Introduction Fertilizer
Fertilizers are inorganic or organic material derived from organic or synthetic sources which are added to the soil as the basic nutritional intake for plant growth. Recent research found that about 40 to 60% yield is the contribution of the use of commercial fertilizers.
nutrition Primer
If not available in sufficient quantities in the soil for optimum growth and yields will require an annual application. Nitrogen (N) improve the quality and speed of growth of leaves. Phosphate (P) increases root growth. Potassium (K) increases energy, helps metabolism and strengthen.
Secondary nutrients
Calcium (Ca) is usually found in soil. Magnesium (Mg) improve health and growth. health and growth. Foliar application (via leaf) is required for better yields. Sulfur / sulfur (S) can help reduce the use of nitrogen and phosphate.
Micro nutrients
Natural health boost. Boron (B), Manganese (Mn), Molybdenum (Mo) and zinc (Zn). Zinc (Zn) is given at a dose of 12.5 kg / ha / year by way of foliar spray.
Deficiency symptoms / Shortage
N Color Pale and yellow, sluggish growth, shoots a little, tiny leaves. P2O5 Dull, small leaves, stems weak and sluggish growth. K2O Rod skinny pale, folded leaves and small, less resistant to drought or dry, thin branching. When Ca Mg pH below 4. When the pH below 4, also in the dry season is described by "interveinal chlorosis" as "v" upside down. S leaves the top of Trace Elements loss yellowing of colors, rolled leaf tips and stunted growth. Zn leaves forming a sickle. B New leaves furl.
Fertilizer Introduction
Fertilizer (or fertiliser) is any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a soil to supply one or more plant nutrients essential to the growth of plants. A recent assessment found that about 40 to 60% of crop yields are attributable to commercial fertilizer use. Primary Plant Nutrients May not be available in soil in sufficient quantities for optimum development and yield and hence annual application necessary. Nitrogen (N) promotes quantity and speed of leaf growth. Phosphate (P2O5) promotes root growth. Potash (K2O) promotes vigour, helps metabolism, imparts resistance. Secondary Plant Nutrients Calcium (Ca) usually available in soil. Magnesium (Mg) promotes health and growth. Foliar application in high yielding teas. Sulphur (S) getting depleted in tea soils, hence need for soil application in well drained teas. Micro-nutrients Promote normal health. Boron (B), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn) showpromise. Zinc to be used at the rate of 12.5 kg/ha/year as foliar spray. Deficiency symptoms N Pale or yellow colour , slow growth, fewer shoots, small leaves P2O5 Dull, small leaves, weak stem, slow development. K2O Thin white stem, folded small leaves, poor recovery from prune or drought, fair central growth with poor side branches. Ca When pH value below 4. Mg When pH value below 4, also in droughty condition depicted by interveinal chlorosis as inverted ‘V’. S Yellowing of upper leaves. Trace Elements Discoloured leaves, curly leaf edges and stunted growth. Zn Sickle shaped leaves. B Rosetting of new growth. Original Post
