IRRIGAÇÃO POR GOTEJAMENTO SUBSUPERFICIAL E FERTIRRIGAÇÃO DA CULTURA BRÓCOLIS
DOI:
https://doi.org/10.15809/irriga.2021v26n2p383-397Abstract
The use of irrigation in agriculture has been highlighted by high yields and crop protection in the face of the rainy season, however, its application must be based on technical and operational criteria. The objective of this work is to evaluate the hydraulic performance and the development of the culture of 'head single broccoli' in drip irrigation on surface and subsurface, with and without fertigation. The experiment was in randomized blocks design (DBC), with 4 replications. The treatments consisted of the position of the drip tube and the application of fertilizers. The drip tube was placed at depths 0; 0.10 and 0.20 m; and the application of fertilizers carried out via fertigation and manual fertilization. In relation to the drip tube, it was evaluated: flow, flow variation coefficient (CVq), Christiansen uniformity coefficient (CUC) and distribution uniformity coefficient (CUD) and degree of clogging (GE); and, regarding the evaluation of broccoli: diameter of the flower stalk, diameter of the inflorescence, perpendicular diameter of the inflorescence, height of the inflorescence, fresh mass of the inflorescence, days of transplantation until harvest and water productivity. There were no significant changes in the evaluated characteristics of the drip tube and in the production of broccoli.
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