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pH Fluctuations
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Managing pH levels is vital for the healthy growth of cannabis plants, as it enables the roots to effectively absorb essential nutrients. Fluctuations in pH around the root zone can lead to stress in the plant, manifesting as the appearance of brown spots on the leaves. While this issue is more commonly observed in hydroponic setups due to pH fluctuations, it can also occur in soil-based cultivation. The occurrence of these spots is often associated with pH levels swinging too high or low.
Cause of Issue
◉ Imbalance in pH levels around the cannabis plant's roots
◉ pH fluctuations, which are more common in hydroponic setups but can also occur in soil-based cultivation
◉ Root problems or root rot can also result in similar symptoms
Symptoms
◉ Appearance of tan or brown spots on cannabis leaves, particularly on the middle or lower parts of the plant.
◉ Spots exhibit a unique pattern associated with pH fluctuations.
◉ Spots may be more commonly observed in hydroponic systems but can also occur in soil-based cultivation.
Corrective Actions
◉ Learn how to manage and stabilize pH levels effectively.
◉ Conduct regular pH testing of the nutrient solution or soil to ensure it remains within the optimal range for cannabis cultivation.
◉ Adjust pH levels using appropriate pH-up or pH-down solutions to bring them back to the desired range.
◉ Provide proper drainage and aeration to prevent root problems or root rot, which can also lead to similar symptoms.
◉ It's important to note that affected leaves may not recover once the issue is resolved. However, by addressing the underlying pH problem, you can prevent the spread of spotting to other leaves and promote healthier growth in your cannabis plants.
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