No abstract

The rational use of mulch associated with plasticulture involves the optimization of all bioclimatic parameters so as to minimize the considerable expenses engendered by use of this technology. The primary objective of this project is to study the influence of the transmission and the reflection of light involving different colored plastic film on the development and productivity of peppers. Spectroradiometric measurements between 400 and 1100 nm indicate that brown, red, and gray are the most opaque to light. Higher temperature were measured under clear, red, brown, and green plastic mulch. The greenhouse study shows that young plants subjected to white mulch and gray mulch grew into plants whose leaf surfaces were weaker than those subjected to other materials. Earliest yields were obtained from clear and red mulch. There was no significant differences noted in total yield.

In Québec the intensive use of plastic films in field production of vegetables and fruit is evident by increased acreage for this sector of agriculture since 1985. This technique is used particularly for sweet corn, cucurbitaceae and solanaceae, and strawberry production. Since 1987 some research projects have been established by the research and development division of the Quebec ministry of agriculture (MAPAQ) to adapt this technology to the Québec climate and to the needs of producers. The objectives of MAPAQ researchers are to extend the production season, improve the quality and productivity of fruit and vegetable crops, diminish production costs, and propose profitable alternatives for controlling crop pests.

No abstract

No abstract