01710naa a2200217 a 450000100080000000500110000800800410001902400570006010000250011724501270014226000090026952009860027865000190126465000120128365000250129565300380132070000180135870000200137670000220139677300740141818969172022-07-28       2011    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1590/S1516-359820110007000082DOI1 aLIMA, N. R. C. de B.  aCritical periods of sorghum and palisadegrass in intercropped cultivation for climatic risk zoning.h[electronic resource]  c2011  aThe objective of this work was to define critical periods for sorghum and palisadegrass cultivated on crop-livestock integrated systems under water deficit. An experiment was carried out in a completely random block design with four treatments (control and interruption of water supply in three periods) and three replicates. Water supply was interrupted until soil water humidity was close to permanent wilting point at the phases: germination of palisadegrass seeds; start of tillering of palisadegrass and initiation of panicles of shorghum; start of shorghum flowering. Water deficit starting at palisadegrass germination delayed intital development of the plants because of the reduction in tillering. Water restriction at panicle initiation phase and at sorghum flowering determined reduction of grain production. Critical periods for intercrop of sorghum and palisadegrass correspond to palisadegrass germination phase and flowering and panicle inititation phase of sorghum.  aAbiotic stress  aDrought  aBrachiaria Brizantha  aCrop livestock integrated systems1 aSANTOS, P. M.1 aMENDONCA, F. C.1 aARAÚJO, L. C. de  tRevista Brasileira de Zootecniagv. 40, n. 7, p. 1452-1457, jul 2011.