Respuesta a la aplicación de N y K en el cultivo de brócoli (Brassica oleracea), VAR. SK6-401 en la parroquia Mulaló.

Abstract

The consumption of vegetables and especially broccoli, due to the substantial contribution of nutrients in addition to its medicinal properties, as an aid in the prevention of cancer diseases; turns this into a crop of productive and commercial interest. Therefore, its management requires modernization and innovation, to achieve profitable productivity. Therefore, soil management is the fundamental basis of the development of this crop. Macronutrients in vegetables participate in fundamental functions and processes in vegetables, which affect the development and growth of crops. Hence, this research aims to determine the response of the application of N and K in broccoli var. SK6-401 in the Mulaló parish, to identify the optimal dose of N (DON) and K (DOK), its relationship with profitability in addition to carry out the economic evaluation of the treatments. This project was developed under a quantitative approach, with a type of experimental research at an applicative level. A randomized complete block design (DBCA) with three replications and an absolute control was implemented. For this, nine treatments based on fertilization were used: N and K whose application was divided into four parts during the crop cycle. The doses of N (170 kg ha-1,340 kg ha-1 and 510 kg ha-1) and K (60 kg ha-1, 120 kg ha-1 and 180 kg ha-1), which in combination were obtained the nine treatments. The days to harvest did not show a significant difference, while the variables weight, diameter and productivity showed a significant difference (P <0.05), T5 was identified through a test of means as the treatment with the best response, average pellet weight of 668 g diameter of 20 cm. While for the variables Incidence of Alternaria and Plasmodiphora it did not show significant difference. In relation to cost-1 benefit (P <0.05), T5 exceeded the average, which for this research represents a profit of 3.5 US $ for every US $ 1 invested.