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In situ green manuring of intercropped legumes on the performance of maize - chickpea / safflowere cropping system under rainfed condition

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Title In situ green manuring of intercropped legumes on the performance of maize - chickpea / safflowere cropping system under rainfed condition
 
Creator Sharankumar.A.Biradar
 
Contributor S.M.Hiremath
 
Subject Agronomy
 
Description Field experiments were conducted on black clay soil during kharif and rabi seasons
(2000-01 and 2001-02) at College of Agriculture, Dharwad. Three annual (cowpea,
sunnhemp and dhaincha) and multicut (lucerne, Stylosanthes hamata and S. scabra) legumes
were grown as intercrops in maize in 2:1 row ratio along with sole maize during kharif.
Green manures (GMs) were cut at ground level and incorporated in the field.
Chickpea/safflower were sown during rabi with nine levels of N and P in split-plot design
with three replications.
Among annual GMs, sunnhemp performed better in terms of biomass (2.02 t/ha) and
N yield (60.08 kg/ha) than cowpea and dhaincha. Maize crop didn’t differ significantly with
respect to growth, yield attributes and yield from that of sole maize in normal rainfall year.
But, GMs affected the yield of maize significantly when rainfall was below normal.
Sunnhemp with no-fertilizer to chickpea (10.12 q/ha) was comparable to chickpea with same
GM coupled with 25:50 kg NP/ha (11.44 q/ha) and 12.5:25 kg NP/ha (12.38 q/ha) with
respect to seed yield. Green manuring of sunnhemp recorded significantly higher soil OC,
available N and P after harvest of chickpea.
Among multicut GMs, lucerne performed better in respect of biomass (1.08 t/ha) and
N yield (34.36 kg/ha) than S. hamata and S. scabra on pooled basis. Maize grown with
multicut legumes didn’t differ significantly with respect to growth, yield attributes and yield
than sole maize in normal rainfall year, but was significantly lower in the year of inadequate
rainfall. Lucerne with 20 kg N/ha to safflower (8.91 q/ha) was comparable to safflower with
recommended dose of N and P without green manuring (8.92 q/ha) in terms of seed yield in
the year of favourable rainfall. Green manuring of lucerne recorded significantly higher soil
OC, available N and P after harvest of safflower.
 
Date 2016-10-28T14:08:48Z
2016-10-28T14:08:48Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82753
 
Format application/pdf
 
Publisher UAS, Dharwad