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A Convenient Label Stake for Nursery Plats
Author(s) -
Snelling R. O.
Publication year - 1936
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/agronj1936.00021962002800020010x
Subject(s) - citation , agriculture , agricultural science , division (mathematics) , library science , computer science , political science , mathematics , geography , arithmetic , biology , archaeology
Dwarf Yellow milo and 45 days when fed on Atlas sorgo. The mortality of nymphs, after the first instar, when reared on Dwarf Yellow milo was 8% as compared with 84% when Atlas sorgo was the food plant. The average body length of adults reared on Dwarf Yellow milo was nearly o.$ millimeter greater than that of those reared on Atlas sorgo. Other experiments indicate that chinch bugs have the ability to to select plants of a susceptible variety for feeding in preference to those of a resistant variety when the plants of both varieties are placed adjacent to one another. Data have likewise been obtained in the laboratory which show that chinch bugs will kill plants of a susceptiblevariety in muchless time than those of a resistant variety. The same number of bugs were confined on the different varieties tested under identical conditions in regard to age of plant, time of exposure, and, so far as known, all other conditions.--R~YNOLD G. DAHMS and RALPH O. SNELLING, U. S. Dept. of Agriculture, Lawton, Okla., and F. A. FENTON, Oklahoma A. ~ M. College, Stillwater, Okla.