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Published in Agron J 98:691-697 (2006)
DOI: 10.2134/agronj2005.0327
© 2006 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Nitrogen Fertility and Planting Date Effects on Lint Yield and Cry1Ac (Bt) Endotoxin Production

W. T. Pettigrewa,* and J. J. Adamczyk, Jr.b

a USDA-ARS, Crop Genetics and Production Research Unit, P.O. Box 345, Stoneville, MS 38776
b USDA-ARS, Honey Bee Research Unit 2413 E. Hwy 83, Weslaco, TX 78596


Figure 1
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  		Fig. 1. Number of main-stem nodes of cotton above a sympodial branch with a first-position white bloom (bloom at anthesis) at various times throughout the 2001 and 2002 growing seasons in plots of four different N fertility treatments. These N fertility treatment means were averaged across two planting dates and three cotton varieties. Vertical bars denote LSD values at the 0.05 level and are present only when the differences between N fertility treatments are statistically significant at the 0.05 level.

 

Figure 2
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  		Fig. 2. Number of main-stem nodes of cotton above a sympodial branch with a first-position white bloom (bloom at anthesis) at various times throughout the 2003 and 2004 growing seasons in plots of four different N fertility treatments. These N fertility treatment means were averaged across two planting dates and three cotton varieties. Vertical bars denote LSD values at the 0.05 level and are present only when the differences between N fertility treatments are statistically significant at the 0.05 level.

 




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