The agriculture sector has recently been confronted with new and concurrent challenges to increase productivity to feed the world’s growing population while also reducing environmental impact and preserving natural resources for future generations, all while maintaining low production costs to compete in a globalized economy 1, 2. This is an open access article distributed under the terms of the creative commons attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. Improving Peanut Productivity by Using Algae Extract Foliar Spray as Bio-Stimulant Under Reclamation Sandy Soils. Rasha Ramzy Mohamed Afify and Sona Salem El-Nwehy, 2022. Foliar application of fresh green algae proved to improve the growth, yield and oil content of groundnut. Conclusion: It can be concluded that this study pays attention to using green algae extracts as bio-stimulant due to the presence of some plant growth-stimulating compounds and their nitrogen, phosphorus and potash content. The percentage of increase over control treatment are 60.6, 62.4 and 74.5% in seed, pod and oil yield per fed, respectively. Fresh green algae treatment with 2 g L ≡ surpassed other treatments in seed yield, pod yield and oil yield. The use of fresh green algae significantly improved plant vegetative growth characteristics, chlorophyll, N, P and K content of leaves and seed production quantity and quality. Results: All foliar sprays with algal extracts significantly boosted all of the examined parameters. A complete randomized block design with three replications was utilized, with foliar sprays of fresh green algae (1, 2, 3 and 4 g L ≡), dried green algae (1, 2, 3 and 4 g L ≡) and control (spray with water). Materials and Methods: During the two growing summer seasons of 20, two field experiments were conducted in South Tahrir Province, El-Beheira Governorate, Egypt to investigate the impact of foliar spraying with fresh and dried green algae extracts on groundnut ( Arachis hypogaea L.). The objective of this study was to study the effect of foliar application of algal extracts as bio-stimulants for improved groundnut growth and seed yield parameters. Background and Objective: Green technology has been used to generate bio-fertilizers in the most environmentally friendly way possible.
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