ZONING OF CLIMATIC RISKS FOR WHEAT IN RIO GRANDE DO SUL, SOUTHERN BRAZIL
Abstract
The climatic variability is a risk factor to agricultural activities. In Southem Brazil the main climatic risks forwheat production are frost at anthesis and excess rainfall at harvest time. This study of climatic risks zoning integratestechniques of crop modeling and simulation with geoprocessing tools in order to indicate the areas with lower risks for wheatcrop in Rio Grande do Sul, for each sowing period. The analysis of the risk maps shows that there is variability of climatic risksfor wheat growing in the State, according to the region and sowing period. The combination risk of frost at anthesis with riskof excess rainfall at harvest was used to define, for each County, the wheat sowing period of minimum risk, where the risk oflosses, due to the climatic factors studied, remained bellow the high risk range in 80% of the years.
Downloads
The authors declare that the work has not been previously published, nor sent simultaneously for publication in another journal and that they agree with the submission, content and transfer of the publication rights of the article in question to the scientific journal Pesquisa Agropecuária Gaúcha - PAG. The authors assume full responsibility for the originality of the article, and may incur on them any charges arising from claims by third parties in relation to the authorship of the article. The full reproduction of the journal's articles in other free-to-use electronic media is permitted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
