Eficiência fotoquímica do maracujazeiro amarelo sob estresse hídrico e consorciado com feijão Caupi.

Abstract

Water is one of the main limiting factors for the growth and development of crops, which can compromise the yield of plants, especially in passion fruit, justifying the use of irrigation, however, when cultivated in the semi-arid region, characterized by water limitation, attention should be paid to the efficient use of water and soil, which can be obtained through the consortium. The objective of this study was to study the ecophysiological behavior of yellow passion fruit under water stress, intercropped with cowpea. The work was carried out in a field of the Federal University of Campina Grande, UFCG, Campus of Pombal, PB, located in the city of Pombal, PB, using a randomized block design in a factorial scheme (5x2), with five slides of irrigation, 60, 80, 100, 120 and 140% of the Etr and in the second factor the yellow passion fruit will be evaluated in monoculture and consorciado with cowpea, distributed in six blocks at random. To study the physiological variable fluorescence of chlorophyll. The obtained data were submitted to analysis of variance, test F, with regression analysis for the factor irrigation slides and test of comparison of means for the factor the consortium, using the program Sisvar 4.0 In the conditions of cultivation of this experiment, where the pots were filled with substrate composed of soil and manure, even when applying the smallest leaf (60%) and with a consortium system competing for a greater amount of water, the volume retained was enough to keep the plants still young, causing no damage to the photosynthetic apparatus.