Manzoor Hussain*, Miloslav Zouhar and Pavel Ryšánek

...matophagous fungi on the population dynamics of this pest in sugar beets in laboratory and greenhouse trials. The fungi chosen were Arthrobotrys oligospora, Dactylella oviparasitica, Clonostachys rosea, Stropharia rugosoannulata, and Lecanicillium muscarium. In the laboratory experiment, S. rugosoannulata proved to be the most efficient biocontrol agent by parasitizing the maximum number of eggs, whereas D. oviparasitica appeared to be the least efficient...

Muhammad Basit1, Shafqat Saeed2, Mushtaq Ahmad Saleem3, Rana Zulfiqar4

 

Manzoor Hussain*, Miloslav Zouhar and Pavel Ryšánek

...enhouse to determine the population dynamics of the root knot nematode, Meloidogyne incognita, and the nematophagous fungus, Lecanicillium muscarium, on tomato. The nematode population densities were measured by determining the number of galls and egg masses, juveniles and eggs per root system, and reproduction factor. Four initial populations (Pi) (500, 1000, 1500, and 2000 eggs) mixed with antagonistic fungal conidia levels (1×103, 1×104, 1×...

John Gachohi, Simon Karanja, Salome Wanyoike, Nduhiu Gitahi, Salome Bukachi, Kenneth Ngure

...ed pathogenic Leptospira population dynamics simulation model. The model will be analyzed to assess the role of slum-based biotic (human and animal) and abiotic (soil, water and weather) habitats in Leptospira propagation. Influential habitats would serve as key targets for interventions. To achieve this aim, we have designed a pseudo-longitudinal survey to be undertaken for two years in Kibera slums in Nairobi city Kenya. Human and animal blood and urine samp...
Rashid Ahmed Khan* and Muhammed Naveed
...ar, 2015. Occurrence and population dynamics of the fruit fly were compared with meteorological factors, such as temperature, relative humidity and sunshine. The highest mean population of fruit fly remained at 499 in the month of August. It started to decline afterwards and remained at 348 in the month of September. The lowest population was recorded at 26, 3, 2 and 1 for November, December, January and February, respectively. The optimum monthly average temp...

Wajid Hasan1 and C. P. Singh2

Relationship between the population of mustard aphid,Lipaphis erysimi (Kaltenbach) and weather parameters on different cultivars of Indian mustard ( Brassica juncea L.)
...khand to investigate the population dynamics of the mustard aphid,Lipaphis erysimi Kalt. on different 42 cultivars of Indian mustard (B. juncea). The results revealed that the population of L. erysimi exhibited negative correlation with maximum and minimum temperature,rainfall, wind velocity, evaporation and positive with afternoon and morning relative humidity. The values of coefficient of determination (R ) were high (0.92 to 0.99), indicated that the popula...

1N. Johnson Singh, 2Amitava Konar and 3Palash Mondal

Incidence of aphids in different traps on potato in Gangetic plains of West Bengal
...t Bengal to evaluate the population dynamics of aphids with the help of yellow pan trap and yellow sticky trap. The population of aphid catches was quite lower in yellow pan trap than yellow sticky trap. Aphids were first observed in traps during third week of December and the population of pests gradually increased to reach the peak in second week of February in the first year of study (2006-07) while in second year of study (2007-08) the aphid population app...

1S. A. Khan and 2S. Jha

Effect of dates of sowing, moisture regimes, varieties and weather factors on incidences of aphid, Lipaphis erysimi (Kalt.) in rape and mustard
...imes to understand aphid population dynamics during different phases of growth of rainfed vis-à-vis irrigated rape and mustard crops, and work out relationships between aphid population and weather parameters for its forewarning. Results revealed that initial incidence times of aphid varied from 19 November to 3 December, depending upon dates of sowing done during 1 October to 5 November, which fall under recommended dates of sowing. In crops sown durin...

Goutam Samui and Shantanu Jha

Branch gall of mango (Oligotrophus mangiferae Keiffer) its bioecology and management
...p regarding the biology, population dynamics and management of this pest. Branch gall is a univoltine species. Emergence of adults from gall could be found from 2nd week of February, which continued up to 2nd week of March. Incubation, larval and pupal period lasted for 3-5 days, 315 days and 30-45 days, respectively. Eggs were laid singly throughout the young vegetative shoots by puncturing the tissue. A full grown larva was yellow in colour with a clear dark...

S. Patra, V.W. Dhote, SK F. Alam, B.C. Das, M.L. Chatterjee and A. Samanta

Population dynamics of major insect pests and their natural enemies on cabbage under new alluvial zone of West Bengal

Amitava Konar and N. Johnson Singh

Occurrence of aphids on various potato germplasms in eastern gangetic plains of West Bengal
...he incidence pattern and population dynamics of aphids on various potato germplasms. The common potato germplasms viz Kufri Chandramukhi, Kufri Jyoti, Kufri Jawhar along with three processing varieties like Kufri Chipsona-1, Kufri Chipsona-2 and Atlantic were screened against aphids. Potato seed tuber was planted by end of November following all standard agronomic practices except insecticide application. The aphid species viz. Myzus persicae (Sulzur) and Aphi...

S. Choudhury and S. Pal

Population dynamics of mustard aphid on different Brassica cultivars under terai agro-ecological conditions of West Bengal
...and 2003-04 to study the population dynamics of mustard aphid on seven popular rapeseed-mustard cultivars. The incidence of aphid commenced from 52nd to 2nd standard week with a very low population levels on all the cultivars. The aphid (Lipaphis erysimi) population attained peak level from 7th to 9th standard week. The correlation coefficients between aphid population and different abiotic factors revealed contradictory results. Except for a few instances the...
Erol Akkuzu1,*, Hidayet Güzel2 and Özkan Evcin1
...ic factors influence the population dynamics and severity of damage in a forest. This study investigated the effects of stand composition and site index of pine forests on Ips sexdentatus (Boerner) populations. Two main objectives of this study were a) to compare the effects of two different black pine stands of site index-I (high site productivity) and site index-III (low site productivity) and b) to compare the pure and mixed pine forests concerning t...
Muhammad Hannan Ahmed1, Muhammad Irfan Ullah1,*, Abu Bakar M. Raza1, M. Afzal1, A. Khaliq1, Yasir Iftikhar2 and Hafiz Muhammad Aatif3
...o play vital role in the population dynamics of sucking insect pest complex like jassid, aphid, thrips and mites. The present study was conducted on six cotton cultivars (3 Bt and 3 non-Bt) to monitor the population dynamics of thrips in relation to abiotic climatic factors. Interaction effect was found significant in Bt varieties but not for non-Bt cultivars. Average thrips population per leaf on...

Bashir Ahmad1*, Ahmad-Ur-Rahman Saljoqi1, Hayad Zada2, Shahid Sattar1, Toheed Iqbal3, Saddam Hussain1 and Muhammad Saeed4 

... and 2013 to investigate population dynamics and observe the impact of temperature, relative humidity and rainfall on population of Plutella xylostella (L.) in Cauliflower, Brassica oleracea crop at District Haripur of Khyber Pakhtunkhwa. Field studies results showed that the population of P. xylostella gradually increased from mid of July where the population was 2.1 and 2.0 larvae and pupae per plant in the year 2012 and 2013 respectively. The population inc...
Muhammad Arshad,1* Sajjad Ahmad1, Muhammad Sufyan1, Zain-ul Abdin1 and Sumaira Maqsood2
Ayesha Iftikhar1,*, Muhammad Asif Aziz1, Muhammad Naeem1, Munir Ahmad1 and Tariq Mukhtar2
...necessary to predict the population dynamics of this beetle against cotton mealy bug. Age-stage, two sex life tables of zigzag beetle were constructed at three different temperature regimes: 24 ± 0.5 °C and 27 ± 0.5 °C with 60-70% R.H. and ambient condition (32 ± 4 °C; 16-50% R.H.) with 14:10 h (L:D) photoperiod using cotton mealy bug as a host. According to the results, the immature duration and adult longevity were comparativ...

Abid Muhammad Shah1, Safdar Ali1*, Ijaz Ahmad2, Gulzada Wazir1, Obaidullah Shafique1, Muhammad Amir Hanif1, Bashir Ahmad Khan3 and Sumaira Zareen4 

...n wheat productivity and population dynamics of weeds. Different wheat sowing methods (S) were Broadcasting, Line sowing, Ridge sowing, Bed sowing and herbicides used were Ally Max, Clean wave, Starane M. and Buctril Super 60 Ec. The experiment was laid out in RCBD with split plot arrangement having three replications. Hand weeded (weed free), and weedy check (control) plots were also maintained for comparison in each replication. The recorded data were analyz...

 Azam Ali* and Amjad Farooq

...udy was to highlight the population dynamics of sucking pests on Bt cotton varieties (Lalazar, IUB-33, Sitara-009and MNH-988) and one non-Bt (NIAB) varieties in Multan Southern Punjab, Pakistan. During 2014 to 2016, eggs count and adult population of five different sucking pests (dusky bugs, jassid, thrips, white flies and mites) were recorded from sowing to harvesting seasons. Predators (Chrysoperla, Geocoris and Argiope) population was a...

Pakistan Journal of Zoology

August

Vol. 51, Iss. 4, Pages 1203-1598

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