MICROCLIMí ?? TIC PARAMETERS ASSESSED IN DIFFERENT ARCHITECTURES SECURE ENVIRONMENT, WITH AND WITHOUT NEBULIZAcA0 GROWING IN CAULIFLOWER (Brassica oleracea var. Botrytis), UNDER CONDITIONS CLIMí ?? STICS of Bethlehem (PA)

Abstract

In this work objetivou- studying microclimatic variables such as: (. K pa) air temperature (° C), relative humidity (%) and deficit of saturation vapor in different models of greenhouse structure with or without the misting System, where cauliflower cv was cultivated Sun back. 0 experiment was conducted at the Federal Rural University of Amazonia, in the city of Belem-PA, which has a height of 9m, latitude 1 ° 28 'S and 48 ° 30' Wr, in the period from November to February / 2000. 0 experimental design was completely randomized, with four replications. Microclimatic conditions differ depending on the architectural model. During the hottest hours of the day, ACN and LCN environments had lower temperatures by up to 4.5 ° C when compared with the other treatments without fogging no statistic difference. Environments with fogging deficits had the lowest saturation vapor. Plants grown in LCN environment showed higher percentage of flowering, major curd weight and therefore higher productivity, differing from all other treatments. Plants grown in the Test environment. had lower average weight per head, providing well below all other productivity. In this work objetivou- studying microclimatic variables such as: (. K pa) air temperature (° C), relative humidity (%) and saturation vapor deficit, in different models of structure protected environment with or without the misting System, where cauliflower cv was cultivated Sun back. 0 experiment was conducted at the Federal Rural University of Amazonia, located in the municipality of Bethlehem Pa, which has a height of 9m, latitude 1 ° 28 'S and 48 ° 30' Wr in the period November to February / 2000. 0 experimental design was completely randomized, with four replications. Microclimatic conditions differ depending on the architectural model. During the hottest hours of the day, ACN and LCN environments had lower temperatures by up to 4.5 ° C when compared with the other treatments without fogging no statistic difference. Environments with fogging deficits had the lowest saturation vapor. Plants grown in LCN environment showed higher percentage of flowering, major curd weight and therefore higher productivity, differing from all other treatments. Plants grown in the Test environment. had lower average weight per head, providing well below all other productivity.