Doses of corrective phosphating in land rice high in first year of culture

Abstract

The aim of this study was to evaluate the influence of phosphorus levels in coverage of the morphological and productive components in rice plant upland. The study was conducted in the municipality of Alta Floresta - MT, in the agricultural year 2007/2008 in a randomized block design with five treatments (0, 50, 100, 150 and 200 kg ha-1 of P2O5) following the recommendations of Sousa et al., (2006 ), with four replications. They evaluated the length between node, plant height, stem diameter, number of tillers, number of panicles, number of grains per panicle, percentage of grains " full ", weight of 100 grains and grain yield . The match only had no influence on weight of 100 grains and length from node. The highest yield was obtained in corrective dose of 168 kg ha-1 of P2O5.

Keywords

• Oryza sativa L.
• corrective fertilization
• open areas
• Amazon region