Amino acids foliar application for maximizing growth, productivity and quality of peanut grown under sandy soil

Abstract

Two field experiments were conducted during 2019 and 2020 summer seasons at the experimental station of national research center, Al-Nubaryia district, El-Behaira Governorate, Egypt, to study the effect of Phenyl alanine and Aspartic acid foliar fertilizers at rates of (0.0, 50, 75 and 100 ppm) on morphological characters, photosynthetic pigments, seed yield and its components as well as seed quality of groundnut grown under sandy soil. Results indicated superiority of aspartic acid over phenyl alanine on increasing different growth parameters, chlorophyll b, biological and seed yields/plant, biological, seed and oil yields (kg/fed.), % of carbohydrate in peanut seeds. Meanwhile, phenyl alanine was superior on increasing carotenoids, indole acetic acid, phenolics, free amino acids, flavonoids, Lycopene, β-Carotene contents, antioxidant activity expressed as (1,1-diphenyl-2-picrylhydrazyl DPPH %) and shilling percentage. In addition, aspartic acid and phenyl alanine with various levels caused significant increases in growth and seed yield quantity and quality of peanut plants through increases in photosynthetic pigments, indole acetic acid, phenolics and free amino acids contents. Aspartic acid was more effective than phenyl alanine, Foliar treatment with 100 mg/L aspartic acid increased oil yield (700.36 over 568.05 ton/fed.) and seed yield (1531.98 over 1253.49 kg/fed.). Finally, it can conclude that using aspartic acid and phenyl alanine as foliar treatment improved growth and yield of ground nut plants under sandy soil.

Foliar Application of Amino Acids and Nutrients as a Tool to Mitigate Water Stress and Stabilize Sugarcane Yield and Bioenergy Generation

“…The smaller stalk diameter in the control treatment can be explained by the greater competition for photoassimilates between the leaves and stalk of the plant. Amino acids directly impact plant nutrition by increasing the efficiency of nutrient absorption, transport, and assimilation [48,62,89]. The application of ASPC may have improved the water use efficiency of sugarcane, thereby increasing the photosynthetic rate and the transport of sugars that provide metabolic energy for stalk growth.…”

Amino Acids Biostimulants and Protein Hydrolysates in Agricultural Sciences

“…[111] Peanut (Arachis hypogaea L.) Fabaceae Foliar utilization of 100 mg/L aspartic acid can increase seed and oil yield. [112] Pepper (Capsicum annuum L.)…”

Impact of biostimulants based amino acids and irrigation frequency on agro-physiological characteristics and productivity of broccoli plants

“…Table 10. Effect of interaction between irrigation frequency and biostimulants on broccoli yield and its quality Improvement in yield, head weight, head diameter, head height, and TSS content due to foliar spraying with amino acids biostimulants could be attributed to stimulation of root growth, increased proliferation of root hairs which enhanced nutrient uptake and water absorption (Sadak et al, 2023).…”