Zobrazeno 1 - 10
of 16
pro vyhledávání: '"M. N. Ukwungwu"'
Host range experiments and field sampling in Nigeria produced no evidence that African rice gall midge, Orseolia oryzivora Harris – Gagné, can develop on plants other than Oryza species. Sampling in three outbreak areas during 1994 showed that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6be5212d8b85716109e1d7f1d1c1a23c
http://doc.rero.ch/record/302611/files/S0007485399000747.pdf
http://doc.rero.ch/record/302611/files/S0007485399000747.pdf
Publikováno v:
American Journal of Experimental Agriculture. 1:486-493
Multi-locational rice evaluation trials were conducted in six locations across Nigeria to select promising varieties that could be cultivated by farmers. Entries were planted in a randomized complete block design replicated three times in each locati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::963d9545518573a29a687aad05177f96
https://doi.org/10.9734/ajea/2011/334
https://doi.org/10.9734/ajea/2011/334
Publikováno v:
Journal of Agricultural & Food Information. 5:51-66
Lowland ecology, which includes irrigated, rainfed, medium deep water and mangrove swamp environments, represents the major rice growing ecology in Nigeria. Varietal development that addresses specific problems has been carried out. The problems are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c741533d85f81ba5fdad1ba37835f6e
https://doi.org/10.1300/j108v05n01_08
https://doi.org/10.1300/j108v05n01_08
Autor:
M. N. Ukwungwu, S. Nacro, A. Adam, F. J. Abamu, D. Dakouo, S. I. Kamara, A. Hamadoun, C. T. Williams, O. Okhidievbie, Francis E. Nwilene
Publikováno v:
International Journal of Pest Management. 48:195-201
Considerable diversity was observed in the reactions of 20 rice genotypes to African rice gall midge (AfRGM) at five locations in four countries in West Africa. Of 14 Oryza sativa lines studied, TOS14519 had the lowest mean plant damage; TOG7106 had
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e10cecf32784ae3a2117d9ee44c60309
https://doi.org/10.1080/09670870110103890
https://doi.org/10.1080/09670870110103890
Publikováno v:
International Research Journal of Arts and Social Sciences.
Experiments were conducted at Edozhigi in the Southern Guinea Savanna zone of Nigeria between 2004 – 2007 on the use of P. scrobiculatum to enhance the biological control mechanism of Africa gall midge (AfRGM) by two naturally occurring parasitoids
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96fe59ef040e7960fdb97544be0f40e3
https://doi.org/10.14303/irjas.2014.044
https://doi.org/10.14303/irjas.2014.044
Publikováno v:
Journal of Applied Entomology. 125:341-349
A new method is described for screening rice germplasm for resistance to the African rice gall midge (AfRGM), Orseolia oryzivora, year-round under conditions similar to a severe natural outbreak, using an AfRGM culture to start infestation in a tunne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::663a84e5bab5e4bd8b6cffffd70ed2d3
https://doi.org/10.1046/j.1439-0418.2001.00534.x
https://doi.org/10.1046/j.1439-0418.2001.00534.x
Publikováno v:
International Journal of Pest Management. 45:117-124
Farmer-managed trials of the rice variety Cisadane were undertaken at 47 rainfed lowland sites around Abakaliki, south-east Nigeria, a major outbreak area of the African rice gall midge (ARGM). At each site a plot of Cisadane was grown alongside a co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::775ef30ccd24ebf340880c90b17c5cdc
https://doi.org/10.1080/096708799227905
https://doi.org/10.1080/096708799227905
Publikováno v:
Nigerian Food Journal; Vol 30, No 1 (2012)
In this study, grain physical and pasting properties of ofada rice cultivated in South-West Nigeria was evaluated using Standard Evaluation System (SES) for rice with the aim of providing basic information for brand development and utilization of ofa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15cc70088e29d8aae25845f8daf0f5f0
https://www.ajol.info/index.php/nifoj/article/view/83125
https://www.ajol.info/index.php/nifoj/article/view/83125
Autor:
Ravindra C. Joshi, M. N. Ukwungwu
Publikováno v:
Tropical Pest Management. 38:241-244
The African rice gall midge, Orseolia oryzivora Harris and Gagne has become one of the major biotic constraints to rice production in Nigeria. A survey of gall midge distribution in Nigeria showed that the pest was common in the savannah and forest z
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2c983b6249b532d78ac13f5395bd110
https://doi.org/10.1080/09670879209371700
https://doi.org/10.1080/09670879209371700
Autor:
M. N. Ukwungwu
Publikováno v:
International Journal of Tropical Insect Science. 11:639-647
Stem borers are major insect pests of rice in Africa. The utilization of varietal resistance in the management of these pests, has great economic potentials, as it involves no extra cost to the farmer and is also free from environmental hazards. Inve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fc772ce79a73d7f6229f81a50011e77
https://doi.org/10.1017/s1742758400021202
https://doi.org/10.1017/s1742758400021202