RESEARCH CONCERNING THE EFFECT OF SUPPLMENTARY PROTECTION WITH DIFFERENT TYPES OF MATERIALS IN GREENHOUSES TO RADISH CROP
To obtain early production of vegetables, with a view to marketing at profitable prices, in practice, it recourse to different methods to improve the cultivation technologies in protected spaces. One of additional possibilities is the supplementary protection of the cultures with the different materials, against low temperatures to save energy from conventional sources.
From vegetable species that are suitable for this crop system, there are also radishes, that have minimum germination temperature of 3-40C, and the optimum of 12-140C, and the growing season is short, only 28-50 days.
At the Banu Maracine Research Station it was studied an experimental model regarding the use of material culture frost protection, to radish crop, against the frost ensuring optimal micro-climate, without using high energy heat consumption.
Radishes crop was established in the third decade of February, in the solar. The biological material was represented by Sora cultivar and were studied the next variants: V1-control experience without protection V2-protection with manure, half fermented and well cut, V3 - protection with perforated polyethylene V4-protection with Agril microporous foil type (50gr/m2) V5-protected with microsporous foil Agril type (17gr/m2).
From the experimental results it is found that in terms of production efficiency and precocity, the weakest was variant V1 and the highest efficiency was found to variant V5.