Effects of Weed-free Period on Seed Yield and Yield Components of Double-cropped Soybean (Glycine max L.)

ARSLAN M., Üremiş İ., Uludağ A.

Asian Journal of Plant Sciences, vol.4, no.3, pp.271-274, 2005 (Scopus)

  • Publication Type: Article / Article
  • Volume: 4 Issue: 3
  • Publication Date: 2005
  • Journal Name: Asian Journal of Plant Sciences
  • Journal Indexes: Scopus, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Veterinary Science Database
  • Page Numbers: pp.271-274
  • Erciyes University Affiliated: Yes


Maintaining weed-free period longer than required for optimum seed yield increases cost of crop production. A two-year study was conducted to determine the critical weed-free period for double-cropped soybean to obtain maximum seed yield. The experimental design was Randomized Complete Blocks with three replications. Seed yield varied between 1289.3 and 4778.3 kg ha-1 in 2002 and between 1007.3 and 3980.0 kg ha-1 in 2003. The highest and the lowest seed yield were obtained from weed-free and weedy control treatments, respectively in both years. Seed yield exponentially increased with the increasing weed-free period in 2002 and 2003. Seed yield increase in increased period of weed-free plots was resulted from increased pod and seed number/plant. The result of present study showed that double-cropped soybean must be kept weed-free from emergence till physiological maturity to obtain maximum seed yield.