Author
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CASWELL-CHEN, E - UNIVERSITY OF CALIFORNIA |
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Robinson, Arin |
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Submitted to: Nematropica
Publication Type: Abstract Only Publication Acceptance Date: 7/31/1996 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: Records of 171 dicot and 28 monocot hosts of Rotylenchulus reniformis were retrieved from NEMABASE, a digital database of nematode plant hosts compiled by the University of California. Results were compared with published reviews, research papers, and expert opinion. Forty-nine plant families contained hosts. Twenty-one of 29 non-hosts were monocots; no gymnosperm or pteridophyte hosts were retrieved. Resistance was reported in 32 host species. Eighty-eight host records were from pot experiments, 53 from crop land, and 102 from other locations. Twenty records reported plant damage, but Koch's postulates often were not tested. In citrus (Citrus spp.) and tea (Camellia sinensis, C. assamica) dense soil populations have been found with no gravid females on citrus or tea roots, likely due to reproduction on weeds or cover crops. Recent research on management of R. reniformis included Upland cotton (G. hirsutum), pigeonpea (Cajanus cajan), chickpea (Cicer arietinum), pineapple (Ananas comosus), and various vegetables. Management is constrained by the nematode's wide host range, prolific reproduction on numerous weeds, and co-occurrence with other pests. Management strategies investigated included rotation of Upland cotton with sorghum, maize, and resistant cultivars of soybean in the southern United States, rotation of pineapple with sugarcane in Hawaii, rotation with antagonists crops such as French marigold, Rhodes grass and sunn hemp, and mixed cropping of a susceptible crop with a non-host, e.g. cowpea with maize in Nigeria, and tomato with Zinnia in Egypt. |
