Ali Abdullah Salim Al Badi
College of Agricultural and Marine Sciences, Department of Crop Sciences, E-mail Ali7albadi@gmail.com
1 Abstract
Ditylenchus is a group of plant parasitic nematodes
which is considered as a major problem in temperate areas on garlic and related
crops. A series of studies were created on Al Jabal Al Akdar and in vitro to
identify and control garlic nematode in Omani and Chinese varieties of garlic.
The main experiment consisted of the solarization of two fields in Alshraja in
Al Jabal Al Akder. Heat treatment experiments of the soil and garlic cloves was
performed in the lab. For nematode identification two experiments were conducted,
the first one was in molecular identification of DNA and the second one was
identification by electron microscope.
In the field there were nearly 31000
nematodes in every 250g of soil. Soil solarization showed no effect on nematode
populations. Identification of the nematode is important to get an efficient
solution for control or at least reduce the population. Molecular
identification confirmed Ditylenchus dipsaci as the causal agent of
garlic problem in Al Jabal Al Akhdar. In Oman as in many countries worldwide
nematodes threaten agricultural resources and it is important to know how to
act against this threat. The aims of this study were (i) identify nematodes and
(ii) find potential ways to control plant parasitic nematodes. One useful
solution to reduce losses is to use nematode free seed. The outcome of this
project can be used by the government and farmers to strengthen regional
agricultural.
2 Keywords
Ditylenchus
dipsaci Kuhn,
parasitic nematode, garlic, Oman. Heat treatment, chemical treatment,
soloraization, molecular identification, electron microscopy.
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