Examination bioproducts in greenhouse cucumbers Defense F1 variety according to the growth medium

Abstract

The experimental work was conducted with cucumber variety Defense F1 (Netherland) in 2005 – 2007 in unheated Venlo type greenhouse in the Maritza Vegetable Crops Research Institute, Plovdiv, Bulgaria. The purpose of the research is to determine the influence of bioproducts on the biological expressions and productivity of greenhouse cucumbers, grown as soil and soilless culture. The growth expressions of cucumber variety Defense F1 are not significantly influenced by the bioproducts type and the growth medium. Identical tendency of leaves formation was found in both growth mediums. In comparison with the soil growth, adding of the bioproducts: Biolife, Biohumus, Trichodermin and Humustim (foliar) to the nutrient regime of the substrate culture proved to increase the first quality production formation (from 18.5% to 42.5%). The highest total yield in Defense F1 variety is obtained after combined treating with Biohumus and Humustim (9603 kg/da) in soil culture and with Biolife (11 422 kg/da) in soilless culture which exceeded the controls with 25.9% and 23.8%, respectively. In comparison of the two growth mediums it was stabled proven higher yields in the soilless culture after treating with Biolife (36.1%) and Biohumus (29.8%).