This has to be done within 30 days after bloom or the thinning will not be effective in reducing alternate bearing. When thinning to increase fruit size leave only one fruit in a cluster. The largest fruit will come from the king blossom or fruit. Leave this one for maximum fruit size. Space fruit 6-8 inches apart regardless of spur placement on a limb.
Seeds cause the fruit to develop properly.
If both the pollen and stigma are from the same flower or from another flower from the same variety, the process is called self-pollination. If the pollen has to come from a different variety for pollination to occur the process is called self-unfruitful . Therefore two varieties have to be planted for fruit set to occur. This is called cross-pollination . The following is a pollination guide for various fruit trees grown in Arizona.