Soil Fertility and FertilizersIntroduction: Fertilizers in a changing world; Soil fertility: past and present; Growth and the factors affecting it; Elements required in plant nutrition; Basic soil-plant relationships; Soil and fertilizer nitrogen; Soil and fertilizer phosphorus; Soil and fertilizer potassium, magnesium, calcium and sodium; Sulfur and microelements in soils and fertilizers; Manufacture of nitrogen, phosphorius and potassium fertilizers; The manufacture and properties of mixed fertilizers; Liming; Soil fertility evaluation; Fundamentals of fertilizer application; Cropping systems and soil management; Economics and efficient use of water; Attacking soil fertility problems. |
Contents
SOIL FERTILITYPAST AND PRESENT | 5 |
GROWTH AND THE FACTORS AFFECTING IT | 21 |
ELEMENTS REQUIRED IN PLANT NUTRITION | 66 |
Copyright | |
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absorbed absorption acid soils acre added adequate agricultural Agron alfalfa aluminum ammonia ammonium ammonium phosphate ammonium sulfate amount applied areas boron calcium carbon dioxide cations cent chemical chloride clay compounds concentration containing copper corn cost decrease deficiency dicalcium phosphate effect elemental sulfur exchange factors farm fertilizer materials field fixation grower important increase ions iron K₂O leaching legumes lime limestone loam losses magnesium manganese manure method micronutrients mineral mixed fertilizers molybdenum neutral NH4+ nitrate nitrification organic matter oxide phos phosphate fertilizers phosphorus placement plant growth plant nutrients plant roots Potash potassium chloride production quantities reaction residues salts samples sium sodium soil fertility soil moisture soil pH Soil Sci soil solution soil test soluble soybeans SSSA Proc subsoil sulfate sulfuric acid superphosphate supply surface Table temperature tion trogen uptake urea water-soluble yield zinc