Although a number of techniques [such as optimizing the
location and management of the trees, avoid excessive shading,
performing the controlled crosses in high (on) bearing years,
girdling after initial fruit set, selecting highly producing cultivars as
female parents, selecting an appropriate male parent or reducing
competition between vegetative and reproductive growth] have
been proposed to increase fruit set after hand pollination in avocado
(reviewed in Lahav and Lavi, 2013), an evaluation of the main factors
affecting pollen quality and fruit set in controlled pollinations
is still needed.