Nectarine Tree Loosing Fruit.
Nectarine tree land other type of fruit trees loosing fruit is often due to a lack or potash and/or Magnesium in the soil.A good general feed of a plant food such as growmore fertilizer at the start of the season plus a liquid tomato feed with the addition of a tea spoon of epsom salts in a gallon of water watered onto the roots with solve this problem.
The second cause of dropping fruit after the setting stage is often that the lack of available soil water especially on clay soils which can dry up quickly in the spring.The solution to this is to dig in some organic mater or mulch around the plant with some organic matter. On most soil types the ideal product for this solution will be spend mushroom compost.