Wyniki wyszukiwania

1

Słonecznica orężówka - groźna dla warzyw

100%

Beres P. K.

Hasło Ogrodnicze

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2012

|

nr 07

2

Słonecznica orężówka - realnym zagrożeniem

86%

Beres P. K.

Hasło Ogrodnicze

|

2016

|

nr 05

3

Efficacy of Tracer 240 SC and Steward 150 SC against first and second instar larvae of Helicoverpa armigera by using the leaf dip method

72%

Khan R. R., Zia K., Salman W., Salman B.

Journal of Plant Protection Research

|

2010

|

tom 50

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nr 4

Different concentrations of Steward 150 SC and Tracer 240 SC were tested under laboratory conditions against first and second instar larvae of Helicoverpa armigera. Results showed that these insecticides are very effective. The maximum mortality was observed by both insecticides and they can be used in the Integrated Plant Management (IPM) programme of any crop. For first instar, 300 ppm spinosad and 200 ppm indoxacarb can give complete mortality after 48 hours. For second instar larvae, 400 ppm spinosad can give maximum mortality (4.667), while 200 ppm of indoxacarb can give complete mortality after 48 hours.

4

Słonecznica orężówka na kukurydzy

72%

Beres P. K.

Kukurydza

|

2016

|

nr 2

5

Slonecznica orezowka [Helicoverpa armigera Hub.] - kwarantannowy szkodnik kukurydzy

71%

Beres P. K.

Progress in Plant Protection

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2008

|

tom 48

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nr 1

90-93

6

Economic threshold level and monitoring systems: reality and practicality in Helicoverpa armigera (Lepidoptera: Noctuidae)

58%

Chaturvedi I.

Electronic Journal of Polish Agricultural Universities. Series: Horticulture

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2007

|

tom 10

|

nr 2

7

Plant growth promoting rhizobacteria of cotton affecting the developmental stages of Helicoverpa armigera

58%

Vijayasamundeeswari A., Ladhalakshmi D., Sankaralingam A., Samiyappan R.

Journal of Plant Protection Research

|

2009

|

tom 49

|

nr 3

239-243

Rhizobacteria isolated from cotton roots exhibiting antagonism towards seedling blight and leaf blight of cotton were tested for their efficiency against the insect pest American bollworm (Helicoverpa armigera). The bioformulation developed using Bacillus subtilis (isolate DGL9) + chitin was found to be detrimental to the developmental stages of H. armigera (larva, pupa and adult) by causing larval mortality, pupal and adult malformation with reduced adult emergence. Generally, the larvae exhibited antifeeding behaviour when fed on bolls collected from rhizobacterial treatments. Hence, the developmental stages were altered leading to early pupation. Further, the efficacy of the isolate DGL9 was confirmed by culturing the bacteria in a suitable medium and incorporating the cell suspension and supernatant obtained form the broth culture in larval diet. The larvae fed to the diet exhibited defective developmental stages which was more significant in case of diet incorporated with supernatant. The percentage of pupal malformation, adult emergence and adult malformation was high at 96 h of incubation with the supernatant.

8

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Effect of Artemisia annua L. essential oil on toxicity, enzyme activities, and energy reserves of cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

58%

Mojarab-Mahboubkar M., Sendi J. J., Aliakbar A.

Journal of Plant Protection Research

|

2015

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tom 55

|

nr 4

The essential oil of Artemisia annua L., a weed collected from northern Iran, was studied for its toxicity and physiological aspects on 4th instar larva of the cotton bollworm Helicoverpa armigera Hübner in controlled conditions (26±1°C, 65±10% RH and 16 L : : 8 D h). The artificial diet was used as a medium for investigating the toxicity and the effect of LC10, LC30, LC50, and LC90 on the feeding efficiency of 4th instar larva. The essential oil in doses of LC10, LC30, LC50, and LC90 were estimated to be 2.01%, 3.86%, 6.07%, and 18.34%, respectively. The activity of α-amylase, protease, lipase, general esterases, and glutathione S-transferase and protein, triglyceride, glucose for treated larva were measured. The results showed that all of these parameters were decreased compared with the control. Hence, A. annua essential oil is suggested as a botanical for controlling this important pest of field crops.

9

Preliminary studies on insect pest incidence on tomato in Bama, Borno State, Nigeria

51%

Mailafiya D. M., Degri M. M., Maina Y. T., Gadzama U. N., Galadima I. B.

International Letters of Natural Sciences

|

2014

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tom 05

This study assessed the insect pest infestation of tomato during 2011 and 2012 in three localities namely Bula Kuliye, Kajeri and Soye of Bama Local Government Area, Borno State, Nigeria. Fifty plants were randomly checked per farmers’ field for insect pest recovery and count. Sampling was carried out in five to nine farmers’ fields per locality. With 38-52 %, 9-62 %, 13-39 % and 5-9 % species composition respectively across localities, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) followed by Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) were more predominant insect pests of tomato in these localities over Tetranychus sp. (Acari: Tetranichidae) and Spodoptera litoralis (Boisd.) (Lepidoptera: Noctuidae). Total proportion of infested tomato plants per farmers’ field ranged from 19-36 %, and was significantly higher in Bula Kuliye and Kajeri than in Soye. Total number of insect pests per plant/leave and bored fruits per farmers’ field fell between 2-5 and 21-35, and likewise, was higher in Bula Kuliye and Kajeri than in Soye. Although tomato plant infestation and fruit damage were found to be moderate or high in these localities, future studies on the bionomics or population dynamics of these insects remain essential for establishing their economic status.

Ograniczanie wyników

Słonecznica orężówka - groźna dla warzyw

Słonecznica orężówka - realnym zagrożeniem

Efficacy of Tracer 240 SC and Steward 150 SC against first and second instar larvae of Helicoverpa armigera by using the leaf dip method

Słonecznica orężówka na kukurydzy

Slonecznica orezowka [Helicoverpa armigera Hub.] - kwarantannowy szkodnik kukurydzy

Economic threshold level and monitoring systems: reality and practicality in Helicoverpa armigera (Lepidoptera: Noctuidae)

Plant growth promoting rhizobacteria of cotton affecting the developmental stages of Helicoverpa armigera

Effect of Artemisia annua L. essential oil on toxicity, enzyme activities, and energy reserves of cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Preliminary studies on insect pest incidence on tomato in Bama, Borno State, Nigeria