We examined the following equation in lectures: Yield (Y)=Transpiration (T) x water use efficiency (W) x harvest index (HI). Discuss how the following factors may potentially impact yield: a. Unfavourable distribution of rainfall during the growing season b. Water deficit at the time of flowering (timing of water availability) c. Weeds and poor nutrition d. Root and/or shoot disease In your answer, explain ways in which yield could be increased by improving the water use efficiency component of the above equation. ANSWER