In order to have a fruitful apple harvest you have to prune the trees carefully.
Pruning the leaves on apple trees is an essential part of ensuring a good harvest.
「葉の手入れ（剪定）」は prune が使えます。
1) In order to have a fruitful apple harvest you have to prune the trees carefully.
「実り多いりんごの収穫のためには入念に剪定しなければいけない。」
2) Pruning the leaves on apple trees is an essential part of ensuring a good harvest.
「りんごの木の葉の手入れは豊作のために欠かせません。」
ご参考になれば幸いです！
日本 
