Pub Date : 2023-05-22DOI: 10.1590/1413-7054202347000923
W. M. Furuya, Alberto Brandes, M. Michelato, T. P. Cruz, V. Furuya
ABSTRACT Recent studies have evidenced exogenous enzymes as nutritional tool to elaborate low-polluting aquafeeds. This study aimed to evaluate effects of enzyme complex (EC) on apparent digestibility coefficients (ADC) of energy and nutrients, including amino acids, as well nitrogen (N) and phosphorus (P) loss in pre-growout Nile tilapia (Oreochromis niloticus). Diets without EC (Control) or with EC supplemented at 225 (EC225) or 450 mg/kg diet (EC450) and fed to Nile tilapia (n = 135, 150 ± 20 g) distributed in an entirely randomized design of three treatments and three replicates of 15 fish each. Fish fed diet EC450 showed higher digestibility of energy, protein, amino acids and mineral, and increased digestible energy (DE; +221.25 kcal/kg diet), digestible protein (DP; +10.54 g/kg diet) contents of diets, whereas reduced N (−23.82%) and P (−18.46%) loss relative to fish fed diet control. This study evidenced that EC at 450 mg/kg diet optimizes the ADC of multiple nutrients, including amino acids, and identified its potential to enhance the nutritive value of feeds and elaborate sustainable feeds for Nile tilapia.
{"title":"Commercial enzyme complex (AllzymeR) improves feed digestibility for pre-growout Nile tilapia","authors":"W. M. Furuya, Alberto Brandes, M. Michelato, T. P. Cruz, V. Furuya","doi":"10.1590/1413-7054202347000923","DOIUrl":"https://doi.org/10.1590/1413-7054202347000923","url":null,"abstract":"ABSTRACT Recent studies have evidenced exogenous enzymes as nutritional tool to elaborate low-polluting aquafeeds. This study aimed to evaluate effects of enzyme complex (EC) on apparent digestibility coefficients (ADC) of energy and nutrients, including amino acids, as well nitrogen (N) and phosphorus (P) loss in pre-growout Nile tilapia (Oreochromis niloticus). Diets without EC (Control) or with EC supplemented at 225 (EC225) or 450 mg/kg diet (EC450) and fed to Nile tilapia (n = 135, 150 ± 20 g) distributed in an entirely randomized design of three treatments and three replicates of 15 fish each. Fish fed diet EC450 showed higher digestibility of energy, protein, amino acids and mineral, and increased digestible energy (DE; +221.25 kcal/kg diet), digestible protein (DP; +10.54 g/kg diet) contents of diets, whereas reduced N (−23.82%) and P (−18.46%) loss relative to fish fed diet control. This study evidenced that EC at 450 mg/kg diet optimizes the ADC of multiple nutrients, including amino acids, and identified its potential to enhance the nutritive value of feeds and elaborate sustainable feeds for Nile tilapia.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67204868","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 : 2023-04-14DOI: 10.1590/1413-7054202347017822
Marina Romano Nogueira, P. Paiva, Antônio Rodrigues da Cunha Neto, Michele Valquíria dos Reis, Â. J. P. Nascimento, Caroline de Oliveira Timoteo
ABSTRACT Different products have been tested to increase the vase life of cut flowers after harvest such as the biodegradable films. These products have been used in fruits since the application on the surface may provide the modification of the atmosphere around it, although, there is no information for flowers. The objective was to evaluate the effectiveness of cassava starch films as a postharvest product for Red Torch Ginger inflorescences. On the first experiment, different starch concentrations in the solution were tested and in the second experiment starch, concentrations with plasticizers and adjuvants were evaluated. The application of the biodegradable film in Red Torch stems acted as a barrier to the gases, as observed by their water absorption rate and the maintenance of fresh weight, maintaining postharvest quality up to Day 6. The visual quality was better in the inflorescences treated with 6% starch and in the films without additives. The use of 6% starch films led to lower contents of hydrogen peroxide and lipid peroxidation and higher levels of primary-metabolism macromolecules up to Day 6, delaying senescence and increasing postharvest durability. The addition of glycerol plasticizer to the different film concentrations improved the film resistance characteristics. It is recommended the use of films based on cassava starch at a concentration of 6%. The use of the adjuvant is not essential since it changed the film’s characteristics, leaving it less transparent and more viscous, hindering drying.
{"title":"Starch-based films for Red Torch ginger inflorescences postharvest conservation","authors":"Marina Romano Nogueira, P. Paiva, Antônio Rodrigues da Cunha Neto, Michele Valquíria dos Reis, Â. J. P. Nascimento, Caroline de Oliveira Timoteo","doi":"10.1590/1413-7054202347017822","DOIUrl":"https://doi.org/10.1590/1413-7054202347017822","url":null,"abstract":"ABSTRACT Different products have been tested to increase the vase life of cut flowers after harvest such as the biodegradable films. These products have been used in fruits since the application on the surface may provide the modification of the atmosphere around it, although, there is no information for flowers. The objective was to evaluate the effectiveness of cassava starch films as a postharvest product for Red Torch Ginger inflorescences. On the first experiment, different starch concentrations in the solution were tested and in the second experiment starch, concentrations with plasticizers and adjuvants were evaluated. The application of the biodegradable film in Red Torch stems acted as a barrier to the gases, as observed by their water absorption rate and the maintenance of fresh weight, maintaining postharvest quality up to Day 6. The visual quality was better in the inflorescences treated with 6% starch and in the films without additives. The use of 6% starch films led to lower contents of hydrogen peroxide and lipid peroxidation and higher levels of primary-metabolism macromolecules up to Day 6, delaying senescence and increasing postharvest durability. The addition of glycerol plasticizer to the different film concentrations improved the film resistance characteristics. It is recommended the use of films based on cassava starch at a concentration of 6%. The use of the adjuvant is not essential since it changed the film’s characteristics, leaving it less transparent and more viscous, hindering drying.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67207045","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 : 2023-04-14DOI: 10.1590/1413-7054202347000623
Natália Silva Oliveira, A. Silva, N. D. Tebaldi
ABSTRACT Bacterial spot caused by Xanthomonas spp. (X. vesicatoria, X. euvesicatoria pv. euvesicatoria, X. euvesicatoria pv. perforans, and X. hortorum pv. gardneri) may result in significant losses for tomato crops. Simonkolleite nanoparticles (SK-NPs) has been indicated as a novel approach for plant disease control. The objective of this work was to evaluate SK-NPs (ZnOCl, ZnOCl:Ag, and ZnOCl:Cu at different concentrations) for the in vitro inhibition of X. hortorum pv. gardneri, determining the time of exposure of the products for the bacterial death; the reduction of bacteria recovery on inoculated seeds, and their efficacy to reduce bacterial spot severity in plant. The growth inhibition was evaluated by inhibition zone in culture medium plates, when the diameter of the inhibition zone was measured. The period of exposure of the products to the bacterial suspension tested were 1, 2, 3, 4, or 5 h. Tomato inoculated seeds were treated with SK-NPs. In plant, the preventive and curative effects were evaluated by applying the products two days before or after inoculation, respectively. Disease severity was evaluated and the area under the disease progress curve (AUDPC) was calculated. ZnOCl:Ag, ZnOCl:Cu, and ZnOCl inhibited bacterial growth, and the 5 h exposure time was necessary to reduce bacterial growth. ZnOCl:Ag, and ZnOCl:Cu reduced the bacteria presence in the seeds, and did not affect the seed germination. Both products reduced the AUDPC in the preventive application. The use of SK-NPs ZnOCl:Ag and ZnOCl:Cu showed to be promising to manage tomato bacterial spot.
{"title":"Simonkolleite nanoparticles for seed treatment and control of tomato bacterial spot caused by Xanthomonas hortorum pv. gardneri","authors":"Natália Silva Oliveira, A. Silva, N. D. Tebaldi","doi":"10.1590/1413-7054202347000623","DOIUrl":"https://doi.org/10.1590/1413-7054202347000623","url":null,"abstract":"ABSTRACT Bacterial spot caused by Xanthomonas spp. (X. vesicatoria, X. euvesicatoria pv. euvesicatoria, X. euvesicatoria pv. perforans, and X. hortorum pv. gardneri) may result in significant losses for tomato crops. Simonkolleite nanoparticles (SK-NPs) has been indicated as a novel approach for plant disease control. The objective of this work was to evaluate SK-NPs (ZnOCl, ZnOCl:Ag, and ZnOCl:Cu at different concentrations) for the in vitro inhibition of X. hortorum pv. gardneri, determining the time of exposure of the products for the bacterial death; the reduction of bacteria recovery on inoculated seeds, and their efficacy to reduce bacterial spot severity in plant. The growth inhibition was evaluated by inhibition zone in culture medium plates, when the diameter of the inhibition zone was measured. The period of exposure of the products to the bacterial suspension tested were 1, 2, 3, 4, or 5 h. Tomato inoculated seeds were treated with SK-NPs. In plant, the preventive and curative effects were evaluated by applying the products two days before or after inoculation, respectively. Disease severity was evaluated and the area under the disease progress curve (AUDPC) was calculated. ZnOCl:Ag, ZnOCl:Cu, and ZnOCl inhibited bacterial growth, and the 5 h exposure time was necessary to reduce bacterial growth. ZnOCl:Ag, and ZnOCl:Cu reduced the bacteria presence in the seeds, and did not affect the seed germination. Both products reduced the AUDPC in the preventive application. The use of SK-NPs ZnOCl:Ag and ZnOCl:Cu showed to be promising to manage tomato bacterial spot.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67204767","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 : 2023-03-27DOI: 10.1590/1413-7054202347013622
L. V. Reis, E. R. Carvalho, Venícius Urbano Vilela Reis, Amanda Carvalho Penido Nardelli, Dayliane Bernardes de Andrade, Adhemar Oliveira Junior
ABSTRACT Seed treatment is an important procedure in soybean cultivation and is currently performed in two ways: industrial seed treatment (IST), performed by the seed companies industry, and OnFarm treatment, performedby the producer. The objective of this research was to compare the influence of industrial and OnFarm soybean seed treatment technologies, including the machines and processes, on the occurrence of mechanical damage and the functional quality of treatment. Soybean seeds were subjected to phytosanitary treatments with different processes and machines: (1) industrial treatment with a batch process; (2) industrial treatment with a continuous flow process, (3) OnFarm continuous flow treatment with dosage distribution via fixed-volume doser and seed mixing via worm screw; and (4) controlrepresented by untreated seeds. The occurrence of mechanical damage was evaluated by the sodium hypochlorite test. The functional quality of the treatments was analyzed by seed coating, determined by means of digital image processing; particle detachment (dust-off); and dose effectiveness of thiamethoxam, determined by high-performance liquid chromatography (HPLC). The treatment of soybean seeds in batch or continuous flow industrial systems ensures better seed coating, greater dose effectiveness, less particle detachment and a lower occurrence of mechanical damage compared to OnFarm application technology. The digital processing of high-resolution images is efficient for quantifying the coating of soybean seeds by phytosanitary products. Seed coating is directly related to dose effectiveness.
{"title":"Treatment technologies for soybean seeds: Dose effectiveness, mechanical damage and seed coating","authors":"L. V. Reis, E. R. Carvalho, Venícius Urbano Vilela Reis, Amanda Carvalho Penido Nardelli, Dayliane Bernardes de Andrade, Adhemar Oliveira Junior","doi":"10.1590/1413-7054202347013622","DOIUrl":"https://doi.org/10.1590/1413-7054202347013622","url":null,"abstract":"ABSTRACT Seed treatment is an important procedure in soybean cultivation and is currently performed in two ways: industrial seed treatment (IST), performed by the seed companies industry, and OnFarm treatment, performedby the producer. The objective of this research was to compare the influence of industrial and OnFarm soybean seed treatment technologies, including the machines and processes, on the occurrence of mechanical damage and the functional quality of treatment. Soybean seeds were subjected to phytosanitary treatments with different processes and machines: (1) industrial treatment with a batch process; (2) industrial treatment with a continuous flow process, (3) OnFarm continuous flow treatment with dosage distribution via fixed-volume doser and seed mixing via worm screw; and (4) controlrepresented by untreated seeds. The occurrence of mechanical damage was evaluated by the sodium hypochlorite test. The functional quality of the treatments was analyzed by seed coating, determined by means of digital image processing; particle detachment (dust-off); and dose effectiveness of thiamethoxam, determined by high-performance liquid chromatography (HPLC). The treatment of soybean seeds in batch or continuous flow industrial systems ensures better seed coating, greater dose effectiveness, less particle detachment and a lower occurrence of mechanical damage compared to OnFarm application technology. The digital processing of high-resolution images is efficient for quantifying the coating of soybean seeds by phytosanitary products. Seed coating is directly related to dose effectiveness.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67205849","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 : 2023-03-20DOI: 10.1590/1413-7054202347013722
Ahmed Youssef Abdelnabi Mohamed Elsayed, B. A. Hassan, A. A. Hassanin, H. Zyada, H. Ismail, J. Aguilera
ABSTRACT The extended use of the same variety by farmers over successive generations and reuse of the “seeds” caused natural variability that can be a magnificent opportunity for genetic improvement of tomatillo. Two successive seasons were accomplished to select genotypes with good performance from a heterogeneous population of the local tomatillo “Balady”. The results revealed significant differences in early yield as fruit number and average fruit weight over the original population. Additionally, the results revealed a highly significant correlation between fruit set percentage and total soluble solids (TSS) at 60 days and the marketable yield with fruit length and TSS at 60 days. In conclusion, the path analysis along with heritability and selection genetic gain showed that early yield and fruit set are the two most critical component traits for fruit yield in tomatillo. In addition, the average fruit weight showed a low indirect effect on fruit yield per plant. Twenty promising genotypes were selected as a kernel for pure line development through further breeding programs.
{"title":"Selection parameters for improvement of yield and quality in tomatillo","authors":"Ahmed Youssef Abdelnabi Mohamed Elsayed, B. A. Hassan, A. A. Hassanin, H. Zyada, H. Ismail, J. Aguilera","doi":"10.1590/1413-7054202347013722","DOIUrl":"https://doi.org/10.1590/1413-7054202347013722","url":null,"abstract":"ABSTRACT The extended use of the same variety by farmers over successive generations and reuse of the “seeds” caused natural variability that can be a magnificent opportunity for genetic improvement of tomatillo. Two successive seasons were accomplished to select genotypes with good performance from a heterogeneous population of the local tomatillo “Balady”. The results revealed significant differences in early yield as fruit number and average fruit weight over the original population. Additionally, the results revealed a highly significant correlation between fruit set percentage and total soluble solids (TSS) at 60 days and the marketable yield with fruit length and TSS at 60 days. In conclusion, the path analysis along with heritability and selection genetic gain showed that early yield and fruit set are the two most critical component traits for fruit yield in tomatillo. In addition, the average fruit weight showed a low indirect effect on fruit yield per plant. Twenty promising genotypes were selected as a kernel for pure line development through further breeding programs.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67206071","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 : 2023-03-20DOI: 10.1590/1413-7054202347014922
Brena Coutinho Muniz, Eduarda Lins Falcão, C. B. Bastos Filho, F. S. Silva
ABSTRACT The use of coconut coir dust is a low-cost cultivation practice. Thus, this study aimed to determine the effect of coconut coir dust proportion on foliar secondary metabolite biosynthesis and growth of Passiflora alata Curtis (sweet passion fruit). This Passiflora species possess pharmaceutical relevance and the use of organic-based substrates may promote the production of bioactive compounds in the phytomass. An experiment in a greenhouse was set up with three proportions of coir dust mixed with a commercial substrate for seedlings (CSS) (peat-based) (S1= 1:1:1, CSS: sand: coconut coir dust; S2= 1.5:1.5:1, CSS: sand: coconut coir dust and S3= 1:1, sand: CSS) in seven replicates. After 68 days, growth parameters were measured (height, leaf area, number of leaves, stem diameter, and dry matter), and the harvested leaves were used to prepare ethanolic extracts. The total antioxidant activity and production of phenolics, flavonoids, proanthocyanidins, and saponins were assessed. Unexpectedly, the coir dust supply did not favor the growth and production of secondary metabolites, as the best results were observed in plants grown in S3. Moreover, S3 is efficient in optimizing the growth, metabolite content, and antioxidant capacity of P. alata foliar extracts dispensing coir dust supplementation in the substrate. Therefore, adding coir to CSS is not recommended to enhance the production of secondary metabolites and the growth of P. alata seedlings.
{"title":"Cultivation protocol using a coir-based substrate modulates the concentration of bioactive compounds and the antioxidant activity of Passiflora alata Curtis seedlings","authors":"Brena Coutinho Muniz, Eduarda Lins Falcão, C. B. Bastos Filho, F. S. Silva","doi":"10.1590/1413-7054202347014922","DOIUrl":"https://doi.org/10.1590/1413-7054202347014922","url":null,"abstract":"ABSTRACT The use of coconut coir dust is a low-cost cultivation practice. Thus, this study aimed to determine the effect of coconut coir dust proportion on foliar secondary metabolite biosynthesis and growth of Passiflora alata Curtis (sweet passion fruit). This Passiflora species possess pharmaceutical relevance and the use of organic-based substrates may promote the production of bioactive compounds in the phytomass. An experiment in a greenhouse was set up with three proportions of coir dust mixed with a commercial substrate for seedlings (CSS) (peat-based) (S1= 1:1:1, CSS: sand: coconut coir dust; S2= 1.5:1.5:1, CSS: sand: coconut coir dust and S3= 1:1, sand: CSS) in seven replicates. After 68 days, growth parameters were measured (height, leaf area, number of leaves, stem diameter, and dry matter), and the harvested leaves were used to prepare ethanolic extracts. The total antioxidant activity and production of phenolics, flavonoids, proanthocyanidins, and saponins were assessed. Unexpectedly, the coir dust supply did not favor the growth and production of secondary metabolites, as the best results were observed in plants grown in S3. Moreover, S3 is efficient in optimizing the growth, metabolite content, and antioxidant capacity of P. alata foliar extracts dispensing coir dust supplementation in the substrate. Therefore, adding coir to CSS is not recommended to enhance the production of secondary metabolites and the growth of P. alata seedlings.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67206651","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 : 2023-03-10DOI: 10.1590/1413-7054202347014122
S. Ayas
ABSTRACT The strawberry (Fragaria spp.), one of the most important berry fruit, is cultivated in many regions of Turkey. Considering its agricultural importance, the objective of this study was to determine the interactions of three important factors affecting the yield of strawberries. Measurements of the physical and quality properties of strawberry were carried out in the laboratories of Bursa Uludağ University. In the research, four different irrigation topics, three different fertigation and three different mulching topics (without mulch (M0), with PE black mulch material (M1), with PE transparent mulch matterial (M2) were selected. Drip irrigation method was preferred in order to apply water amounts at different irrigation and fertigation levels. In our study, the highest and lowest irrigation water amounts in both trial years were found to be 380-95 mm and 420-105 mm, respectively, while the highest and lowest actual evapotranspiration values were calculated as 440-220 mm and 465-280 mm, respectively. The maximum and minimum yield values of the study years were calculated as 5.05-18.70 t ha-1 and 1.20-8.7 t ha-1, respectively, from I100F100M1 and I25F50M0 treatments. However, when the reductions in yield and quality losses are evaluated together, despite the reductions in irrigation water and fertigation levels, I75 and F75 topics can be recommended. Also, in mulching treatments, black mulch material (M1) should be chosen over clear mulch material (M1) and no mulch (M0).
{"title":"Different irrigation and fertilization levels and mulching materials on the yield and quality of strawberry","authors":"S. Ayas","doi":"10.1590/1413-7054202347014122","DOIUrl":"https://doi.org/10.1590/1413-7054202347014122","url":null,"abstract":"ABSTRACT The strawberry (Fragaria spp.), one of the most important berry fruit, is cultivated in many regions of Turkey. Considering its agricultural importance, the objective of this study was to determine the interactions of three important factors affecting the yield of strawberries. Measurements of the physical and quality properties of strawberry were carried out in the laboratories of Bursa Uludağ University. In the research, four different irrigation topics, three different fertigation and three different mulching topics (without mulch (M0), with PE black mulch material (M1), with PE transparent mulch matterial (M2) were selected. Drip irrigation method was preferred in order to apply water amounts at different irrigation and fertigation levels. In our study, the highest and lowest irrigation water amounts in both trial years were found to be 380-95 mm and 420-105 mm, respectively, while the highest and lowest actual evapotranspiration values were calculated as 440-220 mm and 465-280 mm, respectively. The maximum and minimum yield values of the study years were calculated as 5.05-18.70 t ha-1 and 1.20-8.7 t ha-1, respectively, from I100F100M1 and I25F50M0 treatments. However, when the reductions in yield and quality losses are evaluated together, despite the reductions in irrigation water and fertigation levels, I75 and F75 topics can be recommended. Also, in mulching treatments, black mulch material (M1) should be chosen over clear mulch material (M1) and no mulch (M0).","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67205923","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 : 2023-03-10DOI: 10.1590/1413-7054202347010922
Mayara Lopes de Freitas Lima, Samara Maria Farias de Souza, Isabelle Ventura de Sá, O. A. Santana
ABSTRACT In the Brazilian Semi-arid Region, extensive livestock farming with ecoproductive management is the most efficient way to maintain and increase the production of goat products (e.g., meat) with of not depleting environmental resources. This set of actions (induced goat migration and pasture closure) is part of Livestock 4.0, in which Industry 4.0 feed areas are efficiently managed using artificial intelligence and deep learning properly monitored by the producer and the consumer. The objective of this work was to identify pasture areas with Opuntia ficus-indica (Mill, Cactaceae) forage palm species for breeding and production of Capra aegagrus-hircus goats (Lineu, Bovidae) using aerial survey images captured by drones classified using deep learning techniques. The methodological steps of the Industry Architecture Reference Model 4.0 were adapted to the field situation (Semi-arid Region) including (A) study area delimitation, (B) image collection (by drones), (C) deep learning training, convolutional neural network (CNN) training, (D) training accuracy analysis, and (E) automatic goat production evaluation and validation. The area classification based on the forage palm density allowed us to measure the environmental degradation caused by livestock. Stimulated goat migration reduced this degradation as well as increased goat biomass and volume production.
{"title":"Deep learning with aerial surveys for extensive livestock hotspot recognition in the Brazilian Semi-arid Region","authors":"Mayara Lopes de Freitas Lima, Samara Maria Farias de Souza, Isabelle Ventura de Sá, O. A. Santana","doi":"10.1590/1413-7054202347010922","DOIUrl":"https://doi.org/10.1590/1413-7054202347010922","url":null,"abstract":"ABSTRACT In the Brazilian Semi-arid Region, extensive livestock farming with ecoproductive management is the most efficient way to maintain and increase the production of goat products (e.g., meat) with of not depleting environmental resources. This set of actions (induced goat migration and pasture closure) is part of Livestock 4.0, in which Industry 4.0 feed areas are efficiently managed using artificial intelligence and deep learning properly monitored by the producer and the consumer. The objective of this work was to identify pasture areas with Opuntia ficus-indica (Mill, Cactaceae) forage palm species for breeding and production of Capra aegagrus-hircus goats (Lineu, Bovidae) using aerial survey images captured by drones classified using deep learning techniques. The methodological steps of the Industry Architecture Reference Model 4.0 were adapted to the field situation (Semi-arid Region) including (A) study area delimitation, (B) image collection (by drones), (C) deep learning training, convolutional neural network (CNN) training, (D) training accuracy analysis, and (E) automatic goat production evaluation and validation. The area classification based on the forage palm density allowed us to measure the environmental degradation caused by livestock. Stimulated goat migration reduced this degradation as well as increased goat biomass and volume production.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67205219","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 : 2023-03-03DOI: 10.1590/1413-7054202347014422
Adriana Pulido Diaz, G. D. Valle, Freddy Forero Longas
ABSTRACT Cassava crops have always been fundamental in human nutrition and industry. Nowadays, the development of new cultivars with specific properties has become a major research area. In this research, amylose-free cassava starch (WXCS) extracted from clone AM206-5 was evaluated with respect to its physicochemical, morphological, and thermorheological properties. The waxy nature of cassava starch was verified (0.54 ± 0.09% w/w amylose), showing a 16.92±0.20 µm average granule size and elliptical or spherical truncated shapes without granule aggregation. There were significant differences in the pasting profiles evaluated, with WXCS being thermally less stable (Breakdown = 698±2 cP) generating less viscous final pastes (731±16 cP) compared to a commercial amylose-free corn starch. The WXCS shear viscosity was determined in a capillary rheometer (Rheoplast®), showing an inverse linear temperature dependence, decreasing by a factor larger than 3 when the temperature changed from 100 to 120 °C, with a pseudoplastic flow described by the power law (n: 0.25-0.40), consistency index (32607 - 6695 Pa.s) and specific mechanical energy (124 - 75 J/g). The extensional viscosity was always higher than the shear viscosity, where increasing the strain rate and temperature enlarged the Trouton number (25-145). Complete WXCS transformation under real process conditions was achieved with a 30% w/w moisture content and 100 °C, which induced full granular integrity loss and crystalline structure destruction. The results confirmed a potential utilization for this new starch to obtain extruded-type food products or to serve as a biothickening agent.
{"title":"Thermorheological characteristics and extrudability aptitude of a new amylose-free cassava starch","authors":"Adriana Pulido Diaz, G. D. Valle, Freddy Forero Longas","doi":"10.1590/1413-7054202347014422","DOIUrl":"https://doi.org/10.1590/1413-7054202347014422","url":null,"abstract":"ABSTRACT Cassava crops have always been fundamental in human nutrition and industry. Nowadays, the development of new cultivars with specific properties has become a major research area. In this research, amylose-free cassava starch (WXCS) extracted from clone AM206-5 was evaluated with respect to its physicochemical, morphological, and thermorheological properties. The waxy nature of cassava starch was verified (0.54 ± 0.09% w/w amylose), showing a 16.92±0.20 µm average granule size and elliptical or spherical truncated shapes without granule aggregation. There were significant differences in the pasting profiles evaluated, with WXCS being thermally less stable (Breakdown = 698±2 cP) generating less viscous final pastes (731±16 cP) compared to a commercial amylose-free corn starch. The WXCS shear viscosity was determined in a capillary rheometer (Rheoplast®), showing an inverse linear temperature dependence, decreasing by a factor larger than 3 when the temperature changed from 100 to 120 °C, with a pseudoplastic flow described by the power law (n: 0.25-0.40), consistency index (32607 - 6695 Pa.s) and specific mechanical energy (124 - 75 J/g). The extensional viscosity was always higher than the shear viscosity, where increasing the strain rate and temperature enlarged the Trouton number (25-145). Complete WXCS transformation under real process conditions was achieved with a 30% w/w moisture content and 100 °C, which induced full granular integrity loss and crystalline structure destruction. The results confirmed a potential utilization for this new starch to obtain extruded-type food products or to serve as a biothickening agent.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67206319","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 : 2023-03-03DOI: 10.1590/1413-7054202347014022
Lucas Esteban Cano-Gallego, J. Estrada, J. Arredondo, G. Correa-Londoño, Ó. Córdoba-Gaona
ABSTRACT The rootstock/scion morphological alterations are one of the limitations in the use of grafting, which has been defined as an incompatibility between these two tissues. However the effect of rootstock-scion interactions on reproductive potential, fruit set, yield efficiency, and avocado fruit quality characteristics are complex and poorly understood. This research aimed to evaluate the fruit growth of avocado cv. Hass in trees with incompatibilities between the rootstock and the graft in the main producing regions in Colombia. The split-plot design with a locality-blocking factor was used. The main plot corresponded to the compatibility and harvest factor, and the subplots to the age of fruit development. The statistical analysis consisted of a mixed linear model for the variables of respiratory rate and morphological growth of the fruit, performing a significant multiple difference test using the adjustment for multiplicity by family through Holm’s correction. The compatibility treatment and the harvest season did not affect the fruit respiratory rate nor the variables of growth and development of cv. Hass. However, the age of development significantly affected both the respiratory rate and the variables of fruit growth.
{"title":"Graft compatibility effects on cv. Hass avocado fruit growth","authors":"Lucas Esteban Cano-Gallego, J. Estrada, J. Arredondo, G. Correa-Londoño, Ó. Córdoba-Gaona","doi":"10.1590/1413-7054202347014022","DOIUrl":"https://doi.org/10.1590/1413-7054202347014022","url":null,"abstract":"ABSTRACT The rootstock/scion morphological alterations are one of the limitations in the use of grafting, which has been defined as an incompatibility between these two tissues. However the effect of rootstock-scion interactions on reproductive potential, fruit set, yield efficiency, and avocado fruit quality characteristics are complex and poorly understood. This research aimed to evaluate the fruit growth of avocado cv. Hass in trees with incompatibilities between the rootstock and the graft in the main producing regions in Colombia. The split-plot design with a locality-blocking factor was used. The main plot corresponded to the compatibility and harvest factor, and the subplots to the age of fruit development. The statistical analysis consisted of a mixed linear model for the variables of respiratory rate and morphological growth of the fruit, performing a significant multiple difference test using the adjustment for multiplicity by family through Holm’s correction. The compatibility treatment and the harvest season did not affect the fruit respiratory rate nor the variables of growth and development of cv. Hass. However, the age of development significantly affected both the respiratory rate and the variables of fruit growth.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67205814","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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