Growth analysis of sorghum underdifferent stands

Abstract

In view of the current and increasing importance of the culture of sorghum in Brazil, and that the same one can be cultivated in not favorable of the soil and clima conditions to other cereals, the analysis of growth of plants of this species under different densities of plantation was carried through. The experiment was developed at the University Campus of Gurupi-TO, pertaining it the Federal University of Tocantins, in delineation of blocks at random with five repetitions.  Four densities of culture, corresponding 140, 200, 260 and 320 thousand plants for hectare had been used. The evaluations, spaced of ten days between themselves, were effected during all the cycle of the plants. It was verified that the lesser densities of culture had presented greater taxes of absolute growth (TCA), tax of liquid assimilation (TAL) and reason of stem mass (RMC). The biggest densities of culture presented greater specific foliar area (AFE) and reason of foliar mass (RMF). Considering the occurrence of water deficiency in the end of the plants cycle, it was observed that the treatments under bigger densities of culture had been the ones that had less suffered with this stress.