Some Physiological Effects of Chlormequat (2—Chlercethyl Trimethylammoniuni Chloride) Oh The Growth of Shallots. (Allium Aacalenicum L.)

Abstract

Some physiological effects of chlormequat on the growth of shallots (Allium asealonicum L.) were studied. Chlormequat at 0, 2500 and 5000ppm was sprayed it 7, 21, and 35 days after planting. Chlormequat had no effect on the growth in fresh or dry weight, leaf number, leaf length, leaf diameter and net assimilation rate of shallots but increased the leaf area index of shallot plants. In a second experiment bulbs of plants sprayed with chlormequat were planted to determine residual effects of the chemical. The plants produced from treated bulbs compared with control plants exhibited increases in rate of sprouting, growth in fresh or dry weight, leaf number and leaf area index but leaf length and leaf diameter were not affected. Chlormequat had little direct effect on shallots but planting material obtained from plants treated with chlormequat may be useful to increase yields of shallots.