Intensificações de doenças em pomares de uva na Zona da Mata de Pernambuco tem causas externas.

Objetivando-se avaliar a causa das perdas dos frutos de uva no Município de São Vicente Férrer, realizou-se uma inspeção com coletas de material vegetal para análises patológicas em laboratório da UFRPE, bem como também foram realizadas análises "in loco

Diferentes classificadores na predição de classes de solos em mapeamento digital.

ABSTRACT: The study had as objective to develop techniques for digital soil mapping with support of main parameters of relief descriptors, of geologic map and pedological map pre-existing of Dois Córregos (SP, BRAZIL) sheet (1:50,000 scale), using data mining techniques. It was built a database from digital topographic and thematic, and data from soils and geology. Were calculate geomorphometric slope, curvature in plan and in profile and diagonal distance of the drainage area of study. These parameters and the geological map units were crossed through georeferencing the pedological map, enabling the construction of a matrix relating soil mapping units with original caption and simplified legend to the topography and geology parameters of reference areas.. This matrix was analyzed by three different techniques of machine learning, decision trees, k-NN and Naive Bayes, who predicted the soil mapping units. We evaluated soil mapping units accuracy individually and overall maps accuracy. Our results demonstrate that increasing number of records for training the algorithm increased the individual mapping units accuracy and maps. The decision tree algorithms and k-NN had the highest accuracy in both types of legend, but low in relation to training maps.SBSR 2011

Diagnóstico socioeconômico da cultura do feijão no Brasil.

Este documento visa oferecer, de forma sucinta e objetiva, uma contribuição atualizada aos estudos socioeconômicos da cultura do feijão no Brasil. Trata-se de uma cultura de extrema importância, explorada tanto no nível da propriedade de cunho familiar quanto por empresários rurais e que, além disso, diariamente compõe a dieta nutricional dos brasileiros. Assim, o conhecimento do contexto socioeconômico por meio de avaliações analíticas pode contribuir para a tomada de decisões pelos formuladores de políticas para o setor.bitstream/item/85928/1/DC-94.pd

Water use efficiency in bananas pome type cropsusing empirical coefficient based on leaf area.

The aim of this work was to evaluate the yield and water use efficiency (WUE) of banana ?Prata-Anã? (AAB) and ?BRS Platina? (AAAB) during two cycles of production in a semi-arid climate of Brazil (classified as Aw according Köppen)