Early fertilization during winter cultivation and its residual effect on silage maize grown sequentially

Authors

DOI:

https://doi.org/10.18512/rbms2023v22e1313

Abstract

The objective of this study was to evaluate the effect of an early application of potassium (K) fertilizer on pearl millet (Pennisetum glaucum L.) grown during fall/winter on the performance of maize (Zea mays L.) silage grown in succession. Using a randomized block design, in the fall/winter harvest, the plots were composed of millet and six doses of K (0, 30, 60, 90, 120 and 150 kg K2O ha-1) as muriate of potash (57% K2O) in addition to fallow. In the summer harvest, during the cultivation of maize, six doses of K2O were applied complementary to the doses applied in the autumn/winter harvest to total 120 kg K2O ha-1 (120, 90, 60, 30, 0) and 0 kg K2O ha-1 for the no cover treatment. An additional treatment that was planted to received the recommended fertilization amount (60 and 90 kg ha-1 of K2O for planting and broadcasting, respectively). For the millet, was evaluated plant height, green and dry biomass yields, and soil cover at 30, 60, 90 and 120 days after harvest . For maize, agronomic traits, leaf nutrient content and green and dry biomass yields were evaluated. The early application of K fertilizer did not alter the yield components of millet and silage maize. However, the straw produced by the millet was efficient at promoting soil cover in the off-season.

Author Biographies

Karina Mendes Bertolino, Universidade Federal de Lavras

Departamento de Agricultura

Giuliana Rayane Barbosa Duarte, Universidade Federal de Lavras

Departamento de Agricultura

Kamilly Maria Fernandes Fonseca, Universidade Federal de Lavras

Departamento de Agricultura

Elias Costa Ribeiro, Universidade Federal de Lavras

Departamento de Agricultura

Edipo Menezes da Silva, Universidade Federal de Lavras

Departamento de Estatística

Flávia Barbosa Silva Botelho, Universidade Federal de Lavras

Departamento de Agricultura

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Published

2023-08-07

How to Cite

Bertolino, K. M., Barbosa Duarte, G. R., Dias Martins, F. A., Fernandes Fonseca, K. M., Ribeiro, E. C., da Silva, E. M., & Silva Botelho, F. B. (2023). Early fertilization during winter cultivation and its residual effect on silage maize grown sequentially. REVISTA BRASILEIRA DE MILHO E SORGO, 22. https://doi.org/10.18512/rbms2023v22e1313

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Section

Scientific Paper