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INTERCROPPING OF OILSEED AND PULSE CROPS UNDER IRRIGATED CONDITIONS

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Title INTERCROPPING OF OILSEED AND PULSE CROPS UNDER IRRIGATED CONDITIONS
 
Creator LACHAIAH, E
 
Contributor BUCHA REDDY, B
 
Subject INTERCROPPING, OILSEED, PULSE CROPS, UNDER, IRRIGATED, CONDITIONS,
 
Description A field experiment entitled "Intercropping of
oil seed and pulse crops under irrigated conditions" was
conducted during rabi,1983-84 on sandy clay loam soil at
Agricultural college farm, Hyderabad. The objective was
to find out water requirements and to recommend an
effective irrigation schedule for different cropping
systems and to asses yield potential of safflower,
redgram and bengalgram in sole and intercropped
situations. The experiment was laid-out in split-plot
design replicated thrice with four irrigation levels as
main plot treatments AIW/CPE ratio of 0.30 (I ), 0.45
(! 2 ), 0.60 (! 3 ) and 0.75 (! 4 )U and six croppin~ systems
as sub plot treatments Asole safflower (C ), sole
redgram (C 2 ), sole bengalgram (C 3 ), safflower l redgram
(C ), safflower + bengalgram (C ) and redgram +
be~galgram (C8 )U. The depth of wat~r applied at each
irrigation (!W) was 50 mm and number of irrigations given at 1 1 , 12 , 13 and I 4 irrigation
6 and 7 in case of C1 and c5 , 4, 6, 7
c2 , C4 and C8 ana 3, ~.5 and 6
respectively which included two common
levels were 4, 5,
and 8 in case of
in case of c irrigations. 3
Irrigation schedules and cropping systems
significantly influenced the crop growth of safflower,
redgram and bengalgram. All growth characteristics of
safflower were better with IW/CPE ratio of 0.75, while
branching, dry matter (at harvest) and flowers per plant
(at 70 DAS) in bengalgram and total dry matter in
redgram were higher with IW/CPE ratio of 0.60.
Heads/pods per plant at harvest significantly increased
in safflower, redgram and bengalgram with increase in
irrigation level upto IW/CPE ratio of 0.60 but other
yield components were not significant. 1000 seed weight
of bengalgram was reduced with high frequency
irrigations. Yield, LER and harvest index of safflower,
redgram and bengalgram were higher with IW/CPE ratio
of 0.60. Crop growth, yield components and seed/grain
yield were higher in sole crops. Total LER, seed
equivalents of safflower and gross and net monetary
returns were higher in redgram + bengalgram
intercropping system (C 6 ) with irrigations scheduled at
IW/CPE ratio of 0.60. Sole safflower irrigated at
IW/CPE ratio of 0.60 (six irrigations) gave
significantly higher seed equivalent, gross and net
monetary returns over sole crops of redgram and
bengalgram.
Seasonal and daily water use increased with
frequent wettings. Peak periods of water use were
different for crop species and cropping systems.
Evapotranspiration losses were lower in sole crops.
Total quantum of water loss was greater with sole
redgram, because of its long duration followed by sole
safflower. Daily consumptive use of water was higher
in sole safflower followed by sole bengalgram. Et/PEo
and daily consumptive use of water were higher during
peak growth period of crops. The per cent extraction
of moisture was greater from surface layer in high
frequency irrigations and from deeper layers (30-60 em)
improved with increase in magnitude of moisture stress.
Intercropping systems extracted higher per cent of
moisture from deeper layers over sole crops. Field and
crop water use efficiency interms of net monetary
returns were higher in sole safflower when irrigated at
IW/CPE ratio of 0.60 followed by redgram + bengalgram
(C6 ) cropping system.
0.75
Scheduling
resulted in
of irrigation at IW/CPE ratio
higher nitrogen, phosphorus
of
and
potassium uptake in safflower but redgram and bengalgram
extracted more nutrients at harvest with IW/CPE ratio
of e.ae except P2o5 uptake in redgram. Prolonged
stress had detrimental effect on nutrient uptake.
Safflower, redgram and bengalgram as sole crops
extracted higher nitrogen, phosphorus and potassium than
intercropped condition, but total uptake of each
nutrient by both component crops together were much higher compared to their sole cropped condition.
 
Date 2016-08-05T15:23:54Z
2016-08-05T15:23:54Z
1989
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/71113
 
Language en
 
Relation D3053;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD