Effect of Organic, Chemical and Biological Fertilizers on Yield and Efficiency of Nitrogen and Phosphorus in Portulaca (Portulaca oleracea L.)

Abstract

In order to investigate the effect of organic, biological and chemical fertilizers on the yield and yield components of purslane seed, an experiment was conducted in a factorial randomized complete block design with three replications. Experimental treatments were based on a combination of four sources of nitrogen supply: cow manure, vermicompost, fertilizer and control , and four types of biofertilizer including: nitroxin , mycorrhiza , Biosulfur and control . The results showed that the effect of nitrogen sources on all studied traits (except physiological grain nitrogen efficiency) was significant. The highest grain yield (1959.99 kg ha-1) and biomass yield (9782.43 kg ha-1) were obtained from NPK treatment with no significant difference with cow manure. Also, the most nitrogen efficiency indices were obtained from NPK treatment. However, no significant difference was observed between agronomic efficiency of grain and cow manure. The highest phosphorus content and biomass phosphorus content were obtained from NPK treatment. However, with the use of organic and chemical fertilizers, the efficiency of phosphorus use decreased. The effect of biofertilizers on most of the studied traits (except biomass P percent) was not significant. Interaction of nitrogen sources and biofertilizers was significant on most of the studied traits (except grain yield, agronomic efficiency of N and P). Based on the results of this experiment, considering the environmental effects and increasing the efficiency of nitrogen use for sustainable production of purslane seed in Birjand region can be used as fertilizer replacement (NPK).