Avaliação Agronômica de Híbridos de Sorgo Granífero em Rio Verde-GO

Abstract

Sorghum (Sorghum bicolor L. Moench) is globally cultivated, standing out in Brazil as an economical option for animal and human consumption. It demonstrates adaptability to diverse climatic conditions, including high heat tolerance and water scarcity. Sorghum for grain production gains significance in the second crop season, serving as an alternative to corn in feed production. An experiment conducted in the second crop of 2022 at São Tomaz Jatobá Farm in Rio Verde, Goiás, evaluated the competition among sorghum hybrids. Tested hybrids included Pioneer 50A60, H1, H2, H3, and H4, planted in 40 rows with plots of 12m x 18m. The predominant soil was a Red Latosol. Evaluations covered stand determination, percentage of plants in reproductive stage, growth analysis, productivity determination, grain moisture, and nitrogen concentration. Statistical analysis revealed significant variations in some variables, such as the percentage of plants in reproductive stage, length of vegetative and reproductive parts, grain moisture, and nitrogen in the grains. Results indicate that hybrids H1, H2, and H3 exhibit earlier maturity, while pre-commercial materials show no significant differences in productivity. No significant differences were observed in leaf nitrogen content and leaf nitrogen export among the hybrids. However, hybrid H3 stood out with the highest nitrogen content in the grains. The height of hybrid H1 aligns with recommendations, ranging between 1.0 and 1.5 meters. In summary, the results suggest that, although maturity varies, there are no striking differences in productivity among hybrids. However, certain characteristics, such as nitrogen content in the grains, may influence the choice of the most suitable hybrid.