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Effects of Light, Temperature, KNO3, and Storage on Germination of Cogongrass 1
Author(s) -
Dickens Ray,
Moore G. M.
Publication year - 1974
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1974.00021962006600020001x
Subject(s) - germination , imperata , biology , agronomy , weed , plant ecology , horticulture , botany
Cogongrass ( Imperata cylindrica (L.) Beauv.) was introduced into the southeastern United States and has become a pest in the Gulf Coast area. An efficient seed germination procedure would aid the study of control of this species. Seed were germinated in the laboratory to determine the effects of light, KNO 3 temperature, and storage time on germination. Cogongrass germinated at temperatures ranging from 25 to 35C with optimum germination near 30C. Light increased both rapidity of germination and total germination. Neither rapidity of germination nor total seed germinated was affected by KNO 3 in the presence of light. Germination in the dark was enhanced by KNO 3 . Cogongrass seed exhibited a gradual decrease in germination percentage over 13 months when stored in the laboratory.