Effects of different organic and biological fertilizers on yield and yield components of chickpea (Cicer aritenium L.)

In order to evaluate the effects of different organic and biological fertilizers on chickpea (Cicer aritenium L.) yield and yield components، field experiments were carried out in Sanandaj Agriculture Research Station in 2007 and 2008 growing seasons. Experimental units were arranged in split-split plots based on randomized complete blocks with three replications. Main plots consisted of (G1): establishing a mixed vegetation of Vicia panunica and Hordeum vulgare and (G2): control، as green manure levels. Also، five strategies for obtaining the base fertilizer requirement including (N1): 20 t. ha-1 farm yard manure; (N2): 10 t. ha-1 compost; (N3): 75 kg. ha-1 triple super phosphate; (N4): 10 t. ha-1 farm yard manure and 5 t. ha-1 compost and (N5): 10 t. ha-1 farm yard manure and 5 t. ha-1 compost and 50 kg. ha-1 triple super phosphate were considered in split plots. Four levels of biofertilizers including (B1): Bacillus lentus and Pseudomonas putida; (B2): Trichoderma harzianum; (B3): Bacillus lentus and Pseudomonas putida and Trichoderma harzianum; and (B4): control، (without biofertilizers) were arranged in sub-sub plots. Results showed that green manure had a significant effect on grain yield، pod number، pod fertile number، number of main shoot and leaf chlorophyll content. Also different fertilizer compounds had a significant effect on grain yield and yield components. The highest grain yield was obtained from combined application of compost، farmyard manure and chemical fertilizer. Biofertilizers also had significant effects on grain yield and yield components. Simultaneous inoculation via phosphate solubilizing bacteria and Trichoderma fungus resulted in significant increase of grain yield. The highest seed weight and seed number per pod were obtained in this treatment.