Desempenho de espécies vegetais conduzidas em sistemas agroflorestais e irrigadas com água cinza na Região do Sertão do Pajeú

Abstract

The increasing demand for water in the Brazilian semiarid region has led farmers to seek local solutions to increase the supply of this important input to crops that feed their families and herds. This has already driven small-scale wastewater use in many communities or sites in the region. In this perspective the present work aimed to analyze the performance of fruit and forage plants conducted in Agroforestry Systems, under drip irrigation condition with filtered gray water and rainfed regime under semiarid climate conditions in Sertão do Pajeú, in the municipalities of Flores and Triunfo, in Pernambuco, Brazil. The plant evaluation period was from September 2018 to January 2019, in which the morphometric characteristics of the orange (Citrus sp.), Mango (Mangifera indica L.), soursop (Annona muricata L.), and gliricidia (Gliricidia sepium (Jacq.) Kunthex Walp.), as well as forage palm clones Mexican Elephant Ear (OEM) (Opuntia stricta var. IPA-200016 (Haw.) Haw.) IPA Sertânia (IS) and Doce Young (DM) of the species (Nopalea cochenillifera (L.) Salm-Dyck) of the varieties IPA-200205 and IPA-100004, respectively. Stem diameter (DC) and plant height (AP) were evaluated, and for palm clones it was evaluated beyond plant height (AP), plant width (LP), the number of cladodes per plant (NCP). first, second and third order, as well as the determination of the leaf area (AC) calculation through mathematical models; In addition to these parameters, the survival rate and growth rate of these plant species were determined. The use of gray water positively influenced the performance of plants when compared to those conducted under rainfed regime, obtaining superior results, both in growth and in plant survival, in the cultivated molds of the Agroforestry Systems conducted. by farming families. This shows that filtered gray water can be reused, especially in periods of water scarcity, reducing the level of environmental contamination and improving the performance of Agroforestry Systems in the semiarid region, becoming another resource to improve the quality of life of rural households of this region.