Effect of Compost, chemical fertilizers and different kinds of manure on soil parameters and watermelon(Citrullus lanatus) yield

An experiment was conducted to evaluate the effects of compost, chemical fertilizers, and different kinds of manure and their combinations on soil parameters and watermelon yield in Kerman province (Baft city). A Randomized Complete Block Design with four replication and 9 treatment:1-control 2-cow manure five ton/ha 3-poultry manure five ton\ha 4-compost five ton\ha 5-compost 2/5 ton/ha 6-250 Kg Super phosphate triple/ha,250 Kg urea/ha and 100 Kg potassium/ha 7combination of compost 2/5 ton/ha and poultry manure 2/5 ton/ha 8-combination of compost 2/5ton/ha and cow manure 2/5 ton/ha 9-combination of compost 2/5 ton/ha and 125 Kg Super phosphate triple/ha,125 Kg urea/ha and 50 Kg potassium/ha, was used. Results of Experiment show that effect of treatments wasn't significant on soil pH and bush length. The most and the lowest salinity was measured in compost treatments and cow manure respectively. Fruit yield in five ton poultry manure\ha and combination of compost & chemical fertilizers have highest yield with an average weight of 7220 grams, and control has lowest yield (weight of 5670 grams) among treatments. The effect of compost on soil salinity limited the continuous use of compost in soils which are threatened with salinity stress in Kerman province.