A survey was conducted among okra farmers in two agro-ecologies (forest guinea savanna transition and moist semi-deciduous forest) of Ghana between August and December 2014, to assess their production decisions and awareness of the... more
A survey was conducted among okra farmers in two agro-ecologies (forest guinea savanna transition and moist semi-deciduous forest) of Ghana between August and December 2014, to assess their production decisions and awareness of the Meloidogyne species infection menace in okra. There were 240 respondents and more males (58%) than females (42%). Thirty nine percent (39%) of the farmers had no formal education and 48% had basic education. Approximately 56% had been cultivating okra for up to 10 years. Sixty four percent (64%) did not treat their okra seeds before sowing. Eighty five percent (85%) cultivated okra on commercial scale level (>3 acres). About 65% practiced sole cropping. Whilst 45, 79, 15 and 47% of the farmers responded positively to the Meloidogyne species infection awareness in okra in the Atwima Nwabiagya, Wenchi, Atebubu Amantin and Kintampo North Districts respectively, none was aware of the infection in the Ejura Sekyedumasi and Offinso North Districts. All, 61, 88, 86, 95 and 72% of the farmers in the Ejura Sekyedumasi, Kintampo North, Atebubu Amantin, Wenchi, Offinso North and Atwima Nwabiagya Districts respectively did not manage the infection. This was first survey study in
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
A survey of plantain farms was conducted in April 2012 at four locations in two districts of Ghana. The purpose was to identify plant parasitic nematodes (PPN) associated with plantain production in Ghana. The locations were Adomakokrom... more
A survey of plantain farms was conducted in April 2012 at four locations in two districts of Ghana. The purpose was to identify plant parasitic nematodes (PPN) associated with plantain production in Ghana. The locations were Adomakokrom and Kenyasi in the Brong Ahafo, Adanwomase and Mpobi in the Ashanti region. Demographic and sociological data of farmers, plantain root lesion scores, PPN populations per 200 cm3 soil and 5 g plantain roots were analyzed. Nematode damage to root at Adomakokrom, Adanwomase, Mpobi and Kenyasi were 50, 75, 75 and 50%, respectively. Five nematode species were recovered from the rhizosphere of plantain. The nematodes were in the order of importance; Pratylenchus coffeae, Meloidogyne spp., Rotylenchulus reniformis, Radopholus similis and Helicotylenchus multicintus. High populations of P. coffeae (803/200 cm3), H. multicintus (292/200 cm3) and R. reniformis (343/200 cm3) were extracted from soil samples at Adomakokrom, Adanwomase and Adanwomase respectivel...
Research Interests:
... Appianimaa Abrokwa and Mr Emmanuel Owusu Kyere of the Molecular and ... knot nematodes at Afari in the Atwima Nwabiagya district of Ashanti region of Ghana. A ... The root-knot nematodes are the most economically important... more
... Appianimaa Abrokwa and Mr Emmanuel Owusu Kyere of the Molecular and ... knot nematodes at Afari in the Atwima Nwabiagya district of Ashanti region of Ghana. A ... The root-knot nematodes are the most economically important (Williams-Woodward and Davis, 2001). ...
Research Interests:
Research Interests:
Root-knot nematode (Meloidogyne incognita) is an economically important phytoparasitic nematode species. In yam production, therefore, breeding for nematode resistance is an important environmentally friendly tool to manage root-knot... more
Root-knot nematode (Meloidogyne incognita) is an economically important phytoparasitic nematode species. In yam production, therefore, breeding for nematode resistance is an important environmentally friendly tool to manage root-knot nematodes damage. The aim of this study was to determine the reaction of 18 yam accessions to M. incognita inoculation under screen house conditions using single node vine cuttings. Vines of each accession were planted in sterilized soil and inoculated with 1000 infective juveniles of M. incognita. Resistance level of yam accessions were based on both galling index score and reproductive factor. There were a significant differences in final infective stage nematodes population, galling index, reproduction factor and yield of mini tuber among the accessions tested. Sixteen (89 %) of the accessions showed moderate resistance (GI ≥ 2, Rf ≤ 1) to the test pathogen with two accessions classified as susceptible. Accession TDr1515OP16/0030 recorded the highest...
Research Interests:
Research Interests:
Mango is one of the frequently cultivated seasonal fruit crops in several tropical and subtropical regions. It is consumed as whole fruits apart from serving as raw materials for most industries that are into mineral production. Mango... more
Mango is one of the frequently cultivated seasonal fruit crops in several tropical and subtropical regions. It is consumed as whole fruits apart from serving as raw materials for most industries that are into mineral production. Mango production is, however, constrained by diseases, pests, and poor post-harvest handling of fruits. Anthracnose disease, caused by Colletotrichum gloeosporioides Penz and Sacc, is one of the most important yields limiting constraint in mango production across the globe. The disease occurs in both the field and post-harvesting. In the field, it affects aboveground parts, such as the stem, branches, leaves, flowers, and fruits. Anthracnose disease reduces the shelve life and marketability of mango fruit. In Ghana, anthracnose disease is responsible for about 30% yield/fruit loss. Most farmers do not control it, although some have resorted to the application of various fungicides not registered for mango anthracnose disease management in Ghana. This chapter...
Research Interests:
Fall armyworm infestation poses a serious threat to the food security and livelihoods of smallholder maize farmers in Ghana. The most sustainable management approach is Integrated Pest Management. Entomopathogenic nematodes have the... more
Fall armyworm infestation poses a serious threat to the food security and livelihoods of smallholder maize farmers in Ghana. The most sustainable management approach is Integrated Pest Management. Entomopathogenic nematodes have the potential for inclusion in IPM to manage crop insect pests. The study aimed at finding a sustainable option to manage fall armyworms in maize. Maize plant rhizosphere soils were sampled from maize farms in 2019 for entomopathogenic nematodes. On an acre maize farm, 10 core soil samples were collected using soil augur at <20 cm soil depth and composited weighing 0.5 kg. Each composite soil sample was supplied with five 5 instar stage fall armyworm larvae and incubated (25°C; 85% RH) in a dark room. After 4 days, the fall armyworm larvae cadavers were removed from the soil for culturing and collection of infective entomopathogenic nematodes using modified White traps. A partitioned plant house accommodated each of three treatments: (T1) Supa ataka (Emam...
Research Interests:
The potentials of organic soil amendments (OSA) to control plant parasitic nematodes (PPN) infection in yam production were evaluated in Ghana. The ability of organic soil amendments; neem (Azadirachta indica A. Juss) seed powder, cocoa... more
The potentials of organic soil amendments (OSA) to control plant parasitic nematodes (PPN) infection in yam production were evaluated in Ghana. The ability of organic soil amendments; neem (Azadirachta indica A. Juss) seed powder, cocoa (Theobroma cacao L.) bean testa powder and cowitch (Mucuna pruriens L.) seed powder to suppress PPN in yam were compared to Fulan (a synthetic pesticide) and a non-treated control. The organic soil amendments suppressed Pratylenchus and Rotylenchulus soil population densities compared to the control. M. pruriens also reduced soil populations of Meloidogyne and Scutellonema with reductions similar to nematicide application. Only M. pruriens reduced population densities of plant parasitic nematodes in yam tubers compared to the control. There were no differences in yield. Mucuna pruriens treated plots yielded 32.1 t/ha while the control yielded 17.4 t/ha. In terms of relative yield, M. pruriens treated plots were 1.84 times higher than the control. The...
Research Interests:
Root knot nematodes represent important pathogens affecting global crop production due to their wide host range. The attack of root knot nematode on various vegetable crops leads to delayed maturity, reduced yields and quality of crop... more
Root knot nematodes represent important pathogens affecting global crop production due to their wide host range. The attack of root knot nematode on various vegetable crops leads to delayed maturity, reduced yields and quality of crop produce, high costs of production and therefore loss of income. However, their damage in most cases is overlooked and goes unnoticed by majority of farmers because the damage presents symptoms of drought and nutrient stress conditions. The limited knowledge among farmers about the problems associated with root knot nematodes and the inadequate management measures for curtailing the menace presents a major hindrance for vegetable crops protection. Management strategies should be applied in line with integrated pest management (IPM) practices to enhance adoption by farmers. Also, vegetable producers should be educated on the effects of root-knot nematodes.
Research Interests:
Osei, K, E. Otoo, Y, Danso, J. Adomako, A. Agyeman and J. S. Asante. 2013 Organic soil amendments in nematode management in yam production. Nematropica 43:78-82. The potentials of organic soil amendments (OSA) to control plant parasitic... more
Osei, K, E. Otoo, Y, Danso, J. Adomako, A. Agyeman and J. S. Asante. 2013 Organic soil amendments in nematode management in yam production. Nematropica 43:78-82. The potentials of organic soil amendments (OSA) to control plant parasitic nematodes (PPN) infection in yam production were evaluated in Ghana. The ability of organic soil amendments; neem (Azadirachta indica A. Juss) seed powder, cocoa (Theobroma cacao L.) bean testa powder and cowitch (Mucuna pruriens L.) seed powder to suppress PPN in yam were compared to Fulan (a synthetic pesticide) and a non-treated control. The organic soil amendments suppressed Pratylenchus and Rotylenchulus soil population densities compared to the control. M. pruriens also reduced soil populations of Meloidogyne and Scutellonema with reductions similar to nematicide application. Only M. pruriens reduced population densities of plant parasitic nematodes in yam tubers compared to the control. There were no differences in yield. Mucuna pruriens treat...
Objective: Usage of synthetic agro-chemicals continues to threaten the environment and mankind. This study was done to offer the peasant farmer with a sustainable nematode management option. Methodology and results : Mucuna pruriens L.,... more
Objective: Usage of synthetic agro-chemicals continues to threaten the environment and mankind. This study was done to offer the peasant farmer with a sustainable nematode management option. Methodology and results : Mucuna pruriens L., Tithonia diversifolia (Hemsl.) Gray, Solanum lycopersicum L. (control) and a clean fallow treatment were established in a randomized complete block design (RCBD). To evaluate their reaction to Meloidogyne spp., Pratylenchus brachyurus , Helicotylenchus multicintus , Rotylenchulus reniformis , Paratrichodorus minor and Tylenchulus semipenetrans : root gall index (RGI), population per 200 ml rhizosphere soil and one gram of root samples were analyzed. M. pruriens and T. diversifolia were antagonistic to Meloidogyne spp., P. brachyurus, H. multicintus and R. reniformis, but S. lycopersicum was a favorable host to the four nematode species. M. pruriens reduced populations of Meloidogyne spp. and P. brachyurus in root samples by 93 and 95% while T. divers...
Research Interests:
Ghana’s agricultural economy is largely dominated by the crop subsector with much focus on the production of tree, arable and vegetable crops. Nevertheless, Phytophthora spp. are major threat to the production of these crops contributing... more
Ghana’s agricultural economy is largely dominated by the crop subsector with much focus on the production of tree, arable and vegetable crops. Nevertheless, Phytophthora spp. are major threat to the production of these crops contributing significantly to yield reduction. In this review, the main focus will be to look at the threats the pathogen poses to production, economic importance of Phytophthora diseases, highlights some Phytophthora diseases with limited research in the country but have the potential of affecting crop production, management options and the prospect of developing and deploying biological control strategies considered environmentally friendlier and devoid of human health risks to reduce the effect of this pathogen on crop production as well as reducing the dependency on chemical control option.
Research Interests:
A survey study was conducted in six major okra growing Districts of Ghana between August and December 2014. It was to assess the prevalence, incidence, and severity of root-knot disease in okra incited by root-knot nematodes. Fifty-four... more
A survey study was conducted in six major okra growing Districts of Ghana between August and December 2014. It was to assess the prevalence, incidence, and severity of root-knot disease in okra incited by root-knot nematodes. Fifty-four sole okra fields were purposively selected from 18 localities for the study. On an acre okra farm, 25 representative plants were sampled in an N-shaped pattern and assessed for incidence and degree of knotting following a rating scale of 0 to 10. Seventy-six percent of the okra fields assessed were found to be positive for root-knot nematodes infection. Seventy-eight, 67, 67, 89, 100, and 56% root-knot nematodes infection prevalence were recorded in the Kintampo North, Atebubu Amantin, Wenchi, Ejura Sekyedumase, Offinso North, and Atwima Nwabiagya Districts, respectively. The highest infection incidence (95%) was recorded at Sentiatia in the Offinso North District while the lowest (22%), at Amponsakrom in the Wenchi District. Galling indices ranged between 5 and 8 across the Districts. The root-knot nematodes infestation menace in okra was common across the study area. Sustainable management strategies must be designed by crop protectionists and disseminated among okra farmers against the pest to boost okra production in Ghana and beyond.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Five cowpea varieties viz Asomdwe, Asetenapa, Hewale, Nhyira and Videza, were evaluated for their reaction to plant parasitic nematodes under natural infestation. Meloidogyne incognita, Pratylenchus brachyurus, and Rotylenchulus... more
Five cowpea varieties viz Asomdwe, Asetenapa, Hewale, Nhyira and Videza, were evaluated for their reaction to plant parasitic nematodes under natural infestation. Meloidogyne incognita, Pratylenchus brachyurus, and Rotylenchulus reniformis were isolated from the rhizosphere of the cowpea varieties although each of the varieties reacted differently to these nematode species. The highest number of M. incognita was recovered from the rhizosphere of Asomdwe which was 83% higher than Asetenapa which recorded the least number of M. incognita. Similarly, there was a significant difference (P<0.05) between R. reniformis juveniles recovered from the rhizosphere of Hewale and all the other varieties. There was however no significant differences in the number of P. brachyurus recovered although Nhyira recorded the highest. Two of the nematode generaMeloidogyne incognita and Pratylenchus brachyurus were extracted from the roots of the various varieties with varied population densities. The highest grain yield was recorded in Hewale. It out yielded Nhyira, Videza, Asomdwe and Asetenapa by (58, 49.8, 41.5 and 11.9)% respectively. Original Research Article Adomako et al.; IJPSS, 12(4): 1-5, 2016; Article no.IJPSS.27943 2
Research Interests:
Research Interests:
Research Interests:
Three popular yam varieties; Pona, Dente and Afebetua were evaluated for their reaction to plant parasitic nematodes infestation in three districts (Atebubu, Kintampo and Wenchi) of Ghana where yam is intensively cultivated. Plant... more
Three popular yam varieties; Pona, Dente and Afebetua were evaluated for their reaction to plant parasitic nematodes infestation in three districts (Atebubu, Kintampo and Wenchi) of Ghana where yam is intensively cultivated. Plant population/12 m 2 plot, nematode population/200 cm 3 rhizosphere soil, nematode population/5g tuber peels, tuber gall index and yield were analyzed using the mixed model (REML) approach in GenStat. Plant establishment of Pona at Wenchi was 63% higher than at Atebubu. Three nematodes; Meloidogyne spp., Pratylenchus coffeae and Scutellonema bradys were isolated from rhizosphere soils across the locations. Meloidogyne spp. population on Afebetua was 41 and 61% higher than on Dente at Kintampo and Wenchi respectively. Similarly, 64 and 89% more Pratylenchus coffeae were found on Afebetua than on Dente at Atebubu and Wenchi, respectively. Significantly higher (P < 0.05) populations of Meloidogyne spp. juveniles were extracted from tuber peels in Pona, Dente ...
Research Interests: Horticulture, Biology, Population, Rhizosphere, Infestation, and 3 moreNematode, Pratylenchus, and Gall
The potentials of organic soil amendments (OSA) to control plant parasitic nematodes (PPN) infection in yam powder, cocoa (Theobroma cacao L.) bean testa powder and cowitch (Mucuna pruriens L.) seed powder to suppress PPN in yam were... more
The potentials of organic soil amendments (OSA) to control plant parasitic nematodes (PPN) infection in yam powder, cocoa (Theobroma cacao L.) bean testa powder and cowitch (Mucuna pruriens L.) seed powder to suppress PPN in yam were compared to Fulan (a synthetic pesticide) and a non-treated control. The organic soil amendments suppressed Pratylenchus and Rotylenchulus soil population densities compared to the control. M. pruriens also reduced soil populations of Meloidogyne and Scutellonema with reductions similar to nematicide application. Only M. pruriens reduced population densities of plant parasitic nematodes in yam tubers compared to the control. There were no differences in yield. Mucuna pruriens treated plots yielded 32.1 t/ha while the control yielded 17.4 t/ha. In terms of relative yield, M. pruriens treated plots were 1.84 times higher than the control. The application of organic materials may be sufficient to keep some nematode populations below the economic threshold ...