Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2002.128.134HassanA. A. SarkarA. A. AliM. H. KarimN. N. 2200252Field experiments were conducted with potato in a silt-loam soil
of the Bangladesh Institute of Nuclear Agriculture sub-station farm,
Rangpur, Bangladesh during the winter season (November-March) of 1993-94
and 1994-95 to study its yield response due to deficit irrigation imposed
at different growth stages. Nine different irrigation treatments were
followed with the combinations of four different growth stages (i.e.
stolonization, tuberization, bulking and tuber enlargement) allowing
water stress at single to all stages. Irrigation showed significant
effect on the yield of potato in 1993-94. But there was no significant
yield difference due to different levels of watering and stresses of
potato during 1994-95. Highest potato yields of 21.0 t/ha and 25.97
t/ha were obtained in 1993-94 and 1994-1995 by applying a total of 7.38
cm and 7.06 cm irrigation water, respectively, at stolonization, tuberization
and bulking stages. It was also found that water stress at the early
two stages (I. e. stolonization and tuberization) showed sharp negative
response to the yield of potato compared with bulking and tuber enlargement
stages. Thus, the experimental results revealed that irrigation at tuber
enlargement stage could be withheld without significant yield decrease
in potato.]]>BBS, 19951995Cooper, P.J.M. and P.J. Gregory, 198735762Corbeels, M., G. Hofman and O.V. Cleemput,199838147167Doorenbos, J. and W.O. Pruitt,1977English, M.,1990116399412English, M. and B. Nakamura,1989115172184English, M.J. and S.N. Raja,199632114Islam, T., H. Sarker, J. Alam and H. Rashid, 199018173179Khan, M.S., S. Karim, K.E. Short and Z. Karim,19811981pp: 4753Karim, Z., M.S. Khan, A.J.S. Karim and M. Rahman, 1981-821981-82Karim, Z., M.S. Khan and N.A. Akand,19821982pp: 1996Li, J., 199838135146Michael, A.M.,1997Steiweek, O., 19588185186Van, den Boogaard, R., E.J. Veneklaas, J.M. Peacock and H. Lambers, 1996Triticum aestivum L.) in a Mediterranean environment: Cultivar differences and sowing density effects. ]]>181251262Yaron, D., E. Bresler,19832223255Yule D.F.,19841984pp: 136-140pp: 136-140