2026-06-27http://hdl.handle.net/123456789/24742acrisolscostscrop yieldfarmyard manurenitrogen fertilizersnutrient balancephosphorus fertilizerspotassium chloridepotassium fertilizersrotationsintensive croppingsoil degradationsuperphosphatesureavietnamYield gaps and nutrient balances in intensive, rice-based cropping systems on degraded soils in the Red River Delta of VietnamJournal Article