International Journal of Plant & Soil Science

A field trial was conducted during Kharif 2024 at Anurag University, Hyderabad, to evaluate the bioefficacy of an amino acid based biostimulant formulation with surfactant on the growth and yield of groundnut (Arachis hypogaea L.). The formulation, designed to enhance nutrient absorption and stress tolerance, was applied as a foliar spray in varying concentrations (2 ml/l, 3 ml/l, 4 ml/l, and 5 ml/l) in addition to a control treatment and a recommended dose of fertilizers (RDF). Results demonstrated that the application of the amino acid based biostimulant with surfactant at 3 ml/l (T₄) significantly improved key growth parameters such as plant height (27.25 cm), leaf area (6.12 cm²), root length P (21.13 cm), and dry matter accumulation per plant (36.33 g/m²). Yield components, including pod length (33.63 mm), number of pods per plant (35.00), and pod weight (2.40 gm), were also markedly enhanced at this concentration. Treatment T₄ was identified as the most effective and economical concentration, offering comparable or superior results to higher dosages, highlighting its potential for cost-effective crop improvement. The study concluded that the amino acid based biostimulant with surfactant formulation, particularly at 3 ml/l, provides a promising solution for enhancing groundnut productivity by improving nutrient uptake and supporting growth.