科研之友
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摘要
the objective of this work was to evaluate sesame performance to npk fertilizer and different levels of soil fertility. two experiments were conducted: one in a greenhouse and another in field conditions. in the greenhouse, the study used a completely randomized design, in a 6 x 2 factorial scheme, with four replications. the first factor was six fertilization levels of 04:14:08, and the second two soil types (low and high fertility). the experiment in field conditions used randomized blocks with 6 treatments (0, 75, 150, 300, 450 and 600 kg ha-1 of 04-20-10 fertilizer 04:20:10) and 4 replications. the fertilization with 04:14:08 in low fertility soil promoted greater height of the plants from the beginning until the end of the cycle, whereas in ground of high fertility responses were evident only in the first 43 days of growth. the fertilization resulted in an increase in sesame grain yield when cultivated in low fertility soil, reaching maximum values in the dose of 550 kg ha-1 of 04:14:08 fertilizer. in field conditions, there was no response from fertilization with respect to the dry matter and yield of sesame grains cultivated in second crop conditions.
