EFFECTIVENESS OF FOLIAR FERTILIZATION WITH AMINO ACIDS AND HUMIC FERTILIZERS IN WINTER WHEAT AND SOYBEAN UNDER LOW-FERTILITY SOILS
Ramazanova R. Zhumagulova M. Tanirbergenov S. Sharypova T.
August 2025Society for the Advancement of Breeding Researches in Asia and Oceania
Sabrao Journal of Breeding and Genetics
2025#57Issue 41625 - 1633 pp.
The priority of agricultural development is to ensure a significant increase in crop yields while improving soil fertility through the use of fertilizers and reducing the ecological burden on the environment. The following study sought to assess the role of foliar fertilization with amino acid (Amino Turbo) and humic acid (Ruter AA and Geogumat) fertilizers on the grain yield of winter wheat (Triticum aestivum L.) and soybean (Glycine max L.). Field experiments conducted during 2023–2024 focused on the low-fertility soil, lightly irrigated sierozems, with phosphorus fertilizers as a baseline in the District Koksu, Zhetysu Region, Kazakhstan. Fertilizations occurred at key development phases, i.e., the first at BBCH (cereal development stage scale) 25–29 and the second at BBCH 30–31. Without foliar fertilizers, average yields were 3.26 t/ha in winter wheat and 3.07 t/ha in soybean. Ruter AA yielded the best result in winter wheat (4.64 t/ha), while Geogumat improved the soybean yield (4.13 t/ha). Amino Turbo was ineffective in winter wheat; however, it increased the soybean yield relative to the control. The combined application of humic and amino acid fertilizers with phosphorus supported 68%–84% yield potential in winter wheat and 92%–98% in soybean, maintaining optimal soil nutrient levels (20–40 mg/kg in wheat and 25–40 mg/kg in soybean). Overall, the humic acids (Ruter AA and Geogumat) significantly enhanced the yield potential, revealing the efficiency of this nutrient strategy for better plant growth and productivity.
amino acids , grain yield , growth traits , humic acids , leaf fertilizers , mobile phosphorus , soybean (Glycine max L.) , Winter wheat (Triticum aestivum L.)
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Uspanov Kazakh Research Institute of Soil Science and Agrochemistry, Almaty, Kazakhstan
Uspanov Kazakh Research Institute of Soil Science and Agrochemistry
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