Resistance of 360 var. of Phaseolus vulgaris to Empoasca kraemeri was evaluated in the greenhouse. Subsequent field evaluations were made of 30 promising var. when 30 days old. Seedlings in the greenhouse were infested with field-collected adults for 3 days, and resistance to 1st generation nymph...
Eskafi, F.M.
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Schoonhoven, Aart van
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[Comparison of greenhouse and field resistance of bean varieties to Empoasca kraemeri (Homoptera Cicadellidae)]
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Comparison of greenhouse and field resistance of bean varieties to Empoasca kraemeri (Homoptera Cicadellidae)
Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. was determined in the field on 14 bean cultivars after artificially induced infection. Isolate IG1-77 of the fungus was used to cause the infection, and evaluation was made using the CIAT disease severity scale of 1-5. The ...
Buruchara, Robin A.
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Gathuru, E.M.
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Mukunya, D.M.
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[Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars]
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Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars
Forty different cultivars of cassava were grown in unreplicated plots at a plant population of 20,000 plants/ha in fertile soil. Harvests were taken at 4, 6, 8, 10 and 12 mo after planting 18 varieties. The characteristics of the 2 highest yielding varieties, M Colombia 113 (66 tons/ha) and M Col...
Three varieties in one cassava trial and 5 in another were planted in a sytematic density experiment, which showed that optimum plant density for root yield changes with plant age. Some varieties showed a pronounced optimum plant population whereas others showed a flat-topped response curve. Redu...
Cock, James H.
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Wholey, D.W.
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Gutiérrez de las Casas, O.
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[Effects of spacing on cassava (Manihot esculenta)]
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Effects of spacing on cassava (Manihot esculenta)
Bean yield at 2 sites in Costa Rica (Turrialba and Parruas) was affected by the interactions of maize and bush bean cv. with cropping system (relay, row intercropping, and sole cropping). Maize cv. were grouped according to LAI and plant height. In Turrialba, a site with a severe weed problem, le...
Woolley, Jonathan N.
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Rodríguez, W.
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[Cultivar x cropping system interactions in relay and row intercropping of bush beans with different maize plant types]
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Cultivar x cropping system interactions in relay and row intercropping of bush beans with different maize plant types
This study assessed the growth and yield of two introduced cooking banana cultivars ‘Mpologoma’ and ‘NARITA 4’ relative to seven local highland cooking cultivars, across three sites in Rwanda, namely Karongi (1496 m a.s.l.), Gatore (1523 m a.s.l.) and Rwinzuki (1671 m a.s.l.). Data were obtained ...
Ndayitegeye, O.
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Blomme, Guy
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Ocimati, W.
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Crichton, R.
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Ntamwira, J.
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Muchunguzi, P.
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Asten, Piet J.A. van
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Bahati, L.
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Gaidashova, S.V.
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[Multi-locational evaluation of cooking banana cultivars ‘NARITA 4’ hybrid and ‘Mpologoma’ in Rwanda]
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Multi-locational evaluation of cooking banana cultivars ‘NARITA 4’ hybrid and ‘Mpologoma’ in Rwanda
A survey of BCMV in 6 municipalities of western Antioquia, Colombia, confirmed an epidemic in this region. However, planting with virus-free seed and the eradication of BCMV-infected plants during the first 30-40 days after planting were not effective in controlling the disease. Three BCMV-resist...
Tamayo Molano, Pablo J.
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Castaño J., Mauricio
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[Epidemia del virus del mosaico comun del frijol en el Oriente Antioqueno]
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Epidemia del virus del mosaico comun del frijol en el Oriente Antioqueno
Gisselquist, David
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Nash, John
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Pray, Carl
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[ Deregulating the Transfer of Agricultural Technology : Lessons from Bangladesh, India, Turkey, and Zimbabwe ]