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Granular Herbicides for Woody Plant Control

  • R. W. Bovey (a1), H. L. Morton (a1), J. R. Baur (a1), J. D. Diaz-Colon (a1), C. C. Dowler (a1) and S. K. Lehman (a2) (a3)...

Abstract

Granular 4-amino-3,5,6-trichloropicolinic acid (picloram) was effective in controlling live oak (Quercus virginiana (Mill.), huisache) (Acacia farnesiana (L.), Willd.), and yaupon (Ilex vomitoria Ait.), but not honey mesquite (Prosopis juliflora (Swartz) DC. var. glandulosa (Torr.) Cockerell) in south Texas. Granular 5-bromo-3-sec-butyl-6-methyluracil (bromacil) controlled live oak and huisache. Herbicides applied to soil were usually most effective in spring and fall during periods of active brush growth. Picloram granules applied in May to a mixed stand of woody plants in Puerto Rico usually were effective. However, rates up to 30 lb/A were ineffective on some species.

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References

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1. Bovey, R. W., Davis, F. S., and Markle, M. G. 1967. Distribution of picloram in huisache after foliar and soil applications. Weeds 15:245249.
2. Bovey, R. W., Meyer, R. E., Davis, F. S., Merkle, M. G., and Morton, H. L. 1967. Control of woody and herbaceous vegetation with soil sterilants. Weeds 15:327330.
3. Darrow, R. A. and McCully, W. G. 1959. Brush control and range improvement in the post oak—blackjack oak area of Texas. Texas Agr. Exp. Sta. Bull. 942. 15 p.
4. Dowler, C. C., Forester, W., and Tschirley, F. H. 1968. Effect and persistence of herbicides applied to soil in Puerto Rican Forests. Weed Sci. 16:4550.
5. Meyer, R. E. and Riley, T. E. 1969. Influence of picloram granules and sprays on whitebrush. Weed Sci. 17:293295.
6. Whipple, S. D. and Moech, K. P. 1968. Potential uses of picloram 10K pellets in forest management. Down to Earth 24(1): 1317.

Granular Herbicides for Woody Plant Control

  • R. W. Bovey (a1), H. L. Morton (a1), J. R. Baur (a1), J. D. Diaz-Colon (a1), C. C. Dowler (a1) and S. K. Lehman (a2) (a3)...

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