Effect of potassium on soil conservation and productivity of maize/cowpea based crop rotations in the north-west Indian Himalayas
Autor: | Kuldeep Singh Dadhwal, Prasant Kumar Mishra, B.N. Ghosh, Om Pal Singh Khola, Ranjan Bhattacharyya |
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Rok vydání: | 2016 |
Předmět: |
Global and Planetary Change
Crop yield Geography Planning and Development food and beverages Geology 04 agricultural and veterinary sciences Soil carbon 010501 environmental sciences Crop rotation 01 natural sciences Soil conditioner Minimum tillage Agronomy 040103 agronomy & agriculture Grain quality 0401 agriculture forestry and fisheries Water-use efficiency Cropping system 0105 earth and related environmental sciences Nature and Landscape Conservation Earth-Surface Processes Mathematics |
Zdroj: | Journal of Mountain Science. 13:754-762 |
ISSN: | 1993-0321 1672-6316 |
DOI: | 10.1007/s11629-013-2885-0 |
Popis: | Plots under conservation tillage may require higher amount of potassium (K) application for augmenting productivity due to its stratification in upper soil layers, thereby reducing K supplying capacity in a medium or long-term period. To test this hypothesis, a field experiment was performed in 2002-2003 and 2006-2007 to study the effect of K and several crop rotations on yield, water productivity, carbon sequestration, grain quality, soil K status and economic benefits derived in maize (Zea mays L)/cowpea (Vigna sinensis L.) based cropping system under minimum tillage (MT).All crops recorded higher grain yield with a higher dose of K (120 kg K2O ha-1) than recommended K (40 kg K2O ha-1). The five years’ average yield data showed that higher K application (120 kg K2O ha-1) produced 16.4% (P |
Databáze: | OpenAIRE |
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