Citation
Unknown. “Spraying experiments on Bartlett Pear orchard at Chestnut Farm, Scotland, Va., Oct. 1893. Sprayed trees on left, unsprayed on the right. Also, the orchard in which Waite made first discoveries of self-sterililty of pears and made extensive pollination tests..” Special Collections, USDA National Agricultural Library. Accessed December 1, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/280.