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  2. Nitrogen deficiency - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_deficiency

    A young cabbage plant exhibiting nitrogen deficiency. Nitrogen deficiency is a deficiency of nitrogen in plants. This can occur when organic matter with high carbon content, such as sawdust, is added to soil. [1] Soil organisms use any nitrogen available to break down carbon sources, making nitrogen unavailable to plants. [1]

  3. List of companion plants - Wikipedia

    en.wikipedia.org/wiki/List_of_companion_plants

    Tomato, [6] [28] [58] [75] peppers, oregano, asparagus, petunias, grapes, Carrots, Radishes: Chamomile, anise: Slugs and snails. [39] butterflies: asparagus beetle, hornworms, [6] mosquitoes, [6] thrips and flies [6] Common rue, thyme: Is said to make tomatoes taste better, chamomile and anise are supposed to increase the essential oils in many ...

  4. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    Nitrogen is the most critical element obtained by plants from the soil, to the exception of moist tropical forests where phosphorus is the limiting soil nutrient, [36] and nitrogen deficiency often limits plant growth. [37] Plants can use nitrogen as either the ammonium cation (NH 4 +) or the anion nitrate (NO 3 −).

  5. Beneficial weed - Wikipedia

    en.wikipedia.org/wiki/Beneficial_weed

    White clover is included in some grass seed mixes, because it is a legume that fixes soil nitrogen with help of mycorrhiza. A beneficial weed can be an invasive plant that has some companion plant effect which is edible, contributes to soil health, adds ornamental value, [1] [2] and as well as beneficial also.

  6. Seaweed fertiliser - Wikipedia

    en.wikipedia.org/wiki/Seaweed_fertiliser

    Foliar applications of seaweed fertilizer extract have been shown to improve the uptake of nitrogen, phosphorus, potassium, and sulfur in soybeans such as Glycine max. [59] Research has also demonstrated that brown algae seaweed extracts can improve tomato plant growth, overall crop yield, and resistance to environmental stressors. [60]

  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 ...