Too Much/Too Little Irrigation
Explain how an error on the low side of irrigation would affect the soil fertility - IPM efforts?
Too little irrigation will stress the plant and possibly cause issues with IPM. A plant stressed for any reason is more susceptible to pests and disease. Soil fertility should not be affected by too little irrigation. If the plant is stressed by lack of water, it will not be able to use feertilizer correctly. If the plant is wilted, fertilizer could burn root tips.