The effect of one plant on another plant in the soil. The effects are introduced by biologically active chemicals from a living plant or from the decomposing residues of a plant. A material used to alter the chemical or physical properties of a soil and to make the soil more productive. Soil amendments generally are materials other than fertilizers and include substances such as limestone, gypsum, and peatmoss. The biological process by which ammonium is released from nitrogen-containing organic matter.
Ammonification is nitrogen mineralization.
Without molecular oxygen or living in the absence of air. A negatively charged ion. Application of fertilizer in a concentrated linear zone in the soil, commonly along side the rows of crops. Contrast with broadcasting, which is wide zone application of fertilizer commonly across the surface of the soil or placed or tilled into the soil in an area or zone between rows of crops. Straw, woodchips, sawdust, paper, or other carbonaceous organic matter added to barn floors to absorb liquids from animal excrement and urine.