Read e-book online Crop physiology PDF

By BIOTOL (Project); Open Universiteit (Heerlen, Netherlands); University of Greenwich

ISBN-10: 075060560X

ISBN-13: 9780750605601

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An undisturbed crop residue can increase capture of both pre- and in-season precipitation in the soil profile that buffer dry spells between rainfall events. Such stored water is also useful in irrigated production, since it can 1. Farming Systems 32 2. , 2011b). One would expect some yield enhancement arising from the gradual increase in the cropland area under conservation tillage in the Corn Belt. The benefits and drawbacks of these conservation practices are further discussed for contrasting cropping systems of China in Chapter 3, and Africa in Chapter 5.

1. Farming Systems 28 2. , 2011; Grassini & Cassman, 2012). 3 Drivers for higher yields and efficiencies Improvement in on-farm crop yield and efficiencies arises from the adoption by producers of (1) genetic (G) technology in the form of newly released maize hybrids and soybean cultivars that have greater genetic yield potential and (2) agronomic (A) technology in the form of crop management practices that enhance the yield of the production environment. e. by reducing the impact of insects or weeds) are considered here as agronomic technologies.

E. slope of regression) decreased and inter-annual yield variation (r2) increased from favorable to less favorable environments for crop production (Nebraska irrigated > Iowa rain-fed > Nebraska rain-fed). 3). 8, left panels). It seems like allocation of the best land to irrigated agriculture, lower applied inputs, later sowing, and lower plant density (in maize) under rain-fed conditions impose a limit to rain-fed crop yields, even in years when growing-season rainfall can support yield above the long-term trend.

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Crop physiology by BIOTOL (Project); Open Universiteit (Heerlen, Netherlands); University of Greenwich

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