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008			151020t2010 xxu||||| |||| 00| 0 eng d
022			_a0167-4366
040			_aCR-TuBCO _cCR-TuBCO _bEspañol
041			_aeng
100	1		_996938 _aMoser, G. _eautor/a
100	1		_986259 _aLeuschner, C. _eautor/a
100	1		_977768 _aHertel, D.
100	1		_978518 _aHölscher, D. _eautor/a
100	1		_984353 _aKöhler, M. _eautor/a
100	1		_985957 _aLeitner, D. _eautor/a
100	1		_994089 _aMichalzik, B. _eautor/a
100	1		_9106931 _aPrihastanti, E. _eautor/a
100	1		_9124626 _aTjitrosemito, S. _eautor/a
100	1		_9117358 _aSchwendenmann, L. _eautor/a
245	1	0	_aResponse of cocoa trees (Theobroma cacao) to a 13-month desiccation period in Sulawesi, Indonesia
260			_aBerlín (Alemania): _bSpringer, _c2010
270			_aSan José, C.R.
300			_a17 páginas: _b8 figuras, 3 tablas
504			_aIncluye 41 referencias bibliográficas en las páginas 186-187
520			_aIn South-east Asia, ENSO-related droughts represent irregularly occurring hazards for agroforestry systems containing cocoa which are predicted to increase in severity with expected climate warming. To characterize the drought response of mature cocoa trees, we conducted the Sulawesi Throughfall Displacement Experiment in a shaded (Gliricidia sepium) cocoa agroforestry system in Central Sulawesi, Indonesia. Three large sub-canopy roofs were installed to reduce throughfall by about 80% over a 13-month period to test the hypotheses that (i) cocoa trees are sensitive to drought due to their shallow fine root system, and (ii) bean yield is more sensitive to drought than leaf or stem growth. As 83% of fine root (diameter <2 mm) and 86% of coarse root biomass (>2 mm) was located in the upper 40 cm of the soil, the cocoa trees examined had a very shallow root system. Cocoa and Gliricidia differed in their vertical rooting patterns, thereby reducing competition for water. Despite being exposed for several months to soil water contents close to the conventional wilting point, cocoa trees showed no significant decreases in leaf biomass, stem and branch wood production or fine root biomass. Possible causes are active osmotic adjustment in roots, mitigation of drought stress by shading from Gliricidia or other factors. By contrast, production of cocoa beans was significantly reduced in the roof plots, supporting reports of substantial reductions in bean yields during ENSO-related drought events in the region. We conclude that cocoa possesses traits related to drought tolerance which enable it to maintain biomass production during extended dry periods, whereas bean yield appears to be particularly drought sensitive.
650	1	4	_9166664 _aTHEOBROMA CACAO
650	1	4	_9149387 _aGLIRICIDIA SEPIUM
650	1	4	_9158986 _aPLANTACION
650	1	4	_9159031 _aPLANTAS DE SOMBRA
650	1	4	_9134976 _aAGROFORESTERIA
650	1	4	_9161770 _aRAICES
650	1	0	_aCAMBIO CLIMÁTICO _92176
650	1	4	_9162769 _aRESISTENCIA A LA SEQUIA
650	1	4	_9162824 _aRESPUESTA DE LA PLANTA
650	1	4	_9162446 _aRENDIMIENTO DE CULTIVOS
773	0		_tAgroforestry Systems (Países Bajos) _gVolumen 79, páginas 171-187 _d(2010)
856	4	0	_uhttps://doi.org/10.1007/s10457-010-9303-1 _qpdf _yeng
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