Coeficiente de cultivo e lâminas de irrigação do maracujazeiro amarelo nas condições semiáridas

• Autor(a) principal: Nogueira, Eliomar
• Data de Publicação: 2014
• Outros Autores: Gomes, Edilson Ramos [UNESP], Sousa, Valdemício Ferreira de, Silva, Lígia Renata Almeida da, Broetto, Fernando [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.12702/ii.inovagri.2014-a064; http://hdl.handle.net/11449/137270
• topic: Passiflora edulis Sims f. flavicarpa; Water demand; Water management; Passiflora edulis Sims f. flavicarpa; Demanda hídrica; Manejo de água

The study aimed to determine the coefficient of the yellow passion fruit cultivation and irrigation set capable of increasing crop productivity and quality of production in the environmental conditions of the semi-arid region of Piauí. The experiment was conducted in the Pilot Project for Fruit Crops Irrigated area in Santa Rosa, PI. We used a randomized block design with six treatments and four replications. Treatments (irrigation) were defined according to percentages of reference evapotranspiration (ETo): T1 25%, T2: 50%, T3: 75%, T4: 100%; T5: T6 and 125%: 150%. For monitoring water in the soil profile was used tensiometers. To determine the crop coefficient (Kc) used the water balance in the soil treatment based on 100% replacement of water. Morphological and physiological characteristics of yellow passion fruit were evaluated. The maximum yield of 27.052 kg ha-1 yr-1 was obtained by applying a water depth of 763.80 mm. The values of average fruit weight ranged from 0.207 kg (T6) and 0.159 kg (T1). The average kc obtained for the vegetative stage was 0.57 to 0.94 and flowering stage to fruiting phase 1.04. The water depth of greater efficiency comprise in the range of 75% and 100% ETo.