Agronomic characteristics of maize after overliming

Authors

• Fabrício Vilela Andrade Fiorini Universidade José do Rosário Vellano- Unifenas
• Lucas Leite Reis Centro Superior de Ensino e Pesquisa de Machado (Cesep)
• Adauton Vilela de Rezende Universidade José do Rosário Vellano- Unifenas
• Gian Otávio Alves da Silva Universidade José do Rosário Vellano- Unifenas
• Raphaela Aparecida Tomaz do Prado Universidade José do Rosário Vellano- Unifenas
• Miguel Ribeiro Alves Universidade José do Rosário Vellano- Unifenas

DOI:

https://doi.org/10.17058/tecnolog.v24i2.14551

Keywords:

dry matter, effects, nutrients, yield, Zea mays.

Abstract

Overliming is an economical practice aimed at increasing cation exchange capacity (CEC) and soil base saturation (V%), in addition to increasing grain and dry matter yield. The objective of this study was to evaluate the effects of overliming on the agronomic characteristics of maize. The experiment was carried out in a randomized block design (RBD), with four replications, where five treatments corresponded to the dosages (1.9; 2.5; 3.2; 3.8 and 4.4 tons ha-1) that simulated the increase in base saturation to (60, 70, 80, 90 and 100%), respectively. Plant height was evaluated, besides ear height, number of ears per plant, number of viable ears per plant, shoot fresh weight, root fresh weight, stem diameter, shoot dry matter, root dry matter, grain weight, weight of 100 grains, shoot dry weight and root dry weight. There was a significant variation for three of the evaluated characteristics. Under the studied conditions, overliming increased some agronomic characteristics of maize, such as shoot dry matter, root dry matter and shoot dry weight, emphasizing the dosages of 2.5 t ha-1 and 3.8 t ha-1 limestone.