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Pakistan Journal of Biological Sciences
  Year: 2007 | Volume: 10 | Issue: 3 | Page No.: 523-525
DOI: 10.3923/pjbs.2007.523.525
 
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The Effect of Johnsongrass (Sorghum halepense (L.) Pers.) Densities on Cotton Yield

Ahmet Uludag, Dogan Gozcu, Mine Rusen, Ramazan Sadet Guvercin and Abdullah Demir

Abstract:
Cotton is an important crop in Turkey. Johnsongrass is one of the worst weeds in cotton fields worldwide. Field experiments were carried out in 1992, 1997 and 2002 to show the effect of johnsongrass densities on cotton yield. Johnsongrass densities were 0, 1, 2, 4, 8, 16 and 32 plants per 8 m and 0, 3, 6, 8, 11, 14 and 22 plants per 4 m of cotton row. Data were fitted to equations Y = 1/(a+b*X8) in 1997 and 2002 for the number of johnsongrass in 8 m of row length and Y = 1/(a+b*X4-1/2) in 1992 and 1997 for the number of johnsongrass in 4 m of row length. Cotton yield was affected by all johnsongrass densities. One johnsongrass plant in 8 m of cotton row decreased cotton yield 4.82 and 9.42% in 1997 and 2002, respectively.
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How to cite this article:

Ahmet Uludag, Dogan Gozcu, Mine Rusen, Ramazan Sadet Guvercin and Abdullah Demir, 2007. The Effect of Johnsongrass (Sorghum halepense (L.) Pers.) Densities on Cotton Yield. Pakistan Journal of Biological Sciences, 10: 523-525.

DOI: 10.3923/pjbs.2007.523.525

URL: https://scialert.net/abstract/?doi=pjbs.2007.523.525

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