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Enhanced Germination and Emergence of Dormant Wild Mustard (Sinapsis arvensis) Seed by Two Substituted Phthalimides

Published online by Cambridge University Press:  12 June 2017

William W. Donald  and
Roland A. Hoerauf
William W. Donald
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Metabolism and Radiation Res. Lab./Dep. Agron., North Dakota State Univ., Fargo, ND 58105
Roland A. Hoerauf
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Metabolism and Radiation Res. Lab./Dep. Agron., North Dakota State Univ., Fargo, ND 58105
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Abstract

Applications of the substituted phthalimide growth regulators AC-94377 [1-(3-chlorophthalimido)cyclohexanecarboximide] and AC-99524 [1-tetrahydrophthalimido-cyclohexanecarboximide] to the soil surface stimulated germination and emergence of dormant wild mustard seed (Sinapsis arvensis L. ♯4 SINAR) shallowly planted in soil in greenhouse experiments. Surface applications of AC-94377 enhanced the germination and emergence of dormant wild mustard seed planted 0.6 cm deep in soil from nine locations as the rates were raised from 0.4 to 3.7 kg ai/ha. Surface application of AC-94377 increased emergence rates and also extended the period of wild mustard emergence. Increasing quantities of wheat (Triticum aestivum L.) straw on the soil surface reduced the effect of surface-applied AC-94377 on shallowly buried dormant wild mustard seed. When dormant wild mustard seed were buried 1.3, 2.5, or 3.8 cm deep, surface applications of AC-94377 also stimulated greater emergence than the dormant controls from these depths, strongly suggesting that the compound moved from the surface to the depth of planting.

Keywords

Charlockgermination stimulatorsgrowth regulatorsseedBrassica kaberSINAR
Type
Special Topics
Information
Weed Science , Volume 33 , Issue 6 , November 1985 , pp. 894 - 902
Copyright
Copyright © 1985 by the Weed Science Society of America 

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