Pecan trees (Carya illinoinensis ‘Wangenh C. Koch) are a monoecious, heterodichogomus, species that are wind pollinated. As trees get farther away from the pollinator, cross-pollination may decrease; resulting in flower or fruit drop. The flower or fruit drop may occur as close to 2 or 3 rows away from the pollinator row. In this research project 30 clusters were counted on terminal and lateral shoots on 5 trees spaced 30 feet (9 meters) apart in rows 1,3,5,7, and 9 in both directions. Data was collected from a single orchard with several varieties; however,'Pawnee' and 'Choctaw' were the only varieties included in the study. There was no decrease in cluster size as the distance from the pollinator increased.
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