Cinza vegetal na correção da acidez do solo e nas características fitométricas dos Panicum Maximum cv. BRS Zuri e Mombaça

Abstract

Vegetable ash as a soil corrective and fertilizer appears as an alternative for the disposal of solid waste for different types of industries, which are responsible for several environmental problems, when not disposed of correctly. Thus, the cultivation of forage grasses using this alternative fertilizer and concealer has gained great prominence in agriculture. In this context, there is a need for studies to increase production and decrease the high cost of investments in the cultivation of these grasses. The objective was to evaluate the effect of vegetable ash doses as soil corrective and fertilizer and on the phytometric characteristics of Panicum maximum cv. BRS Zuri and Mombaça grown in a Cerrado Red Oxisol. The present work was carried out at the Federal University of Rondonópolis, in a greenhouse, during the months of August and November of the year 2019, with both cultivars, fertilized with vegetable ash and nitrogen, in addition to having the soil corrected with vegetable ash. The experimental desing was in randomized blocks in a 5x2 factorial scheme, with five doses of vegetable ash (0, 8, 16, 24 e 32 g dm-³) and two cultivars of Panicum maximum (BRS Zuri and Mombaça) totaling 60 experimental units. Vegetable ash correct the soil and positively influenced the phytometric characteristics number of leaves, number of tillers, stem diameter, plant height, leaf area and root volume, with the recommended range of vegetable ash dose between 21 to 35 g dm-³.