Vazão ideal de gotejadores para a cultura do pimentão em diferentes tipos de solo

Abstract

The process of designing an irrigation system, firstly, passes by the choice of the dripper flow, which depends on the percentage of wetted volume (PW). Commercially,there are many flows of drippers and itschoice may influence management strategies and the cost of the irrigation system. So,the aim of this study was to estimate the ideal flow drippers for sweet pepper (Capsicum annun) in different types of soil. The project was developed in partnership with the Federal University of Sergipe and Alagoas. The treatments were based on the type of soil (Oxisol, Argisol and Cambisol) vsemitters flow (24 flows) bydifferentbrandsvswater application time (1, 2, 4 and 7 hours) in pepper. Simulations were made withthe dimensions of the superficial bulbs in a spreadsheet, by using the equationsof Maia et al. (2010). The ideal flow was considered when the PW wasfound between 33-70%. For Argisol and Cambisol, almost all flows met the criteria, atirrigation times of 1 and 2 hours. As for the Latossol the most suitable application times studied with the flow were2 hours. Overall flows next to 1.5L.h-¹ tend to be more suitable for the bell pepper crop.