AGRONOMIC CHARACTERISTICS OF CORN GRAIN CORRELATED TO TREATMENTS WITH Azospirillum brasilense, SILICION AND NITROGEN FERTILIZATION
Abstract
This work aimed to analyze the effects of using the Azospirillum brasilense bacteria with different doses of calcium and magnesium silicate applied on the soil, at different levels of nitrogen fertilization for the topdressing, on the agronomic characteristics of corn grain. The experiment was carried out in the Midwest region of Goiás under a randomized block design, in a 2x3x2 factorial scheme, formed by 2 doses of N in topdressing; 3 doses of Azospirillum brasiliense; and 2 doses of CaSiO3 and MgSiO3. The various agronomic characteristics of maize evaluated were plant height and stem diameter with 35 and 55 Days After Seedling Emergence, weight of 100 grains and yield, highlighting results of 30.7 and 29.2 g for weight of one hundred grains and 6712, 9 and 6390.5 kg ha-1for yield, and both results were obtained on the dosages of 50 kg ha-1 of N in topdressing and 200 kg ha-1 of fertilization with CaSiO3 and MgSiO3. The dosages of 50 kg ha-1 of N in topdressing and 200 ha-1 of CaSiO3 and MgSiO3 in planting increased the height of plants with 35 DASE, weight of one hundred grains and yield, although the interaction of these two treatments did not provide a significant difference, confirming in this way the importance of N fertilization in topdressing, and showing that the recommended CaSiO3 and MgSiO3 dosage for corn crop is less than 400 kg ha-1.Downloads
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