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Effects of Weed Control and Irrigation on Pecan (Carya illinoinensis) Growth and Yield

  • Michael G. Patterson (a1) and William D. Goff (a2)

Abstract

Pecan trees subjected to different weed control and irrigation regimes from planting in 1986 through 1993 produced similar yields when irrigated (400 kg/ha, 3-yr avg) and not irrigated (320 kg/ha, 3-yr avg). Trees receiving total chemical weed control produced over five times more pecans (735 kg/ha, 3-yr avg) than weedy trees (131 kg/ha, 3-yr avg). Trees receiving disking produced more pecans when irrigated (677 kg/ha, 3-yr avg) than when not irrigated (339 kg/ha, 3-yr avg). Growth rate, expressed as increase in tree stem diameter, decreased for trees in all treatments once trees began bearing.

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References

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1. Alabama Pesticide Handbook. 1993. Pecan weed control, peach weed control. Alabama Coop. Ext. Ser., Auburn, AL. 388 p.
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3. Curtis, L. M., Goff, W. D., and Tyson, T. W. 1986. Drip irrigation for pecans in Alabama. Alabama Coop. Ext. Serv. Cir. ANR-448, 11 p. Auburn University, AL.
4. Goff, W. D., Patterson, M. G., and West, M. S. 1991. Orchard floor management practices influence elemental concentrations in young pecan trees. HortScience 26:13791381.
5. Patterson, M. G., Wehtje, G., and Goff, W. D. 1990. Effects of weed control and irrigation on the growth of young pecans. Weed Technol. 4:892894.
6. Stein, L. A., McEachern, G. R., and Storey, J. B. 1989. Summer and fall moisture stress and irrigation scheduling influence pecan growth and production. HortScience 24:607611.
7. Vencil, W. K., Giraudo, L. J., and Langdale, G. W. 1993. Soil moisture relations and critical period of Cynodon dactylon (L.) Pers. (coastal bermudagrass) competition in conservation tillage cotton (Gossypium hirsutum L.). Weed Res. 33:8996.
8. Weller, S. C., Skroch, W. A., and Monaco, T. J. 1985. Common bermudagrass (Cynodon dactylon) interference in newly planted peach (Prunus persica) trees. Weed Sci. 33:5056.

Keywords

Effects of Weed Control and Irrigation on Pecan (Carya illinoinensis) Growth and Yield

  • Michael G. Patterson (a1) and William D. Goff (a2)

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