Cabbage (Brassica oleracea L. Var. capitata) is an important vegetable crop in
Kenya. It is widely used as human food and animal feed. Owing to findings
that cabbage is a poor host to root knot nematode (RKN), this crop has been
incorporated in plant parasitic nematode (PPN) management as a rotation crop.
As a result very little has been done to study nematodes associated with this
crop, yet there are reports of nematodes infecting it. A survey was therefore
conducted in Nyandarua and Embu Agro-ecological Zones (AEZs), of Kenya
to determine the types, abundance and frequency of occurrence of PPNs
associated with cabbage. A total of 60 soil and root samples were collected
from six AEZs. Nematodes were extracted from 100 g of soil per sample using
the modified Baermann extraction tray technique while nematodes within the
roots were extracted using modified maceration and filtration technique. Roots
were rated for galling index using a scale of 0-5, then stained for egg masses
and presence of endoparasitic nematodes. Extracted nematodes were
enumerated and identified to genera level. A total of nineteen (19) genera of
PPNs belonging to ten (10) families of the Order Tylenchida, Dorylaimida and
Triplonchida were identified from both soil and roots. Lesion nematodes
(Pratylenchus spp.) were detected in 58% of the root samples, followed by
Helicotylenchus spp. (27%) and root-knot nematode (RKN) Meloidogyne spp.
(23%). The RKN galling index ranged from 1 to 2 on a scale of 1-5. The lesion
nematodes had the highest frequency of occurrence (A/F) in soil (87%)
followed by Helicotylenchus spp. (82%) and Tylenchorhynchus spp. (67%).
Other PPNs genera were identified at varying absolute frequencies. The
population densities of nematodes differed significantly (P
MWANGI, J (2021). Plant Parasitic Nematodes Associated With Cabbage In Different Agro-Ecological Zones In Nyandarua And Embu Counties, Kenya. Afribary. Retrieved from https://afribary.com/works/plant-parasitic-nematodes-associated-with-cabbage-in-different-agro-ecological-zones-in-nyandarua-and-embu-counties-kenya
MWANGI, JAMES "Plant Parasitic Nematodes Associated With Cabbage In Different Agro-Ecological Zones In Nyandarua And Embu Counties, Kenya" Afribary. Afribary, 26 May. 2021, https://afribary.com/works/plant-parasitic-nematodes-associated-with-cabbage-in-different-agro-ecological-zones-in-nyandarua-and-embu-counties-kenya. Accessed 11 Dec. 2023.
MWANGI, JAMES . "Plant Parasitic Nematodes Associated With Cabbage In Different Agro-Ecological Zones In Nyandarua And Embu Counties, Kenya". Afribary, Afribary, 26 May. 2021. Web. 11 Dec. 2023. < https://afribary.com/works/plant-parasitic-nematodes-associated-with-cabbage-in-different-agro-ecological-zones-in-nyandarua-and-embu-counties-kenya >.
MWANGI, JAMES . "Plant Parasitic Nematodes Associated With Cabbage In Different Agro-Ecological Zones In Nyandarua And Embu Counties, Kenya" Afribary (2021). Accessed December 11, 2023. https://afribary.com/works/plant-parasitic-nematodes-associated-with-cabbage-in-different-agro-ecological-zones-in-nyandarua-and-embu-counties-kenya