Journal of Food, Agriculture and Environment

Effect of different potassium nitrate levels on yield and quality of potato tubers


Moawiya Haddad 1, Nabeel M. Bani-Hani 2, Jalal A. Al-Tabbal 3, Ahmad H. Al-Fraihat 4*

Recieved Date: 2015-09-18, Accepted Date: 2015-12-30


Field experiments were conducted to assess the effect of rates of potassium nitrate fertilizer on potato yield and quality in Jordan valley, Jordan, during season 2012–2013. Potato was grown under drip irrigation methods and four potassium nitrate fertilizer doses were applied at 0, 130, 260 and 380 kg ha-1. A significant increase in fresh tuber yield per plant, tuber weight, and tuber yield ha-1 with potassium nitrate application at all rate of potassium nitrate was recorded and the highest tuber yield was registered for 380 kg ha-1. Potassium nitrate treatments not only increased the yield and yield components (except tuber number per plant) but also affected the quality parameter of potato tubers (specific gravity, ash, ascorbic acid, protein, carbohydrate and fat), positively. Water use efficiency increased from 3.43 to 4.33 kg m-3 using the above mentioned rate of potassium nitrate fertilizer.


Potato, salinity, potassium nitrate, yield, water use efficiency, quality

Journal: Journal of Food, Agriculture and Environment
Year: 2016
Volume: 14
Issue: 1
Category: Agriculture
Pages: 101-107

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