Cover and Green Manure Crops for Northwest Nurseries

摘要: Green manure crops are planted in Northwest bareroot nurseries primarily to produce organic matter enrich soil. Available species include grasses, legumes, and brassicas. Legumes deep rooting, decompose quickly, can increase soil nitrogen by fixation but require good drainage well-fertilized soils soilborne pathogens. The most suitable for short-term rotations annual including small grains, certain spring-sown For longer rotations, tall fescue is well adapted varied conditions, birdsfoot trefoil, a legume, produces on acid soils. pros cons of other various rotation lengths discussed.