Keywords
Cajanus cajan
crop association
How to Cite
Abstract
The objective of this study was to evaluate the effect of the planting time of kumanda yvyra’í (Cajanus cajan L) in a intercropping system with corn on crop growth and yield. The study was conducted at the Concepción Agricultural School, in the district of Concepción, from October 2020 to February 2021. The experimental design used was a completely randomized block design (CRBD), consisting of five treatments and four replicates. The treatments used were T1: Cajanus cajan sown days after emergence (DAE) of maize; T2: Cajanus cajan sown 15 DAE of maize; T3: Cajanus cajan sown 30 DAE of maize; T4: Cajanus cajan sown 45 DAE of maize; and T5: Cajanus cajan sown 60 DAE of maize. The variables evaluated were: plant height, number of rows of kernels, ear length and diameter, thousand-kernel weight, and grain yield. The data obtained were subjected to analysis of variance (ANOVA) using the F-test, and the means of the treatments were compared using Tukey’s test at a 5% probability of error. The results indicated significant differences between treatments in the variables studied, with the exception of cob length. The T5 treatment (Cajanus cajan planted 60 DAE after corn) proved to be the most effective strategy, promoting greater plant height (244.72 cm), increasing the number of grain rows (15.12), increased ear diameter (4.59 cm), thousand-kernel weight (246.50 g), and achieved the highest yield (3647.16 kg ha-1). It is concluded that delaying green manure planting is a viable technique for producers seeking sustainability without sacrificing crop yield.
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