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DEVELOPMENT OF IRRIGATION AND FERTILIZER APPLICATION SCHEDULE FOR WHEAT UNDER DEFICIT WATER SUPPLY SITUATIONS

KrishiKosh

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Title DEVELOPMENT OF IRRIGATION AND FERTILIZER APPLICATION SCHEDULE FOR WHEAT UNDER DEFICIT WATER SUPPLY SITUATIONS
M Tech
 
Creator Pathan Aslam Latif
 
Contributor A. Sarangi
 
Subject irrigation, wheats, yields, crops, land resources, research methods, nitrogen, developmental stages, fertilizers, grain
 
Description t-8618
Quantity and frequency of irrigation or rainfall is often responsible for
variation in growth and yield of wheat crop in arid and semiarid regions. Besides
water, the supply of nitrogen (N) also affects the growth and yield of the crop.
Therefore, optimization of these two inputs provides a favourable condition for crop
growth and productivity. Keeping this in view, an experiment to study the impact of
variable water and nitrogen supply on growth and yield of wheat HD2894 was
conducted in the research farm of the Water Technology Center (WTC), Indian
Agricultural Research Institute (IARI), New Delhi, India. The experiment was carried
out during the rabi seasons of 2010-11 and 2011-12 with three irrigation regimes i.e.
50% deficit irrigation (DI) (W1), 25% DI (W2) and full irrigation (W3) pertaining to
crop water requirement based on soil moisture deficit criterion. Split doses of Nfertilizer
with combinations (i.e. 50%: 50%: 0 (N1) (Conventional practice); 50%:
25%: 25% (N2); 25%: 50%: 25% (N3); 25%: 25%: 50% (N4)) were applied at three
growth stages of wheat crop i.e. basal, crown root initiation (CRI) and tillering,
respectively. The maximum grain yield of 4.95 and 5.14 t/ha in was obtained at full
irrigation (W3) in interaction with (N4) and (N3) treatment during2010-11 and 2011-
12, respectively. The highest yield increase was observed to be 27% with split-N
application of N3 (i.e. 25% basal, 50% CRI and 25% tillering) as compared to the
conventional practice N1 for the year 2011-12. Also, under limiting water supply
situations, application of 25% deficit irrigation can provide yield reduction varying
from 8 to 12% under N3 and N4 spilt-N doses as compared to full irrigation.
Nonetheless, the results obtained from the experiment will assist in deciding the water
and N-fertilizer use strategies for wheat to optimising water use efficiency (WUE)
under deficit and full irrigation regimes.
 
Date 2016-09-23T16:26:16Z
2016-09-23T16:26:16Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/78640
 
Format application/pdf
 
Publisher IARI, DIVISION OF AGRICULTURAL ENGINEERING