Thanks for your post Navneet. We will be covering these in the course. Feel free to bring along some photos of the leaf flush damage you have seen and we can do our best to ID the culprit!
There are various opinions on when to start these practices with most starting after 12-18 months after planting. I have heard the opinion that one should wait two flushes before pruning to ensure the root system is well established before pruning commences