Effect of soil amendments and sawdust mulching on growth, yield and leaf nutrient content of highbush blueberry plants

摘要: Abstract The effects of soil amendments (elemental S, peat, crushed pine bark or plus elemental S) mixed into the planting hole, with without a sawdust mulch over surface, on early growth and yield highbush blueberry bushes (Vaccinium corymbosum L., ‘Bluecrop’) grown in mineral were investigated 3-year field study. Plant yields increased by additions all generally followed order: S > = peat control. reasons for positive responses probably differed among treatments. In control treatments, appeared to be limited Mn possibly Fe deficiency. For treatment, decrease pH concomitant increase levels stimulated response. However, concentrations both leaf Al very high toxicities these elements may have been limiting further amendment, response was related an improvement physical conditions. is likely pricipally improved conditions also reasonably content itself. additional effect reduced provided even greater than that alone. It concluded organic matter acidifying agent hole can greatly blueberries soil.