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Rajkumara S.,All India Coordinated Research Project on Water Management | Gundlur S.S.,All India Coordinated Research Project on Water Management | Neelakanth J.K.,All India Coordinated Research Project on Water Management | Ashoka P.,All India Coordinated Research Project on Water Management
Indian Journal of Agricultural Sciences | Year: 2014

A field experiment was conducted during 2007-08 and 2010-11 at Belvatagi, Karnataka to study the effect of irrigation and crop residue mulching on water use efficiency and yield of maize (Zea mays L.) - chickpea (Cicer arietinum L.) sequence under no tillage condition. In this experiment, three irrigation levels (0.8, 0.6 and 0.4 IW/CPE ratio) were combined with or without crop residue in no tillage situation in split plot design and compared with tillage control. Maize and chickpea grain yields were significantly influenced by irrigation. Application of crop residue did not affect the maize and chickpea but affected the maize - chickpea sequence as a whole. No till maize grain yield was higher with 0.6 IW/CPE ratio with residues (8.68 tonnes/ha) and was on par with tilled maize (8.69 tonnes/ha). This treatment also recorded higher water use efficiency (18.43 kg/ha-mm). No tillage significantly reduced the chickpea grain yield in comparison to normal tillage; but improved the water use efficiency. No tilled maize - chickpea sequence required irrigation at 0.6 IW/CPE ratio with crop residue application @ 5 tonnes/ha for maize and 0.4 IW/CPE with residue for chickpea was found better for higher yield and water use efficiency. Source


Halagalimath S.P.,All India Coordinated Research Project on Water Management | Rajkumara S.,All India Coordinated Research Project on Water Management | Gundlur S.S.,All India Coordinated Research Project on Water Management | Shashidhara G.B.,All India Coordinated Research Project on Water Management | And 2 more authors.
Biochemical and Cellular Archives | Year: 2015

A field experiment was conducted during 2013-14 and 2014-15 at Belvatagi, Karnataka to identify cropping systems which are sustainable and water use efficient under varied water release situations. Four water release situations (July middle, July end, August middle and August end) with six cropping systems [Maize Full season hybrid - chickpea, Maize PEEHM 5 (Pusa Extra Early Hybrid Maize) - chickpea, Maize PEEHM 5-safflower, Sunflower - chickpea, Bt cotton and Maize PEEHM 5-durum wheat] were tested in split plot design for two years. Sowings done with the early release of canal water in July middle resulted in higher maize equivalent yield (94.81, 82.42 and 88.61 q/ha respectively) and decreased with delay in water release. Water use efficiency (11.55 kg/ha mm), gross returns (Rs. 1,16,080/ha), net returns (Rs. 68,580/ha) and BC ratio (2.48) were also better in July middle release. Full season maize hybrid - chickpea cropping system gave the higher maize equivalent yield in both the years and also on pooled basis over other cropping systems. The same system was also efficient in terms of water use efficiency and economics. Source

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