Q.Apple Tree Location
my apple tree is planted very close to a chestnut tree, about a meter away, the apples are very dry and bitter, is this because of the chestnut tree

Certified GKH Gardening Expert
Yes, planting an apple tree just a meter from a chestnut tree can cause problems. Chestnuts have aggressive roots that compete for water and nutrients, which can leave the apple tree stressed and result in dry, bitter fruit. If possible, consider transplanting the apple tree to a sunnier, less crowded spot with better root space. If moving it isn’t an option, try deep watering and mulching regularly to help reduce stress and improve fruit quality.
This collection of articles will offer plenty of information on apples: