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Library Resource
Severe soil erosion and food security problems are the most important issues in the Loess Plateau of northern China, which are closely related to the over-cultivation and poor management of marginal land resources. Alleviation of these unsustainability problems requires, among many other things, alternative and innovative cropping systems. This paper describes the identification of such cropping systems and their quantitative evaluation.
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Library Resource
Improved management of nitrogen (N) in low N soils is critical for increased land productivity and economic sustainability. We report results of a rainfed rotation experiment, conducted in the Northwest Frontier Province (NWFP), Pakistan, during 1995-1999 to evaluate effects of residue retention and fertiliser N on N2 fixation inputs and yields of a mungbean (Vigna radiata)-wheat (Triticum aestivum) sequence, and a lentil (Lens culinaris)-summer cereal sequence. Mungbean and sorghum (Sorghum bicolor) or maize (Zea mays) were grown in the summers and lentil and wheat in the winters.
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