Avaliação de doses de potássio nos parâmetros produtivos da melancia Red Heaven

Abstract

The present work aimed to evaluate different potassium doses in watermelon crop and to evaluate their effects on fruit yield and quality. The experiment was conducted under field conditions. The experimental design was IHD in bands, with four potassium doses (50; 100; 200; 300; kg K2O ha-¹) configuring four treatments and four replications, totaling 16 experimental units. Fruit diameter, fruit length, fruit width, mesocarp thickness, sugar content (ºBrix), total acidity and fresh weight were evaluated. Data were subjected to analysis of variance with F test at 5% probability. When significant, data were regressed. It can be concluded that the highest values for fruit diameter (85.50cm), fruit length (33.75cm), sugar content (ºBrix) and fresh weight (12.75kg) were directly influenced by potassium fertilization. the dose of 300kg K2O ha-¹. Fruit width, mesocarp thickness and acidity were not influenced by potassium fertilization.