Research Article

Under Long-Term Condition, Role of Increasing Doses Phosphorus Application on Soybean (Glycine max L.) Some Nutrient Uptake and Yield 

Mehmet Elaldı, Feyzullah Öztürk^*, Mehmet Işık and Ibrahim Ortaş

Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çukurova University, Türkiye
*Corresponding author e-mail: ozturk2421@gmail.com

(Received: 15/08/2024; Revised: 30/10/2024; Accepted: 25/11/2024; Published: 10/12/2024)

ABSTRACT

Soybeans, as an industrial plant, are used in many industries. Since soybeans fix nitrogen through the rhizobium bacteria, P fertilization is one of the biggest requested fertilizers in their production. In this context, under long-term experimental conditions, the aim is to investigate the effect of increasing doses of P application on soybean yield and nutrient uptake. The hypothesis is that optimum P fertilizer doses increase soybean yield and P uptake.  

A field experiment was established in 1998 on the soil Arık soil series. Four doses of P fertilizers were applied, such as 0, 50, 100, and 200 kg P₂O₅ ha^-1 with three replications before each cultivation term. Arısoy soybean (Glycine max L.) species seeds were sown in May 2024 and harvested in November 2024. At harvest, root, shoot dry weights, and yield were determined. Plant mineral nutrients (K, P and Zn) concentrations were analyzed by ICP-OES. ANOVA statistical analysis was realized by the JMP 8-pack program, and the less significant difference (LSD) test was carried out. Research results have shown that there is no significant difference in root dry matter and yield, but there is a significant difference in shoot dry matter yield. Especially when soybean grain yield was examined yield increased due to increasing doses from P0 to P200 (1596, 2390, 2431 and 2512 kg ha^-1) fertilization, respectively. Furthermore, increasing doses of P fertilization statistically increased grain P concentration in a linear manner. Overall, for soybeans, 100 kg P₂O₅ ha^-1 phosphorus fertilization is given an optimum dose for optimum growth. It was determined that the 100 kg P₂O₅ ha^-1 application is the optimum application in soybean cultivation growth and nutrient uptake under long-term field experiments.

Keywords: Long-term phosphorus, Soybean, Yield and Nutrient uptake