DIFERENTES DOSES DE STIMULATE SOBRE MUDAS DE CAFÉ

Abstract

Brazil, being the largest exporter of coffee in the world, is a great representative in national agriculture, with world production corresponding to 34.64% of all coffee production in the world. Productivity is estimated for 2020 from 30 to 33 bags of coffee per hectare, expressing an increase between 11.4% and 20.9% compared to the previous harvest (CONAB, 2020). The coffee production and growth process is linked to the balance hormones known as, auxins, gibberellins and cytokinin. Can be generated naturally by plants, or being applied artificially to improve physiological processes (WU, 2018). As it is a perennial crop, the moment of implantation of the coffee plantation is extremely important. Crop formation will be the basis for reaching high gains in productivity, which will result in a decrease in production costs and consequently it will increase the producer's income. In this way, the seedling is a fundamental input for success in coffee cultivation. For (MATIELLO, 2010) a coffee seedling with good genetic load, and a great influence of the system root and aerial parts, will influence positive aspects in the resulting years of cultivation. New products and techniques are being used to increase quality seedlings, both in physiological and morphological quality, and in the act of commercialization, seeking to increase performance and development when transplanted into the soil. Among the products sold are the biostimulants, which are defined as bioregulators and different compounds such as amino acids, vitamins and minerals (STADNIK et al., 2017).Biostimulants are solutions that will produce a good response in the culture development, through greater tolerance to abiotic stresses. All of these effects are related to the hormonal work of plants (LIBERA, 2010). Second (SILVA et al, 2013) these biostimulants could improve the cell prolongation and cell division, improving nutrient absorption and waters, and when applied together with foliar fertilizers the use of nutrients and their absorption will be greater. The biostimulant (Stimulate) will generate synergistic effects between regulators plants, presenting synergistic actions between each regulator, organic compounds that, when applied to the plant, inhibit, modify or promote some physiological or morphological processes of the plant (CASTRO et al, 2010). This Stimulate is characterized as a biostimulant containing phytoregulators. Its basic compositions are 0.009% of kinetin (cytokinin), 0.005% indolbutyric acid (auxin) and 0.005% gibberellic acid (gibberellin). This situation will determine the effect of Stimulate on the development and seedling growth (CASTRO et al, 2010).