Poor growth and susceptibility to insects, disease and climate extremes are often linked to soil conditions
One reason vegetables fail to set fruit is related to an oversupply of nitrogen fertilizer Vegetables are consumers of nutrients more so than perennials and woody ornamentals, therefore we are more concerned about a timely application of fertilizers to maintain good plant growth and development as well as fruit production. The timing and how much fertilizer to apply is important. These two things depend upon the growth stage of the plant. When too much is applied, especially in the case of nitrogen, this can be inhibitory to flowering and fruit set. An oversupply of nitrogen fertilizers tends to promote vegetative growth at the expense of flower formation. If your plants are growing exceptionally well but you experience little yield in produce, nitrogen supply is commonly the answer. Reduce the application of fertilizer or switch to an organic form that will supply nutrients over a longer period.