000			02606nab|a22003377a|4500
999			_c61044 _d61036
001			61044
003			MX-TxCIM
005			20211006085201.0
008			191025s2019||||xxu|||p|op||||00||0|eng|d
022			_a1435-0645
024	8		_ahttps://doi.org/10.2134/agronj2018.08.0509
040			_aMX-TxCIM
041			_aeng
100	1		_aLaborde, J.P. _910452
245	1		_aSimulation-based maize–wheat cropping system optimization in the midhills of Nepal
260			_aMadison, WI (USA) : _bAmerican Society of Agronomy, _c2019.
500			_aPeer review
520			_aRainfed maize (Zea mays L.)?wheat (Triticum aestivum L.) production in the midhill region of Nepal is limited in the winter season by cool temperatures, low rainfall, and low fertility. Here, we use the Decision Support System for Agricultural Transfer Cropping System Model (DSSAT-CSM) to simulate potential productivity for conservation agriculture (CA) and conventional practice (CP), contrasting N application rates, and wheat planting dates ranging from 1 September to 15 December under six different weather scenarios in the midhills of Nepal. Total maize plus wheat aboveground biomass increased up to 56% with longer vs. shorter duration maize varieties, but the subsequent dry-season wheat failed 71% of the time after late-planted, long-season maize in areas where mean seasonal temperature was below 14°C. The optimal wheat planting date increased from August to December as seasonal rainfall amount increased. Increasing N application rate in wheat from 50 to 150 kg ha?1 resulted in significant yield and net profit gains for all weather scenarios given current grain and fertilizer prices in the midhills, especially where conditions were cool and rainfall exceeded 400 mm. Principal component analysis of soil and climate parameters indicated that CA benefits most from higher N application rates when conditions are cool and wet due to increased residue retention coupled with slow soil organic matter decomposition.
546			_aText in English
650		7	_2AGROVOC _92569 _aSimulation models
650		7	_aCropping systems _gAGROVOC _2 _91068
650		7	_aWheat _gAGROVOC _2 _91310
650		7	_aMaize _gAGROVOC _2 _91173
651		7	_2AGROVOC _93932 _aNepal
700	1		_aWortmann, C.S. _91830
700	1		_aBlanco-Canqui, H. _910453
700	1		_aMcDonald, A. _8INT3034 _9883 _gSustainable Intensification Program
700	1		_aLindquist, J.L. _97963
773	0		_tAgronomy Journal _gv. 111, no. 5, p. 2569-2581 _dMadison, WI (USA) : American Society of Agronomy, 2019. _x1435-0645 _w444482
942			_cJA _n0 _2ddc