The effect of different amounts of phosphorus and nitrogen on tuber yield and agronomic traits of potato

Subject Areas : Journal of plant ecophysiology

مجید زاهدی دهنوئی ¹ (PhD Student , Department of Agronomy, Jiroft Branch, Islamic Azad University, Jiroft, Iran)
حسن سرحدی ² (Assistant Professor, Department of Agronomy, Jiroft branch, Islamic Azad University, Jiroft, Iran)
مهدی ثباتی گاوگانی ³ (Assistant Professor, Department of Agricultural Mechanization, Jiroft Branch, Islamic Azad University, Jiroft, Iran)

Received: 2023-12-05 Accepted : 2023-12-05 Published : 2023-08-01

Keywords: nitrogen, Potatoes, phosphorus,

Abstract :

Potato is one of the most important crops in the world. This plant is in the third place after rice and wheat in terms of consumption in the world, for this reason this plant is considered as one of the plants that protect food security. Low soil fertility is the most important limitation for potato production. Farmers should deal with this problem by using mineral fertilizers that improve soil productivity. Using the right amount of NP fertilizer is the main factor in potato production. A field experiment was conducted in the main cropping season of 2022 and 2023 to investigate the optimal amount of NP on potato tuber yield in Jiroft region. The treatments including four levels of nitrogen (0, 46, 92, 138 kg/ha) and three levels of phosphorus (0, 46, 69 kg/ha) were factorially combined in a randomized complete block design with three replications. The results of the study showed that the use of 92 kg of nitrogen per hectare is recommended in Jiroft. Even if P application does not affect potato tuber yield, 23 kg/ha of P fertilizer should be applied to maintain soil fertility.