Estratégias de amostragem para determinação do nitrato residual no solo após o cultivo do tomateiro adubado em sulcos

摘要: Sampling strategies for determining residual nitrate soil levels after growing tomatoes in fertilized furrows. Management of nitrogen fertilizer programs and sampling to determine the N-NO3 furrows were studied. Two groups studied, one without protection another grown an irrigated furrow which a solid had been applied. In each plot, 10 treatments or criteria evaluated. experiment, arranged split-plot design, with different conditions as main treatment positions treatment. The randomized complete block design. Soil determined at end cycle. all groups, proportional amount N fields applied furrow, best strategy level was use samples obtained from between plants.