16-03-2012, 03:57 PM
Protected Cultivation of Fruit crops
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Introduction
PROTECTED CULTIVATION
Protected cultivation can be defined as a cropping technique where the micro climate surrounding the plant body is controlled partially/ fully as per the requirement of the plant species grown during their period of growth
Greenhouse technology is the most practical way of achieving the goal of protected cultivation
WHY PROTECTED CULTIVATION ?
Crops could be grown under inclement climatic conditions when it is not possible to grow in open field
Efficient utilization of precious inputs like water and nutrients
Early nursery and early cropping
Higher productivity – enhanced crop duration
Superior quality of the produce
PRINCIPLES OF PROTECTED CROP PRODUCTION
The transparent cover acts as a radiation filter.
This phenomenon results in the trapping of solar heat, thereby raising the greenhouse temperature.
Lack of air exchange between the greenhouse and the ambient further enhances the heat retention capacity of a greenhouse.
This natural rise in greenhouse temperature coupled with available sun light helps successful production of crops during winters.