Effect of Adding Humic Acid at Different Times on the Physiological and Productive Characteristics of Chickpea Crop (Cicer arietinum L.))

Abstract

 This research was carried out at Kafr-Yahmol Research Station of Idlib Research Center during the agricultural season 2020/2021, aiming to study the effect of rates and dates of humic acid addition on the physiological and productive characteristics of chickpea crop.

The planting was done manually in lines, the distance between them is 40 cm, the distance between the plant and the other is 15 cm within the same line, the length of the line is 2 m, according to split plot Design. Humic acid was added at two rates (before planting and before flowering) with two dates (0, 40) kg/ha humic acid, and three replications for each treatment. The results of the study showed a significant superiority of treatment (40) kg / ha of humic acid in the second date, with high significant differences compared with the control for seed protein content of 26.250 %, the percentage of nitrogen in the leaves in the maturity stage 2.832%, the productivity of the seeds per hectare 2450 kg / ha, and the bio-yield per hectare 5435 kg / ha.