Search Results       Your search for [subject]Crops affect soil fertility returned 1 record.           The soil around us. by Barrera, Alfredo; Manila, Philippines: Bureau of Soils, 1960. Subject: Kind of soils; Soil structure; Soil texture; Characteristics of soils; Micro-organisms in soil; Organic matter; Soil moisture; Kind of soil formation; Soil fertility and fertilizer; Soil acidity and liming; Soil classification; Soil erosion and its maladies; Soil depletion; Kinds of soil erosion; Control of soil erosion; Soil conservation; Crops affect soil fertility; Ideal soil; Land capability; Conservation surveys.          Add to Book Cart Relevance: 30.82%