study on the effect of chemical, organic and bio- phosphorus fertilizer on yield and essence of basil (ocimum basilicum)

this study was conducted to evaluate the effect of fertilizers on the yield and essential oils of basil. this experiment was carried out in completely randomized block design with three replications in jiroft area. the treatments included three levels of barvar 2 (10, 20 and 25 g/ha), cow manure at three levels (5, 10 and 15 ton/ha), ammonium phosphate and superphosphate triple each at three levels (50, 100 and 150 kg/ha). traits such as yield, plant height, seed number, panicle weight per plant, essential oil amount, leaf area, and leaf number were measured. the results showed that the treatments significantly affected yield, plant height, seed number, panicle weight per plant, essential oil amount, and leaf area at 1% level of significance but did not significantly affect the number of clusters and the leaf number. cow manure treatment had the highest yield, plant height, essential oil, weight per plant, number of leaves and leaf area. barvar 2 treatments had the highest effect only on the number of fertile seeds. fertilizer treatments of superphosphate triple had the greatest impact on the number of leaf clusters. overall, cow manures compared to other treatments had the highest impact.