Soil Fertility, and Fertilizers |
Contents
SOIL FERTILITYPAST AND PRESENT | 5 |
GROWTH AND THE FACTORS AFFECTING IT | 21 |
ELEMENTS REQUIRED IN PLANT NUTRITION | 71 |
Copyright | |
15 other sections not shown
Common terms and phrases
absorbed absorption acid soils acre added addition agricultural Agron alfalfa aluminum ammonia ammonium nitrate ammonium phosphate ammonium sulfate amount applied areas boron calcium carbon dioxide cations cent chemical chloride clay clover compounds concentration containing copper corn cost decrease deficiency dicalcium phosphate effect exchange factors farm fertilizer materials field fixation grower important increase ions iron leaching legumes lime limestone losses magnesium manganese manufacture manure method mineral mixed fertilizers molybdenum neutral nitrate nitrification nitrogen fertilizers organic matter oxide phos phosphate fertilizers phosphorus and potassium placement plant growth plant nutrients Plant Soil potash potassium chloride production quantities reaction residues salts samples seed shown in Figure sodium soil pH Soil Sci soil solution soil test Soils Fertilizers soluble soybeans SSSA Proc studies subsoil sulfuric acid superphosphate supply surface Table temperature tion uptake urea water-soluble yield zinc