000			00595nab|a22002177a|4500
999			_c60318 _d60310
001			60318
003			MX-TxCIM
005			20191128205438.0
008			190403s2019||||ne |||p|op||||00||0|eng|d
022			_a0167-4366
022			_a1572-9680 (Online)
024	8		_ahttps://doi.org/10.1007/s10457-017-0136-z
040			_aMX-TxCIM
041			_aeng
100	1		_aOrtega-Vargas, E. _99003
245	1	0	_aMorphological and physiological responses of Guazuma ulmifolia Lam. to different pruning dates
260			_aDordrecht (Netherlands) : _bSpringer, _c2019.
500			_aPeer review
520			_aPruning is an important management practice for regulating tree structure and physiology, and the timing of pruning can enhance forage production during dry periods of the year. Experimental pruning was performed on Guazuma ulmifolia trees to explain the morphological and physiological changes that occur when they are subjected to programmed defoliation to promote regrowth during the dry season. Three prunings (P-1, P-2 and P-3) were conducted from August to October (rainy season), and four foliage harvesting dates (H-a, H-b, H-c and H-d) occurred from February to April (dry season) over 2years of evaluation. The trees developed similar numbers of branches from pruning and harvesting (P>0.05). Differing predefined pruning height resulted in greater tree height in P-3. Trees in P-1 developed shorter (P<0.005) and vigorous branches, in contrast, those in P-3 had longer and less vigorous branches with long internodes. Nonetheless, trees in P-3 added less height from regrowth (P<0.001) to the total tree height. The first pruning (P-1) induced greater foliage density (P<0.010) and more senescent leaves (P<0.001), but this greater senescence was further affected by later leaf harvests (P=0.001). Trees in P-3 showed greater photosynthetic efficiency (P<0.001) because they retained lower leaf area and more green foliage during the dry season. The timing of pruning modified the morphology and physiology of G. ulmifolia, but leaf senescence was more affected by harvest date during the dry season. This process can be accelerated or slowed, depending on the pattern of rainfall which varies from year to year.
546			_aText in English
650		7	_aPruning _2AGROVOC _99008
650		7	_aBrowse plants _2AGROVOC _99009
650		7	_91913 _aPhotosynthesis _2AGROVOC
650		7	_aRegrowth _2AGROVOC _98557
650		7	_aDry season _2AGROVOC _99010
700	1		_9907 _aBurgueño, J. _gGenetic Resources Program _8INT3239
700	1		_aAvila-Resendiz, C. _99004
700	1		_aCampbell, W.B. _99005
700	1		_aJarillo-Rodriguez, J. _99006
700	1		_aLopez-Ortiz, S. _99007
773	0		_gv. 93, no. 2, p. 461-470 _dDordrecht (Netherlands) : Springer, 2019. _x0167-4366 _tAgroforestry Systems
856	4		_uhttp://libcatalog.cimmyt.org/Download/cis/60318.pdf _yAccess only for CIMMYT Staff
942			_cJA _n0 _2ddc