scholarly journals Suppressive effect of rye cultivation on soil populations of the northern root-lesion nematode, Pratylenchus penetrans (Cobb) in Hokkaido.

2009 ◽  
Vol 39 (1) ◽  
pp. 31-43 ◽  
Author(s):  
Eiiti Yamada ◽  
Futoshi Sakuma ◽  
Minoru Takahashi ◽  
Ken Hashizume
Keyword(s):  
Suppressive Effect ◽  
Pratylenchus Penetrans ◽  
Root Lesion Nematode ◽  
Lesion Nematode

EFFECTS OF SOIL MANAGEMENT ON NUMBERS OF THE ROOT-LESION NEMATODE PRATYLENCHUS PENETRANS IN SOILS OF ONTARIO PEACH ORCHARDS

1973 ◽  
Vol 53 (1) ◽  
pp. 181-185
Author(s):  
C. F. MARKS ◽  
W. J. SAIDAK ◽  
P. W. JOHNSON
Keyword(s):  
Cover Crops ◽  
Sandy Loam ◽  
Management Practice ◽  
Soil Management ◽  
Pratylenchus Penetrans ◽  
Root Lesion Nematode ◽  
Entire Area ◽  
Red Fescue ◽  
Rate Of Increase ◽  
Lesion Nematode

The use of herbicides and cover crops in peach orchards influenced the numbers of the root-lesion nematode, Pratylenchus penetrans, in Fox sandy loam soils. Plots treated over the entire area with the herbicide combination of paraquat (1,1′-dimethyl-4,4′-bipyridinium ion) and linuron (3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea) had the smallest number of P. penetrans in the soil. The soil management practice used by many Ontario growers, clean cultivation until 1 July followed by a weed cover, resulted in the largest numbers of nematodes in the soil. Creeping red fescue (Festuca rubra L.) as a cover crop retarded the rate of increase of P. penetrans numbers in the soil but Sudan grass (Sorghum vulgare cult sudanense Hitchc.) did not. Weed control practices that permitted a temporary re-establishment of weed covers, did not retard the increase of P. penetrans numbers. Use of paraquat plus linuron to limit weed growth in the tree rows coupled with a permanent cover of creeping red fescue between the rows appears to be an effective way of retarding increases of P. penetrans numbers in peach orchards. Soil management systems that incorporate these features may be of practical value to Ontario peach growers.

scholarly journals Crotalaria species in succession to soybean for the management of Pratylenchus brachyurus

2020 ◽  
Vol 50 (7) ◽  
Author(s):  
Thays Torquato Cruz ◽  
Guilherme Lafourcarde Asmus ◽  
Rodrigo Arroyo Garcia
Keyword(s):  
Production Systems ◽  
High Capacity ◽  
Suppressive Effect ◽  
Nematode Population ◽  
Agricultural Crop ◽  
Root Lesion Nematode ◽  
Soil Pathogens ◽  
Mato Grosso ◽  
Pratylenchus Brachyurus ◽  
Lesion Nematode

ABSTRACT: Soybean is the main agricultural crop in the State of Mato Grosso do Sul, Brazil. It is primarily cultivated in a crop succession system, in wich soybean is grown in spring/summer, followed by corn or graminaceous pastures in autumn/winter as a second crop. Due to the intensive cultivation, new phytosanitary problems have arisen, among them the root-lesion nematode, Pratylenchus brachyurus, which besides causing damage to plant roots, can be important gateway for other soil pathogens. The recent occurrence of high nematode population densities has brought great concern due to the limited resistant soybean genotypes available. Besides, the use of nematicides only reduces nematodes populations temporarily. A viable alternative for the control of soil nematodes could be the use of Crotalaria spp. in succession or rotation with soybean. Crotalaria is immune or a bad host to the nematode, besides having high capacity of biological nitrogen fixation. Thus, the objective of the present research was to define the best way of insertion of this legume as a second crop in soybean production systems to reduce the population density of the root-lesion nematode. Two experiments were carried out: one in the field, in an infested area, and other in a greenhouse. In both experiments, the treatments were: 1) Zea mays, 2) Brachiaria brizantha cv. Xaraés,, 3) Z. mays + Crotalaria spectabilis, 4) Z. mays + C. ochroleuca, 5) B. brizantha cv. Xaraés + C. spectabilis, 6) B. brizantha cv. Xaraés + C. ochroleuca, 7) C. spectabilis, and 8) C. ochroleuca. The effect of the treatments was evaluated by estimating the number of nematodes in the roots of autumn/winter crops, as well as in the roots of the soybean cultivated in the sequence. The cultivation of both Crotalaria species provided suppression of the nematode population. However, when intercropped with corn or Xaraés palisade grass, the suppressive effect of Crotalaria was supplanted by corn and Xaraés palisadegrass susceptibility to the root-lesion nematode.

THE PATHOGENICITY OF PRATYLENCHUS PENETRANS TO CELERY

1963 ◽  
Vol 43 (1) ◽  
pp. 70-74 ◽  
Author(s):  
J. L. Townshend
Keyword(s):  
Plant Nutrients ◽  
Silica Sand ◽  
Pratylenchus Penetrans ◽  
Root Lesion Nematode ◽  
Primary Parasite ◽  
Lesion Nematode

Celery seedlings, grown aseptically in silica sand with plant nutrients, were inoculated with surface-sterilized specimens of the root lesion nematode Pratylenchus penetrans (Cobb, 1917) Filip. & Stek., 1941. The reactions of invaded roots were studied microscopically. The epidermis, cortex, and endodermis of young celery roots showed different degrees of discoloration after invasion of P. penetrans, with the endodermis most severely affected. Pratylenchus penetrans was a primary parasite and pathogen of celery.

Tagetes patula as an effective catch crop for long-term control of Pratylenchus penetrans

Nematology ◽  
2004 ◽  
Vol 6 (6) ◽  
pp. 877-881 ◽  
Author(s):  
Albartus Evenhuis ◽  
Gerard Korthals ◽  
Leendert Molendijk
Keyword(s):  
Population Density ◽  
Economic Loss ◽  
Soil Fumigation ◽  
Economic Damage ◽  
Tagetes Patula ◽  
Pratylenchus Penetrans ◽  
Root Lesion Nematode ◽  
Rate Of Increase ◽  
Chemical Soil ◽  
Lesion Nematode

AbstractTagetes patula is well known to be able to diminish Pratylenchus penetrans (Cobb) populations. In a field experiment, the increase of the P. penetrans soil population density after growing T. patula was significantly less than after chemical soil fumigation with metam sodium. The effect of T. patula on P. penetrans population densities lasted longer than the effect of chemical soil fumigation. Strawberries were grown for 3 consecutive years after T. patula without damage by the root lesion nematode. Assuming a linear rate of increase of the P. penetrans population density, we predict that strawberries could be grown for about 7 successive years without economic damage due to the root lesion nematode. Strawberry yield was greater from the crop grown 3 years after T. patula than that after soil fumigation 4 years previously. About 2 t strawberry yield increase is necessary to allow the growth of Tagetes every 5th year, without economic loss. The possibility of growing both strawberries and Tagetes in the same year should be investigated.

Nematicidal Activities of 4-Hydroxyphenylacetic Acid and Oidiolactone D Produced by the Fungus Oidiodendron sp.

2011 ◽  
Vol 66 (1-2) ◽  
pp. 31-34 ◽  
Author(s):  
Kouhei Ohtani ◽  
Shozo Fujioka ◽  
Atsumi Shimada ◽  
Yasuo Kimura
Keyword(s):  
Bursaphelenchus Xylophilus ◽  
Pine Wood Nematode ◽  
Pratylenchus Penetrans ◽  
Root Lesion Nematode ◽  
Pine Wood ◽  
Spectroscopic Analyses ◽  
Hydroxyphenylacetic Acid ◽  
Lesion Nematode

Two nematicides, 4-hydroxyphenylacetic acid (4-HPA) (1) and oidiolactone D (2), were isolated from cultures of the fungus Oidiodendron sp., and their structures were identified by spectroscopic analyses. Compound 2 showed nematicidal activities against the root-lesion nematode, Pratylenchus penetrans, and the pine wood nematode, Bursaphelenchus xylophilus. Compound 1 was also active against these two nematodes but to a lesser extent.

Quantitative detection of the root-lesion nematode, Pratylenchus penetrans, using qPCR

2013 ◽  
Vol 137 (2) ◽  
pp. 403-413 ◽  
Author(s):  
Fouad Mokrini ◽  
Lieven Waeyenberge ◽  
Nicole Viaene ◽  
Fouad Abbad Andaloussi ◽  
Maurice Moens
Keyword(s):  
Quantitative Detection ◽  
Pratylenchus Penetrans ◽  
Root Lesion Nematode ◽  
Lesion Nematode
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