Under Long Term Field Condition to Evaluate the Effects of Different Phosphorus Dosses on Agronomic Efficiency of Maize Plant
2021
Işik, Mehmet | Öztürk, Feyzullah | Karadere, Şeyma | Ortaş, İbrahim
Maize (Zea Mays L.) plant is one of the most produced cereals around the world. Phosphorus (P),which is one of the most used fertilizers in maize production. P is not a renewable resource and innext 50-100 years, it may be finish. Moreover, less P fertilization may limit crop yield and productioncapacity. The purpose of study is to investigate the effects of different P dosses on P uptake and its usageefficiency upon maize plant under long term P fertilizer filed experiment. Long-term field experimentwas established in 1998, since then regularly each year control (without fertilization), 5, 10 and 20 kgP2O5 da-1 P (as triple superphosphate) doses are applied as a basic fertilizers. P2088 maize genotype was used as plant material. Maize seeds were sown in June 2017 and were harvested in October2017. After harvest, yield, shoot and root dry weight were determined. P concentrations of each partswere determined by ICP-OES. Agronomic Efficiency (AE), Physiological Effciency (PE), AgrophysiologicalEffciency (APE), Apparent Recovery Effciency (ARE) and Utilization Effciency (EU) were calculated.According to the research findings; increasing doses of P applications increase different plant partsdry matter yield and P concentration. However, it is seen that P10 application is statistically the bestapplication on AE, FE, GKE and KE calculations. It was determined that under field condition applicationof P10 kg da-1 P2O5 dose was the optimum dose for maize production.
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