Use of weeds as a nitrogen resource with slashing and mulching management in no-tillage with soybean crop
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- SANGAT Binay
- Yokohama National University
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- KANEKO Nobuhiro
- Fukushima University
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- SAKURA Akio
- Meiji University
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- SUZUKI Jun-Ichiro
- Tokyo Metropolitan University
Bibliographic Information
- Other Title
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- ダイズの不耕起草生栽培における刈り敷きによる窒素源としての雑草利用
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Description
<p>Weeds are one of the major challenges during the adoption of conservation agriculture system due to resource competition with crops. Sustainable control and utilization of weed is still an unexplored territory. We examined how slashing and mulching management was useful for weed control in a one-year soybean study. No-tillage with weed mulch (NTW) follows the principles of conservation agriculture system. Here, naturally occurring weeds on the farm are grown together with the crops then the weeds are manually slashed and used as a green mulch. We slashed the weeds with three different frequencies i.e. slashing zero (S0), once (S1) and twice (S2) during the cultivation of soybean crops and calculated the nitrogen release from the slashed weeds. S1 and S2 yielded similar amount of soybean which was twice the amount in S0. Increase in slashing frequency and mulching increased the soil carbon and nitrogen concentration, suggesting nitrogen release from weeds to soil. Weed slashing and mulching also increased the soil microbial biomass. Appropriate frequency and timing of weed slashing and mulching can be a useful tool to sustain crop growth under low input management.</p>
Journal
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- Japanese Journal of Organic Agriculture Science
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Japanese Journal of Organic Agriculture Science 12 (1), 71-81, 2020-07-31
THE JAPANESE SOCIETY OF ORGANIC AGRICULTURE SCIENCE
