EFFECT OF ACIDITY ON GROWTH AND NUTRIENT COMPOSITION OF THE HIGHBUSH BLUEBERRY

摘要: Two highbush blueberry cultivars (Blueray and seedling selection 50-6-9) were grown at various pH levels in water cultures. Within the range 3.5 to 6.0, growth of Blueray did not appear be limited because direct effects pH. At 2.5, however, was nonexistent 3.0 it restricted. Growth 50-6-9 significantly greater 4.0 5.0 than or 6.0. Plant roots became progressively darker with increasing above 4.5. In general, root nutrient levels, Ca excepted, higher foliar although Mg very different except 3.0. Root Mn 6.0 10 20 times 4.0.