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ENVIRONMENTAL FACTORS AFFECTING PRODUCTIVITY OF TWO INDONESIAN VARIETIES OF BLACK PEPPER (PIPER NIGRUM L.) Yudiyanto, Yudiyanto; Rizali, Akhmad; Munif, Abdul; Setiadi, Dede; Qayim, Ibnul
AGRIVITA, Journal of Agricultural Science Vol 36, No 3 (2014)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v36i3.456

Abstract

Black pepper plantation area in Lampung province (the biggest producer area within Indonesia) has decreased from time to time, which might be related to unfavourable environmental condition. The aim of this study was to assess which environmental factors are positively or negatively correlated with productivity in particular yield of two local varieties of black pepper plant (Natar 1 and Natar 2) in Lampung province.  Two observational studies were carried out in the present study i.e. phenological development and productivity of black pepper productivity in related to various environmental factors. Our results showed that productivity of two varieties were significantly affected rainfall, light intensity and micro humidity. Dry matter yield was positively correlated with rainfall, both in Natar 1 and Natar 2. It was concluded that among environmental factors affecting productivity of black pepper, rainfall intensity was the most influencing factor with a positive relationship with the productivity.Keywords: Black pepper, climate, cultivar, environment, Indonesia
Agresi intraspesifik dan waktu penemuan makanan pada semut invasif Anoplolepis gracilipes di Kebun Raya Bogor Apriyadi, Rion; Harahap, Idham Sakti; Rizali, Akhmad; Buchori, Damayanti
Jurnal Entomologi Indonesia Vol 13, No 2 (2016): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1084.366 KB) | DOI: 10.5994/jei.13.2.89

Abstract

We studied the distribution of the Yellow Crazy Ant (Anoplolepis gracilipes) Smith (Hymenoptera: Formicidae) in Bogor Botanical Garden (BBG). Biological invasions by A. gracilipes can negatively impact other species. Individual nests of this ant can form supercolonies within which aggression is absent, intraspecific aggression occurs between workers from different supercolonies. The aim of this research was to study aggression between and resource discovery of different A. gracilipes supercolonies in BBG. Intraspecific aggression was calculated as three different aggression indices obtained by performing intercolonial arena encounters. Resource discovery was measured as time until honey baits in known distances to colony entrances were discovered. In 2013, we encountered five spatially distinct nest clusters of A. gracilipes in BBG, which cover ca. 25% of its area. Aggression tests showed that workers from KRB 1 were significantly more aggressive towards each other. The absence of intercolonial aggression between three of five nest clusters suggested that they actually belong to the same supercolony. On average, A. gracilipes needed less than 1 hour to find the food on bait plate in 20 m distance. We found 3 supercolonies of A. gracilipes which derived from 5 spatially distinct cluster of nests in BBG.
Interaksi tropik antara hama dan parasitoid pada pertanaman sayuran: faktor pembentuk dan implikasinya terhadap keefektifan parasitoid Nugraha, Muhamad Nurhuda; Buchori, Damayanti; Nurmansyah, Ali; Rizali, Akhmad
Jurnal Entomologi Indonesia Vol 11, No 2 (2014): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (936.428 KB) | DOI: 10.5994/jei.11.2.103

Abstract

The condition of agroecosystem may affect the diversity and effectiveness of parasitoid communities as natural enemies of insect pests. Agricultural intensification such as monoculture cultivation as well as application of insecticide could also cause declining to parasitoid diversity and ineffective performance of parasitoids in agricultural field. The objective of this research was to study trophic interaction between pests and parasitoids in different field of vegetable crops and to investigate the factors that determining those interactions as well as its implication on parasitoid effectiveness. Vegetable crop fields were grouped into three different categories i.e. based on the pattern of cultivation, diversity of vegetable crops around the field and age of plant. On each crop field, insects were sampled using 50 m of transect by collecting eggs, larvae and pupae of pests. In total, 15 species of pests and 15 species of parasitoids were recorded from eight species of vegetable crops. Based on the analysis, trophic interaction between pests and parasitoids were affected by cultivation system, condition of crop field (species diversity of crops in its surrounding) and age of vegetable plants. Although it was not significance, the effectiveness of parasitoids according to their parasitism level, tend to higher in trophic interaction that determined from crop field with organic systems and with diverse of crop plants.
Populasi Elaeidobius kamerunicus Faust (Coleoptera: Curculionidae) pada beberapa umur tanaman kelapa sawit Rahardjo, Bambang Tri; Rizali, Akhmad; Utami, Ika Putri; Karindah, Sri; Puspitarini, Retno Dyah; Sahari, Bandung
Jurnal Entomologi Indonesia Vol 15, No 1 (2018): March
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.541 KB) | DOI: 10.5994/jei.15.1.31

Abstract

Kumbang Elaeidobius kamerunicus Faust merupakan serangga polinator kelapa sawit yang hidup pada bunga jantan dan mengunjungi bunga betina untuk melakukan penyerbukan karena ketertarikan terhadap senyawa volatil yang dikeluarkan. Kuantitas fruit set kelapa sawit yang dihasilkan berhubungan dengan populasi E. kamerunicus pada suatu lahan. Penelitian ini bertujuan untuk mempelajari pengaruh umur tanaman kelapa sawit terhadap populasi kumbang E. kamerunicus. Penelitian dilakukan di perkebunan kelapa sawit yang terletak di Pangkalan Lada, Kotawaringin Barat, Kalimantan Tengah. Metode penelitian yang digunakan adalah berupa penghitungan populasi E. kamerunicus pada bunga jantan dan pemasangan sticky trap pada bunga betina. Plot pengamatan berukuran 7000 m2 (100 pohon) dengan variasi umur tanaman kelapa sawit, yaitu 6, 10, dan 16 tahun. Setiap plot dihitung jumlah bunga jantan dan betina yang mekar dan ditentukan beberapa bunga untuk pengukuran populasi E. kamerunicus yang dilakukan setiap bulan selama tiga bulan pengamatan. Hasil penelitian menunjukkan bahwa umur tanaman kelapa sawit berpengaruh terhadap populasi E. kamerunicus pada bunga jantan tapi tidak pada bunga betina. Semakin tua umur kelapa sawit, populasi E. kamerunicus pada bunga jantan semakin meningkat. Rasio jenis kelamin E. kamerunicus yang ditemukan pada bunga jantan dan betina kelapa sawit cenderung bias betina. Berdasarkan perbandingan populasi E. kamerunicus pada bunga jantan dan betina pada setiap plot diperoleh bahwa nilai kunjungan E. kamerunicus paling tinggi ditemukan pada umur kelapa sawit muda. Sebagai kesimpulan, pertambahan umur kelapa sawit mempengaruhi peningkatan populasi E. kamerunicus pada bunga jantan tapi persentase kunjungan ke bunga betina menjadi semakin menurun.
Pengaruh keberadaan habitat alami terhadap keanekaragaman dan kelimpahan serangga pengunjung bunga mentimun Susilawati, Susilawati; Buchori, Damayanti; Rizali, Akhmad; Pudjianto, Pudjianto
Jurnal Entomologi Indonesia Vol 14, No 3 (2017): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.589 KB) | DOI: 10.5994/jei.14.3.152

Abstract

Presence of insects in agricultural habitat is affected by several factors such as natural habitat. The objective of this research was to study the effect of natural habitat on diversity and abundance of flower-visiting insects in cucumber fields. Ecological observation was conducted in 12 cucumbers fields located in regencies of Bogor, Cianjur, and Sukabumi, West Java. Cucumber fields were categorized in two different distant form natural habitat i.e. near natural habitat (less than 200 m) and far from natural habitats (more than 1000 m). The observations of flower-visiting insects in cucumber fields were conducted by counting the number of flower-visiting insects that perched within 100 flowers in four different transects. The result showed that the presence of natural habitat affected species richness but not the abundance of flower-visiting insects in cucumber field. The dominant species of flower-visiting insects in cucumber fields were Aphis sp., Tapinoma sp. and Thrips parvispinus Karny, while the most dominant pollinator was Apis cerana Fabricius. The distance of natural habitat from farmland affected the presence of flower-visiting insects especially pollinator insects that provide important services on enhancing crop yield.
Ants in Tropical Urban Habitats: The Myrmecofauna in a Densely Populated Area of Bogor, West Java, Indonesia RIZALI, AKHMAD; BOS, MERIJN MARINUS; BUCHORI, DAMAYANTI; YAMANE, SEIKI; SCHULZE, CHRISTIAN HANSJOACHIM
HAYATI Journal of Biosciences Vol. 15 No. 2 (2008): June 2008
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (184.437 KB) | DOI: 10.4308/hjb.15.2.77

Abstract

Ants are the most abundant animals in tropical habitats and have been widely studied in natural and semi-natural tropical systems. However, species in urban tropical habitats remain poorly studied, despite their abundance and potentially important roles in urban ecosystems and pest dynamics. We investigated the ant fauna of Bogor and its surroundings to contribute to the characterization of the myrmecofauna of one of Southeast Asia’s most densely populated regions. Ants were collected both by hand collection and from honey baits in the most common habitats: garbage dumps, households, and home gardens. In total, 94 species were recorded, over two thirds of which occurred in home gardens, which underlines the importance of vegetated habitats for urban planning to support complex ant assemblages. Twelve sampled species are well-known as tramp species that occur primarily in human-dominated landscapes. The two tramp species Anoplolepis gracilipes and Paratrechina longicornis dominated ant assemblages in all locations and most habitat types. The assemblages of tramp species were affected by habitat type, whereas that of non tramp species were not. Forty-five species were also recorded in the Bogor Botanical Garden and five species are also known to be common in cacao agroforests. Hence, research in urban tropical habitats can increase our knowledge of the occurrence of ant species, allowing us to better assess the biodiversity and conservation potential of semi-natural habitats. Key words: ants, tramp species, invasive species, biotic homogenization, urban habitats
Keanekaragaman dan struktur komunitas semut pada perkebunan lada di Lampung Yudiyanto, Yudiyanto; Qayim, Ibnul; Munif, Abdul; Setiadi, Dede; Rizali, Akhmad
Jurnal Entomologi Indonesia Vol 11, No 2 (2014): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.252 KB) | DOI: 10.5994/jei.11.2.65

Abstract

The occurrence of ants in agricultural habitat is related to the availability of food resources as well as environmental condition for its nesting site. As predator, ants play an important role on controlling pest population in agricultural habitat. The objective of this research was to study the diversity of ants in pepper plantation. The research outcome can be used as basic information for cultivation management of pepper. Ecological observation was conducted in four regencies in Lampung Province with two selected plots on each regency. On each plot, ants were sampled using pitfall traps. In total, 28 ant species were recorded from pepper field in four regencies. Two species i.e. Anoplolepis gracilipes and Solenopsis geminataare well-known as tramp and invasive species. There is significantly different of ant species composition among regencies. The occurrence of ants in pepper plantationis probably affected by habitat condition surrounding pepper plantation and precipitation.
Keanekaragaman Semut pada Persawahan di Daerah Urban: Investigasi Pengaruh Habitat Sekitar dan Perbedaan Umur Tanaman Padi SETIANI, ENRI AGUS; RIZALI, AKHMAD; MOERFIAH, MOERFIAH; SAHARI, BANDUNG; BUCHORI, DAMAYANTI
Jurnal Entomologi Indonesia Vol 7, No 2 (2010): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.817 KB) | DOI: 10.5994/jei.7.2.88

Abstract

Agricultural intensification cause negative effect to insect diversity including beneficial insect such as natural enemies and pollinators. Habitat management through habitat heterogeneity is an alternative approach to protect insect diversity in agriculture area. In this study, we investigated the effect of habitat heterogeneity integrated with different age of crop plant in urban agricultural landscape to the ant diversity. The field research was conducted in agricultural area in Carang Pulang Village, Dramaga, Bogor. In around 6 ha area of rice field, grouped into four blocks which each block has different habitat condition and age of rice plant. In bunds of each block were put six pitfall traps with minimum distance 20 meter from each other. Ants were collected weekly from 6 until 12 weeks after planting to standardize the bunds condition. In total 22 species from 4 subfamilies of ants were recorded from this research. Iridomyrmex sp.01 and Odontoponera sp.01 are the common species which always found in each block and in different age of rice plant. There are no correlation between the distance of pitfall traps and similarity of ant species. In addition, habitat conditions surrounding rice field (block) significantly effect to the ant diversity. However, age of rice plant have no effect to the ant diversity.
Keanekaragaman dan peran fungsional serangga Ordo Coleoptera di area reklamasi pascatambang batubara di Berau, Kalimantan Timur Rahayu, Gilang Aditya; Buchori, Damayanti; Hindayana, Dadan; Rizali, Akhmad
Jurnal Entomologi Indonesia Vol 14, No 2 (2017): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1099.613 KB) | DOI: 10.5994/jei.14.2.97

Abstract

Reclamation has an important role in the recovery of mined land ecosystems and is expected to restore the diversity of insects such as Coleoptera. Reclamation process can change Coleoptera diversity and formed communities new of functional groups. The objective of this research was to study the diversity, functional role, and composition of the Coleoptera in the reclamation area. This ecological research was conducted in reclamation area of PT. Berau Coal in Binungan, Berau District, East Kalimantan. Several ages of reclamation area were selected for observation i.e. 2, 4, 6, 8 and 10 years and also natural forest as comparison. Insects were sampled using pitfall trap and malaise trap in a 100-meter transects for each age revegetation. The results showed that there is no difference in the diversity of Coleoptera between age of reclamation. Age of reclamation tend to affect the composition species and functional role of Coleoptera. Abundance of predatory Coleoptera show differences in different reclamation ages, while the abundance of other functional group (herbivor  detritivor and mycophagus) does not seen to be influenced by age of reclamation. Nevertheless, there is an increasing trend of Coleoptera abundance of herbivores and detritivor group with increasing age reclamation.
Effect of Five Types Inert Dust to Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) in Stored Rice Seeds Astuti, Ludji Pantja; Maula, Rohmatin; Rizali, Akhmad; Mario, Muhammad Bayu
The Journal of Experimental Life Science Vol 9, No 3 (2019)
Publisher : Graduate School, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1063.646 KB) | DOI: 10.21776/ub.jels.2019.009.03.04

Abstract

Rhyzopertha dominica (F.) is one of the primary pests in stored rice. Generally, pest control in the storage was done by spraying and fumigation using synthetic insecticide. The application of chemical insecticide using phosphine can cause resistant to insect pests and toxic to humans. Regarding the negative effect of insecticide application, the alternative control by using natural resources like inert dust is expected to be a good solution to control pests of stored products. This research was aimed to study the effectiveness of five inert dusts, which are: rice husks ash, volcanic ash, giant bamboo leaves ash, corncobs ash, coconut shells ash to adult mortality and the inhibition of population growth of R. dominica on stored rice seeds. The results showed that giant bamboo leaves at 8 g kg-1 caused 100% of mortality and faster than other inert dusts tested. Giant bamboo leaves and rice husks were more effective to suppress the number of eggs, larvae, pupae, and new adults (F1). Inert dust could decrease the hatchability of eggs, inhibit population growth, and decrease the weight of new adults (F1). The damage to the treated rice seeds was significantly lower than untreated rice seeds.Keywords: ash, control, inert dust, silica, stored product pest 
Co-Authors ABDUL MUNIF Abdul Rahim Abdullah Abdullah Ali Nurmansyah Anggara, I Made Tomi Anis Wahdi Ansari, M. Hafiz Apriyadi, Rion Bambang Tri Rahardjo BANDUNG SAHARI Banin, Ahmad CHRISTIAN HANSJOACHIM SCHULZE Clough, Yann Dadan Hindayana DAMAYANTI BUCHORI Danang Biyatmoko, Danang Dede Setiadi Eko Suhartono Evawaty S. Ulina, Evawaty S. Fachrianto, Fachrianto Fakhrur Razie Febriyanti, Eva Firman Firman Fitriani, Ima Frinsiska Rama, Yolla Habibie, Muhammad Irvani Hasriyanty Hasriyanty Heiriyani, Tuti HERMANU TRIWIDODO IBNUL QAYIM Idham Sakti Harahap Idiannor Mahyudin, Idiannor Ika Putri Utami Jainah Jainah, Jainah Khairunanissa, Khairunanissa Khamidah, Noor Lilik Budi Prasetyo Lizmah, Sumeinika Fitria Lizmah, Sumeinika Fitria Lubis, Jabbarsyah I Ludji Pantja Astuti Mahmud Mahmud Mario, Muhammad Bayu Masrun masrun Matilda, Filomena Maula, Rohmatin Maulidinor, Muhammad MERIJN MARINUS BOS Moerfiah Moerfiah Muhamad Nurhuda Nugraha Muhammad Ruslan Mutala'liah, Mutala'liah Nahdah, Fauziyyah Najmi, Lailatun Nina Herlina Noerdjito, Woro Anggraitoningsih Prabowo, Rommy Parcelino Pudjianto ., Pudjianto Pudjianto Pudjianto, Pudjianto Putri Pramudita, Julia Rahayu, Gilang Aditya Retno Dyah Puspitarini Salamiah Salamiah Sari, Adha Sari, Noorkomala SEIKI YAMANE SETIANI, ENRI AGUS Sholih, Muhammad Badrus SJAFRIDA MANUWOTO Sofyan, Antar Sri Karindah Sugiarto, Arifin Noor Susilawati, Susilawati Taufik Hidayat Tawakkal, Muhammad Iqbal Tita Widjayanti Toto Himawan Wahdah, Rabiatul Wulandani, Wenny Yudiyanto Yudiyanto Yusriadi Yusriadi