Organic development of lettuce cv. Veneranda in different beds and irrigation management

Abstract

The objective of this work was to evaluate the development of lettuce cv. Veneranda (Lactuca sativa L.), in different forms of irrigation in organic production system in the semi-arid Pernambucano. The present study was conducted in the city of Salgueiro / PE, in a family-owned rural property. Experimentally, we analyzed the development of organic lettuce irrigated in an economical bed integrated to the umbu cuca irrigation system and conventional bed by means of the reference evapotranspiration (ETo) daily, estimated by the standard Penman-Monteith method recommended by the FAO, during seven evaluation periods biometric after transplanting (04; 08; 12; 16; 20; 24 e 27 DAT). At the end of the cycle (27 DAT) the biometric and water consumption data by type of irrigation management were evaluated. After data collection, the data were submitted to polynomial regression analysis. The results showed that the biometric parameters (number of leaves, height and diameter of the plant) were higher for the economic bed, integrated umbu cuca irrigation system. However, there was a consumption of 47.17 mm of water in this irrigation system, when compared to the management of the irrigation in conventional beds through ETo by the Penman-Monteith standard method - FAO.