ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Distribution of nitrates in soil profiles under eight different crop rotations was studied after the harvest of various constituent crops. Nitrate distribution patterns at different dates reveal that maximum leaching loss of nitrates occurs from rotations consisting of heavily fertilized shallow rooted crops like potato. Wheat and maize, in a rotation reduce nitrate leaching to deeper soil layers because of their deep and extensive rooting systems. In rainy season, when maximum movement of nitrates occurs in the profile, raising of deep rooted crops like maize leaves for leaching only a small amount of nitrates as compared to crops like groundnut and soybean with shallow rooting systems and low N-requirement. Summer season crops like moong, cowpeas and maize (fodder), do not alter nitrate distribution patterns, unless a large amount of nitrates is present in the profile prior to their sowing.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00011028
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