Avocado Tree Arrangement and Thinning in Relation to Cross- Pollination

It has now been definitely shown that California avocado production can be increased by the interplanting of two or more varieties (4, 5, 6, 11). Contrary to our earlier conclusions (10), cross-pollination evidently increases avocado fruit-set. The observed average increased set of about 40% may well mean a doubling of the grower's net profit-since fixed costs represent a large proportion of his debits.