1Division of Crop Physiol. & Biochem., Central Potato Research Institute, Shimla, 171 001, (H.P.), India.
2The Biological Laboratories, Harvard University, Massachusetts, 002138, USA.
The effect of water stress at different stages of crop growth was evaluated. It was recorded that the water stress imposed at stolon initiation stage repress the yield by 30–65% and increases the percentage of small tubers by 9–25% whereas at other stages the effect was less pronounced. This reflects that stolon initiation stage is most critical in crop production under water stress.
