Author/Authors :
HAYAT KHAN, ZAFAR NWFP Agricultural University - Department of Agronomy, Pakistan , KHALIL, SHAD KHAN NWFP Agricultural University - Department of Agronomy, Pakistan , NIGAR, SHAHEEN NWFP Agricultural University - Institute of Development Studies, Pakistan , KHALIL, IFTIKHAR H. NWFP Agricultural University - Department of Plant Breeding Genetics, Pakistan , HAQ, IKRAMUL NWFP Agricultural University - Department of Agricultural Extension Education Communication, Pakistan , AHMAD, IFTIKHAR NWFP Agricultural University - Department of Agricultural Extension Education Communication, Pakistan , ALI, ASAD NWFP Agricultural University - Department of Plant Pathology, Pakistan , KHAN, M. YASIR NWFP Agricultural University - Department of Plant Breeding Genetics, Pakistan
Abstract :
This study was conducted to determine the production potential and optimum sowing date for various landraces of sweet corn. The research was carried out at New Developmental Farm, NWFP Agricultural University Peshawar, Pakistan during 2007 crop season. Sowing dates were 25 April (D1), 25 May (D2), 16 June (D3), 26 July (D4) and 18 August (D5). Sweet corn landraces Mingora, Mansehra, Swabi, Parachinar and cv. Azam were used. All parameters were significantly affected by sowing dates, landraces and their interaction. Days to 50 % tasseling and 50 % silking decreased as the date of sowing was delayed from D1 to D5. Days to maturity decreased as the date of sowing was delayed from D1 to D3 and then increased again as sowing was delayed from D3 to D5. Sweet corn landrace Swabi produced maximum (17292 kg ha-1) biological yield from D1 sowing compared to minimum (7083 kg ha-1) produced by Parachinar on D5. Azam produced maximum grain yield (4097 kg ha-1) and harvest index (27.21 %) when sown on D4, where as minimum grain yield (621 kg ha-1) and harvest index (7.16 %) was observed for Parachinar and Mingora respectively on D5 sowing.
Keywords :
Phenology , Yield , Landraces , Sweet Corn
