Components of solar radiation in sweet pepper crop in protected environment and field

Abstract

With the objective of evaluating the effect of the polyethylene of low transparent density in the levels of the components of the solar radiation during the cycle of the culture of hybrid sweet pepper Elisa in protected environment and field, it used a system of automatic acquisition of data to make measures of those components in the period from 21 April 1999 to 3 November 1999. In days with cloudy sky the values of global solar radiation and diffuse practically didn't differ in the two environments. In days with clean sky the diffuse solar radiation was larger in protected environment. It observed values attenuated of global solar radiation and reflected along the cycle of the culture inside the protected environment. In percentile, the protected environment it presented values of global solar radiation and reflected inferior in 44.10 and 45.96%, respectively, and superiors for diffuse solar radiation in 7.40% with relationship to the field. The protected environment presented plants of sweet pepper with larger growth and development, larger productivity of fruits and larger efficiency in the conversion of the incident energy in MJ for kg of produced fruit