Onion yields under different irrigation managements

Abstract

The present work aimed at evaluating the agronomic performance of onion under irrigation, submitted to three methods of irrigation management. The experiment was conducted in the experimental field of DTCS / UNEB, in Juazeiro, from June to November 2013. A randomized block design was used with three treatments and seven replicates. The treatments considered were: Tensiometry, Penman-Monteith FAO and Class A pan. The cultivar used was Vale Ouro IPA-11. The following characteristics were evaluated: total productivity, commercial productivity, production of bulbs class 1, 2, 3 and 4, average diameter, average bulb weight, bulb dry matter content, titratable acidity, soluble solids, soluble solids / titratable acidity ratio and pungency. Irrigation management methods based on soil moisture content and microclimate, yields above the national average. The Class A pan method and tensiometry did not differ statistically from the standard Penman-Monteith-FAO method, so the choice of method should be based on the availability of tools as well as the cost of implantation and operation.