Physical and chemical analysis of agricultural soils in Southern Manabí and their relationship with crops (Original).

Abstract

With the objective of analyzing the physical and chemical characteristics of agricultural soils in the South of Manabí and their relationship with crops, a study was carried out in six precincts of six parishes in the South of Manabí (Salango, La Unión, Puerto Cayo, Membrillal and San Bartolo) and a closed survey elaborated and validated was carried out on 60 farmers. The experiment was analyzed in a completely randomized block experimental design with 13 treatments. A statistical analysis of variance analysis and comparison of means was made, using Tukey's multiple test at PR<0.05 probability. To determine the perception of the producers, a chi square analysis was carried out. The results of the physical and chemical analyzes of the soils determined that S and Fe were not significant among themselves, but they were significant with respect to B and K. The evaluation of the results showed that 38% of the producers considered as main crop to corn, 12% to coffee and watermelon. 80% of farmers stated that the main factors that affect their crops are drought and pests. 66.6% of the farmers indicated that their soils are clayey and poor in organic matter and 20% are loamy soils. The results found allow us to conclude that the physical and chemical characteristics of the soils are suitable for all crops in the South of Manabí, although they have abiotic and biotic problems.