000			02359naa a22003257a 4500
001			G96983
003			MX-TxCIM
005			20240321145112.0
008			240321s2012 mx ||||| |||| 00| 0 eng d
020			_a978-970-648-181-8
040			_aMX-TxCIM
041			_aeng
090			_aCIS-6786
100	1		_aOrtiz-Monasterio, I. _gFormerly Sustainable Intensification Program _gFormerly Integrated Development Program _gFormerly Sustainable Agrifood Systems _8INT1421 _9827
245	1	0	_aChapter 3. Nitrogen and phosphorus use efficiency
260			_aMexico, D.F. : _bCIMMYT, _c2012.
520			_aGlobally, the nitrogen use efficiency of wheat is only 35%. This low efficiency means that a large proportion of the N that is applied by farmers is lost, increasing the cost of production and having important negative consequences on the environment. The efficiency of P fertilizer ranges from around 10 to 30% in the year that it is applied. Breeding and agronomic management are the two main strategies that can help improve nutrient use efficiency. Characterizing wheat germplasm for uptake and utilization efficiency will be important to better understand the mechanisms associated with improved efficiency. If uptake is the dominant trait then root characteristics such as root length density, root depth, the production of root exudates or the ability of the roots to associate with vesicular-arbuscular mycorrhiza (VAM) should be analyzed. In contrast, if utilization efficiency is the most important trait, then harvest index and biomass production efficiency should be studied. T he breakup of nutrient use efficiency into uptake and utilization should also facilitate the identification of molecular markers that can be later used in a breeding program.
536			_aConservation Agriculture Program
546			_aText in English
594			_aINT1421
595			_aCSC
650		7	_2AGROVOC _930861 _aNitrogen-use efficiency
650		7	_2AGROVOC _95314 _aPhosphorus
650		7	_2AGROVOC _91310 _aWheat
650		7	_2AGROVOC _91191 _aNutrient uptake
700			_aManske, G.G.B. _97314
700	1		_997 _aGinkel, M. Van
773			_dMexico : CIMMYT, 2012. _gp. 33-42 _tWheat physiological breeding I : interdisciplinary approaches to improve crop adaptation _wG96140 _z978-607-95844-0-5 (Online) _z978-970-648-181-8 (Print)
942			_cBP _2ddc _n0
999			_c8406 _d8406