Mango yield under different irrigation regimes in subhumid conditions.
Oliveira F. das C., Coelho E. F., Vasconcelos L. F. L., Araújo E. C. E.
Author Affiliation: Embrapa Semi-Árido, Transferência de Tecnologias, BR 122, km 50, C.P. 23, CEP 56300-000, Petrolina, PE, Brazil.
Revista Brasileira de Engenharia Agrícola e Ambiental 6 : 390-396
Abstract : This study defined a strategy of efficient irrigation water management to allow maximization of mango crop yield. This goal was sought to obtain irrigation sustainability, by means of an efficient use of water for this crop. The experiment was carried out at Mangal, Frutas Tropicais de Exportação Limited farm in Teresina, Palmeirais highway, Piaui, Brazil. The experiment followed a random block design with six treatments and four replications. The treatments were: no irrigation, irrigation depth equivalent to 0.44, 0.55, 0.86, 1.00 and 1.37 of ETo, determined by using Class A pan evaporation. The variables evaluated were: productivity, weight and number of fruits per plant. Soil water content was monitored using neutron probe in 60 mm PVC tubes, installed at a distance of 1,0 m from trunk at depths of 0.3; 0.5 and 0.7 m for the six irrigation regimes in all blocks. Soil water content was measured twice a week, before irrigation. Estimated maximum commercial yield (12.491 t ha-1) was obtained for the water depth of 601.05 mm.