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Single vs. double cropping under two levels of fertilization with and without irrigation
Ist Teil von
Communications in soil science and plant analysis, 1979-01, Vol.10 (10), p.1279-1289
Ort / Verlag
Taylor & Francis Group
Erscheinungsjahr
1979
Link zum Volltext
Quelle
Taylor & Francis Journals Auto-Holdings Collection
Beschreibungen/Notizen
A corn-small grain cropping sequence resulted in a greater total grain yield than corn or small grain alone or grain sorghum double cropped with small grain. Drought restricted yield responses to N, P and K in non-irrigated plots but under irrigation grain yield for each cropping sequence was directly related to fertilizer applied. All fertilizer treatments increased soil acidity. Phosphorus and K applied at 26 and 50 kg/ha, respectively for each crop in the sequence maintained P and K levels in the soil. After three years, the high rate of fertilizer (87 and 166 kg/ha of P and K, respectively) resulted in greater soil P and K values than the low rate of fertilizer.