片手で扱うものは hand pruners
などとも。また、フランス語から来た
secateurs
(sec切る+ateurもの)
を使う人もいます。

prunersはペア名詞なので厳密にはprunersですが、a pole pruner（高枝ばさみ）は、剪定機という感じで単数で用いられているようです。

I picked persimmons off the lower branches by cutting the stems with pruning shears/secateurs/hand pruners.
剪定ばさみで下の方の枝の柿を取りました。

Then I trimmed the stem into a T-shape.
へたのところの枝をT字型に切ります。

The T-shaped stem structure is important when they are put on a twisted two-strand nylon string.
You don’t need to tie the stem with such a string because you can put the T-shaped stem into the twist of the two strands.

In this way you can put the persimmons at roughly ten centimeter intervals.

I cut off the higher branches with pruning shears with longer handles.

To pick persimmons or cut off branches in much higher places, I used a long pole pruner, about two meters long. The pruner can be operated with a cable outside the pole. You can cut considerably thick branches with it. The severed branches don’t fall because it can keep holding them until you get them safely on the ground. Therefore, the fruits don’t get bruised.