TITLE:
Root Growth, Nutrition and Yield of Maize with Applied Different Limestone Particle Size in the Cerrado Soil
AUTHORS:
Rafael Felippe Ratke, Hamilton Seron Pereira, João de Deus Gomes dos Santos Junior, Joaquim José Frazão, Juliano Magalhães Barbosa, Bruno de Oliveira Dias
KEYWORDS:
Limestone; No-Tillage; Zea Mays
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.4,
February
26,
2014
ABSTRACT: The limestone with smaller particle size provides
rapid correction of soil acidity. However, the limestone with large particles
can promote bigger root growth, and may still have a residual effect on the
soil. The aim of this study was to evaluate the residual effect of the
application and incorporation of different limestone with a particle size
bigger than 0.30 mm in root growth, nutrition and yield of maize in Cerrado
soil. A randomized completed block utilized in this experiment, with five
treatments and four replications. The grain sizes of dolomitic limestone
incorporated into the Oxisol were: 0 (control, no-lime), 2.00-0.82 mm, 0.82-0.56 mm, 0.56-0.30 mm, 0.30-0.20 mm, in doses of 6.5
t·ha-1, 3.9 t·ha-1,
2.6 t·ha-1 and 1.3 t·ha-1 respectively. The limestone
applied in introduction no-tillage. The maize were evaluated of root attributes,
nutrition and grain yield in two years 2009 and 2010. The use of limestone
particle size of 2.00-0.82 mm, and the quantity of 6.5 t·ha-1 applied
to the soil and incorporated showed elongation and root growth of maize thin
depth of 20-40 cm in the soil. In that, same proposed
management of the limestone was the highest maize grain yield in the first
year. The rooting characteristics evaluated correlated with leaf Ca and Cu and
maizegrain yield.