The present study was conducted at the experimental farm, El-Kassasein Research Station, Ismailia Governorate, Egypt, during the two successive winter seasons of 2022/2023 2023/2024, to investigate the effects of natural foliar applications, i.e., Salicylic acid, Ascorbic acid, Citric acid, Aloe vera extract and Borpota fertilizer on growth parameters and pod yield of sugar snap pea cultivar “Sugar Snap".
This experiment included 11 treatments which arranged in a randomized complete block design (RCBD) with three replicates.
The foliar application of 11 treatments as follows:
Control (sprayed with tap water only), Salicylic acid 100 mg L^-1 (ppm), Salicylic acid 200 mg L^-1 (ppm), Ascorbic acid 100 mg L^-1 (ppm), Ascorbic acid 200 mg L^-1 (ppm), Citric acid 100 mg L^-1 (ppm), Citric acid 200 mg L^-1 (ppm), Aloe vera extract 20 ml/l, Aloe vera extract 40 ml/l, Borpota 1 ml/l and Borpota 2 ml/l.
The obtained results regarding that all the foliar studied treatments significantly increased growth parameters, i.e., plant height, both number of branches and leaves, and pod yield of sugar pea, i.e., average pod weight, number of pod/ plant, pod yield / plant, pod yield / feddan, pod length, and pod diameter. These results indicated that foliar application of ascorbic acid (vitamin c) at 200mgl^-1, being the most effective of all vegetative growth characters, and pod yield and its components of sugar pea. These treatments followed by the treatments of salicylic acids, citric acid, Aloe vera extract and borpota at high concentration fertilizer, respectively.
Conclusively, it can be concluded that using the bio- stimulants substrates (ascorbic acid, salicylic acid, citric acid, Aloe vera extract and borpota fertilizer increased the vegetative growth characters of plants, and pod yield and its components of sugar pea pods.