مقايسه خصوصيات فيزيكي - شيميايي ورمي كمپوست و كمپوست سرد و تاثير كاربرد آنها بر شاخص هاي رشد گوجه فرنگي

A Comparison of Physical and Chemical Characteristics of Vermicompost and Cold Compost and the Effect of their Application on Tomato Plant Growth Indices

Vermicompost is considered as a biofertilizer with many physical, chemical and biological effects on arable cultivated soils. Vermicompost can be used in the production of many different products such as tomato, carrot, lettuce, cucumber, cabbage, and even corn and wheat crops. The main purpose of this research was a verification of vermicompost and common compost as organic fertilizers for reducing or at least improving on the amount of chemical fertilizer consumption. For obtaining this goal, common compost and vermicompost were produced under similar conditions. Two replicates of cold compost and vermicompost in 3 levels of %1, % 2 and %3 were mixed with soil in separate pots and tomato (Lycopersicon sculentum, cherry) seedling transplanted into them. The results showed that plant height significantly increased in vermicompost treatments and biomass (dry matter) in vermicompost was also more than that for cold compost (P^O.Ol). Wet matter of plant tissues in vermicompost treatment showed a significant increase in comparison with cold compost. To some extent the amount of available Fe, Zn and Cu for all the cases indicated significant increase in vermicompost treatments (P-O.Ol).The vermicompost treatment with 60% cow manure had significant superiority in comparison with other vermicompost treatments. Thus, it was concluded that vermicompost with a higher fertility was of a better quality than cold compost.