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Pak. J. Bot., 45(6): 2013-2018, 2013.

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INFLUENCE OF SOWING TIME AND POTATO PROPAGULES ON THE YIELD AND TUBER QUALITY

ABDUR RAB^1*, GHULAM NABI¹, NOOR UL AMIN¹, IHSANUL HAQ³, MUHAMMAD SAJID¹,  KHALID NAWAB⁴ AND NEELAM ARA¹

Abstract: The influence of sowing time and potato propagules on yield and quality of potato was carried out at Agricultural Research Institute, Tarnab, Peshawar during the year 2005-06. Potato tuberlets were developed from Hybrid TPS, OP-TPS and Tissue culture and evaluated against seed tubers for plant growth, yield and tuber quality. The tuberlets from hybrid TPS had significantly higher percent sprouting (92.767%), plant height (65.783 cm), soil cover (91.250 cm²), number of leaves per hill (35.67) and yield (39.126 ton ha^-1) with the minimum disease incidence (0.15%), followed by mini-tubers and OP-TPS. The seed tubers had significantly high disease incidence (23.17%) and lower yield (11.414 ton ha^-1) but had high tuber quality high TDS (6.242%), dry matter (23.176%) and specific gravity (1.393). Most of the parameters were none significantly affected by sowing on September 15^th or September 22^nd but plant height, soil cover, leaves per hill and yield declined with delaying sowing to October 8^th.
 

¹Department of Horticulture, KPK Agricultural University, Peshawar, Pakistan

²Hazara Agriculture Research Institute, Abbottabad, Pakistan

³Department of Agricultural Extension Education, KPK Agricultural University, Peshawar, Pakistan.

^*Corresponding author e-mail: abdurrubaup@gmail.com