Abstract Heading-back of about 50% of the previous season’ shoot growth increased leaflet area, internode length and total N of the leaflets. Heading-back did not affect P, K, Zn content of the leaflets or nut yield and quality. SADH increased Zn content of the leaflets, with no effect on N, P, and K. Internode length was reduced with increases in concn of SADH and leaflet area was not affected. Yield and quality were not affected the year of application, but 4,000 ppm significantly increased the yield the next year, an off-production year.