During apple orchard renewal, Apple Replant Disease (ARD) and soil degradation can lead to inconsistent infill vigor and uneven fruit production. Brassica seed meal is an effective organic amendment for suppressing ARD and improving soil fertility in new plantings, but it is expensive and not necessary for orchard areas that do not express ARD. We […]
Intercropped legumes can supply nitrogen to fruit trees and reduce the need for purchased nitrogen fertilizer, potentially reducing costs and environmental footprint. The project evaluated nitrogen isotope techniques (comparing the 15N and 14N signal from the legume N versus other sources) to monitor the degree of uptake by apple trees of legume N grown in […]