CDC Robin is a high-yielding, red cotyledon lentil (Lens culinaris Medik.) cultivar developed by the Crop development Centre, University of Saskatchewan, Saskatoon, Saskatchewan. It has brown seed coat colour suitable for the small red market class of lentil. It is intended for cultivation in all lentil-growing areas of western Canada. CDC Robin was issued registration #4990 on 4 October 1999 by the Variety Section, Plant Health and Plant Products Division, Canadian Food Inspection Agency. Key words: Lentil, cultivar description, Lens culinaris

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The inheritance of resistance to oat crown rust Puccinia coronata Cda. f. sp. avenae Eriks. was studied in four accessions of Avena sterilis L. Three of the accessions, CAV 4963, CAV 1358 and CAV 1376, originated from Israel, and one, CAV 1964, from Algeria. Seedling rust tests on F2 backcross families indicated that a single recessive gene, Pc-55, in CAV 4963 conditioned seedling resistance to 10 of 12 crown rust isolates tested. In CAV 1964, a single dominant gene Pc-56 conferred resistance in both the adult and seedling stages to all crown rust isolates tested except race 239, while a second dominant gene conditioned resistance to only two of the twelve cultures used. From adult and seedling tests it appeared that the resistance in CAV 1358 and CAV 1376 was conditioned by a number of recessive minor additive genes. The genes Pc-55 and Pc-56 are not allelic with the A. sterilis derived genes Pc-35, Pc-38, Pc-40, Pc-45, Pc-46, Pc-47, Pc-48, and Pc-50. Genes Pc-39 and Pc-55 are either very closely linked or allelic and Pc-56 is not closely linked to either Pc-39 or Pc-55. The usefulness of genes Pc-55 and Pc-56 was demonstrated in tests which showed that both genes were effective against 99.8 and 94.5%, respectively, of all crown rust cultures isolated in Canada in 1974 and 1975. The genes for seed color and awn character did not appear to be linked to the crown rust resistance genes. In CAV 4963, CAV 1358 and CAV 1376 the genes for grey color and wild type awns appeared to be linked with recombination values of about 2, 23 and 18%, respectively.

Bean anthracnose, caused by Colletotrichum lindemuthianum, can severely reduce bean yield and seed quality. A 2-year field study at two sites in southern Manitoba examined the effect of the timing of foliar applications of the fungicide pyraclostrobin (Headline ® 250 EC) on the control of bean anthracnose in navy bean (Phaseolus vulgaris) 'Navigator'. Single and (or) sequential applications of pyraclostrobin at a rate of 0.1 kg active ingredient (a.i.)/ha were made at four growth stages. Single applications of pyraclostrobin, at either 3 to 5 trifoliolate leave stage, early flowering (40% bloom), late flowering (80% bloom), or 10 days after flowering, reduced disease development in the crop canopy, but had inconsistent effects on pod infection, seed discoloration, and yield. Sequential applications of pyraclostrobin at the early and late flowering stages usually resulted in the lowest disease severity on all parts of the plant and in the highest yield. Sequential applications of pyraclostrobin at the late flowering stage and 10 days after flowering were less effective in reducing anthracnose severity and seed discoloration than the earlier sequentialapplication treatment. Both sequential-application treatments of pyraclostrobin had similar yields. Under Manitoba growing conditions, seed-borne infection by C. lindemuthianum resulted in yield reductions that ranged from 15.2% to 32.1% in the untreated bean plots.Résumé : L'anthracnose, causée par le Colletotrichum lindemuthianum, peut grandement réduire le rendement et la qualité de la graine de haricot. Une étude de 2 ans, menée à deux sites du sud du Manitoba, a permis d'examiner les effets du calendrier d'application foliaire de pyraclostrobine (Headline ® 250 EC), un fongicide, sur la lutte contre l'anthracnose du petit haricot blanc (Phaseolus vulgaris) 'Navigator'. Des applications uniques ou répétées de pyraclostrobine à la concentration de 0,1 kg de matière active à l'hectare ont été faites à quatre stades de développement. Des applications uniques de pyraclostrobine, que ce soit au stade de 3 à 5 feuilles trifoliolées, de début de floraison (40% de fleurs écloses), de fin de floraison (80% de fleurs écloses) ou de 10 jours après la floraison, ont réduit le développement de la maladie dans le couvert végétal, mais ont eu des effets variables sur l'infection des gousses, la décoloration des graines et le rendement. Des applications répétées de pyraclostrobine aux stades du début ou de fin de floraison ont généralement permis de réduire l'intensité de la maladie à son minimum sur toutes les parties de la plante et d'obtenir les rendements les plus élevés. Les applications répétées de pyraclostrobine aux stades de fin de floraison et de 10 jours après la floraison ont été moins efficaces à réduire l'intensité de l'anthracnose et la décoloration des graines que les applications répétées faites plus tôt. Les deux traitements avec des applications répétées ont procuré des rendements similaires. Dans les conditions de croissance du Manitoba, l'infection séminicole...

Nine experiments were conducted in Alberta and Manitoba between 1988 and 1991 to determine the effect of row spacing and seeding rates on safflower (Carthamus tinctorius L.) yield, oil content, test weight and maturity. Row spacings of 15 and 30 cm at Morden had little effect on yield, while in southern Alberta there was a tendency toward increased yields with narrow rows (23 cm) compared with wide rows (46 cm). Seeding rates of 32–40 kg ha−1 were required to obtain maximum seed yields. Oil content, test weight, and days to maturity were not consistently affected by row spacing or seeding rate. Key words:Carthamus, row spacings, seeding rates, yield, oil, test weight, maturity