Why do I need to fertilize my Cucumber?

Naturally every type of plant requires nutrients to grow properly, but when we grow Cucumber for its fruit, the harvest will be best if the soil is supplemented to provide more of what plants need. Each of the main macronutrients provides something different to plants. Phosphorus is the key nutrient that promotes the formation of flowers and fruit. Of course, a plant cannot produce flowers and fruit without a proper root system and healthy leaves to absorb sunlight, so the nutrients that support those parts of the plant are also necessary. Without enough of the necessary macronutrients, plants lack vitality, grow more slowly, and may wilt. Plants have to devote a lot of energy to flowering and fruiting, so if they are lacking in these main components that support their processes the resulting fruits will show that deficiency as well.