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Effects of Water, Nitrogen and Competition on Growth, Yield and Yield Components of Field-grown Tepary Bean

  • Suzanne C. Nelson (a1), Gary P. Nabhan (a2) and Robert H. Robichaux (a3)


The effects of water and nitrogen on growth, yield and yield components of tepary bean (Phaseolus acutifolius) were evaluated at Tucson, Arizona in 1987 and the effects of water and intercrop competition with Sonoran panicgrass (Panicum sonorum) in 1988. Total shoot biornass and reproductive yield were significantly reduced by lack of water in both seasons. Addition of nitrogen had no significant effect on total shoot biomass or reproductive yield in 1987. Intercrop competition significantly reduced total shoot biomass and reproductive yield of tepary bean in 1988. Yield component responses varied slightly depending on treatment and year.



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Effects of Water, Nitrogen and Competition on Growth, Yield and Yield Components of Field-grown Tepary Bean

  • Suzanne C. Nelson (a1), Gary P. Nabhan (a2) and Robert H. Robichaux (a3)


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