AGROCLIMATIC RISK ZONING FOR GUAVA (Psidium guajava L.) IN PARANÁ RIVER BASIN 3

Nathan Felipe Da Silva Caldana,Paulo Henrique Caramori,Pablo Ricardo Nitsche,Luiz Gustavo Batista Ferreira,Alan Carlos Martelócio,Jorge Alberto Martins

doi:10.32404/rean.v7i2.4025

Abstract

Fruticulture constitutes an important sector of the Brazilian agricultural industry. Despite technological and scientific advances, climate is still the most important variable defining crop productivity. Because of this, agroclimatic zoning should be one of the first factors to consider when starting to plant a particular crop. The objective of this work was to conduct climate risk zoning for guava (Psidium guajava L.) in Paraná river basin 3, Paraná, Brazil, using meteorological data from 43 stations collected between 1976 and 2018. The climate risk analysis was based on the climatic factors that impact the species, such as rainfall, annual water deficit, average annual temperature, coldest month temperature, and risk of frost. The findings of this study suggest that the basin has areas with a low climate risk for guava cultivation. Precipitation and water balance were sufficient under all tested scenarios. The most limiting factor for production was frost, but with risk only present during the first years of cultivation. Despite this, planting restrictions were only predicted to occur in the far west portion of the basin. Agricultural techniques that reduce the risk of frost and avoiding areas with greater frost incidences are the two most important aspects to consider to ensure greater success for guava in the region.

Highlights

Fruticulture is an agricultural activity that contributes significantly to national economic development in Brazil
Among the agrometeorological information employed in agricultural planning, agroclimatic risk zoning is the most wellknown to apply in agriculture
The guava tree (Psidium guajava L.) is a perennial tree belonging to the Mirtaceae family

Summary

Introduction

Fruticulture is an agricultural activity that contributes significantly to national economic development in Brazil. Fruticulture, as an agriculture sector, is enmeshed in the risks and uncertainties that meteorological and climatic elements pose, causing variability in production and necessitating different in fruit growing management practices (Mustafa et al, 2018; Oliveira et al, 2018; Somboonsuke et al, 2018; Tayt'sohn et al, 2018; Agovino et al, 2019). The guava tree (Psidium guajava L.) is a perennial tree belonging to the Mirtaceae family. It is a rustic and native plant from the tropics, adapts to environmental variation, and can develop in both tropical and subtropical climates. In south Brazil, the state of Rio Grande do Sul plays host to the largest cultivated area of guava tree production (Almeida et al, 2014)

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