scholarly journals Tuba root (Derris elliptica Benth) flour extract concentration assay to control the corn cob borer (Helicoverpa armigera Hubn.)

2021 ◽  
Vol 715 (1) ◽  
pp. 012017
Author(s):  
R Rustam ◽  
D Salbiah ◽  
R Rismawanto ◽  
R Saputra
Keyword(s):  
Helicoverpa Armigera ◽  
Corn Cob ◽  
Extract Concentration ◽  
Helicoverpa Armígera ◽  
Cob Borer

scholarly journals POPULASI HAMA PENGGEREK TONGKOL JAGUNG Helicoverpa armigera (LEPIDOPTERA : NOCTUIDAE) DI KABUPATEN BONE BOLANGO PROVINSI GORONTALO

EUGENIA ◽  
2015 ◽  
Vol 21 (1) ◽  
Author(s):  
Ramlan Tuliabu ◽  
J. Pelealu ◽  
J. B. Kaligis ◽  
M. F. Dien
Keyword(s):  
Helicoverpa Armigera ◽  
Northern Region ◽  
Survey Method ◽  
Western Region ◽  
Eastern Region ◽  
Corn Cob ◽  
Pest Population ◽  
Helicoverpa Armígera ◽  
Lepidoptera Noctuidae ◽  
Cob Borer

ABSTRACT Helicoverpa armigera is one of the important pests in maize in Gorontalo province. The study aims to determine the population of corn cob borer Helicoverpa armigera has been implemented in Bolango Bone regency, Gorontalo Province from March to June 2011 study used a survey method based on the four zoning districts as follows: (1) the northern region districts Tilong Kabila, (2 ) Suwawa Western region districts namely, (3) the Eastern region districts Kabila, and (4) the South region, namely districts Bone Pante. The results showed that the average population of H. armigera cob borers on maize in Bone regency Bolango highest in the district is 3.75 Kabila Bone tail, then the tail 1.92 Tilongkabila districts, sub-districts and districts tail Kabila 1.83 Suwawa 1,4 tail. Keywords: Helicoverpa armigera, pest population

Field Efficiency of Certain Biopesticides and Neem Products Against Helicoverpa armigera (Hubner) on Chickpea (Cicer arietinumL.)

2019 ◽  
Vol 10 (01) ◽  
Author(s):  
Nihad H. Mutlag ◽  
Ameer S. A. Al-Haddad
Keyword(s):  
Helicoverpa Armigera ◽  
Block Design ◽  
Individual Treatment ◽  
Neem Oil ◽  
Larval Population ◽  
Neem Cake ◽  
Combination Treatments ◽  
Randomized Block Design ◽  
Helicoverpa Armígera ◽  
Nuclear Polyhedrosis

A field study was conducted to evaluate the efficiency of four microbial insecticides viz. Beauveria bassiana; HaNPV (Helicoverpa armigera Nuclear Polyhedrosis virus); (Bacillus thuringiensisvar.kurstaki 2 gm/L); HaNPV+Bt; neem oil; neem cake and D.D.V.P EC 76% @0.05% at Research Farm SHIATS,Allahabad during rabi season of 2011-2012. The experiment was laid out in randomized block design with seven treatment and replicated thrice. The observation larval populations of H. armigera were recorded one day before treatment was recorded at 3,7, and 10 days after treatments. The larva population of H. armigera appeared in the third week of February (8 the Standard week) and reached its peak of 14.65 larvae in first week of April and decline rapidly with maturation of crop. There was only one peak in the larval population observation in the 1st week. Bacillus thuringiensis was the most effective chemical by D.D.V.P.76%@0.05% . Among the microbial insecticides. HaNPV ,was the most effective followed by HaNPV+Bt and neem cake . The combination treatments were less effective than the individual treatment neem oil and B. bassiana were the least effective treatment in reducing the larval population of Heliverpa armigera.

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