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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 8, Special Issue 5 (2019)

Studies on varying potassium levels on early duration potato varieties

Author(s):

Manorama Behera, Santanu Das, Asok Saha and Deo Kumar

Abstract:
Potato (<em>Solanum tuberosum</em> L.) is the third most important food crop in the world after rice and wheat and is the fourth most important food crop in India after rice, wheat and maize. Potato crop prefers well-drained, light, deep, loose soil with high organic matter. A number of macro and micro plant nutrients are required for its growth and development. Potato requires substantial quantity of potassium to produce an optimum yield. However, potassium needs of the crop vary with the agro-climatic region, variety, crop sequence and soil type. Potato requires substantial quantity of potassium to produce an optimum yield. However, potassium needs of the crop vary with the agro-climatic region, variety, crop sequence and soil type. The experiment was laid out in split plot design having twelve treatments combinations in three replicates. Three different varieties (V<sub>1</sub>- Kufri Ashoka; V<sub>2</sub>–Kufri Pukhraj; V<sub>3</sub> – Kufri Khyati) were randomly allotted in each main plot, while four different levels of potassium (0, 75, 150 and 225 kg ha<sup>-1</sup>) were randomly allocated in sub plots. It was revealed from the results that the number of tubers per plant increased with the maturity of the crop in both the years of experimentation till harvest. Variety and potassium both played an important role in influencing total tuber yield. The highest tuber yield (22.36 t ha<sup>-1</sup> and 21.46 t ha<sup>-1</sup> during 2016-17and 2017-18 respectively) was achieved with the variety Kufri Pukhraj (V<sub>2</sub>). It was apparent that 150 kg K<sub>2</sub>O ha<sup>-1</sup>resulted significantly highest tuber yield (55.36%,85.32% over control during 2016-17 &amp; 2017-18 respectively) while the control plots produced the lowest yield of tubers. The response of yield to potassium application showed an increasing trend up to 150 kgK<sub>2</sub>O ha<sup>-1</sup>.It was revealed from the result that the highest Benefit :Cost (B:C) ratio (1.44 &amp; 1.73 during 2016-17 &amp; 2017-18 respectively) was achieved with the variety Kufri Pukhraj under 150 kg K<sub>2</sub>O ha<sup>-1</sup>.

Pages: 264-268  |  516 Views  46 Downloads

How to cite this article:
Manorama Behera, Santanu Das, Asok Saha and Deo Kumar. Studies on varying potassium levels on early duration potato varieties. J Pharmacogn Phytochem 2019;8(5S):264-268.