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Journal : Jurnal Pengendalian Hayati

Farmer Percieve on Leafminer Problems in the Bromo Highland Area Of East Java Hari PURNOMO
Jurnal Pengendalian Hayati Vol 1 No 2 (2008)
Publisher : Fakultas Pertanian Universitas Jember

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Abstract

Liriomyza huidobrensis Blanchard was originally described in Argentina and has now been found worldwide. In Indonesia, this species was first recorded on potato in 1994 in Bogor, West Java. The failure of quarantine procedure is blamed for introduction of LMF worldwide. In most cases, cultivation of vegetables such as potato as a cash crop has relied heavily on the use of pesticides, often excessively so with growers frequently spraying on a calendar basis, irrespective of the level of the pest population. Surveys have been conducted on vegetables farmers in the Bromo highlands region of East Java, Indonesia on the perceived importance of L. huidobrensis and the control methods adopted. the results of the survey suggested that LMF infestation in the Bromo Highlands Region has become a very serious problem, almost certainly due to the misuse of insecticides
Patogenisitas Jamur Entomopatogen Aschersonia sp. Sebagai Pengendalian Hama Kutu Sisik Citricola Coccus pseudomagnoliarium (Kuw.) (Homoptera : Coccidae) Pada Tanaman Jeruk Barep Seto Pramono; Hari Purnomo
Jurnal Pengendalian Hayati Vol 2 No 1 (2019)
Publisher : Fakultas Pertanian Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jph.v2i1.17135

Abstract

One of the pests that attack the citrus plant is the scales of the citricola scales Coccus pseudomagnoliarium (Homoptera: Coccidae) which attack the branches and branches of the orange plant. This research aims to determine the level of pathogenicity of Aschersonia sp. in controlling C. pseudomagnoliarium pests in citrus plants. This research was conducted by knowing the level of pathogenicity of Aschersonia sp. in C. pseudomagnoliarium pests based on observations of C. pseudomagnoliarium nymph mortality variables, mycosis, mummification, and LC50 values (Lethal Concentration 50) and LT50 (Lethal Time 50). This research can provide information on the pathogenicity of Aschersonia sp. against C. pseudomagnoliarium in citrus plants. The highest percentage of mortality occurred at the treatment density of 109 spores/ml with a value of 77.50% and the lowest percentage of mortality occurred at the treatment density of 105 spores/ml with a value of 15.00%. LC values indicate that the spores density of 2.8 × 107 spores/ml has been able to kill 50% of the test insects, while to kill 90% of the test insects requires a density of 2.4 × 1010 spores/ml and to kill 95% of the test insects requires a density 1.6 × 1011 spores/ml. The LT50 calculation results show that the 1 × 109 spore density treatment has the smallest LT50 value of 3.11 days.
Uji Alat Augmentasi dan Konservasi Parasitoid Telur Kepik Hijau (Nezara viridula L.) pada Tanaman Kedelai (Glycine max L.) Zulfa Nuril Hikmah; Hari Purnomo
Jurnal Pengendalian Hayati Vol 3 No 1 (2020)
Publisher : Fakultas Pertanian Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jph.v3i1.17145

Abstract

Soybean pod damage caused by N. viridula reached 61.37% of the total pods and 61.67% of the total seeds attacked. Efforts were made, namely the application of chemical insecticides made from active chlorpyrifos which can reduce the population of N. viridula to reach 57.4% and the insecticides made from deltamerin which are reducing the population by 51.6%. Control is needed that can reduce the negative effects caused by chemical insecticides, one of which is mechanical control. Mechanical control can be done one of them with augmentation and conservation tools. the research is by taking the eggs of N. viridula in the field and laying the eggs in an augmentation and conservation tool with several treatments of different filter cloth diameters, 0.1 mm; 0.3 mm; 0.2 mm; and 0.6 mm. Observations were made by looking at and counting the number of parasitoids that were able to pass through the filter cloth and those that did not pass through the filter cloth, followed by identification of the species of the parasitoid that was obtained. The results showed that the parasitoids were able to escape in all treatments but with varying amounts. The difference in number can be influenced by the presence of parasitoids in the field and the level of parasitoid parasitation. Likewise with Trichogramma sp also able to pass on all treatments. Therefore, the most suitable treatment is treatment with a 0.1 mm diameter filter cloth. The identified parasites were T. rowani and T. podisi