نتایج جستجو برای: nematode population

تعداد نتایج: 707809  

Journal: :Turkish journal of entomology 2021

Stem and bulb nematode, Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae), is one of the most important plant parasitic nematodes worldwide. The host range local populations needs to be determined for control using crop rotation. Susceptibility 29 species was tested onion garlic D. from Central Anatolian Plateau in Turkey under growth chamber conditions Karaman 2019. Based on reproduction...

Ebrahimi L, TanhaMaafi Z, KarbalaeiKhiavi H, Didehbaz G, Azarmi Y and Zamani R (2019) Distribution and population density of cereal cyst nematode in Ardabil province. Plant Pathology Science 8(2):9-15. DOI: 10.2982/PPS.8.2.9 Introduction: Cereal cyst nematodes (CCN), Heterodera species, are important parasitic nematodes of cereal. Potato cyst nematodes (PCN), Globodera species, are also seriou...

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...

Journal: :Journal of nematology 1986
R Rodríguez-Kábana

Inorganic fertilizers containing ammoniacal nitrogen or formulations releasing this form of N in the soil are most effective for suppressing nematode populations. Anhydrous ammonia has been shown to reduce soil populations of Tylenchorhynchus claytoni, Helicotylenchus dihystera, and Heterodera glycines. The rates required to obtain significant suppression of nematode populations are generally i...

Journal: :Journal of nematology 2005
Sha Tang Bradley C Hyman

To enable investigation of nematode mitochondrial DNA evolution, methodology has been developed to amplify intact nematode mitochondrial genomes in preparative yields using a rolling circle replication strategy. Successful reactions were generated from whole cell template DNA prepared by alkaline lysis of the rhabditid nematode Caenorhabditis elegans and a mermithid nematode, Thaumamermis cosgr...

Journal: :Pest management science 2003
David J Chitwood

The recent de-registration of several chemical nematicides and the impending loss of methyl bromide from the pest-control market necessitate the development of new methods for controlling nematode-induced crop damage. One approach for developing novel target-specific controls is by exploiting fundamental differences between the biological processes of nematodes and their host plants. Researcher...

2005

DOUDA O. (2005): Host range and growth of Stem and Bulb Nematode (Ditylenchus dipsaci) populations isolated from garlic and chicory. Plant Protect. Sci., 41: 104–108. Host range and growth of two Ditylenchus dipsaci (Stem and Bulb Nematode) populations on onion, garlic, leek, spinach and chicory were compared. Inoculation was conducted by placing a droplet of 1.5% CMC suspension containing nema...

2013
N. Sasanelli

Sasanelli, N., Vovlas, N., Trisciuzzi, N., Cantalapiedra-Navarrete, C., Palomares-Rius, J. E., and Castillo, P. 2013. Pathogenicity and host–parasite relationships of Heterodera cruciferae in cabbage. Plant Dis. 97:333-338. Stunted cabbage (‘Lupini’) associated with severe soil infestations by a cyst-forming nematode were observed in large patches of open fields in Castellaneta, province of Tar...

Journal: :IOP conference series 2023

Abstract Root knots, caused by Meloidogyne spp. is among the plant pathogens that lead to significant yield loss in patchouli plants. Farmers have used synthetic nematicides control pathogen for many years. In fact, chemicals not only harm environment but also might degrade quality of agriculture products. Therefore, this study, we examined several dosages Bacillus thuringiensis (Bt) on Pogoste...

Journal: :Journal of nematology 1991
R McSorley D W Dickson

Nematode population densities in field plots were estimated by collecting samples consisting of 12 soil cores. Plots encompassed a variety of plant hosts and sampling dates, and provided data on the population densities of seven species of plant-parasitic nematodes. Three separate samples were collected per plot on each sampling date to obtain estimates of the mean and variance of numbers for e...

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