There are many reasons foliar fertilizers are better than basic soil fertilizers, for example in case of soil deficiency in nutrients due to their total absence or trace elements being bound because of unfavorable soil conditions.(Alexander pg. 5). Stress situations during growing stages can be effectively overcome with foliar fertilization. Th

If a period that the plant has difficulty absorbing nutrients by the leaves coincides with a period the plant has a high demand for nutrients, there will be significant loss to yield. The farmer will not be unable to notice this before it's too late. In the next tables' recommendations for optimum timing of foliar nutrient sprays for specific crops these are drawn from Alexander's book. The recommended timing of foliar sprays generally reflects the growth stages of the single crops where the demand for specific nutrients is crucial.

In conclusion foliar fertilizers can be a great benefit to increasing yield to crops, but they must be applied at the correct time. Every plant has a different growth stage that foliar fertilization is most beneficial. As well as the time of plant many environmental conditions must also be perfect also for maximum efficiency. Knowing these facts about the yield increasing effects of foliar fertilization we can say there is no doubt it has a definite place in agriculture and horticulture and we will probably see its use more in the future.

is is an important factor because stress influences growth, and also overall yield of our crops. Foliar fertilization is more economic than root fertilization due to the higher degree of applied nutrients used and taken up by the leaf. This usually is approximately 85% compared to a mere 10%, 30% max and in exceptional cases' 50% by the roots.(Fergoni,M pg231-233) This of course makes the nutrients more available to the plants. It seems strange that even though there are all these advantages foliar fertilization it is still met with skepticism. There are many reasons for this though. In these days nobody doubts that foliar fertilizers are capable of quickly and cheaply overcoming deficiency symptoms. Many specialists however admit the yield guaranteeing effect of foliar fertilization, but argue its increase on actual yield on not particularly deficient soils is still often contested.(Alexander pg. 6) This skepticism also results out of very different foliar fertilizers affects which are a result of foliar fertilizers general directions for use. Foliar fertilizers often require a special application according to local particularities such as cultivated variety, climate, location, stage of plant growth, the timing of application, and many other circumstances.

Foliar Fertilization Developments in Plant and Soil Sciences

2. If these structures serve to excrete aqueous solutions from the leaf, as has been demonstrated,

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