jbas
Abstract : Effect of Natural Enemy (Chrysoperla carnea Stephens) against Sucking Insect Pests of Okra
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Abstract: An experiment effect of natural enemy (Chrysoperla carnea Stephens.) against sucking insect pests of Okra was carried out at Latif Farm, Sindh Agriculture University, Tando Jam during 2014.The results showed that overall maximum mean population of jassids (1009.5 ± 78.12/plant) was recorded in pre-treatment treated plot followed by thrips (706.17 ± 34.26/plant), mites (572.5± 33.00/plant) and whiteflies (209.83 ± 19.76/plant) respectively. Whereas, the overall maximum mean population of jassids (1322.44 ± 8.6/plant6) was recorded in pre-treatment control plot, followed by thrips (828.05 ± 6.77/plant), mites (640.55 ± 5.95/plant) and whiteflies (267.38 ± 4.74/plant) respectively. However, the overall maximum mean of jassids (434.27 ± 4.91/plant) were recorded in post-treatment control plot, followed by thrips (278.11 ± 3.93/plant), mites (134.11 ± 2.63/plant) and whiteflies (18.83 ± 0.99/plant), respectively. The results further revealed that the statistical analysis of data through paired T-test between treated and control plot of jassids, whiteflies, thrips and mites showed significantly different at (P<0.05) level. Whereas, the statistical analysis of data through paired T-test between pre-treatment and post-treatment of jassids, whiteflies, thrips and mites also showed significantly different at (P <0.05) level. Keywords: Biological control, Chrysoperla carnea, Suckinginsect pestsa, Okra crop. |
Abstract : Analysis of Growth and Carcass Traits of Dumbi Sheep Breed Male Lambs Different Management Systems
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Abstract: Present research was performed on twelve male lambs of Dumbi sheep breed kept in 2 management systems at Faculty of Animal Husbandry and Veterinary Sciences, Department of Livestock Management, Sindh Agriculture University, Tandojam. Animals were divided into two different groups. A groups animal were kept in semi intensive with provision of open grazing and concentrates while, Bgroup animals were kept in intensive management system with provision of green fodder and concentrate. Study was performed till 8 weeks and lambs were observed weekly foraverage body weight and carcass characteristics of both groups were recorded. The results of current study showed that average body weight of group A was (8.33 kg)found significantly high (P>0.05) as compared to the group B (6.86 kg). Moreover carcass characteristics of Dumbi lamb was also observed higher in group A as compared group B. While during comparison of the economical values of both groups, it was observed that group A was found more economical than group B. It is concluded that semi-intensive management system was found better as compared to intensive management system. Keywords: Dumbi lamb, body growth, carcass weight, management systems. |
Abstract : A Review and Classification of Energy Efficient MAC Protocols for Underwater Wireless Sensor Network
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Abstract: Underwater wireless sensor network is an emerging wireless networking technology (UWSN). UWSN has various applications for example it can be used for monitoring seismic activities, underwater animal, pipeline etc. UWSN face challenges in their MAC later operations. Different energy efficient MAC protocols have been proposed for underwater wireless sensor networks (UWSN) to overcome the problem of propagation delays which is inherent in underwater acoustic networks. In this paper, we study the energy efficient MAC protocols including EE-MACU, R-MAC and T-Lohi. We classify UWSN MAC protocols into two broad categories contention free and contention based and we further categorize contention based protocol. We analyze and compare key UWSN MAC protocols based on certain parameters and suggest their suitability in various scenarios. Keywords: Underwater wireless sensor networks (UWSN), energy efficient MAC protocol, and performance analysis. |
Abstract : Persistence and Degradation of Imidacloprid in Wheat Crop
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Abstract: Present study was conducted to investigate the levels and persistence of imidacloprid residues in wheat grains and straw of field crop samples grown from treated seed and foliar application. Objective of the study was to assess the best practices that may be used to produce safe grains and straw. Residual uptake of imidacloprid was measured after seed treatments at four dosage levels of seed. Each sample of 25g treated seed was sown in a separate 5ft2 plot. The absorption of imidacloprid residues was investigated by spraying the crops with 1ml and 5ml of 6 mgmL-1 solution of 200SL Confidor (imidacloprid). The results helped in determining the maximum allowable limits of imidacloprid application (foliar or seed treatment) on wheat, which would prevent the residues from exceeding the MRL. The quantitative determination of imidacloprid suggested that the lowest seed treatment level (i.e. 0.015g/25g seed) may be used to produce a residues-free crop. Keywords: Imidacloprid, wheat grains, wheat straw, persistence, seed treatment, foliar application. |
