R. Tykocinski specialized in the laws and customs pertaining to Erez Israel, and from 1904 onward published an annual Lu'ah ("calendar") detailing liturgical and other customs for the whole year. This calendar was accepted as the authoritative guide for the liturgical and synagogal customs of the Ashkenazim in Israel; it continued to appear under the editorship of his son even after his death.
R. Tykocinski devoted himself especially to halakhic problems connected with astronomy, in which field he published Tekufat ha-Ḥamah u-Virkatah (1924); Bein ha-Shemashot (1929); and Sefer ha-Yomam (1943), on the international date line. His other works are Tohorat Yisrael (c. 1910); Ha-Ishah al pi Hukkat Yisrael (1920); Hilkhot Shevi'it (1910) and Sefer ha-Shemittah on the laws of the Sabbatical Year; Gesher ha-hayyim (1947, 19602) on the laws of mourning; and Sefer EreZ Yisrael (1955) on the laws and customs appertaining to Erez Israel. He also published many articles in various journals and left behind in manuscript novellae on the Talmud and responsa.