ISSN:
1612-4766
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Description / Table of Contents:
Zusamenfassung Freilandanwendungen vonBacillus thuringiensis (Dipel 2X, 250 g/fed) gegen die Larven vonSpodoptera exigua bei Getreide und Sonnenblumen an zwei verschiedenen Orten in Ägypten zeigten 7 Tage danach einen Rückgang des Befalls an, Getreide bis auf 2,5% des Ausgangsbefalls und dadurch eine signifikant erhöhte Ernte. Das Carbamat Lannate (300 g/fed) führte zur vollständigen Vernichtung der Larven und zum größten Erntegewinn. Lannate, Dipel (250 g/fed) oder eine Mischung beider (je 150 g/fed) zeitigten hohe Mortalität der Larven, während Dipel allein (200 g/fed) nur eine geringe Wirkung hatte. Zehn
Notes:
Abstract Field applications usingBacillus thuringiensis (Dipel 2 X) againstSpodoptera exigua infesting corn and sunflower cultivations were carried out in two different localities in Egypt. The percentage of infested corn plants decreased to 2.5%, seven days after treatment with Dipel 2x, (250 g/fed) and the yield was significantly increased compared with untreated plots. The carbamate insecticide (Lannate) at 300 g/fed caused complete kill to the larvae and the highest yield was obtained. Application of Lannate, Dipel (250 g) or a combination of both (150 g/each/fed) caused a high reduction of the larvae existing in sunflower after seven days from application, while Dipel at 200 g/fed gave a lower effect. Ten days after application, the number of larvae and infested plants increased significantly in plots treated with Lannate alone, while plots treated with either Dipel (250 g) or Dipel combined with Lannate (150 g/each) still maintained a lower infestation. The estimated yield showed the highest increase in plots treated with Lannate followed by Dipel (250 g) and then a combination of both.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01909138
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