Eficiência de diversos corretivos na recuperação de solo salino-sódico e seus efeitos na cultura de arroz.

Abstract

The present study was conducted with the objective to verify effects of application of different products ( gypsum - 10 t/ha , sulfuric acid - 320 L/ha , polimaleic acid - 6 L/ha , farmyard manure - 20 t/ha and control) in reclamation of a saline-sodic soil of Irrigated Perimeter of São Gonçalo-PB and posterior reflexes in rice crop. Results obtained indicated superiority of gypsum in rice productivity while maximum decrese in ESP and rice growth was observed in treatment of polimaleic acid.