Soil amendment

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Soil conditioners (materials that make the soil more suitable for the growth of plants with a carbon/nitrogen ratio greater than 30) or fertilizers (materials that supply essential elements to improve productivity of plants with a carbon/nitrogen ratio of less than 20). These materials may be made of lime, gypsum, sulphur, compost, woodwaste, peat, manure, fertilizers or nonagricultural waste.


James Peth

James Peth

James Peth, MS, MPH, PhD is an Assistant Prof. in Food Science and Human Nutrition at Colorado State University in Fort Collins, Colorado.