Pub Date : 1999-06-01DOI: 10.1080/09064719950135579
P. Virkajärvi
A comparison of a disk meter, sward stick and capacitance meter was conducted to determine the prediction ability of different methods for estimation of herbage mass (HM) on timothy (Phleum pratense L.)-meadow fescue (Festuca pratensis Huds.) pastures. A total of 714 paired observations was made on each instrument and corresponding cut HM (<1 cm). The variation in HM was adequately explained by linear models. Comparison was made separately for each occasion (DAY) since DAY had a significant influence on the parameter estimates for the sward stick and capacitance meter. The r 2 values varied between 0 and 0.91 and the residual standard deviations (RSD) between 132 and 1151 kg ha-1. The disk meter and the sward stick predicted most accurately HM kg ha-1, while the capacitance meter was the least accurate. The advantage of the disk meter was the stability of model parameters from day to day. The advantage of the sward stick is that the readings can be applied directly into practice. None of the methods is re...
通过对圆盘计、剑棒计和电容计的比较，探讨了不同估算方法对蒂莫西(Phleum pratense L.)-草甸羊茅(Festuca pratensis Huds.)牧场牧草质量(HM)的预测能力。在每台仪器和相应的切割HM (<1 cm)上共进行了714次配对观察。线性模型充分解释了HM的变化。由于DAY对刀杆和电容计的参数估计有显著影响，因此对每种情况(DAY)分别进行了比较。r2值在0 ~ 0.91之间，RSD值在132 ~ 1151 kg ha-1之间。圆盘计和刀杆计预测HM kg ha-1最准确，电容计预测精度最低。圆盘式仪表的优点是模型参数每天都很稳定。使用摇杆的好处是可以将阅读的内容直接应用到实践中。没有一种方法是正确的。
{"title":"Comparison of Three Indirect Methods for Prediction of Herbage Mass on Timothy-Meadow Fescue Pastures","authors":"P. Virkajärvi","doi":"10.1080/09064719950135579","DOIUrl":"https://doi.org/10.1080/09064719950135579","url":null,"abstract":"A comparison of a disk meter, sward stick and capacitance meter was conducted to determine the prediction ability of different methods for estimation of herbage mass (HM) on timothy (Phleum pratense L.)-meadow fescue (Festuca pratensis Huds.) pastures. A total of 714 paired observations was made on each instrument and corresponding cut HM (<1 cm). The variation in HM was adequately explained by linear models. Comparison was made separately for each occasion (DAY) since DAY had a significant influence on the parameter estimates for the sward stick and capacitance meter. The r 2 values varied between 0 and 0.91 and the residual standard deviations (RSD) between 132 and 1151 kg ha-1. The disk meter and the sward stick predicted most accurately HM kg ha-1, while the capacitance meter was the least accurate. The advantage of the disk meter was the stability of model parameters from day to day. The advantage of the sward stick is that the readings can be applied directly into practice. None of the methods is re...","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74237582","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 : 1999-06-01DOI: 10.1080/09064719950135632
L. M. Hansen
Bird cherry-oat aphid is the principal pest of spring barley in Denmark. The time of arrival in the fields is an important element in deciding whether chemical control is needed. This paper describes a regression model managed by climate variables, which incorporate the biology of the bird cherry-oat aphid on its primary host, the bird cherry (Prunus padus L.). In the period 1987-1998, three to nine spring barley fields were monitored annually for the first occurrence of bird cherry-oat aphid. Different climatic variables were analysed in relation to the time of arrival, with a view to constructing a model. The analysis showed good correlation between the date of arrival into the fields after 1 May (D), day-degrees (DD) in February (TF), DD in March (TM), DD in April (TA), precipitation in April (PA) and precipitation in May until 15th (PM) according to the following model: D = 0.61TF - 0.17TM + 0.30TA - 0.46PA + 1.85PM (r 2=0.98, P<0.001, df=51). DD were calculated with a threshold temperature of 3°C. It...
{"title":"Effect of Weather During Spring on the Time of Arrival of Bird Cherry-oat Aphid (Rhopalosiphum padi L.) in Spring Barley (Hordeum vulgare L.) Fields","authors":"L. M. Hansen","doi":"10.1080/09064719950135632","DOIUrl":"https://doi.org/10.1080/09064719950135632","url":null,"abstract":"Bird cherry-oat aphid is the principal pest of spring barley in Denmark. The time of arrival in the fields is an important element in deciding whether chemical control is needed. This paper describes a regression model managed by climate variables, which incorporate the biology of the bird cherry-oat aphid on its primary host, the bird cherry (Prunus padus L.). In the period 1987-1998, three to nine spring barley fields were monitored annually for the first occurrence of bird cherry-oat aphid. Different climatic variables were analysed in relation to the time of arrival, with a view to constructing a model. The analysis showed good correlation between the date of arrival into the fields after 1 May (D), day-degrees (DD) in February (TF), DD in March (TM), DD in April (TA), precipitation in April (PA) and precipitation in May until 15th (PM) according to the following model: D = 0.61TF - 0.17TM + 0.30TA - 0.46PA + 1.85PM (r 2=0.98, P<0.001, df=51). DD were calculated with a threshold temperature of 3°C. It...","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/09064719950135632","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72368876","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 : 1999-06-01DOI: 10.1080/09064719950135605
N. Benkeblia, G. Selselet-Attou
The effects of low temperatures on the break of dormancy of onion bulbs and changes in oligosaccharides, phenolics and peroxidase activity were examined. Cold treatment at 9°C was more effective on break of dormancy than at 0°C, but in both cases cold temperatures caused a rapid break of dormancy. Changes in oligosaccharides and glucose were linked to sprouting stages, with higher concentrations at the onset of sprouting for cold treatments of 9°C for 3 weeks and 0°C for 2 weeks; for the other treatments (9°C for 2 weeks and 0°C for 3 weeks) the high concentrations were reached after sprouting. There was an inverse relation between sprouting on the one hand, and phenolics and peroxidase activity on the other hand. These results emphasized a positive effect of low temperature on breaking dormancy of onion bulbs and the negative role of phenolics and peroxidase on inner bud development.
{"title":"Effects of Low Temperatures on Changes in Oligosaccharides, Phenolics and Peroxidase in Inner Bud of Onion Allium cepa L. During Break of Dormancy","authors":"N. Benkeblia, G. Selselet-Attou","doi":"10.1080/09064719950135605","DOIUrl":"https://doi.org/10.1080/09064719950135605","url":null,"abstract":"The effects of low temperatures on the break of dormancy of onion bulbs and changes in oligosaccharides, phenolics and peroxidase activity were examined. Cold treatment at 9°C was more effective on break of dormancy than at 0°C, but in both cases cold temperatures caused a rapid break of dormancy. Changes in oligosaccharides and glucose were linked to sprouting stages, with higher concentrations at the onset of sprouting for cold treatments of 9°C for 3 weeks and 0°C for 2 weeks; for the other treatments (9°C for 2 weeks and 0°C for 3 weeks) the high concentrations were reached after sprouting. There was an inverse relation between sprouting on the one hand, and phenolics and peroxidase activity on the other hand. These results emphasized a positive effect of low temperature on breaking dormancy of onion bulbs and the negative role of phenolics and peroxidase on inner bud development.","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76461230","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 : 1999-06-01DOI: 10.1080/09064719950135560
H. Koizumi, M. Kontturi, S. Mariko, T. Nakadai, Y. Bekku, T. Mela
Seasonal changes in soil respiration (SR), soil temperature (ST) and soil water content (SWC) were monitored in three different soil types (peat, sand and clay soils) in Finnish agricultural ecosystems. Rates of CO2 emission were measured by the closed chamber method using an infrared gas analyser (IRGA) at intervals of 2-3 weeks from May to October. The seasonal changes in SR were different among the soil types: peat soil, maximum rate (650 mg CO2 m-2 h-1) in summer, positive significant relation between SR and ST and negative relation between SR and SWC; sandy soil, stable SR (300 mg CO2 m-2 h-1) without seasonal changes, positive relation between SR and SWC and no significant relation between SR and ST; clay soil, maximum rate (500 mg CO2 m-2 h-1) in summer, highly positive significant relation between SR and ST and negative relation between SR and SWC. A statistical model was developed to predict the amount of CO2 evolved from the cultivated soils based on the relationships between SR and certain abio...
对芬兰农业生态系统3种不同土壤类型(泥炭土、沙土和粘土)土壤呼吸(SR)、土壤温度(ST)和土壤含水量(SWC)的季节变化进行了监测。从5月到10月，每隔2-3周使用红外气体分析仪(IRGA)采用封闭室法测量CO2排放率。不同土壤类型SR的季节变化不同:泥炭土，夏季最大速率(650 mg CO2 m-2 h-1)， SR与ST呈显著正相关，SR与SWC呈负相关;沙质土壤，稳定的SR (300 mg CO2 m-2 h-1)，无季节变化，SR与SWC呈正相关，SR与ST无显著相关;粘土土壤，夏季最大速率为500 mg CO2 m-2 h-1, SR与ST呈极显著正相关，SR与SWC呈负相关。基于土壤有机质含量与土壤有机质含量之间的关系，建立了预测耕地土壤CO2演化量的统计模型。
{"title":"Soil respiration in three soil types in agricultural ecosystems in Finland","authors":"H. Koizumi, M. Kontturi, S. Mariko, T. Nakadai, Y. Bekku, T. Mela","doi":"10.1080/09064719950135560","DOIUrl":"https://doi.org/10.1080/09064719950135560","url":null,"abstract":"Seasonal changes in soil respiration (SR), soil temperature (ST) and soil water content (SWC) were monitored in three different soil types (peat, sand and clay soils) in Finnish agricultural ecosystems. Rates of CO2 emission were measured by the closed chamber method using an infrared gas analyser (IRGA) at intervals of 2-3 weeks from May to October. The seasonal changes in SR were different among the soil types: peat soil, maximum rate (650 mg CO2 m-2 h-1) in summer, positive significant relation between SR and ST and negative relation between SR and SWC; sandy soil, stable SR (300 mg CO2 m-2 h-1) without seasonal changes, positive relation between SR and SWC and no significant relation between SR and ST; clay soil, maximum rate (500 mg CO2 m-2 h-1) in summer, highly positive significant relation between SR and ST and negative relation between SR and SWC. A statistical model was developed to predict the amount of CO2 evolved from the cultivated soils based on the relationships between SR and certain abio...","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79977492","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 : 1999-06-01DOI: 10.1080/09064719950135597
K. Thorup-Kristensen, J. N. Sørensen
The ability of carrot, leek and white cabbage to deplete the soil inorganic nitrogen (N) pool was studied. All three crops are late-harvested crops with a long growing season, but they have been found to have very different root growth. At their optimal N supply, carrot left 27 kg nitrate-N ha-1 in the top 100 cm of the soil, leek left 87 kg N ha-1 and white cabbage left only 11 kg N ha-1, in accordance with previously published differences in rooting depth among the three crops. Compared at a supply of 160 kg N ha-1, 52, 65 and 4 kg nitrate-N ha-1 was left in the soil by carrot, leek and white cabbage respectively. Apart from an extensive root system, white cabbage also had a much higher N-uptake capacity than the two other crops. The significance of differences in root growth, N-uptake capacity and other factors in determining the ability of the three crops to deplete the soil inorganic N pool is discussed.
研究了胡萝卜、韭菜和大白菜对土壤无机氮库的耗竭能力。这三种作物都是生长季节较长的晚收作物，但它们的根系生长情况却大不相同。在最佳氮素供应下，胡萝卜在土壤顶部100 cm处留下27 kg N - hm -1，韭菜留下87 kg N - hm -1，白卷心菜只留下11 kg N - hm -1，这与之前发表的三种作物的生根深度差异一致。与160 kg N hm -1相比，胡萝卜、韭菜和白甘蓝的土壤硝态氮残留量分别为52、65和4 kg。除了根系粗大外，白甘蓝的吸氮能力也比其他两种作物高得多。讨论了根系生长、氮吸收能力等因素的差异对三种作物耗竭土壤无机氮库能力的影响。
{"title":"Soil Nitrogen Depletion by Vegetable Crops with Variable Root Growth","authors":"K. Thorup-Kristensen, J. N. Sørensen","doi":"10.1080/09064719950135597","DOIUrl":"https://doi.org/10.1080/09064719950135597","url":null,"abstract":"The ability of carrot, leek and white cabbage to deplete the soil inorganic nitrogen (N) pool was studied. All three crops are late-harvested crops with a long growing season, but they have been found to have very different root growth. At their optimal N supply, carrot left 27 kg nitrate-N ha-1 in the top 100 cm of the soil, leek left 87 kg N ha-1 and white cabbage left only 11 kg N ha-1, in accordance with previously published differences in rooting depth among the three crops. Compared at a supply of 160 kg N ha-1, 52, 65 and 4 kg nitrate-N ha-1 was left in the soil by carrot, leek and white cabbage respectively. Apart from an extensive root system, white cabbage also had a much higher N-uptake capacity than the two other crops. The significance of differences in root growth, N-uptake capacity and other factors in determining the ability of the three crops to deplete the soil inorganic N pool is discussed.","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80202120","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}
{"title":"Effects of Different Carbon Dioxide and Ozone Concentrations on Shoot Growth of Phleum pratense L. and Betula pubescens Ehrh. as Influenced by Day Length and Irradiance","authors":"L. Mortensen","doi":"10.1080/09064719950135704","DOIUrl":"https://doi.org/10.1080/09064719950135704","url":null,"abstract":"Seedlings of Phleum pratense L. (timothy) and Betula pubescens Ehrh. (mountain birch) were grown for 37 or 42 days at all combinations of two CO2","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88628535","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 : 1999-03-01DOI: 10.1080/09064719950135687
P. Schuisky, Ann-Sofi Ullström, I. Persson
The long-term stability of some manganese(II) and (III) complexes in soil slurries was studied. The thermodynamically very stable manganese(III) complexes with X,X'-[alkylenebis(iminomethyl)]-2,2'-dihydroxybenzoate, X,X'=2-7 (1-6), were stable in aqueous sandy loam slurries with pH 6 for months and up to 3 weeks in an aqueous slurry of calcareous clay with pH 7.5. The addition of manganese(III) 1-6 complexes to aqueous soil slurries caused no exchange reactions with iron, as observed when the manganese(II)-EDTA complex was added to the same soil slurries. This confirms that the manganese(III) 1-6 complexes are thermodynamically more stable than the corresponding iron(III) complexes.
{"title":"Long-term Stability of Manganese(III) Complexes in Aqueous Soil Slurries","authors":"P. Schuisky, Ann-Sofi Ullström, I. Persson","doi":"10.1080/09064719950135687","DOIUrl":"https://doi.org/10.1080/09064719950135687","url":null,"abstract":"The long-term stability of some manganese(II) and (III) complexes in soil slurries was studied. The thermodynamically very stable manganese(III) complexes with X,X'-[alkylenebis(iminomethyl)]-2,2'-dihydroxybenzoate, X,X'=2-7 (1-6), were stable in aqueous sandy loam slurries with pH 6 for months and up to 3 weeks in an aqueous slurry of calcareous clay with pH 7.5. The addition of manganese(III) 1-6 complexes to aqueous soil slurries caused no exchange reactions with iron, as observed when the manganese(II)-EDTA complex was added to the same soil slurries. This confirms that the manganese(III) 1-6 complexes are thermodynamically more stable than the corresponding iron(III) complexes.","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76230724","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 : 1999-03-01DOI: 10.1080/09064719950135696
L. Mortensen
Seedlings of Betula pubescens Ehrh. (mountain birch) and Phleum pratense L. (timothy) were grown for 42 days under full light or 50% shade in the field at 12°C, and at comparable photosynthetic active radiation (PAR) levels in a greenhouse at 18°C. Plants from the four pretreatments were exposed to 78 nmol mol-1 (ppb) O3 (8 h day-1) under two temperatures (15 and 25°C), two relative air humidities (50 and 80% RH) or two CO2
{"title":"Foliar Injuries Caused by Ozone in Betula pubescens Ehrh. and Phleum pratense L. as Influenced by Climatic Conditions Before and During O3 Exposure","authors":"L. Mortensen","doi":"10.1080/09064719950135696","DOIUrl":"https://doi.org/10.1080/09064719950135696","url":null,"abstract":"Seedlings of Betula pubescens Ehrh. (mountain birch) and Phleum pratense L. (timothy) were grown for 42 days under full light or 50% shade in the field at 12°C, and at comparable photosynthetic active radiation (PAR) levels in a greenhouse at 18°C. Plants from the four pretreatments were exposed to 78 nmol mol-1 (ppb) O3 (8 h day-1) under two temperatures (15 and 25°C), two relative air humidities (50 and 80% RH) or two CO2","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83658795","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 : 1999-03-01DOI: 10.1080/09064719950135678
H. Kirchmann, J. Eriksson, S. Snäll
{"title":"Properties and Classification of Soils of the Swedish Long-Term Fertility Experiments: IV. Sites at Ekebo and Fjärdingslöv","authors":"H. Kirchmann, J. Eriksson, S. Snäll","doi":"10.1080/09064719950135678","DOIUrl":"https://doi.org/10.1080/09064719950135678","url":null,"abstract":"","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88361548","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 : 1999-03-01DOI: 10.1080/09064719950135669
B. Stenberg
The aim of this review is to present a foundation of present knowledge and to describe existing strategies for the development and implementation of monitoring systems for soil quality of arable land, based on soil-quality indicators. In the review viewpoints are discussed on the soil-quality concept, suggested frameworks for its assessment, and possible methods for the selection and evaluation of quality indicators. These sections are in general terms, without emphasis on chemical, physical or biological soil properties. The potential value of including microbiological indicators in a monitoring system is discussed thoroughly. Several possible microbiological indicators are suggested, and their advantages and disadvantages are discussed. Strategies for the selection and sampling of monitoring sites are reviewed, and the treatment of samples before analyses is also discussed. In conclusion, a framework for using microbiological indicators in a Swedish monitoring system is suggested.
{"title":"Monitoring Soil Quality of Arable Land: Microbiological Indicators","authors":"B. Stenberg","doi":"10.1080/09064719950135669","DOIUrl":"https://doi.org/10.1080/09064719950135669","url":null,"abstract":"The aim of this review is to present a foundation of present knowledge and to describe existing strategies for the development and implementation of monitoring systems for soil quality of arable land, based on soil-quality indicators. In the review viewpoints are discussed on the soil-quality concept, suggested frameworks for its assessment, and possible methods for the selection and evaluation of quality indicators. These sections are in general terms, without emphasis on chemical, physical or biological soil properties. The potential value of including microbiological indicators in a monitoring system is discussed thoroughly. Several possible microbiological indicators are suggested, and their advantages and disadvantages are discussed. Strategies for the selection and sampling of monitoring sites are reviewed, and the treatment of samples before analyses is also discussed. In conclusion, a framework for using microbiological indicators in a Swedish monitoring system is suggested.","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78035301","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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