Genotype x sowing time interaction on agronomic parameters of corn sown in no-tillage in the Brazilian semiarid region

Authors:
Open Access
Publisher website
Google Scholar
Abstract
This study aimed to identify genotypes that present better agronomic performance by evaluating the genotype x sowing time interaction in a no-tillage system in the semiarid region of Pernambuco. The experimental design was a randomized block design, in a 7x4 factorial scheme, with four replications, the first factor being the seven hybrids (1-BM 815 PRO3; 2- BM 930 PRO 3; 3-SHS 7939 PRO3; 4-SHS 8525PRO3; 5-B2856 VYHR; 6- B2612 PWU and 7- B2433 PWU) and the second the four sowing dates (1- 04/03/2024; 2-11/03/2024; 3-18/03/2024 and 4-25/03/2024). The agronomic and yield parameters of the corn hybrids were evaluated. It was concluded that the principal component analysis showed that the sowing dates influenced the agronomic characteristics of the corn hybrids mainly due to temperature, rainfall and relative humidity; the hybrids that presented greater productive stability due to the different sowing dates were B2612PWU and SHS7938PRO3; the dendrogram showed that there was a phenotypic distinction between the hybrids and separated them into three distinct groups according to their agronomic characteristics; the sowing date influences the agronomic characteristics of corn hybrids.

This publication has 22 references indexed in Scilit: