PHOSPHATE AND POTASSIUM FERTILIZATION FOR RADISH GROWN IN A LATOSOL WITH A HIGH CONTENT OF THESE NUTRIENTS
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Data
2017-04-01
Autores
Cecilio Filho, Arthur Bernardes [UNESP]
Dutra, Alexson Filgueiras [UNESP]
Silva, Gilson Silverio da [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Univ Fed Rural Semi-arido-ufersa
Resumo
The intensive cultivation of vegetables with frequent chemical fertilization may cause accumulation of nutrients in the soil. This, in turn, may reduce crop yields and damage the environment due to contamination of ground water and rivers. Thus, to increase the effects of P (0, 100, 200, 300 and 400 kg ha(-1) of P2O5) and K (0, 60, 120, 180 and 240 kg ha(-1) of K2O) doses on the growth and productivity of radish cultivars (Sakata 19 and Sakata 25) in a soil with high levels of these nutrients, two experiments were conducted in randomized blocks with the factors cultivars and doses arranged in a 2 x 5 factorial design with three replications. Number of leaves per plant, leaf area, shoot and root dry mass, total and commercial productivity, percentage of cracked roots and P and K contents in the plant and in the soil were evaluated. The Sakata 19 cultivar performed better than the Sakata 25 in both experiments. The fertilization with P or K did not influence the growth and the productivity of both radish cultivars. Therefore, both cultivars of radish evaluated do not need to be fertilized with P and K when planted in a Latosol with high levels of these nutrients.
Descrição
Palavras-chave
Cultivars, Phosphorus, Potassium, Productivity, Raphanus sativus L.
Como citar
Revista Caatinga. Mossoro: Univ Fed Rural Semi-arido-ufersa, v. 30, n. 2, p. 412-419, 2017.