نتایج جستجو برای: nematode control

تعداد نتایج: 1342323  

Journal: :Journal of nematology 1986
N A Minton

Literature reporting the development of conservation tillage and the research that has been conducted on nematode control in crops grown in conservation tillage systems is reviewed. Effects of different types of conservation tillage on population densities of various nematode species in monocropping and multicropping systems, effects of tillage on nematode distribution in the soil profile, effe...

Journal: :Journal of nematology 1977
S D Van Gundy J D Kirkpatrick J Golden

A severe root rot of tomato caused by Meloidogyne incognita and Rhizoctonia solani was associated with nutrient mobilization into gall tissue and root exudation. Root decay did not develop when root exudates were continuously removed by leaching. When leachates were collected from M. incognita-infected and control roots and applied to roots of tomatoes inoculated with R. solani alone, roots rec...

Journal: :Journal of nematology 1978
H Ferris

Determinatitm and use of economic thresholds is considered essential in nematode pest management programs. The economic efficiency of control measures is lnaximized when the difference hetween the crop valne and the cost of pest control is greatest. Since the cost of reducing the nematnde pnpnlation varies with the magnitutle of the reduction attempted, an economic (optimizing) threshold can be...

ژورنال: علوم آب و خاک 2007
احمد خیری, , حشمت اله رحیمیان, , عباس شریفی تهرانی, , نوازاله صاحبانی, ,

The effect of Rathayibacter tritici on the movement of Anguina tritici larva and nematode function as vector of ear rot bacterium was conducted in the laboratory (Agarose plates) and greenhouse conditions. The results showed that the contact of nematode larva with high concentration of bacterium or long duration of nematode-bacteria contact can decrease the movement and the efficiency of nemato...

Root-knot nematodes cause physiological and anatomical disorders in plants. The present study contains the results of an investigation of the effect of Meloidogyne incognita race2 on the growth of roots and aerial organs of tomato under greenhouse conditions. The experiment in a completely randomized design split split plot on two susceptible (Falat Y) and tolerante (Gina VF) tomatoes variety w...

Journal: :دانش گیاه پزشکی ایران 0
هادی گلزاری دانش آموخته کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج ناصر پنجه که دانشیار دانشگاه ادیمی زابل مسعود احمدزاده دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج محمد سالاری استادیار دانشگاه ادیمی زابل ابراهیم صداقتی خروی استادیار دانشگاه ولی عصر(عج) رفسنجان، رفسنجان

an ability of the fluorescent pseudomonad bacteria is to secrete such secondary metabolites as hydrogen cyanide, protease, salicylic acid as well as siderophore which prevent the growth of soil-habitant pathogens. tests were done for evaluating the materials produced by the said bacteria. in the tests' cultures, p. aeruginosa strains 7nsk2, utpf92, and utpf86 produced the most hydrogen cya...

2009
C. Van Colen F. Montserrat K. Verbist M. Vincx M. Steyaert J. Vanaverbeke P. M. J. Herman S. Degraer T. Ysebaert

To assess the role of macrofauna-mediated sediment changes on nematode community recovery, we examined the temporal development of macrobenthos, nematode communities and sediment properties following hypoxia in 16 m2 replicated plots over a 6 mo period. Hypoxia drastically changed nematode community composition (i.e. reduced diversity and abundances of all dominant nematodes, except Odontophora...

Journal: :دانش گیاه پزشکی ایران 0
شلاله مصلحی غلامرضا نیکنام سعید اهری زاد

the reaction of four field tomato cultivars (super strain b, super chief, mobil, and royal) along with two greenhouse cultivars (polaris and es 1002 f1) was evaluated agianst m. javanica under greenhouse conditions. the soil around tomato seedlings (bearing 5-6 leaves) was inoculated with two levels of the nematode inoculum i.e. 1000 and 2000 eggs as well as second stage juveniles per every kg ...

Journal: :Journal of nematology 1988
M Ichinohe

AMONG IMPORTANT NEMATODE SPECIES OCCURRING IN JAPAN, CURRENT RESEARCH ACHIEVEMENTS WITH THE FOLLOWING FOUR NEMATODES ARE REVIEWED: 1) Soybean cyst nematode (SCN), Heterodera glycines - breeding for resistance, race determination, association with Cephalosporium gregatum in azuki bean disease, and isolation of hatching stimulant. 2) Potato-cyst nematode (PCN), Globodera rostochiensis - pathotype...

Journal: :Journal of nematology 2004
S Verdejo-Lucas M V McKenry

Of the many nematode species that parasitize citrus, Tylenchulus semipenetrans is the most important on a worldwide basis. Management of the citrus nematode remains problematic as no one tactic gives adequate control of the nematode. An overall management strategy must include such components as site selection, use of non-infected nursery stock, use of at lease one post-plant nematode control t...

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