Variações microclimaticas no interior de ambientes protegidos cobertos com diferentes filmes plásticos, em São Manuel (SP).

Abstract

It was evaluated the inside environments of shelters for protected cultivation, covered with polyethylene fillms of different characteristics, which were compared to the open field condition, at São Miguel (SP), from april, 29th to july, 5th of 2005. It was obtained the maxima, minima and average values air temperature and relative humidity, as well as the daily total radiant flux density and daily total PAR radiation, in each environment. Sensible microclimatic changes were observed inside the shelters, with an increase in the air temperatures and a decrease in the daily total radiant flux density and daily total PAR radiation, when related to the open field, but no relevant changes in air relative humidity were verified.