ABSTRACT
These studies on evaluation of cassava cultivars and intercropping with legumes as an
integrated nematode control strategy in cassava production were carried out as
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greenhouse/microplot and field experiments. Of the 200 cultivars screened for resistance
to Meloidogyne spp., only 76 survived and from this lot only 3 lines 77/227, TMS30572
and 73/222, showed any resistance while 7 others namely NR8082, 75.668, 73/238
(Egbenegbe), 73/295, 73/118, 75740(Panya), 82/00661 and 73295B were tolerant. All the
other cultivars tested were susceptible. The second experiment, to determine the
economic threshold level of the root-knot nematode M. javanica populations on two
cassava varieties, showed that, with the exception of the control plants, the root-knot
nematode damage was obtained at all levels of the inoculum used and the root-knot
nematode populations had no significant effect on the aerial growth parameters like leaf
and stake weights. The two cassava varieties differed significantly in the final nematode
population in their roots. The economic threshold level was identified as an initial density
of 500eggs/plant. The lower pest values obtained for TMS30572 with increase in
inoculum density further confirmed it to be resistant to M. javanica.
Intercropping four cassava varieties with four legume types in microplots revealed that
nematode at both levels used, (0 and 1,000 eggs/plant) had no significant effect on
growth and yield of the cassava but amongst sole and legume-intercropped cassava
cultivars, significant differences were obtained. The feeder roots and stake/stem weights
of the sole cassava varieties were significantly higher (p>0.05) than their intercropped
mixtures with legumes. The highest tuber yield values were observed for NR8083 planted
sole (630g/plant) followed by TMS30572 intercropped with bambaranut (537g/plant).
Nematode-treated plants were significantly affected when they were destructively
sampled for damage symptoms on the cassava. Though no significant effect was
observed on yield, the significant nematode damage effects on the cassava indicate that
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the root-knot nematodes affect the outward appearance, the shelf life and storability of
the cassava products. The productivity of the legumes under cassava was significantly
different (p
ADAUGO, O (2021). Evaluation Of Cassava Cultivars And Intercropping With Legumes As An Integrated Nematode Pest Control Strategy In Cassava (Manihot Esculenta Crantz) Production. Afribary. Retrieved from https://tracking.afribary.com/works/evaluation-of-cassava-cultivars-and-intercropping-with-legumes-as-an-integrated-nematode-pest-control-strategy-in-cassava-manihot-esculenta-crantz-production
ADAUGO, OKOROCHA "Evaluation Of Cassava Cultivars And Intercropping With Legumes As An Integrated Nematode Pest Control Strategy In Cassava (Manihot Esculenta Crantz) Production" Afribary. Afribary, 20 May. 2021, https://tracking.afribary.com/works/evaluation-of-cassava-cultivars-and-intercropping-with-legumes-as-an-integrated-nematode-pest-control-strategy-in-cassava-manihot-esculenta-crantz-production. Accessed 23 Nov. 2024.
ADAUGO, OKOROCHA . "Evaluation Of Cassava Cultivars And Intercropping With Legumes As An Integrated Nematode Pest Control Strategy In Cassava (Manihot Esculenta Crantz) Production". Afribary, Afribary, 20 May. 2021. Web. 23 Nov. 2024. < https://tracking.afribary.com/works/evaluation-of-cassava-cultivars-and-intercropping-with-legumes-as-an-integrated-nematode-pest-control-strategy-in-cassava-manihot-esculenta-crantz-production >.
ADAUGO, OKOROCHA . "Evaluation Of Cassava Cultivars And Intercropping With Legumes As An Integrated Nematode Pest Control Strategy In Cassava (Manihot Esculenta Crantz) Production" Afribary (2021). Accessed November 23, 2024. https://tracking.afribary.com/works/evaluation-of-cassava-cultivars-and-intercropping-with-legumes-as-an-integrated-nematode-pest-control-strategy-in-cassava-manihot-esculenta-crantz-production