Response of corn (Zea mays) crops to different biofertilizer application strategies
Keywords:
seed, foliar, furrow, mycorrhizaAbstract
Today's modern agriculture is seeking sustainable production alternatives, and the use of biofertilizers is one such option. The objective of this research was to evaluate the implementation of various commercial biofertilizers, delivered through the seed, foliage, and furrow, in corn cultivation. The experiment was carried out in a plot located in Minga Guazú, in the department of Alto Paraná, Paraguay. Plant height, root fresh weight, foliar nitrogen and phosphorus were evaluated. The design was a completely randomized block, with a bifactorial arrangement, 4x3, factor one (four biofertilizers, Azospirillum brasilienses (Ab), Bacillus subtilis (Bs), Pseudomonas flourences (Pf) and mycorrhiza (M)) and factor two (three application methods, seeds (S), furrow (s) and foliar (f)), being twelve treatments and three blocks, totaling 36 experimental units. The data were submitted to ANOVA and compared using the Tukey test. The results indicate an interaction only for the root dry weight variable, with a p-value of 0.0001. Plant height was influenced by treatments that received biofertilizers such as Pseudomonas flourences, mycorrhiza, Basillus subtilis and Azospirillum brasilienses, compared to the control, with averages of 1.89, 1.89, 1.88, and 1.87 and 1.81 meters, respectively, and the best in terms of application methods were seed and foliar with 1.92 and 1.88 meters. There was no incidence of the treatments on the concentration of nitrogen and phosphorus in the corn leaves.
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