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  2. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    Lack of phosphorus may interfere with the normal opening of the plant leaf stomata, decreased stomatal conductance resulting in decreased photosynthesis and respiration rates [85] while decreased transpiration increases plant temperature. [86] Phosphorus is most available when soil pH is 6.5 in mineral soils and 5.5 in organic soils. [74]

  3. Plant nutrition - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrition

    Plants can increase phosphorus uptake by a mutualism with mycorrhiza. [6] On some soils, the phosphorus nutrition of some conifers, including the spruces, depends on the ability of mycorrhizae to take up, and make soil phosphorus available to the tree, hitherto unobtainable to the non-mycorrhizal root. Seedling white spruce, greenhouse-grown in ...

  4. Phosphorus deficiency - Wikipedia

    en.wikipedia.org/wiki/Phosphorus_deficiency

    If the concentration of phosphorus measured from the colorimeter test is significantly lower than the plant's optimal soil levels, then it is likely the plant is phosphorus deficient. [5] The soil testing with colorimetric analysis, while widely used, can be subject to diagnostic problems as a result of interference from other present compounds ...

  5. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    Because roots are damaged, nutrient uptake is reduced, and deficiencies of the macronutrients (nitrogen, phosphorus, potassium, calcium and magnesium) are frequently encountered in very strongly acidic to ultra-acidic soils (pH<5.0). [26] When aluminum levels increase in the soil, it decreases the pH levels.

  6. Leaching (agriculture) - Wikipedia

    en.wikipedia.org/wiki/Leaching_(agriculture)

    soil type and structure. For example, sandy soil holds little water while clay soils have high water-retention rates; the amount of water used by the plants/crops; how much nitrate is already present in the soil. [3] The level of nitrous oxide (N 2 O) in the Earth's atmosphere is increasing at a rate of 0.2 to 0.3% annually.

  7. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    Phosphorus and nitrogen fertilizers can affect soil, surface water, and groundwater due to the dispersion of minerals [47] into waterways due to high rainfall, [65] [66] snowmelt and can leaching into groundwater over time. [67] Agricultural run-off is a major contributor to the eutrophication of freshwater bodies.

  8. Rhizophagus irregularis - Wikipedia

    en.wikipedia.org/wiki/Rhizophagus_irregularis

    In numerous scientific studies R. irregularis has been shown to increase phosphorus uptake in multiple plants as well as improve soil aggregation due to hyphae. [17] Because of these qualities, R. irregularis is commonly found in mycorrhizal based fertilizers.

  9. Soil fertility - Wikipedia

    en.wikipedia.org/wiki/Soil_fertility

    Phosphorus is a primary factor of soil fertility as it is an element of plant nutrients in the soil. It is essential for cell division and plant development, especially in seedlings and young plants. [10] However, phosphorus is becoming increasingly harder to find and its reserves are starting to be depleted due to the excessive use as a ...