Susceptibility factor and productivity of peas in different water table heights

Abstract

This paper aimed at determining the susceptibility factor and the effects of daily stress index and temporary flooding on the production of peas (Pisum sativum L.), cultivated in lysimeters drainage. We studied the effects of five treatments consisted of five values of SEW30: Q1: = 0 cm d^-1 (witness), T2: = 96 cm d^-1; T3: = 144 cm d^-1; T4: = 192 cm d^-1, and T5: = 240 cm d^-1. In dealing witness the water table remained at 50 cm in depth during the Phenologic cycle of the culture. For other treatments, there were six elevations of the water table of 10 in 10 days, lasting for two days each. In determining the coefficient of susceptibility, the culture was subjected to waterlogging with two days’ duration at 5 cm in depth, at each stage of development. The crop of peas was more sensitive to the stress imposed on the first stage of growth and less sensitive on the fourth stage. Treatments involving water table elevations and daily stress index showed a negative linear correlation reducing the values of the plant height, average weight of pods per plant, total weight of pods per plant, average number of pods per plant and the total number of pods per plant.