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Abstract
The use of hydrogels helpsthe production of plants in drought-stress environments. Thus, this work evaluated using different hydrogels to minimize drought stress in soybean cultivation. The treatments employed two different hydrogels, one already commercialized and the other produced with cashew gum (Anacardium occidentale), five levels (0, 30, 60, 120, and 240 mg pot−1) of the hydrogels, and two levels of drought stress in sandy soil. The growth and yield of soybeans and the levels of macro- and micronutrients in soybeans were evaluated.growth. The use of CG hydrogel promoted 12% increase in protein content in the seeds in the when soybean plants were subjected to drought stress. The levels of 30 mg pot-1, corresponding to 7.5 kg ha−1, improved the ’morphological and productive parametersof the soybeans. The increasing levels of hydrogel promoted the increase in P, K, Ca, Mg, and Fe and reduced S and Cu on an exponential scale. The use of cashew gum hydrogel increased the K and Ca contents in soybean seeds compared to commercial hydrogel.
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1 Federal University of Mato Grosso do Sul (UFMS), Agronomic Departament, Chapadão do Sul, Brazil (GRID:grid.412352.3) (ISNI:0000 0001 2163 5978)
2 Federal University of Piauí, Agronomic Departament, Bom Jesus, Brazil (GRID:grid.412380.c) (ISNI:0000 0001 2176 3398)
3 Federal University of Piauí, Department of Animal Science, Agricultural Science Center, Teresina, Brazil (GRID:grid.412380.c) (ISNI:0000 0001 2176 3398)
4 LIMAV, Piauí, Federal University, Interdisciplinary Laboratory for Advanced Materials, Teresina, Brazil (GRID:grid.271300.7) (ISNI:0000 0001 2171 5249)
5 State University of Mato Grosso do Sul, Department of Crop Science, Cassilândia, Brazil (GRID:grid.473010.1) (ISNI:0000 0004 0615 3104)
6 State University of Maranhão, Agronomic Departament, Balsas, Brazil (GRID:grid.459974.2) (ISNI:0000 0001 2176 7356)
7 Campina Grande Federal University, Veterinary Medicine Academic Unit, Patos, Brazil (GRID:grid.411182.f) (ISNI:0000 0001 0169 5930)
8 National Intercultural University of Quillabamba, Cusco, Peru (GRID:grid.411182.f)
9 National University of Moquegua (UNAM), Ilo, Peru (GRID:grid.411182.f) (ISNI:0000 0004 6022 2932)