Research Journal of Agronomy
ISSN: Online 1993-6060ISSN: Print 1815-9354
Abstract
Soybean (Glycine max L.) is of considerable importance in Uruguay as an export crop, however, significant variations in the production occur due to the impact of prolonged droughts and/or extreme temperatures mostly during the grain filling period. Biostimulant Substances (BS) as the humics cause effects on crops as better efficiency in nutrient absorption, increases yield and root growth as well as tolerance to abiotic stress. Data from farm trials during six years on the effect of an humic bio stimulant applied at 4 L ha–1 rate (treated) vrs (untreated check) at the R2-R3 development stage on crop strips across the farm field was collected at 85 localities of 15 Departments of Uruguay. The observed yield (g/plant) and the yield components (pods/plant and grains/plant) were significantly increased by the application of the humic substance in all years and localities tested where soybean crops have endured a range of different types of climates from water and hight temperature stresses, excessive rainfall and years with very favorable conditions. The historical behavior of the humic biostimulation technique shows that it can be adopted by soy producers under the evidence that the yield per plant depends on the amount of pods and grains per plant that are increased in all cases by the application of humic. The exogenous application of humic SB as part of the present agronomic management for extensive soybean field crops can be used to promote sustainable intensification. Further development of this technology requires incorporating the topic of biostimulants within the research programs of national agricultural R&D institutions focusing on the mechanisms of action, forms and times of application. This technology can be pursued in legume crops as a short term and low cost improvement to be adopted by soy farmers.
How to cite this article:
Juan Izquierdo and Gustavo García Pintos. Multiyear Study on the Yield of Soybean as Affected by Humic Biostimulation at Uruguay.
DOI: https://doi.org/10.36478/rjagr.2021.1.6
URL: https://www.makhillpublications.co/view-article/1815-9354/rjagr.2021.1.6