Resposta da aveia preta à aplicação de fósforo sob duas doses de nitrogênio em condições de casa-de-vegetação

摘要: Black oats' response to the application phosphorus under two levels of nitrogen greenhouse conditions. The (P) and (N) in black oat (Avena strigosa Schieb) can promote larger development coverage when cultivated low fertility soils. This study aimed evaluate effect regarding development, nutritional value production dry matter. An experiment was conducted at Faculdade de Ciencias Agrarias e Veterinarias, Universidade Estadual Paulista Julio Mesquita Filho (Unesp), from October 27 (2004) February (2005), using 5 dm 3 vases with substratum a dystrophic Red Latosol. design completely randomized, analyzed factorial outline 4x2, replications. treatments consisted four doses P (25; 75; 150 300 mg -3 ), N (100 ). After 120 days sowing, plants evaluated per vase, starting height number tillers, matter aerial part root. At same time, amount soil macronutrients root were determined. 200 amounts nutrients improved its promoted plants. high level (300 ) harmed oats. largest oats associated concentration being close 100 , 2.7 g kg -1 .