Results 71 to 80 of about 533 (162)
Control of Tylenchulus semipenetrans on Citrus With Aldicarb, Oxamyl, and DBCP.
Soil application of DBCP (l,2-dibromo-3-chloropropane) and foliar applications of oxamyl (methyl N',N'-dimethyl-N-[(methylcarbamoyl)oxy]-l-thiooxamimidate) were compared for control of Tylenchulus semipenetrans in a grapefruit (Citrus paradisi) orchard, DBCP reduced nematode populations and increased fruit growth rate, fruit size at harvest, and yield ...
L W, Timmer, J V, French
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Distribution of Tylenchulus semipenetrans in a Texas Grapefruit Orchard.
Distribution of the citrus nematode (Tylenchulus semipenetrans) was studied over 18 months in a 6-year-old orchard of grapefruit (Citrus paradisi cv. Ruby Red) on sour orange (C. aurantium) rootstock. The 1.8-ha orchard was under chemical weed control, no tillage, and flood irrigation.
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Plant-parasitic nematodes (PPNs) pose a significant challenge to citrus farming worldwide, but their distribution and impact in the Al-Ahsa Oasis, Saudi Arabia (KSA), remain poorly understood.
Hosny Kesba +5 more
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Characterization of Citrus Rootstock Responses to Tylenchulus semipenetrans (Cobb).
Citrus rootstocks which significantly limited the reproduction of Tylenchulus semipenetrans (Cobb) "Citrus" and "Poncirus" biotypes responded to infection by producing a hypersensitive-type response in the root hypodermis, wound periderm and/or cavities in the root cortex, and/or abnormal vacuoles in nurse cell cytoplasm.
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Fitonematoides associados a frutíferas na região Noroeste do Paraná, Brasil
Com o objetivo de estudar a ocorrência de nematoides fitoparasitos em frutíferas cultivadas na região noroeste do Paraná, realizou-se um levantamento, envolvendo 124 amostras de solo e raízes coletadas de 19 espécies de frutíferas, em 15 municípios, no ...
Cláudia Regina Dias-Arieira +5 more
doaj
Efficient Procedure for Extracting Tylenchulus semipenetrans from Citrus Roots.
Investigations were undertaken to determine the suitability of sucrose and magnesium sulphate solutions and a silica colloidal suspension with centrifugation for extracting Tylenchulus semipenetrans from citrus roots. The efficiency of incubation, sodium hypochlorite, centrifugation, and maceration methods was also compared.
N, Greco, T, D'Addabbo
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Citrus decline, one of the major challenges in the orchards of Fars and Kohgiluyeh–Boyerahmad provinces, is a multifactorial disorder exacerbated by complex interactions between biotic and abiotic factors.
Hadi Karimipour Fard +4 more
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Comparison of five populations of Tylenchulus semipenetrans to Citrus, Poncirus, and their hybrids.
The infectivity of five populations of Tylenchulus semipenetrans were compared and differentiated on 10 hosts (5 Citrus spp., 1 Poncirus trifoliata, and 4 hybrids of Citrus spp. X P. trifoliata). Differences in levels of infection and development (P = 0.01) occurred between Citrus spp. and P. trifoliata cv.
J H, O'Bannon, V, Chew, A T, Tomerlin
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1) カラタチ,ユズ,夏橙の各実生苗を供試し,ミカンネセンチュウの寄生数,発育期間および発育温度を黒色火山灰土壌(植質壌土)で調査した。2) ミカンネセンチュウの寄生数は,夏橙が最も多く,ユズも多いが,カラタチではかなり少なかった。しかしカラタチがこの線虫に抵抗性あるいは耐虫性であるとは認められない。3) ミカンネセンチュウは,幼虫寄生から成熟雌の産卵までの期間が,20∼26°Cの温度(深さ5cmの平均地温)で,夏橙とユズでは5∼6週間,カラタチではこれよりも遅れる。4) この線虫の増殖の適温は20∼33°Cで,神奈川県の黒色火山灰土壌で4月下旬から9月下旬までの期間に主として増殖する。
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Effects of aldicarb and its sulfoxide and sulfone on the biology of Tylenchulus semipenetrans.
In laboratory testing, egg hatch of Tylenchulus semipenetrans was stimulated at concentrations of 1 and 10 microg/ml aldicarb solution and inhibited at 50 and 100 microg/ml. Aldicarb was more inhibitory to egg hatch than the aldicarb sulfoxide and the aldicarb sulfone.
S P, Huang, S D, Van Gundy
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