Effects of Meloidogyne incognita on forage yields on four annual clovers
The effects of the southern root-knot nematode (Meloidogyne incognita) on productivity of four annual clover cultivars were determined by comparing yields in infested and noninfested plots during 1986 and 1987. The clover cultivars included Bigbee berseem, Chief and Tibbee crimson and Yuchi arrowleaf. Highest numbers of M. incognita eggs at the final sampling dates were recovered from Bigbee plots both years. In may 1987, egg numbers were higher than initial levels for Bigbee, Chief, and Tibbee. Differences (P = 0.05) between yields of control and nematode-infested plots were found for Bigbee on 26 March 1986 and 29 April 1987 and for total forage yields in 1986. Maximum yields losses for Yuchi were 29.9 percent on 26 february 1986 and 28.8 percent (P = 0.05) on 19 March 1987, respectively,. Although Yuchi yields were initially suppressed each year, total forage yields of nematode-infected plants were not different (P = 0.05) from those of the control at later harvest dates. Tibbee and Chief appeared to be relatively tolerant to M. incognita
| Main Authors: | , |
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| Format: | biblioteca |
| Subjects: | PLANTAS FORRAJERAS, TRIFOLIUM, RENDIMIENTO, PERDIDAS, NEMATODOS DE LAS PLANTAS, MELOIDOGYNE INCOGNITA, |
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