Produção do algodoeiro colorido irrigado com água de diferentes níveis de salinidade.

Abstract

The present study was carried with the objective of verifying the response of upland colored cotton CNPA 2002/26 irrigated with different types and levels of salinity (ECw) of irrigation water production variables. Adopted in study a completely randomized experimental design with 6 levels of ECw (2.0, 3.5, 5.0, 6.5, 8.0 and 9.5 dS m-1) and two types of irrigation water (the water prepared maintaining equivalent proportions of 9.5:0.5 and 6.0:4.0 between Na:Ca in chloride form) and 3 replications. Production variables: number of capsules and it’s mean weight were evaluated. It was concluded that the negative effects of salinity of irrigation water are independent of the type of water and upland colored cotton the production opted decreased 5.41% for each unitary increment of ECw in relation to witness (ECw = 2.0 dSm-1).