01 Dec How to Spot Nitrogen Deficiencies and Correct Them
Nutrient deficiencies can occur any time during the growth cycle of the cannabis plant. If you recognize the symptoms early, you generally can reverse the deficiency. The most common deficiency that occurs in cannabis is a nitrogen deficiency. Nitrogen is the first number found on all fertilizer packages. Nitrogen is very important in the production of chlorophyll and amino acids, which are essential for photosynthesis. Nitrogen travels throughout the plant and will go to the new grow as needed. As the nitrogen travel up to the new growth you will start noticing yellowing and dying tips on the leaves lower on the plant if you do not have enough of this nutrient in the soil. Other symptoms include smaller leaves and slow growth. If you do not have enough nitrogen, especially during the vegetative stage, your plant production is greatly reduced. To correct the deficiency, using any water-based nitrogen, which is quickly available to the roots, will start correcting this problem. Most vegetative liquid fertilizers are higher in the nitrogen and can be added even during flower. You also can add organic products such as worm castings, bat or seabird guano, fish fertilizer, manures or alfalfa meal. These produces take a little longer to to get to the root of the problem but will correct the deficiency for a longer period of time. Calcium nitrate is water soluble and acts quickly. It is often one of the ingredients in CalMag and can be applied not only into the soil, but also as a foliar spray. Correcting this deficiency early on can make a huge difference in your final results. I am including several pictures of how this deficiency presents..