| 21. | Ploughing leaves very little crop residue on the surface, which otherwise could reduce both wind and water erosion.
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| 22. | Conservation tilling techniques, for example, can leave a large amount of the crop residue on the soil surface.
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| 23. | Spring infections begin with either infected seed or spores that survived in crop residues or from cruciferous weeds.
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| 24. | At the south edge of campus, a biomass gasification plant fueled by crop residues from nearby farms generates steam.
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| 25. | Disease incidence and severity is reducing by rotating to non-grain crops, burying crop residue and using disease free seed.
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| 26. | In addition to this, crop residue, tree browse, and weeds are fed to the animals thereby recycling the nutrients.
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| 27. | Less tillage encourages more organic materials and crop residue to decompose back into the soil, and reduces soil compaction.
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| 28. | Crop residues can be ploughed back into the soil, and different plants leave different amounts of nitrogen, potentially aiding synchronization.
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| 29. | In the early 1990s a biotech company set out to solve a problem : how to destroy crop residue safely.
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| 30. | President Obama learned about MSU and MBI's joint project, AFEX, a pretreatment process for crop residues, and visited the pilot facility.
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