How Does the Addition of Biostimulants Affect the Growth, Yield, and Quality Parameters of the Snap Bean (Phaseolus vulgaris L.)? How Is This Reflected in Its Nutritional Value?

Abstract

Recently, the use of biostimulants as natural and eco-friendly fertilizers has received increasing attention because of their efficiency in terms of improving crops’ qualitative and quantitative parameters, i.e., growth, yield, and chemical composition. We studied the effect of four biostimulants—humic acid (20 g/L), vermicompost tea (15 mL/L), moringa leaf extract (1:30 v/v), and yeast extract (5 g/L), with tap water as a control treatment—on the qualitative and quantitative characteristics of snap beans. The experiment was designed using a complete randomized block with triplicates. The results showed a significant improvement in treated plant performance (growth and yield), chlorophyll, and chemical composition compared to untreated plants. Using moringa leaf extract increased the plant height, number of leaves and branches/plant, and fresh and dry weight. Additionally, the diameter of the treated plant stems and the quality of the crop and pods were also significantly higher than those of plants treated with vermicompost or humic acid extract. It is also noted that the profile of amino acids was improved using all tested biostimulants. This leads to the conclusion that the addition of moringa leaf extract and vermicompost tea not only positively affects the qualitative and quantitative properties of snap bean but is also reflected in its nutritional value as a plant-based food.

The Effect of Biochar and Extract of Organic Fertilizer on the and Yield of Wheat (Triticum aestivum L.)

“…The results of table (3) indicate that there are moral differences in the addition of organic fertilizer extract to the soil in grain crop values, as the B3 transaction exceeded all transactions by 4.620 mg e -1 . This is consistent with the arrival of [20] when adding three organic fertilizers for two consecutive seasons (Fermbost Tea 15ml -1 , yeast extract 5ml -1 and humomic acid 20gl -1 ) and studying their impact on growth qualities and the yield, which is morally higher than Cambost Tea in the overall outcome compared to the comparison. The results in table (3) show that there are moral differences between the interference between bio-coal and organic fertilizer extract in grain crop values, with the highest A3B3 transaction of 4.896…”

How Nutritious Are French Beans (Phaseolus vulgaris L.) from the Citizen Science Experiment?

“…Fukuji et al [ 12 ] reported higher concentrations of the EAAs Val , Lys , Leu , and Phe and the NEAAs Glu , Pro , and Try in French bean genotypes compared with our data, whereas Asp and Ser were lower. Similarly, El Sheikha et al [ 20 ] reported higher Lys and Arg content and lower Asp and Ser content in pods of French bean variety Polista treated with biostimulants during growth. Moreover, in the study by Nemeskéri [ 26 ], shelled and dry beans had higher concentrations of the EAA Phe and the NEAAs Glu and Tyr , while Asp and Ser were also lower.…”

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“…Humic acid-enhanced N accumulation and thus improved chlorophyll content in the plant; however, the concentration of the humic substance is the matter (Malik & Azam, 1985;Xu et al, 2012). Also, humic acid application significantly increased the soil plant analysis development (SPAD) reading of the snap bean plant (El Sheikha et al, 2022). In addition, humic acids relieve adjusting plant chlorosis, strengthen plant enzyme systems, and enhance the permeability of the plant membranes (Khaled & Fawy, 2011).…”

“…The dilution from 1:10 to 1:20 can obtain optimum plant growth (Pant et al, 2012a(Pant et al, , 2012b. The tea and humic acid positively affected plant growth, yield, quality, and nutrition (El Sheikha et al, 2022). Besides, vermicompost tea can be produced by leaching the solution during the composting process, which also contains micronutrients, fulvic acid, and humic acid to improve plant growth (Gutiérrez-Miceli et al, 2008).…”

“…Besides, vermicompost tea can be produced by leaching the solution during the composting process, which also contains micronutrients, fulvic acid, and humic acid to improve plant growth (Gutiérrez-Miceli et al, 2008). Vermicompost tea might be allowed insignificant changes in transamination and deamination reactions in the amino acid profiles (El Sheikha et al, 2022). Vermicompost tea contained more humic acid than vermicompost (Pant et al, 2012a).…”