Ploeg Antoon T
Department of Nematology, University of California-Riverside, Riverside 92521.
Plant Dis. 2002 May;86(5):505-508. doi: 10.1094/PDIS.2002.86.5.505.
Field experiments were conducted at two sites in California to evaluate the effects of marigold genotypes Tagetes patula var. Single Gold and Tagetes hybrid var. Polynema on Meloidogyne incognita infestation, root-galling, and yields of tomato grown immediately after marigold. Marigold cultivars were compared with a fallow control and with methyl iodide fumigation of soil prior to cultivation of M. incognita-susceptible and M. incognita-resistant tomato. Tomato yields after marigold were ca. 50% higher than after fallow. Marigold Single Gold consistently reduced nematode infestation and galling of tomato roots. Results were not significantly different between methyl iodide fumigation or marigold Single Gold at one site, but methyl iodide outperformed both marigold varieties at the other site. At one site, where melon var. Durango was grown during spring and summer of the year following cultivation of marigolds Single Gold and Polynema, melon yield increases of 95 and 45%, respectively, were still obtained.
在加利福尼亚的两个地点进行了田间试验，以评估万寿菊基因型孔雀草变种单金和杂交万寿菊变种多利内马对南方根结线虫侵染、根瘤形成以及在万寿菊种植后立即种植的番茄产量的影响。将万寿菊品种与休耕对照以及在种植对南方根结线虫敏感和抗性的番茄之前对土壤进行甲基碘熏蒸处理进行了比较。种植万寿菊后的番茄产量比休耕后高出约50%。万寿菊单金始终能减少线虫对番茄根的侵染和根瘤形成。在一个地点，甲基碘熏蒸或万寿菊单金之间的结果没有显著差异，但在另一个地点，甲基碘的效果优于两个万寿菊品种。在一个地点，在种植万寿菊单金和多利内马后的次年春夏种植了甜瓜品种杜兰戈，甜瓜产量仍分别提高了95%和45%。
