitrate availability increased after a few weeks and then declined again by the end of the experiment. The blood meal + Enslow treatment caused poor germination and slow growth in basil. Plant height and fresh weight was also affected by this treatment for basil but not for Pelargonium. Chlorophyll concentration was affected by treatment, with also visually detectable paler leaves in the treatment with poultry manure. There were no differences in chlorophyll fluorescence (Fv/Fm) between treatments, indicating that plants were not stressed in any of the treatments.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"143 - 150"},"PeriodicalIF":1.5,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1498389","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48020129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-06DOI: 10.1080/01448765.2018.1492457
J. Fritz, Miriam Athmann, J. Andersen, P. Doesburg, U. Geier, G. Mergardt
ABSTRACT Biocrystallization images are formed in reaction with foods; in the course of the evaporation of the water from food extracts in presence of copper chloride, crystalline structures are formed. The structures are known to reflect food quality, such as degree of decomposition. Individual expert evaluators have suggested that crystallization images of samples from organic production contain fewer signs of decomposition and that this feature can distinguish organic foods from their conventional counterparts. To further assess the scientific merits of this methodology, a panel of nine evaluators was trained in the visual assessment of biocrystallization images and asked to rank the visual Gestalt decomposition level of encoded images of wheat extracts from i) the same production system at five different decomposition stages and ii) organic production systems vs. conventional production systems aged for the same amount of time. The panel was trained by supervised classification on the basis of defined criteria and intra- and inter-personal variation was assessed. Statistical evaluation showed that the panel was highly reliable, and that the method was appropriate for ranking biocrystallization images of five different decomposition levels. Furthermore, images of samples from organic or conventional production systems could be distinguished with high agreement according to their Gestalt decomposition level with fewer signs of decomposition in the images of organic samples. The rank order between the organic systems vs. the conventional systems was significant.
{"title":"Advanced panel training on visual Gestalt evaluation of biocrystallization images: ranking wheat samples from different extract decomposition stages and different production systems","authors":"J. Fritz, Miriam Athmann, J. Andersen, P. Doesburg, U. Geier, G. Mergardt","doi":"10.1080/01448765.2018.1492457","DOIUrl":"https://doi.org/10.1080/01448765.2018.1492457","url":null,"abstract":"ABSTRACT Biocrystallization images are formed in reaction with foods; in the course of the evaporation of the water from food extracts in presence of copper chloride, crystalline structures are formed. The structures are known to reflect food quality, such as degree of decomposition. Individual expert evaluators have suggested that crystallization images of samples from organic production contain fewer signs of decomposition and that this feature can distinguish organic foods from their conventional counterparts. To further assess the scientific merits of this methodology, a panel of nine evaluators was trained in the visual assessment of biocrystallization images and asked to rank the visual Gestalt decomposition level of encoded images of wheat extracts from i) the same production system at five different decomposition stages and ii) organic production systems vs. conventional production systems aged for the same amount of time. The panel was trained by supervised classification on the basis of defined criteria and intra- and inter-personal variation was assessed. Statistical evaluation showed that the panel was highly reliable, and that the method was appropriate for ranking biocrystallization images of five different decomposition levels. Furthermore, images of samples from organic or conventional production systems could be distinguished with high agreement according to their Gestalt decomposition level with fewer signs of decomposition in the images of organic samples. The rank order between the organic systems vs. the conventional systems was significant.","PeriodicalId":8904,"journal":{"name":"Biological Agriculture & Horticulture","volume":"35 1","pages":"21 - 32"},"PeriodicalIF":1.5,"publicationDate":"2018-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/01448765.2018.1492457","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49300798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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