000			03123nab a22003977a 4500
001			G90173
003			MX-TxCIM
005			20170719155345.0
008			121211b |||p||p||||||| |z||| |
022			_aNo (Revista en electrónico)
022	0		_a0378-3774
040			_aMX-TxCIM
090			_aREP-12968
100	1		_aKalra, N.
245	0	0	_aAn approach to bridging yield gaps, combining response to water and other resource inputs for wheat in northern India, using research trials and farmers’ fields data
260			_c2007
340			_aComputer File|Printed
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0378-3774
520			_aThis paper deals with growth and yield of wheat with respect to varying agronomic and resource management practices. Variability of inputs like fertilizer and irrigation as well as differential response of cultivars to these inputs and other agri-management practices coupled with various biotic and abiotic stresses need to be understood in view of current yield stagnation of wheat in the north India, the wheat belt on the country. The reduction in yield arising due to delay in sowing, limited inputs of water and nitrogen, interaction among various biotic and abiotic stresses are discussed on the basis of historic datasets or by using simulation models. Agri-production functions to assess the grain yield of wheat under various biotic and abiotic stresses were developed, which may subsequently help in developing simple crop growth model. Simulated datasets of biomass production and yield indicate that the water production functions based on seasonal evapo-transpiration and transpiration are rather site specific and do not reflect inter-seasonal weather variability. The variabilities in terms of inputs and agronomic management practices and yield of wheat in farmers’ fields in selected locations in north India have been quantified. The possibility of using the wheat growth simulator WTGROWS and InfoCrop has been explored to understand the cultivar diversity of wheat in the study areas. Impact of climatic variability, mainly the variations in the winter rains and abrupt changes in the temperatures during critical growth stages, are different in different production environments. There is a need to collate the information of growth response behaviour for Indian wheat, so that the productivity can be enhanced either by breaking the yield barriers through evolving suitable ideotypes or adopting suitable resource and agronomic management practices.
546			_aEnglish
591			_aElsevier
650	1	0	_aIndia _91156
650	1	0	_aProduction function
650	1	0	_aResource inputs
650	1	0	_aSimulation
650	1	0	_aWater
650	1	0	_aWheat
650	1	0	_aWTGROWS
650	1	0	_aYield gap
700	1		_aChakraborty, D., _ecoaut.
700	1		_aJolly, M, _ecoaut.
700	1		_aKumar, P.R., _ecoaut.
700	1		_aSharma, P.K., _ecoaut.
773	0		_tAgricultural Water Management _n634946 _gv. 93, no. 1-2, p. 54-64
942			_cJA _2ddc
999			_c26891 _d26891