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EFFECT OF GREEN MANURING, SPACING AND NITROGEN LEVELS ON PRODUCTIVITY OF GREENGRAM-SAFFLOWER SEQUENCE

KrishiKosh

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Title EFFECT OF GREEN MANURING, SPACING AND NITROGEN LEVELS ON PRODUCTIVITY OF GREENGRAM-SAFFLOWER SEQUENCE
 
Creator VENKATARAVANA NAYAKA G. V.
 
Contributor Dr. G. SOMANAGOUDA
 
Subject null
 
Description A field experiment on “Effect of green manuring, spacing and nitrogen levels on productivity of greengram-safflower sequence” was conducted at Agriculture Research Station, Annigeri, UAS, Dharwad during kharif and rabi seasons of 2014-15 under rainfed condition. The total annual rainfall between April 2014 to May 2015 was 841.7 mm with 52 rainy days which was 175.8 mm higher than the average of 35 years (1978-2013). The experiment was laid out in a split-split plot design replicated thrice with 18 treatment combinations. Main plots consisted of three treatments, greengram for green manuring and greengram as a dual purpose both grown during kharif and one fallow. Succeeding safflower was sown during rabi season with two spacing of 45 cm x 20 cm and 60 cm x 30 cm as sub plots and three nitrogen levels 20, 30 and 40 kg N/ ha as sub-sub plot.
Incorporation of greengram as a green manure resulted significantly the highest safflower seed yield (12.92 q/ha). While the lowest safflower seed yield was recorded in fallow (11.09 q/ha), however the greengram as a dual purpose was on par with greengram as a green manuring (12.04 q/ha). Safflower yield was 16.50 per cent in greengram as a green manuring and 8.57 per cent higher in greengram as a dual purpose compared to fallow- safflower system. Between the spacings, significantly higher seed yield was observed in 60 cm x 30 cm (12.77 q/ha) spacing than the 45 cm x 20 cm (11.26 q/ha) spacing, which was 13.41 per cent higher in 60 cm x 30 cm compared to 45 cm x 20 cm. Among the different nitrogen levels, significantly the highest seed yield was observed at 40 kg N/ha (14.42 q/ha) over the 30 kg N/ha (11.31 q/ha) and 20 kg N/ha (10.32 q/ha). And this was 39.72 per cent at 40 kg N/ha and 9.6 per cent at 30 kg N/ha higher compared to 20 kg N/ha. Among the green manure treatments greengram as a dual purpose recorded significantly highest net returns (35362.60 Rs/ha) and B:C ratio (2.53). This indicates the possibility of growing safflower at wider spacing with application of only nitrogen with in situ green manuring without affecting its productivity and profitability under normal or above normal rainfall years.
 
Date 2018-01-30T11:07:03Z
2018-01-30T11:07:03Z
2015-06
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/5810040102
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Dharwad