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Researches regarding the influence of protection complexes used to control downy mildew Peronospora destructor Casp, on onion bulbs, onion neck rot - Botrytis allii Munn and onion maggot - Delia antiqua Meig affecting mean weight of onion bulbs


, : Researches regarding the influence of protection complexes used to control downy mildew Peronospora destructor Casp, on onion bulbs, onion neck rot - Botrytis allii Munn and onion maggot - Delia antiqua Meig affecting mean weight of onion bulbs. Lucrari Stiintifice: B, Horticultura

This study evaluated the influence of different protection complexes against downy mildew (<i>Peronospora destructor</i>), onion neck rot (<i>Botrytis allii</i>) and onion maggot (<i>Delia antiqua</i>) on the mean weight of onion bulbs. Variant 6 (Ridomil Gold Plus 42.5 WP at 0.3% + Mospilan 20 SP at 0.025%) and Variant 5 (Ridomil Gold MZ 68 at 0.25% + Victenon 50 WP at 0.075%) gave the best control of the two fungal diseases and the insect pest.


Accession: 033202170

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Related references

Viranyi F., 1974: Studies on the biology and ecology of onion downy mildew peronospora destructor in hungary part 1 over wintering of the pathogen in onion bulbs. Acta Phytopathologica Academiae Scientiarum Hungaricae 9(3-4): 311-314

Viranyi, F., 1974: Studies on the biology and ecology of onion downy mildew (Peronospora destructor (Berk.) Fries) in Hungary. I. Overwintering of the pathogen in onion bulbs. P. destructor mycelia overwintering in onion bulbs were found to be the main sources of primary infection in Hungary. Even on heavily infected onion fields grown for seed, the highest percentage of plants with systemic symptoms remained under 1%....

Robbins P.S.; Hessney M.L.; Eckenrode C.J., 1991: Onion allium cepa buccaneer onion maggot delia antiqua meigen onion maggot control using pelleted seed treatment 1990. Insecticide & Acaricide Tests : 88-89

Robbins P.S.; Hessney M.L.; Eckenrode C.J., 1991: Onion allium cepa buccaneer onion maggot delia antiqua meigen onion maggot control 1990. Insecticide & Acaricide Tests : 88

Vitanov, M., 1972: Influence of overshadowing in obtaining onion bulbs systemically infected with onion downy mildew

Vitanov, M.; Angelov, D., 1974: Possibilities of the control of Peronospora destructor (Berk.) Casp. by insolating onion bulbs. Following harvest, onion bulbs grown for seed should be exposed to the sun for 12 days. On some days bulbs may be heated to >41 deg C for >4 h, conditions favouring the destruction of any P. destructor mycelium inside. No adverse effects on...

Kritzman, G., 1983: Identification of latent Botrytis allii Munn in onion bulbs. Samples of bulbs were incubated for 2 days at 4 deg C, followed by 16 days at 15 deg . The bulbs were then bisected longitudinally and each half stained with an alcoholic sol. of bromocresol green and methyl red. Healthy tissues stained green and...

Tolpa, S.; Kukla, S.; Noga, H., 1976: The control of downy mildew of onion (Peronospora destructor (Berk.) Casp.) with preparations from peat. Peat preparations were more effective than Dithane M-45 [mancozeb]. The best results were obtained with 5% peat-biostimulator and 5% peat-bioinhibitor.

Tolpa, S.K.kla, S.N.ga, H., 1977: Control of the downy mildew of onion (Peronospora destructor (Berk.) Casp.) using preparations derived from peat. Roczniki nauk rolniczych Polish agricultural annual Seria E Ochrona roslin: ub 1977), 6 (2) 239-252

Yano, T.; Mori, K.; Kitazima, T.; Ishibashi, Y.; Dei, Y., 1989: Effects of continuous cropping of onion plants on the post-harvest rotting of onion bulbs. 2. The amounts of inorganic substances and sugars in onion bulbs. In experiments carried out in 1985-86, onions were harvested from late May to early Sep. from fields of heavy clay soil, on which onions were previously grown for a period of up to 20 years, and bulb inorganic composition and sugar contents were i...