Publications

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phytoparasitic nematode surveys of arkansas cotton fields, 1986-1988.surveys from 1986 to 1988 identified 22 phytoparasitic nematode species in arkansas cotton fields. meloidogyne spp. was found in ca. 15% of the fields sampled. of these samples ca. 33% were found to have a population density of 106/100 cm(3) of soil or more. rotylenchulus reniformis was found in high numbers (5,000 +/100 cm(3) of soil) in 1% of the fields sampled in 1988. heterodera glycines was found in ca. 22% of the samples, presumably because of past cropping to soybean. other common species ...198919287659
characterization of sialyl and galactosyl residues on the body wall of different plant parasitic nematodes.the plant parasitic nematodes helicotylenchus multicinctus, meloidogyne javanica, tylenchulus semipenetrans, and xiphinema index, differing in their host specificity and parasitic habits, were analyzed as to their cuticle surface sialyl, galaclosyl, and/or n-acetylgalactosaminyl residues. the procedure involved the selective oxidation of sialic acid and galactose/n-acetylgal-actosamine residues using periodate and galactose oxidase, respectively, to form reactive aldehyde groups. these functiona ...198219295671
effects of dosage sequence on the efficacy of nonfumigant nematicides, plantain yields, and nematode seasonal fluctuations as influenced by rainfall.four nonfumigant nematicides applied three times during the wet season were used to study dosage sequence and nematicide effectiveness. control of helicotylenchus multicinctus (cobb) thorne and meloidogyne javanica (treub) chitwood increased plantain (musa aab) yields. the nematicide (aldicarb, carbofuran, oxamyl, and miral) performance and yield response varied with dosage sequences. applications of 2, 3, and 2 g ai/tree in march, july, and october (sequence i), respectively, gave greater contr ...198319295837
quantitative digital imaging of banana growth suppression by plant parasitic nematodes.a digital camera fitted with a hemispherical lens was used to generate canopy leaf area index (lai) values for a banana (musa spp.) field trial with the aim of establishing a method for monitoring stresses on tall crop plants. the trial in uganda consisted of two cultivars susceptible to nematodes, a plantain, gonja manjaya and an east african highland banana, mbwazirume, plus a nematode resistant dessert banana, yangambi km5. a comparative approach included adding a mixed population of radophol ...201223285286
field resistance of transgenic plantain to nematodes has potential for future african food security.plant parasitic nematodes impose losses of up to 70% on plantains and cooking bananas in africa. application of nematicides is inappropriate and resistant cultivars are unavailable. where grown, demand for plantain is more than for other staple crops. confined field testing demonstrated that transgenic expression of a biosafe, anti-feedant cysteine proteinase inhibitor and an anti-root invasion, non-lethal synthetic peptide confers resistance to plantain against the key nematode pests radopholus ...201525634654
generation of transgenic plantain (musa spp.) with resistance to plant pathogenic nematodes.plant parasitic nematodes impose a severe constraint on plantain and banana productivity; however, the sterile nature of many cultivars precludes conventional breeding for resistance. transgenic plantain cv. gonja manjaya (musa aab) plants, expressing a maize cystatin that inhibits nematode digestive cysteine proteinases and a synthetic peptide that disrupts nematode chemoreception, were assessed for their ability to resist nematode infection. lines were generated that expressed each gene singly ...201222435592
nematicidal effects of oxamyl applied to leaves of banana seedlings.foliar applications of oxamyl prevented nematodes from invading roots of diploid bananas. one spray with 1,250 microg/ml was more effective than 1, 2, or 3 sprays with 625 microg/ml applied at 5-day intervals. after 3 sprays with 1,250 microg/ml, invasion may be prevented for up to 4 weeks and possibly longer. washing roots after oxamyl treatments prevented nematicidal control. when applied to nematode-infected plants, three sprays of oxamyl decreased nematode populations in the roots.197719305584
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