Publicação: Potassium fertilization of cauliflower and broccoli in a potassium-rich soil
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2016-04-01
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Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal
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Cauliflower and broccoli are important vegetables but have lacking and divergent information about potassium (K) fertilization in soil with a high K content. Two experiments were carried out from 2-1-2010 to 5-20-2010 in Jaboticabal City, Sao Paulo, Brazil, aiming to evaluate the effect of different K doses (0, 50, 100, 150 and 200 kg ha(-1) K2O, in potassium chloride) on the yield of cauliflower 'Verona' and broccoli 'BRO 68' in Rhodic Eutrudox soil with a high K content. The broccoli and cauliflower responded positively but differently to potassium fertilization. The maximum yield of broccoli (12,476 kg ha(-1)) was obtained with 160 kg ha(-1) K2O, while the yield of cauliflower increased linearly with increasing K dose, yielding 38,285 kg ha(-1) with 200 kg ha(-1) K2O.
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Ciencia E Investigacion Agraria. Santiago: Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal, v. 43, n. 1, p. 151-157, 2016.
