5 documents found, page 1 of 1
Soybean macronutrient availability and yield as affected by tillage system
Moreira, Silvino Guimarães; Kiehl, Jorge de Castro; Prochnow, Luís Ignácio; Pauletti, Volnei; Martin-Neto, Ladislau; Resende, Alvaro Vilela deThe effect of tillage system (NT-no tillage; CT-conventional tillage; MT-minimum tillage; and NT/scarification, every three years) on soybean nutrient availability and yield was evaluated on Oxisol after 12 years of cultivation. Soil samples were collected at depths of 0.00-0.05, 0.05-0.10, and 0.10-0.20 m and were analyzed for P, K, Ca, Mg, carbon (C), organic matter (OM), pH value, potential CEC, base saturat...
Effect of liming on micronutrient availability to soybean grown in soil under d...
Moreira, Silvino Guimarães; Prochnow, Luís Ignácio; Pauletti, Volnei; Silva, Bruno Montoani; Kiehl, Jorge de Castro; Silva, Carine Gregório MachadoThe effect of liming on the availability of micronutrients to soybean cultivated during different numbers of years under no tillage (NT) was investigated. The treatments consisted of the number of years under NT (three, six, and nine years) and five rates of lime (0, 33, 67 and 100% of the amount calculated to raise soil base saturation to 70%) broadcast on soil surface plus the rate of 100% broadcast with inco...
Doses de nitrogênio e potássio no crescimento do trigo
Kiehl, Jorge de Castro
Enzymatic antioxidant responses to biostimulants in maize and soybean subjected...
Kiehl, Jorge de Castro
Loss of ammonia in soil and of urea-autoclaved and treated organic residues
Sengik, Erico; Kiehl, Jorge de Castro; Silva, Maria Anita Gonçalves da; Palangana, Denis Campaner; Lawder, Marcus RodrigoEffect of adding organic residues to soil in ammonia losses by volatilization due to urea application is evaluated, together with autoclaving at 120°C, at 1 atm, during two hours. Samples of Ap surface of structured eutrophic dark red latisol (Rhodic Kanhapludalf, clay texture) from the municipality of Piracicaba SP Brazil, were used. Autoclaving delayed the peak of losses and increased loss of ammonia up to 56...