phosphorus levels in soil and lettuce production due to phosphorus fertilization
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ID: 246685
2014
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Abstract
The leafy vegetables are considered nutrient-demanding, but are scarce in the literature works about phosphorus fertilization. This study aimed to evaluate the effect of phosphate on the production of lettuce, content and amount of P accumulated in leaf plants, and to relate levels of P in the clayey soil with plant production. The experiment was conducted in a greenhouse in pots in a randomized block design with ten treatments and four replications. The treatments were made up of P, corresponding to 0, 50, 100, 150, 200, 300, 400, 500, 600 and 700 mg dm-3, as triple superphosphate powder. Portions of 6 dm3 of the clay soil (420 g kg-1 clay) received lime, aimed at raising the V % soil to 70 %, equivalent to 20 t ha-1 of cattle manure, and the phosphate fertilizer according to the treatments, remaining incubated for about 30 days. At the end of incubation, each pot received a change of lettuce cultivar Verônica. The plant harvesting was performed 39 days after transplanting the seedlings. O P gave large increases in growth and production of lettuce, and culture responded positively to the application of high doses of the nutrient. A dose of 350 mg dm-3, equivalent to 800 kg ha-1 P2O5, was the most suitable for growing lettuce in the clay soil. In this work conditions, the phosphorus fertilizations it was necessary when the P-Mehlich contents in the clay soil were less than 75 mg dm-3.
| Reference Key |
2014semina:phosphorus
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|---|---|
| Authors | ;José Ricardo Mantovani ;Igor Arthur da Costa Oliveira;Douglas José Marques ;Adriano Bortolotti da Silva ;Paulo Roberto Corrêa Landgraf |
| Journal | frontiers in neuroendocrinology |
| Year | 2014 |
| DOI |
10.5433/1679-0359.2014v35n4Supl1p2369
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