Effect of organic, chemical and biological phosphorus fertilizers on yield of bitter vetch (Vicia ervilia L.)

سپهری, علی and نقی پور, داود Effect of organic, chemical and biological phosphorus fertilizers on yield of bitter vetch (Vicia ervilia L.). In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In order to evaluate the effect of organic, chemical and biological fertilizers on grain yield and yield components of bitter vetch, a field experiment was conducted at the Agricultural Research Station, Faculty of Agriculture, Bu-Ali Sina University. Treatments included of combination of vermicompost manure (zero, 10 and 20 tons per hectare), phosphorus fertilizer (zero, 25, 50 and 100 %) and biological phosphorus fertilizer (consumption and non-consumption). Results showed that the greatest number of grain per plant was obtained with a combined consumption of 10 tons vermicompost, biological phosphorus fertilizer and 100% phosphorus fertilizer. But the highest of grain yield and biological yield were obtained by combined consumption of 20 tons vermicompost fertilizer and biological phosphorus fertilizer in 50% phosphorus fertilizer. The 100 grain weight was not affected by interaction between chemical fertilizer, vermicompost and phosphorus biofertilizer. According to our results, vermicompost fertilizer combined with chemical and biological phosphorus fertilizers is a suitable way to increase the performance of bitter vetch plant. Therefore the combine consumption of 20 tons vermicompost and biological fertilizer phosphorus can be reduced up to 50 percent of consumption of chemical phosphorus fertilizers.

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