Morphogenesis of grazing sorghum hybrids as a function of row spacing

• Main Author: Santos, Thiago Martins dos
• Publication Date: 2024
• Other Authors: Santos, Perlon Maia dos, Araujo, Vera Lúcia de, Santos, José Geraldo Donizetti dos, Negreiros Neto, João Vidal de, Faria, Ana Flavia Gouveia de, Santos, Antonio Clementino dos
• Format: Article
• Language: por
• Source: Revista Verde de Agroecologia e Desenvolvimento Sustentavel
• Download full: https://www.gvaa.com.br/revista/index.php/RVADS/article/view/9865
• topic: Proddutividade; Sorghum bicolor; Sorghum sudanense; Productivity; Sorghum bicolor; Sorghum sudanense; Proddutividade; Sorghum bicolor; Sorghum sudanense

The planting of sorghum hybrids for grazing is an alternative for forage production in the state of Tocantins. The objective of this work was to evaluate the morphogenesis characteristics of sorghum hybrids for grazing and to identify the plant density that promotes better yield. The experimental design was in complete randomized blocks, in a 2 x 4 factorial arrangement, with four replications, totaling 32 experimental units. The first factor represented two sorghum hybrids (BRS 800 and CMSXS 766), while the second factor included four row spacing levels (15, 30, 45 and 60 cm). The variables analyzed were green forage accumulation, leaf elongation rate, stem elongation rate, number of live leaves per tiller, leaf appearance rate, length end of leaves and phyllochron. At the end of the study, it was observed that the sorghum hybrid for grazing CMSXS 766 used in the spacing of 15 cm between rows (800,000 thousand plants per hectare) is the most suitable to achieve higher productivity under the imposed conditions. The sorghum hybrids BRS 800 and CMSXS 766 are viable in the State of Tocantins and can be used up to the third regrowth.