Biostimulants to mitigate heat stress in soybean seed germination
DOI:
https://doi.org/10.5902/2179460X87738Keywords:
Abiotic stress, Trichoderma, Plant growth promoterAbstract
This study addresses the impact of high temperatures on soybean seed germination and proposes the use of biostimulants as a strategy to mitigate heat stress. The experiment adopted a completely randomized design, in a 4 x 3 bifactorial scheme (four combinations of biostimulants x three different temperatures). Parameters were analyzed to assess the physiological quality of the seeds, including the germination test, first count, germination speed index, root and shoot length, as well as the dry mass of the seedlings. The results indicated that biostimulants played an important role in promoting the initial germination of soybean seeds, even under different heat stress conditions. Both the isolated application of the AllRefresh® biostimulant and its association with Trichoderma harzianum demonstrated significant beneficial effects. These findings highlight the promising efficacy of biostimulants in improving the resistance of soybean seeds to heat stress, as well as contributing to the practical understanding of the application of these products, offering valuable insights for optimizing germination and initial seedling growth in challenging environments. The strategic use of biostimulants or plant stimulants can be a sustainable and effective tool to boost soybean productivity, especially in adverse temperature scenarios.
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