ISSN 2285-1364, ISSN CD-ROM 2285-5521, ISSN ONLINE 2285-1372, ISSN-L 2285-1364

Research on biocomposite compost influence on the development of hybrid tomato seedlings "SYMPATHIE" F1 (family Solanaceae)

Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XVI
Written by Mona Elena POPA, Gabriela NEAŢĂ, Silvana Mihaela DANAILA-GUIDEA, Nicolae Florian CISMARU, Amalia MITELUT, Steven VERSTICHEL

Biodegradable composting materials production is growing because of the environmental protection requirements which are becoming more and more restrictive regarding the plastics obtained from petroleum resources. Safety requirements must be met if the compost product is designed and used for agriculture, so far, the harmful effects of solid waste was estimated based mainly on its chemical composition. Phytotoxicity is described as an intoxication of living plants when certain substances which are present in the environment, are accumulated in plant tissue. Plant material analyzed was the hybrid tomato seedlings "SYMPATHIE" F1 (family Solanaceae), resulting from seed germination in greenhouse multiplier conditions.Were tested two types of compost: compost Control: only biowaste and test compost: biowaste + composite (10% PLA / Ecoflex (50/50)-Rettenmaier15%) in three experimental series, representing three proportions of mixtures S1 (25%), S2 (50%) and S3 (75%).The behavior of seedlings in various mixtures of compost before transplantation was considered. Different components of mixtures and experimental variant blends themselves were analyzed to see the content of nutrients, in soluble forms which could be available to plants during the vegetation.After two months of agrochemical analyses performed weekly on tomato seedlings, the results showed that the cultivated version of the compost sample P 25% (25% compost from V2-variant and 75% Profesional substrate of brown peat and dark peat), recorded high supply of N (53,20ppm), P (307,80 ppm) and K (5600 ppm) which will be used for transplanting in the field or greenhouse lower consumption of nutrients for plant growth and development.The findings obtained from experimental samples were compared with values recorded in tomato seedlings that were grown in parallel only in Professional Substrate mixture of peat and peat-dark brown 75% 25%, as control.

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