Foliar Spray: When, What, When & How do You Apply It?

Spray leaves with nutrients? Isn't that what soil, fertilizer, and hydroponic nutrient solutions are for?

Foliar Spray offers a method for rapid nutrient delivery.  It can be used as part of a nutrient regiment but is particularly beneficial in treating specific nutrient deficiencies and for reviving stressed or diseased plants.  

 

If you haven't already, check out the last post - 


SCENARIOS 

when a plant is suffering from certain nutrient deficiencies. 

Stomata are the pores on leaves that allow plants to “breathe.”  When the stomata opens, water loss occurs.  This is called transpiration.

In systems without soil, such as hydroponics, nutrient interactions can occur within the root zone that makes it difficult for plants to absorb certain minerals due to binding and antagonism between the nutrients. Iron deficiency occurs in many of these crops when they are stressed by low temperatures. Therefore, hydroponics have a special need for foliar feeding. [1]


WHAT TO USE

In general, use diluted formulas.

Apply until droplets cover the leaves.  The best time to apply is when it is dark: in the early morning before the sun is strong or before you turn lighting on.

When the stomata opens, water loss occurs.  This is called transpiration.

Gardin carries solutions specificly designed for foliar spray, including Dyna-Gro's 


HOW TO USE IT

Apply until droplets cover the leaves.  The best time to apply is when it is dark: in the early morning before the sun is strong or before you turn lighting on.


Resources:

  1. http://blog.nutri-tech.com.au/top-10-most-frequently-asked-foliar-fertilising-questions/

  2. http://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/what-is-foliar-spray.htm

  3. 4hydroponics.com video - https://www.youtube.com/watch?v=5281F_UgDtY

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