FALL/ WINTER BEAN CROP LOAM IN ASSOCIATION WITH BIOSTIMULANT APPLICATION AND FOLIAR FERTILIZER IN BOTH PRESENCE AND ABSENCE OF IRRIGATION

Abstract

The objective of this present study was to assess the efficacy on utilizing biostimulant and Calcium (Ca) and Boron (B) leaf sprays in different bean crop phenological stages in sandy soil, under irrigated and non-irrigated systems. Treatments utilized in this experiment received foliar biostimulant applications (0.9 g dm^-3 kinetin: kitocynin-related; 0.5 g dm^-3 giberelic acid: giberelin-related; and 0.5 g dm^-3 indolbutiric acid: auxin-related) in doses of 0.75 dm³ ha^-1 e de 3 dm³ ha^-1 of a mixture of Calcium (10%) and Boron (2%). Applications were carried out during both V4 (third trifoliate leaf) and R5 (blooming) plant phenological stages, isolated or combined in areas with and without irrigation, except for the witness (treatment without irrigation and without spraying). Analyzing the results, it can be concluded that irrigation, because of the water deficit frequency that occurred in the northwest of Parana, is confirmed as a tool to promote productivity increased of the bean crop. The application of biostmulant and Ca + B, associated or not when sprayed at different phenological stages of the bean crop did not show improvement in culture performances.