Retno Dyah Puspitarini
Jurusan Hama dan Penyakit Tanaman, Fakultas Pertanian, Universitas Brawijaya

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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 | 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.
EFFECT OF NATURAL HABITAT ON DIVERSITY OF HEMIPTERAN PREDATOR IN OIL PALM PLANTATION Rizali, Akhmad; Himawan, Toto; Fitriani, Ima; Rahardjo, Bambang Tri; Karindah, Sri; Puspitarini, Retno Dyah; Sahari, Bandung
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (490.923 KB) | DOI: 10.23960/j.hptt.11875-82

Abstract

Effect of Natural Habitat on Diversity of Hemipteran Predator in Oil Palm Plantation. Utillization of natural enemies in controlling oil palm pests still encounters obstacles, in particular, how natural enemies can survive and establish in oil palm plantations. The existence of natural habitats around oil palm plantations can allegedly support the occurence of natural enemies. The objective of this study was to investigate the effect of the presence of natural habitats on diversity of hemipteran predators in oil palm plantations. Field research was conducted in oil palm plantations located in Pangkalan Bun, Central Kalimantan. The plots were oil palm plantations with different distances from natural habitat i.e. near (less than 200 m), medium (about 2 km) and far (about 5 km). Each plot was selected six trees for fogging using insecticide with active ingredient lamda cyhalothrin. Based on research result, diversity of hemipteran predator in oil palm plantion was found 19 species belong to 2 families. The most dominant hemipteran predator was Sycanus sp., Eocanthecona sp. and Reduviidae sp5. The distance of oil palm plantation from natural habitat did not affect species richness, abundance and composition as well as recolonization of hemipteran predator in oil palm plantation. Abundance of hemipteran predator tend to decrease in different observation time, except Sycanus sp. Sycanus sp was likely has ability to rapidly recolonized and their occurrence were influenced by flowering vegetation in oil palm plantation.
BIOLOGICAL STUDY OF TWO SPOTTED SPIDER MITE Tetranychus sp. (ACARI: TETRANYCHIDAE) ON THREE LEAF PHASES OF MUNG BEAN AND ADZUKI BEAN FOR MITE MASS REARING Puspitarini, Retno Dyah; Satria, Arif Danu; Astuti, Ludji Pantja
AGRIVITA, Journal of Agricultural Science Vol 35, No 3 (2013)
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.v35i3.252

Abstract

Two-spotted spider mite (TSM) Tetranychus sp. is one of prey mites for phyotoseiid mite mass rearing.  Based on previous research that TSM population developed well on Mung bean (Vigna radiata) and Adzuki bean (V. angularis) as host plants, confirmed growth and development of TSM on both beans. Research was aimed to observe biology of TSM on three phases of Mung bean and Adzuki bean leaf such as at primary leaf unrolled completely (V1), at the 1st trifoliate unrolled completely (V2), and at the 2nd trifoliate unrolled completely (V3). Pre adult stadia, life cycle, male and female longevity, female fecundity of TSM, and trichome density were observed on petri dishes contained each leaf phase of beans.  Result showed that three leaf phases of beans did not influence significantly in all biological variables, except fecundity. TSM fecundity was the highest on V3 phase of Mung bean (86.90). Trichome density on Mung bean leaf surface per mm² was lower than Adzuki bean. Trichome density of upper leaf surface of V3 phase of Mung bean (10.53) and Adzuki bean  (3.07) were lower than V1 (13.20; 12.40) and V2 phase (6.20; 5.27). V3 phase of Mung bean was most suitable for TSM mass rearing.Key words:  fecundity, leaf phase, mass rearing, trichome density, two-spotted spider mite   
Comparison of Five Legumes as Host of Tetranychus sp. (Acari: Tetranychidae) Mass Rearing Puspitarini, Retno Dyah; Qomariyah, Nurul; Afandhi, Aminudin
AGRIVITA, Journal of Agricultural Science Vol 33, No 3 (2011)
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.v33i3.70

Abstract

Two spotted mite (TSM) Tetranychus sp. is often used as host for predator mite Phytoseiidae mass rearing. To obtain high population of TSM in short time, it must be reared in host plants that support optimum growth and development. The objective of this research was to observe population development of TSM on legumes such as mungbean (Vigna angularis), adzukibean (V. radiata), snapbean (Phaseolus vulgaris) and soybean (Glycine max) (wilis and anjasmoro cultivars) and to compare the growth of the legumes based on their fresh leaf weight and leaf area, and cost seed index (CSI). The results showed that mungbean was suitable host plant for TSM mass rearing because its population on this legume was the highest. Mungbean?s fresh leaf weight and leaf area was the highest. If TSM is reared in plant in greenhouse, CSI will become one of criteria for determining the host plant. Although CSI of mungbean was low because TSM population that was reared on it is the highest, the mungbean was the most suitable host plant for TSM growth and development. Another host plant that was suitable for TSM reared was adzukibean.Keywords: legumes, mass rearing, Tetranychus uritcae
SUITABLE COMBINATION BETWEEN BEAUVERIA BASSIANA (BALSAMO) VUILLEMIN AND FOUR PLANT LEAF EXTRACTS TO CONTROL SPODOPTERA LITURA (FABRICIUS) Afandhi, Aminudin; Pratiwi, Vivi Renna; Hadi, Muchammad Syamsul; Setiawan, Yogo; Puspitarini, Retno Dyah
AGRIVITA, Journal of Agricultural Science Vol 42, No 2 (2020): (IN PRESS)
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.v42i2.2678

Abstract

Lepidopteran pests such as S. litura might cause yield losses in many crops especially during pest outbreak. The combinations of microbial and botanical insecticides were expected to increase the effectivity in controlling the respected insect pest. This research aimed to evaluate the combination of plant extracts and B. bassiana to control S. litura. The compatibility of B. bassiana with different plant extracts such as Neem, Chinaberry, Mexican Sunflower and Lantana leaves was studied in the laboratory. The compatibility was evaluated based on B. bassiana colony growth, conidia density, conidia viability, and mortality of S. litura larvae. After 12 days after application (DAA), colony growth of B. bassiana was reduced by all plant extract treatments. For the mortality of S. litura, the combined mixture of B. bassiana and 0.25% Chinaberry extract resulted the maximum mortality rate (44%). After 12 and 15 DAA, the 0.25% Chinaberry showed the highest colony growth (3.93 and 4.37 cm). The most suitable treatment was B. bassiana with 0.25% Chinaberry that had the conidial density at 1.77 x 108 conidia/ml and conidial viability of 75.63% and can enhanced the mortality of S. litura larvae.