Control and Ecological Studies of Scotch Thistle
- 1 January 1969
- journal article
- research article
- Published by Cambridge University Press (CUP) in Weed Science
- Vol. 17 (1) , 60-63
- https://doi.org/10.1017/s0043174500030903
Abstract
The range weed, Scotch thistle (Onopordum acanthium L.), is an increasing problem in the western United States. It competes with desirable forage plants and the flower stalks are a barrier to livestock movement. Prolific production of viable but dormant achenes makes this species a persistent pest. Applications of 4-amino-3,5,6-trichloropicolinic acid (picloram) in the spring or fall, at rates as low as 0.03 lb/A, gave control of Scotch thistle.Keywords
This publication has 2 references indexed in Scilit:
- Factors Affecting the Seed Production of Teesdalia Nudicaulis: I. Germination DateJournal of Ecology, 1964
- The Reproductive Capacity of PlantsEcology, 1943