Desenvolvimento de Mudas de Capim Vetiver sob diferentes níveis de Adubação Fosfatada

Abstract

Vetiver grass is a very rustic plant, which develops in different types of soils and has been studied and used due to its potential for erosion control, slope stabilization, soil decompaction and increased water infiltration on slopesThe objective of this study was to evaluate the development of vetiver grass seedlings fertilized with different levels of phosphate fertilization. Vetiver seedlings obtained by clumps subdivision were left with the roots immersed in water for four days to emit new roots and shoots. Subsequently, it was carried out and planted in polyethylene bags and conducted in a completely randomized design, and the treatments consisted of four levels of phosphate fertilization: T0 - Control, T1 - 20 g, T2 - 30 g, T3 - 40g of simple superphosphate per seedling, with each treatment replicated five times. To evaluate the development of vetiver seedlings under different doses of phosphorus, the variables such as survival rate, seedling height, number of leaves and number of tillers were analyzed. The evaluations were made every two weeks, starting from 15 days after transplanting (DAT) and ending with 105 days. Survival rate, number of leaves, height and number of tillers were not influenced by phosphorus doses. Vetiver seedlings grown in polyethylene bags and fertilized with phosphate have a 100%survival rate. The present study reinforces the benefits of producing vetiver grass seedlings in bags, despite increasing the cost. It also demonstrates that Vetiver seedlings produced in bags filled with soil and fertilized with phosphorus, can present a higher survival rate than those produced in other substrates