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2. Nitrogen deficiency - Wikipedia

   en.wikipedia.org/wiki/Nitrogen_deficiency

   Soil organisms use any nitrogen available to break down carbon sources, making nitrogen unavailable to plants. [1] This is known as "robbing" the soil of nitrogen. All vegetables apart from nitrogen fixing legumes are prone to this disorder. Nitrogen deficiency can be prevented by using grass mowings as a mulch or foliar feeding with manure.

3. What’s The Difference Between Potting Mix And Potting Soil? A ...

   www.aol.com/difference-between-potting-mix...

   “Potting mix contains no soil and is a lightweight mixture that’s ideal for growing plants in containers,” says Justin Hancock, horticulturalist with Costa Farms. “There are an infinite ...

4. John Innes compost - Wikipedia

   en.wikipedia.org/wiki/John_Innes_compost

   The potting mixes are used to grow different types of plants depending on their nutrient requirements. [1] All three potting mixes have the same soil component: 7 parts sterilised loam; 3 parts peat; 2 parts sharp sand [5] They each contain ground limestone, and varying quantities of the same base fertiliser mix: 2 parts hoof and horn; 2 parts ...

5. Potting soil - Wikipedia

   en.wikipedia.org/wiki/Potting_soil

   A soil test may be done to analyze the chemistry of a potting mix, despite the mix not necessarily being made of soil. As an approximation for indoor home planting, the mix is generally treated as greenhouse growth medium. The main method is a saturated media extract (SME), which tests the chemical contents of a water extract of the mix. [13] [15]

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

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

7. Carbon-to-nitrogen ratio - Wikipedia

   en.wikipedia.org/wiki/Carbon-to-nitrogen_ratio

   The C:N ratio of soil can be modified by the addition of materials such as compost, manure, and mulch. A feedstock with a near-optimal C:N ratio will be consumed quickly. Any excess C will cause the N originally in the soil to be consumed, competing with the plant for nutrients (immobilization) – at least temporarily until the microbes die.