scholarly journals PENGARUH APLIKASI ABAMEKTIN TERHADAP KEMELIMPAHAN LALAT PENGOROK DAUN DAN PARASITOIDNYA PADA PERTANAMAN KENTANG

2004 ◽  
Vol 4 (1) ◽  
pp. 18-22
Author(s):  
Purnomo Purnomo
Keyword(s):  
Leaf Damage ◽  
Leaf Sample ◽  
West Java ◽  
Plant Damage

Effect of application of abamectine on the abudance of leafminer flies and its parasitoids on potato fields. The objective of research was to investigate the effect of the application of abamectine insecticide on the infestation of potato leafminer and its parasitoid. The fields experiment was conducted on potato fields in Pangalengan – Bandung, West Java in 2000. The result showed that the abamectine-insecticide significantly reduce the plant damage intensities, the number of mining per plants, and the percentage of leaf damage. In addition, the application of abamectine insecticide was not significantly affected the level of parasitism and the number of parasitoid Hemiptarsenus varicornis (Girault) (Hymenoptera:Eulophidae) and Opius sp. (Hymenoptera: Braconidae) that were emerged from leaf sample. The abamectine insecticide has a good possibilities to be used as an alternative for controlling of the leafminers before another technology was found.

scholarly journals Intensitas serangan Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) pada pertanaman jagung di Kabupaten Garut dan Tasikmalaya, Jawa Barat

2020 ◽  
Vol 17 (3) ◽  
pp. 163
Author(s):  
Wara Asfiya ◽  
Vani Nur Oktaviany Subagyo ◽  
Anik Budhi Dharmayanthi ◽  
Fatimah Fatimah ◽  
Rina Rachmatiyah
Keyword(s):  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
The Other ◽  
Leaf Damage ◽  
Control Methods ◽  
West Java ◽  
Corn Production ◽  
Plant Damage ◽  
Lepidoptera Noctuidae ◽  
Attack Intensity

<p>The presence of <em>Spodoptera frugiperda</em> J.E. Smith or fall armyworm (FAW) have now detected in West Java. However, no information is available on their attack intensity even though the data is crucial for the implementation of appropriate control methods. The investigations were carried out in Garut (Limbangan, Wanaraja, dan Banyuresmi) and Tasikmalaya (Sukaratu) Regencies from 25 to 27 February 2020. At each location, 100 plants were selected for recording observations on leaf damage following the Davis Scale. The results showed the attack intensity in Wanaraja (34,78%), Banyuresmi (34.78%), and Sukaratu (39.89%) showed moderate damage. On the other hand, Limbangan one of the corn production center, showed high damage with the intensity of the pest up to 52.78%. The attack intensity of FAW tends to correlate with their attack level. This means that plant damage levels increasing at higher attack levels.</p>

scholarly journals Streamlining leaf damage rating scales for the fall armyworm on maize

2021 ◽  
Author(s):  
Stefan Toepfer ◽  
Patrick Fallet ◽  
Joelle Kajuga ◽  
Didace Bazagwira ◽  
Ishimwe Primitive Mukundwa ◽  
...  
Keyword(s):  
Rating Scales ◽  
Damage Index ◽  
Fall Armyworm ◽  
Leaf Damage ◽  
Plant Damage ◽  
Time Investment ◽  
Data Analyses ◽  
Parametric Data ◽  
Whole Plant ◽  
Field And Laboratory Conditions

AbstractThe fall armyworm (Spodoptera frugiperda, Lepidoptera: Noctuidae), which is native to the Americas, has recently invaded Africa and Asia. There, it has become a major pest of maize (Zea mays). The variety of methods used to assess feeding damage caused by its caterpillars makes it difficult to compare studies. In this paper, we aim at determining which leaf damage rating scales for fall armyworm are most consistently used for which purposes, might provide most possibilities for statistical analyses, and would be an acceptable compromise between detail and workload. We first conducted a literature review and then validated the most common scales under field and laboratory conditions. Common leaf damage scales are the nominal “yes-no damage scale” that only assesses damage incidence, as well as difficult-to-analyse ordinal scales which combine incidence and severity information such as the “Simple 1 to 5 whole plant damage scale”, “Davis’ 0 to 9 whorl & furl damage scale”, or “Williams’ 0 to 9 whole plant damage scale”. These scales have been adapted many times, are sometimes used incorrectly, or were wrongly cited. We therefore propose simplifications of some of these scales as well as a novel “0.0 to 4.0 fall armyworm leaf damage index” which improves precision and possibilities for parametric data analyses. We argue that the choice of a scale to use should depend on the desired level of detail, type of data analyses envisioned, and manageable time investment.

scholarly journals Implikasi keberadaan agens hayati Neochetina eichhorniae (Coleoptera: Curculionidae) terhadap eceng gondok

2017 ◽  
Vol 4 (1) ◽  
pp. 10
Author(s):  
Sapdi Sapdi ◽  
Damayanti Buchori ◽  
Utomo Kartosuwondo ◽  
S. Tjitrosemito ◽  
Bandung Sahari
Keyword(s):  
Biocontrol Agent ◽  
Growth Parameter ◽  
Leaf Damage ◽  
Freshwater Ecosystem ◽  
West Java ◽  
Neochetina Eichhorniae ◽  
The Impact

The effectiveness of Neochetina eichhorniae as a biocontrol agent of waterhyacinth was evaluated in West Java and DKI Jakarta. The objective of this research was to study the implication of the existence of N. eichhorniae on waterhyacinth. Research was conducted in several freshwater ecosystem infested by waterhyacinth and N. eichhorniae, including Cibinong and Lido lakes (Bogor District), Muara Angke Sanctuary (North Jakarta), and Citarum Hulu river (Purwakarta District), conducted during April to August 2004. The impact of N. eichhorniae on waterhyacinth was evaluated by leaf damage intensity and growth parameter of the plant. Results showed that there was no correlation between waterhyacinth and the occurrence of the N. eichhorniae. The population of N. eichhorniae adults was significantly low in any locations studied. Thus, the existence of the biocontrol agent can not result in decreasing of waterhyacinth population.

scholarly journals (270) Screeing for Melonworm Resistance in Squash and Pumpkins

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1027E-1028
Author(s):  
Jorge Pérez-Arocho ◽  
Linda Wessel-Beaver
Keyword(s):  
Leaf Damage ◽  
Control Group ◽  
Single Plant ◽  
Sources Of Resistance ◽  
Leaf Sample ◽  
Green Leaves ◽  
Upper Limit ◽  
Foliar Damage ◽  
Independent Culling ◽  
Selection Of

Melonworm (Diaphania hyalinata) is one of the most damaging pests of squash and pumpkin (Cucurbita sp.) in tropical/subtropical regions of the Americas. In order to identify sources of resistence to melonworm, we evaluated 345 accessions of C. moschata, including both tropical and temperate types, originating from the Americas, Europe, Asia, and Africa. C. argyrosperma (65 accessions) was also evaluated. Accessions were field tested in five single-plant complete blocks planted over a 9-month period in Isabela, P.R. Each plant was evaluated for foliar damage (0–4 scale) at 3 and 6 weeks. Larval counts were made on a five-leaf sample at 8 weeks. Accessions were classified for degree of leaf mottling and pubescence. Differences among accessions were found for foliar damage and number of larva, but ranking of accessions varied, depending on the criteria used to measure resistance. In order to establish independent culling levels, we considered the lower 30% of accessions for each trait. The upper limit was ≤0.42 for foliar damage at 3 weeks, ≤0.50 damage at 6 weeks, and ≤1.25larva/plant. This led to the selection of 34 resistant accessions. We used a similar technique to identify the most susceptible accessions. The susceptible accessions will be used as a control group when the 34 selections are further evaluated. Within C. moschata, accessions with either green leaves or less pubescence had less leaf damage and fewer larva than accessions with mottled leaves or more pubescence. As a group, C. argryosperma accessions were more susceptible, and nearly all had mottled leaves and little pubescence. Untested accessions with green leaves and/or little pubescence might yield additional sources of resistance to melonworm.

scholarly journals Serangan Hama Kelapa Promecotheca cumingii Baly

Buletin Palma ◽  
2016 ◽  
Vol 16 (2) ◽  
pp. 155
Author(s):  
MELDY L.A. HOSANG ◽  
N. E. LUMENTUT ◽  
A. A. LOLONG ◽  
. SALIM ◽  
J. S. WAROKKA
Keyword(s):  
Natural Enemies ◽  
Leaf Tissue ◽  
Farming System ◽  
Leaf Damage ◽  
Yield Losses ◽  
Font Size ◽  
Promising Alternative ◽  
Plant Damage ◽  
North Sulawesi ◽  
Outbreak Areas

<p><span style="font-size: medium;">ABSTRAK </span></p><p>Ledakan populasi hama Promecotheca cumingii Baly (= nucifera Maul.) (Coleoptera : Chrysomelidae) di Sulawesi Utara, pertama kali terjadi pada tahun 2015 di Kecamatan Modayag, Kabupaten Bolaang Mongondow Timur, Sulawesi Utara. Larva dari hama ini merusak daun dengan cara menggerek masuk kedalam lamina daun (leafminers = pengorok daun). Selama hidup larva dan pupa berada dalam liang gerekannya di daun. Serangga dewasa merusak dan meninggalkan bekas gigitan memanjang pada daun. Pada kerusakan berat, tanaman kelapa kelihatan seperti terbakar, sehingga dapat mengurangi produksi kelapa. Penelitian ini bertujuan untuk mempelajari tingkat kerusakan tanaman, populasi hama dan musuh alaminya. Dalam penelitian ini dipilih 3 lokasi di Kecamatan Modayag kemudian masing-masing lokasi dipilih 5 pohon contoh secara acak dalam areal serangan. Dari setiap pohon diambil satu pelepah daun di bagian tengah tajuk, selanjutnya diambil setiap anak daun ke-10 dan dihitung populasi larva, pupa, imago, dan musuh alami. Hasil penelitian menunjukkan populasi larva dan pupa dari hama P. cumingii di Modayag rata 2,2 individu/anak daun atau sekitar 517 individu/pelepah daun kelapa. Kerusakan hama pada kategori serangan berat dan sangat berat dapat mencapai 94,3% dari 140 tanaman contoh yang diamati dengan rata-rata kerusakan  antara 70 - 85%. Situasi serangan seperti ini, diperkirakan dapat menyebabkan penurunan produksi sampai 95%. Pemanfaatan musuh alami yang menginfeksi hama ini seperti cendawan entomopatogen Beauveria sp. dan Metarhizium sp. mempunyai peluang untuk menekan populasi hama ini dalam jangka panjang dan ramah lingkungan. Konsepsi pengendalian hama terpadu merupakan salah satu alternatif yang tepat dalam pengendalian hama P. cumingii di lapangan, dengan memanfaatkan semua komponen pengendalian yang sesuai, supaya dapat meningkatkan sistem usahatani kelapa yang lebih baik.</p><p>Kata kunci: Promecotheca cumingii, kerusakan tanaman, musuh alami.</p><p> </p><p> </p><p><span style="font-size: medium;">Attack of Coconut Pest Promecotheca cumingii Baly in East Bolaang Mongondow Regency, North Sulawesi Province </span></p><p><span style="font-size: medium;">A</span><span style="font-size: medium;">BSTRACT </span></p><p>Coconut pest Promecotheca cumingii Baly (= nucifera Maul.) (Coleoptera: Chrysomelidae) outbreaks in North Sulawesi, firstly occurred in 2015 in Modayag sub district, East Bolaang Mongondow Regency, North Sulawesi Province. Larvae of this leafminers chew and burrow into the leaf tissue. Larvae and pupae spend their entire life inside the leaflets. Adults feed on young leaflets and make characteristic thin longitudinal lines on the lower surfaces of the leaflets. Serious damage can cause scorched fronds and might lead to a significant coconut yield losses. The purposes of this research were to study palm damage, pest population and their natural enemies. Three locations were selected on the Modayag Sub District. In each location 5 palms were selected randomly in the area of the pest attack. At each palm one coconut frond was taken in the middle of the canopy, and the leaf damage, population of larvae, pupae, adult, and natural enemies were measured and counted on the leaflet samples that was taken at every 10t<sup>h</sup> leaflet.  The results showed that the  average  population  of  larvae  and  pupae  of  P.  cumingii  in  Modayag  was 2.2  insects/leaflet  or  about 517 insects/coconut frond.  The average plant damage was about 70% to 85%. 94.3% of the total of 140 plant samples observed was severely damage in the outbreak areas. The estimated coconut yield losses as a result of the given plant damage could reach 95%. Use of natural enemies associated with pest, such as entomopathogenic fungi Metarhizium and Beauveria, could provide long term control and environmentally friendly way. Integrated pest management is a promising alternative of P. cumingii control by utilizing all appropriate control components to improve the coconut farming system.</p>Keywords: Promecotheca cumingii, palm damage, natural enemies.

Pemakaian Pribahasa dan Kata Mutiara dalam Retorika Dakwah Para Da’i di Indonesia : Kajian Stalistika dalam Sastra Arab-Indonesia

2018 ◽  
Vol 24 (2) ◽  
pp. 325-345
Author(s):  
Yani'ah Wardhani
Keyword(s):  
Research Method ◽  
Word Meaning ◽  
West Java ◽  
Linguistic Style ◽  
Central Java ◽  
Collective Data ◽  
The Subject ◽  
Unique Style ◽  
Bahasa Indonesia ◽  
Educational Information

Da’wa that done by Da’i in Indonesia can not be detached from the efectivity of rethorical use. By shape the form of narration, choosing the nuances of the exact word meaning, also choosing the linguistic and interested word, will help da’i to get the interesting programmatic, so that can made and influence audiences to listen. The research method of this writing is descriptive qualitative analyziz. The data that used is a form of rethoric in the programmatic of oral da’wa of all da’i in Jakarta, West Java, and central Java. The research sources are the programmatic of oral da’wa that located in the published book and also recording. The collective data method are; reading, and repeatedly listening into the da’wa subject of da’i. Analyziz data technic are; understanding and interpretation. The result of this research is that in generally, the da’i used the literature linguistic style in delivering the subject of da’wa in shaping the proverb (amsal) and hikmah, whether came from Arabic or Indonesia. The linguistic that used by da’i, came from Al-Qur’an, Al-Hadist, wise word and from qaol Ulama dan Hukama.  The style of rethorical that used by KH.Zaenuddin MZ is to change belief, and in this term the da’i can change the attitude of audience. In a rethorical that used by Aa Gym is to inform, because many educational information that been accepted by aim to explain the things that has not known before. Meanwhile, the rethorical of UJE (Jefry alBukhory) has the unique style from other, because supported by his good voice while chanting the verse of Al-qur’an. Also, the rethorical style that used by Ahmad al Habsyi and Wijayanto that has similarity from the subject point, that used the beautiful style of locution by amtsal and hikmah---Dakwah yang dilakukan oleh para da’i di Indonesia tidak dapat terlepas dari efektifitas pemanfaatan retorika. Dengan menata bentuk-bentuk tuturan, memilih nuansa makna kata yang tepat serta memilih gaya bahasa dan kata mutiara  yang menarik akan lebih sempurna  bagi penutur untuk mendapatkan wacana yang menarik sehingga mampu mempengaruhi pendengar.  Metode penelitian yang digunakan adalah deskriptif kualitatif analisis. Data yang digunakan berupa bentuk retorika dalam wacana dakwah lisan para da’i di  DKI, Jawa Barat, dan Jawa tengah. Sumber data penelitian  berupa wacana dakwah lisan yang terdapat dalam buku-buku yang telah diterbitkan dan rekaman. Teknik pengumpulan data, meliputi: membaca dan mendengarkan secara berulang-ulang materi  dakwah para da’i. Teknik analisis data, meliputi: pemahaman,dan  interpretasi. Hasil temuan, bahwa secara umum para dai menggunakan gaya bahasa sastra  dalam menyampaikan materi dakwahnya dalam bentuk peribahasa (amsal) dan kata mutiara (hikmah) baik berasal dari bahasa Arab maupun bahasa Indonesia. Gaya bahasa yang digunakan oleh para dai mayoritas bersumber dari Al Qur’an, Al-Hadist, kata-kata bijak dari qaol Ulama dan Hukama.  Bentuk retorika yang sering digunakan oleh KH. Zaenuddin MZ adalah to change belief, dan dalam hal ini penceramah mampu mengubah sikap.  Sedangkan bentuk retorika yang digunakan oleh Aa Gym adalah to inform (pendidikan) karena banyak informasi pendidikan  yang diterima dengan bertujuan untuk menjelaskan hal- hal yang belum diketahui sebelumnya.  Retorika UJE memiliki gaya khas dari yang lainnya, karena didukung  suaranya yang merdu menjadi pengikat hati ketika melantunkan cinta Allah dan Rasulnya. Demikian juga bentuk retorika yang digunakan oleh Ahmad  al Habsyi dan ustadz Wijayanto ada kesamaan dari sisi materi, yaitu menggunakan style gaya bahasanya yang indah dengan amtsal dan Hikmah

Model Kaderisasi Anggota Partai Politik Islam dalam Membentuk Pemimpin Islami

2017 ◽  
Vol 2 (2) ◽  
pp. 103-114
Author(s):  
Muhammad Saiful Haq AlFaruqy ◽  
Ahmad Sarbini ◽  
Asep Iwan Setiawan
Keyword(s):  
Data Collection ◽  
Learning Process ◽  
Structured Interviews ◽  
The West ◽  
West Java ◽  
Qualitative Descriptive

Penelitian ini dilakukan untuk mengentahui tugas pokok Bidang Kaderisasi DPW PKS Jawa Barat, untuk mengetahui proses tahapan dan sistem model kaderisasi PKS yang marhalah (berjenjang), untuk mengetahui dan mendapatkan data dalam memebentuk kader pemimpin Islami Bidang Kaderisasi DPW PKS Jawa Barat. Metode yang digunakan dalam penelitian ini ialah deskrptif kualitatif dengan tekinik pengeumpulan data berupa wawancara terstrurktur, observasi, dan studi dokumentasi.. Hasil dari penelitian ini menunjukan bahwa model kaderisi dalam menciptakan pemimpin Islami melalui tahapan-tahapan pembinaan kader yang marhalah (berjenjang). Yaitu, Pertama, ta’lim proses pembelajaran yang mana bertujuan para kader diberikan kurikulum kaderisiasi partai. Kedua, Tandzhim yang mana setelah pembelajaran diharapkan para kader dapat mengasah dan mengimplementasikan hasil kurikulum kaderisasi. Ketiga, taqwin para kader harus dapat menginternalisasi ajaran Islam dalam partai maupun kehidupan berbangsa dan bernegara. This research was conducted to identify the main tasks of the West Java PKS DPW Cadre Field Division, to find out the stages and stages of the PKS cadre model model that is marhalah (tiered), to find out and obtain data in forming the Islamic leaders cadre of the West Java PKW DPW Cadre. The method used in this study is a qualitative descriptive with data collection techniques in the form of structured interviews, observations, and documentation studies. The results of this study indicate that the cadre model in creating Islamic leaders through the stages of training cadres who are marhalah (tiered). That is, First, ta'lim the learning process in which the cadres aim to be given a party cadre curriculum. Second, Tandzhim which after learning is expected that the cadres can hone and implement the results of the regeneration curriculum. Third, taqwin of cadres must be able to internalize the teachings of Islam in the party and the life of the nation and state.

Prinsip Kearifan Lokal dalam Pengembangan Strategi Kehumasan pada Pemerintah Daerah Kabupaten Bandung

2020 ◽  
Vol 4 (2) ◽  
pp. 229-248
Author(s):  
Betty Tresnawaty
Keyword(s):  
Public Relations ◽  
Local Knowledge ◽  
Case Study Approach ◽  
West Java ◽  
Study Approach ◽  
Positive Image ◽  
The Government ◽  
The Impact ◽  
Public Relations Strategy

Public Relations of the Bandung Regency Government realizes that its area has a lot of potential for various local wisdom and has a heterogeneous society. This study aims to explore and analyze the values of local knowledge in developing public relations strategies in the government of Bandung Regency, West Java province. This study uses a constructivist interpretive (subjective) paradigm through a case study approach. The results showed that the Bandung Regency Government runs its government based on local wisdom. Bandung Regency Public Relations utilizes local insight and the region's potential to develop a public relations strategy to build and maintain a positive image of Bandung Regency. The impact of this research is expected to become a source of new scientific references in the development of public relations strategies in every region of Indonesia, which is very rich with various philosophies.Humas Pemerintah Kabupaten Bandung menyadari wilayahnya memiliki banyak potensi kearifan lokal yang beragam, serta memiliki masyarakatnya yang heterogen. Penelitian ini bertujuan menggali dan menganalisis nilai-nilai kearifan lokal dalam pengembangan strategi kehumasan di pemerintahan Kabupaten Bandung provinsi Jawa Barat.  Penelitian ini menggunakan paradigma interpretif (subjektif) konstruktivis melalui pendekatan studi kasus. Hasil penelitian menunjukkan bahwa Pemerintah Kabupaten (Pemkab) Bandung menjalankan pemerintahannya berlandaskan pada kearifal lokal. Humas Pemkab Bandung memanfaatkan kearifan lokal dan potensi wilayahnya untuk mengembangkan strategi humas dalam membangun dan mempertahankan citra positif Kabupaten Bandung.Dampak penelitian ini diharapkan menjadi sumber rujukan ilmiah baru dalam pengembangan strategi kehumasan di setiap daerah Indonesia yang sangat kaya dengan beragam filosofi. 

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