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Articles general
- Fertilizer - "Fertilizers typically provide, in varying proportions: Six macronutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S); Six micronutrients: boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), and zinc (Zn)... [and three other macronutrients]: carbon, hydrogen, and oxygen. These nutrients are supplied by water and carbon dioxide." - Wikipedia
- Organic fertilizer - "Naturally-occurring organic fertilizers include manure, slurry, worm castings, peat, seaweed, humic acid, and guano... Processed organic fertilizers include compost, bloodmeal, bone meal, humic acid, amino acids, and seaweed extracts. Other examples are natural enzyme digested proteins, fish meal, and feather meal. Decomposing crop residue (green manure) from prior years is another source of fertility." - Wikipedia
- 12 Organic Fertilizers & Natural Bug Repellants - such as manure, nettle tea etc.
- Chicken litter provides organic alternative to synthetic fertilizers - "Recent movements aimed at managing environmental impacts of agriculture have spurred interest in the development and use of organic and natural fertilizers for commercial applications." - physorg.com - March 3, 2011
- Choosing a Soil Amendment - "Soil amendments improve the physical properties of soils. Amendments are mixed into the soil. Mulches are placed on the soil surface. The best soil amendments increase water- and nutrient-holding capacity and improve aeration and water infiltration." - Colorado State University
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