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All Journal Agroland : Jurnal Ilmu-Ilmu Pertanian Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Hortikultura Jurnal Pembangunan dan Alam Lestari AGRIVITA, Journal of Agricultural Science Jurnal HPT (Hama Penyakit Tumbuhan)
Gatot Mudjiono
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science

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Study of Arthropod Communities in A Virginia Tobacco Agro-Ecosystem Ruth Stella Thei; Abdul Latief Abadi; Gatot Mudjiono; Didik Suprayogo
Journal of Tropical Life Science Vol. 3 No. 2 (2013)
Publisher : Journal of Tropical Life Science

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Abstract

The cultivation of tobacco is one of users of agro-chemical substances such as insecticides, herbi-cides, defoliants, and fertilizers among other food crops and plants with high economical value. The use of these chemicals may bring negative effects regarding the richness and abundance of arthropods. The study of arthropod community in the Virginia tobacco ecosystem was carried out in Central Lombok, West Nusa Tenggara Province, during the 2010 plantation year. It was aimed at finding the composition, structure, and dynamic of the arthropod diversity around the tobacco field. Samples were obtained by using trapping techniques (pitfall traps, yellow-pan traps, and sweep net). The number of arthropods found in Virginia tobacco field are 69, consisting of 65 species of insects (belonging to 46 families and 8 orders) and 4 species of spiders (belonging to 4 families). The majority of insects found was Hymenoptera, dominated by bees. Based on the ecological functions, the major group of arthro-pods documented was phytophagous (20 species), mostly Coleoptera and Orthoptera. Yet, the number of predators was relatively more abundant than that of the phytophagous. The number of kinds of ar-thropods commonly interacting around the field fluctuated during the growing period, while in the cultivation period the number decreased. The diversity of the species (H) and the ratio of abundance of the natural enemies and phytophagous in the field was high.
The Influence of Environmental Factors to The Abundance of Scales (Hemiptera: Diaspididae) Population on Apple Crop Khojin Supriadi; Gatot Mudjiono; Abdul Latief Abadi; Sri Karindah
Journal of Tropical Life Science Vol. 5 No. 1 (2015)
Publisher : Journal of Tropical Life Science

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This research aims to assess the environmental factors that affect the abundance of scales populations on the apple crop. The study was conducted in July 2012 to January 2013. The study was conducted at two sites with different altitude. Bumiaji village's altitude is ±900 m and Tulungrejo village's altitude is ±1,515 m asl. Multiple linear regression analysis was conducted to determine the environmental factors that affect the abundance of scales populations on the apple crop. Based on the results of the regression analysis, air temperature and humidity affect the abundance of scales populations in Binangun while rainfall and long solar radiation have no effect. Scales population abundance of the apple crop in Binangun was influenced by air temperature and humidity one week before. Based on the results of the regression analysis, air temperature, air humidity and rainfall affect the abun dance of scales population in Tulungrejo while long solar radiation has no effect. Scales population abundance ofthe apple crop in Tulungrejo was affected by air temperature two weeks before, while humidity and rainfall were affected one week before. The higher air temperature scales, flea population level will increase. And the higherrelative humidity, scales population levels will increase.
Co-Authors A. Latief Abadi Abdul Latief Abadi Akhmad Rizali Aminudin Afandhi Arif Hermanto Bachtiar Rachmad Sugiyono Didik Suprayogo Dycka Dwi Saputra Frelyta Ainuz Zahro' Khojin Supriadi Lia Ni’matul Ulya Mochamad Syarief Moh. Hibban Toana nFN Harwanto Retno Dyah Puspitarini Rina Rachmawati Rudi Cahyo Wicaksono Ruth Stella Petrunella Thei S. Karindah Sama’ Iradat Tito Sri Karindah Toto Himawan Yulianto Nugroho