A-study-of-copper-nutritional-effects-on-apple-quality
高品质苹果的均衡营养管理方法SQM2019
SEASONALITY OF NUTRIENTS IN LEAVES AND FRUITS OF APPLE TREES
The effect of zeolite, organic and inorganic fertilizers on soil chemical properties, growth and biomass yield of apple trees
COMPOSITION OF FOODS食物养分组成（下载后查看更清晰一些）
Effect of different calcium compounds on postharvest quality of apples
apple-maturity-chart
The commercial apple industry worldwide is in the midst of a major change in fruit production management systems. With size-controlling rootstocks tree size has been reduced and the number of trees per acre, referred to as tree density, has increased significantly. Some orchards in Europe have exceeded 5,000 trees per acre.
Jim Kamas, Monte Nesbitt& Larry Stein Extension Fruit Specialists, Texas AgriLife Extension
HARVEST DATES FOR APPLES IN CENTRAL WASHINGTON
