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  2. Nitrogen, phosphorus and potassium are the key garden ... - AOL

    www.aol.com/news/nitrogen-phosphorus-potassium...

    Organic sources can also be slow and unpredictable, so patience is critical.

  3. Green manure - Wikipedia

    en.wikipedia.org/wiki/Green_manure

    The ratio of carbon to nitrogen in a plant is a crucial factor to consider, since it will impact the nutrient content of the soil and may starve a crop of nitrogen, if the incorrect plants are used to make green manure. The ratio of carbon to nitrogen will differ from species to species, and depending upon the age of the plant.

  4. Easily Grow Your Own Garlic With This Fall Planting Guide - AOL

    www.aol.com/easily-grow-own-garlic-fall...

    Add them to any dish for a mild garlic flavor. Garlic bulbs are ready to harvest when one half to three-quarters of the leaves turn yellow. Lift the entire plant from the soil by hand or use a ...

  5. Compost - Wikipedia

    en.wikipedia.org/wiki/Compost

    Nitrogen is needed to grow and reproduce more organisms to oxidize the carbon. [3] High nitrogen materials tend to be green [1] and wet. [3] They can also include colourful fruits and vegetables. [1] Oxygen is required for oxidizing the carbon, the decomposition process. [3]

  6. Crop rotation - Wikipedia

    en.wikipedia.org/wiki/Crop_rotation

    Both nitrogen-fixing legumes and nutrient scavengers, like grasses, can be used as green manure. [12] Green manure of legumes is an excellent source of nitrogen, especially for organic systems, however, legume biomass does not contribute to lasting soil organic matter like grasses do. [12]

  7. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    Although nitrogen makes up most of the atmosphere, it is in a form that is unavailable to plants. Nitrogen is the most important fertilizer since nitrogen is present in proteins (amide bonds between amino acids), DNA (puric and pyrimidic bases), and other components (e.g., tetrapyrrolic heme in chlorophyll). To be nutritious to plants, nitrogen ...