M.A. Awal
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
S.K. Das
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
M. Dhar
Agricultural Research Station, Pahartali, Chittagong, Bangladesh
Potato varieties, Tuber bulking, Tuber yield
Field Laboratory of the Agricultural Research Station, Pahartali, Chittagong, Bangladesh
Variety and Species
The experiment comprised twenty three potato varieties viz., Almera, Ampera, Asterix, Aziza, Courage, Dheera, Diamant, Eldena, Espirit, Felsine, Granola, Innovator, Ladyolympic, Ladyrosetta, Laura, Marbel, Markies, Melody, Processor, Provento, Quiney, Remarka and Terragold which were laid out in a Randomised Complete Block Design (RCBD) with three replicates. The seed tubers were collected from Tuber Crop Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur. The soil/crop was fertilized with cow dung (15 t ha–1), urea (350 kg ha–1), triple super phosphate (225 kg ha–1), muriate of potash (260 kg ha–1), gypsum (125 kg ha–1) and zinc sulphate (25 kg ha–1) (Rashid, 1993). Cow dung was applied during final land preparation. Half amount of the urea and entire amount of the other fertilizers were applied in soil during final land preparation as basal doze. The remaining amount of urea was applied in two equal installments at 30 and 50 days after planting (DAP) as side dressing. Well sprouted healthy seed tubers were planted on 25 November 2005 in a unit plot size of 3×3 m. The whole seed tubers were planted at a depth of 5-8 cm maintaining 60 cm for row to row distance and 25 cm for plant to plant within a row. The earthing-up was done during the planting of seed tuber, and at 30 and 50 DAP just after side dressing of urea installments. Plant protection measures, weeding, irrigation and other cultural operations were done as and when required to optimize the growth and development of the crop. Data were collected on the emergence percentage of seed tubers at 20 DAP, plant height (distance from the soil surface up to the top of uppermost leaf, Deblonde and Ledent, 2001) at 50, 60 and 70 DAP, number of sprout per hill at 50 DAP, percentage of canopy foliage coverage through eye estimation as area covered by the green haulms at 60 DAP, number and weight of tuber per hill at 60, 70 and 80 DAP, and individual tuber weight and fresh tuber yield at physiological maturity. The collected data were statistically analysed and the ANOVA was performed with F-test and the treatment means were evaluated by the Duncan’s Multiple Range Test.
J. Agrofor. Environ. 1(2): 15-19, 2007; ISSN 1995-6983
Journal