impressibility of chickpea seed quality from different systems of increasing soil fertility

in order to evaluation the effects of different soil fertility systems on chickpea seed quality, field experiments were carried out in sanandaj agriculture research station of iran in 2007 and 2008 growing seasons. experimental units were arranged in split-split plots based on randomized complete blocks with three replications. green manure levels considered main plots, base fertilizer compounds were considered subplots and blends of biofertilizers were considered sub-sub plots. results showed that green manure increased seed nitrogen, phosphorus, magnesium, and manganese contents. also green manure had a significant effect on grain yield, protein percentage and crude fiber. application of organic fertilizers increased seed nitrogen, potassium, phosphorus, and magnesium contents. on the other hand, base fertilizers had a significant effect on chickpea seed sugars, starch and protein contents. biofertilizers also had significant effects on seed quality traits. interaction between green manure and basal fertilizers had a significant effect on grain yield, nitrogen, and magnesium and iron contact of seeds. the highest sugar, protein, starch and mineral elements contents were obtained from combined application of phosphate solubilizing bacteria and trichoderma fungus. simultaneous application of compost, farmyard manure and chemical fertilizer resulted in the highest seed nitrogen, potassium, phosphorus, magnesium, ciceritol, total sugar and protein contents. thus in addition to improve seed quality, simultaneous application of chemical fertilizer, farmyard manure and compost increased grain yield and can reduce chemical fertilizers usage and can be useful on biological and ecological aspects.