Potassium Fertilization of Sweet Corn in a Potassium-rich Soil

  • Natália Meneses Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Produção Vegetal, Via de acesso Professor Paulo Donato Castellane s/n, CEP: 14884-900, Jaboticabal, São Paulo, Brasil
  • Juan Waldir Mendoza-Cortez Universidad Nacional Agraria La Molina, Facultad de Agronomía, Departamento de Fitotecnia. Av. La Molina s/n, La Molina, Lima, Perú
  • Arthur Bernardes Cecílio Filho Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Produção Vegetal, Via de acesso Professor Paulo Donato Castellane s/n, CEP: 14884-900, Jaboticabal, São Paulo, Brasil
Keywords: Zea mays convar. saccharata var. rugosa, K excess, plant nutrition

Abstract

Hybrids with high yield potential and nutritional requirement, higher cost of fertilizers and environmental impact caused by the excessive use of nutrients, are factors that require improvements in the management of fertilization of sweet corn. An experi-ment was carried out from 24/4 to 25/8 2014, in São Paulo, Brazil, aiming to evaluate potassium (K) rates (0, 50, 100, 150, 200 and 250 kg ha-1 de K2O), in the yield of supersweet corn ‘GSS 41243’, main cultivar used by agribusiness in São Paulo, Brazil. The culture was established in a K rich Rhodic Hapludox soil (4,2 mmolc dm-3 exchangeable K ). Potassium rates did not influence total, commercial and grain productivities, grain yield, length and diameter of the ear, or leaf potassium content. Therefore, K fertilization in supersweet corn ‘GSS 41243’ in a K rich Rhodic Hapludox soil can be dispensed.

Published
2017-12-01
How to Cite
1.
Meneses N, Mendoza-Cortez J, Cecílio Filho A. Potassium Fertilization of Sweet Corn in a Potassium-rich Soil. Agrociencia Uruguay [Internet]. 1Dec.2017 [cited 5Aug.2020];21(2):54-58. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/157
Section
Natural and environmental resources

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