Mortalidade de Pennisetum glaucum submetido a estresses associado

Hydrical availability and water quality in semi-arid region are limited, and this has reduced agricultural production in this region. In this context, the identification of crops that are more tolerant to these conditions becomes necessary, since it can help in obtaining higher yields. The objective of this study was to evaluate the mortality rate of millet submitted to water and saline stresses. A randomized complete block design with four irrigation slides (25, 50, 75 and 100% of crop evapotranspiration) and three levels of salinity (0.03, 2 e 4 dS.m-1), forming a 4x3 factorial scheme with four replicates. The results showed that the mortality rate as a function of the water level was higher (31.43%) for the lower level and the lower (20.0%) was for the water level of 75%, since the mortality rate as a function of salinity was lower (17.1%) when using the control level and higher (42.86%) to maximum salinity level. After adjustment of millet mortality rate by logistic regression model, it was verified that the lowest probability of plant to remain alive is given by lowest hydrical level and highest saline level, while the highest probability is given by higher hydrical level and lower saline level.