Effect of Dates of Adding Humic Acid and Different Rates of Phosphate Fertilizers on the Morphological and Productive Characteristics of Spring Chickpea Crop

Abstract

 This research was carried out at Kfarehmol Research Station of the Idlib Research Center during the agricultural season 2020/2021 and aimed to study the effect of dates of adding humic acid and different rates of phosphate fertilizers on the morphological and productive characteristics of chickpea crop.

The planting was done manually in lines; the distance between these line is 40 cm,and the distance between one plant and the other is 15 cm within the same line. the length of the line is 2m according to the Split plot Design. Humic acid was added at a rate of 20 kg/ha in two dates (before planting, before the beginning of flowering) and phosphate fertilizers were used in three levels (0,60,90) kg/ha super phosphate and were added before planting, with three replications for each treatment.The results of the study showed significantly superiority of the treatment (60) kg / ha of super phosphate in the first date, with a plant height of 43.27 cm, a seed yield of 2828 kg / ha, a biological yield of 5969 kg / ha, and a proof of harvest 47.30%. On the second date, the treatment was superior to (60) kg / ha of super Phosphate for the flower nodes 81.3%, with the number of pods/plants 55.27, and with a seed weight of 39.10 g. There was also a significant superiority for the treatment (90) kg/ha superphosphate in the second date, with a height of the first pod of 26.53 cm.