Kekkeanswered grow question 4 years ago Phosphorus acts as a macronutrient in the cannabis plant. Because it is a mobile nutrient, the plants can direct the mineral to the areas where it is most needed. Phosphorus plays an essential role in photosynthesis as well as protein synthesis and is a crucial part of DNA. A lack of phosphorus can manifest itself in red / purple colored stems, brown spots on the leaves and dry leaves.
prevention
• Use soils with a high percentage of organic matter.
• Increase the absorption rate by using a well-ventilated floor.
• Use mycorrhizal fungi in your soil to improve phosphorus absorption. These microbes help convert insoluble phosphates into available molecules.
• Add more manure to your compost.
corrections
• Bring the pH in the higher end of the spectrum - your plant can more easily absorb the phosphorus.
• Add worm humus and fish meal to your soil.
• Apply an organic fertilizer that is high in phosphate.
• There is a risk that you will overwater. So only water when the top 3cm of the soil is dry to avoid the medium getting too wet.
• Move your plant to a warmer place or install a tarpaulin to store more heat. At temperatures below 15 ° it is more difficult for the plants to absorb phosphorus.