Origin: in Davis, Calif., by E.F. Serr and H.I. Forde, California Agr. Expt. Sta. Introd. in 1968. Waterloo × Payne. Cross made in 1951; selected in 1957; tested as UC 52-61. Nut: long, Eureka type, pointed at the apex, 33 mm in cheek diam.; shell seal good; kernel 53% of nut, high quality; 80% of those tested had light colored kernels; matures midseason. Tree: very productive; needs heavy heading back to prevent breakage when young; leafs out 6 days after Payne; 80% of lateral buds producing pistillate flowers. Performance has been good in the Gustine district, from which the name was obtained. Fruit:
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