Repeated use of green-manure catch crops in organic cereal production – grain yields and nitrogen supply
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چکیده
منابع مشابه
Effects of green manure crops and tillage practice on maize and rice yields and soil properties
Improper tillage with no manure may cause a range of undesirable processes (destruction of soil structure, accelerate erosion, depletion of organic matter and fertility). A field experiment was conducted to observe the change in soil properties after incorporation of green manure crops and to find out the residual effect of green manure crops along with tillage on maize and rice yields during 2...
متن کاملImproving Nitrogen Use Efficiency in Cereal Grain Production with Optical Sensing and Variable Rate Application
and 10% in corn (Hilton et al., 1994). Fertilizer N losses due to surface runoff range between 1 and 13% In 2001, N fertilizer prices nearly doubled as a result of increased (Blevins et al., 1996; Chichester and Richardson, 1992). natural gas prices. This was further troubling when considering that the world N use efficiency (NUE) in cereal grain production averages Urea fertilizers applied to ...
متن کاملImproving Nitrogen Use Efficiency for Cereal Production
found, had they considered N derived from the soil (Keeney, 1982; van der Ploeg et al., 1997). Using the Worldwide, nitrogen use efficiency (NUE) for cereal production same references and assumptions in Table 1, cereal (wheat, Triticum aestivum L.; corn, Zea mays L.; rice, Oryza sativa L. and O. glaberrima Steud.; barley, Hordeum vulgare L.; sorghum, NUEs are 42 and 29% in developed and develop...
متن کاملSoil Phosphatase Activity and Phosphorus Content as Influenced by Catch Crops Cultivated as Green Manure
In a 3-year experiment, the effect of catch crop management [catch crop incorporated in autumn (A) or mulched (B) vs plots without a catch crop (C)] on soil acid (PAC) and alkaline (PAL) phosphatase activities as well as on the available phosphorus content (PAVAIL) were investigated on typical Alfisol. The catch crops were sown at the beginning of August and ploughed in the autumn in 2008, 2009...
متن کاملUse of Green Manure Crops in Control of Hirschmanniella mucronata and H. oryzae in Irrigated Rice.
Four field experiments were conducted to study the effect of Sesbania rostrata and Aeschynomene afraspera as rotational and green manure crops on the population dynamics of Hirschmanniella mucronata and H. oryzae, and subsequent rice yields. The sequential cropping of the legumes with rice controlled both nematode species. In two experiments, yield of rice was related to the nematode population...
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ژورنال
عنوان ژورنال: Acta Agriculturae Scandinavica, Section B - Plant Soil Science
سال: 2011
ISSN: 0906-4710,1651-1913
DOI: 10.1080/09064711003655509