Chef and mango trees

Chef has garden full of mango trees, the only source of its income. Now a days, the chef's mangoes aren't doing well in the market. Due to which the chef income is decreasing rapidly. The chef wants to find out the problem with mangoes. He asked his friend for the same. His friend suggest him to check for insects,etc in the garden. Luckily chef came to know that the branches of some trees are unde