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All Journal Jurnal Sains Teh dan Kina CEFARS : JURNAL AGRIBISNIS DAN PENGEMBANGAN WILAYAH Jurnal Agribisnis dan Pengembangan Wilayah
Merry Antralina
Fakultas Pertanian Universitas Bale Bandung
Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Influence of biological control agents Helicoverpa armigera nuclear polyhedrosis virus (HaNPV) on mortality twig caterpillar (Ectropis bhurmitra Wlk.) Santoso, Joko; Antralina, Merry
Jurnal Penelitian Teh dan Kina Vol 14, No 2 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.876 KB) | DOI: 10.22302/pptk.jur.jptk.v14i2.9

Abstract

The objective of this research was evaluate effectiveness of Helicoverpa armigera Nuclear Virus Polyhedrosis virus (HaNPV) on twig caterpillar (Ectropis bhurmitra Wlk) mortality. The experiment was conducted at the Research Institute for Tea and Cinchona, Gambung, Bandung, elevation of + 1.300 m asl, from March 2011 till June of 2011. A completely randomized design was used with 12 treatments and replicated twice. Aplication of four level concentrations of HaNPV on three stadia of the twig caterpillar larvae were performed. The HaNPV concentrations were 4 x 106 PIB/mI, 4 x 104 PIB/ml, 4 x 102 PIB/ml and 0 PIB/ml, and stadia of the twig caterpillar larvae were 2, 3, and 4. The results indicated that direct application of HaNPV on twig caterpillar larvae had similar effect in mortality of the larvae, either in the laboratorium or in the greenhouse, with level of mortality was 70% within four to ten days periode. Laboratory expe­rimentation indicated that 4 x 102 PIB/ml concentration of HaNPV applied directly on stadia 3 and 4 was effective in suppressing Ectropis bhurmitra Wlk. larva population while for larvae stadium 2 the effective concentration was 4 x 104 PIB/ml. In greenhouse experiment revealed that 4 x 102 PIB/ml concentration of HaNPV was effective in suppressing larvae of stadium 2 and stadium 4, while until the end of the experiment no indication of maksimum mortality in stadium 3 population.
The Influence of biofertilizer on abundance of Nitrogen Fixing bacteria and growth of Chinchona Plants (Chinchona ledreriana.) Clone Cib. 5 Antralina, Merry; Santoso, Joko; Kania, Dewi
Jurnal Penelitian Teh dan Kina Vol 18, No 2 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (445.018 KB) | DOI: 10.22302/pptk.jur.jptk.v18i2.57

Abstract

The objective of this research was to eva-luate the effect of biofertilizer on the abundance of nitrogen fixing bacteria and growth of cin-chona plants (Cinchona ledgeriana Moens) clones Cib.5. The research was conducted at the Research Institute for Tea and Cinchona, Gambung, Bandung, from May 2011 until June 2011. A randomized block design was used with five treatments and five replication. Application of five concentration of biofertilizer were per-formed. Concentrations were: 0, 2, 4, 6, and 8 cc/l of water. The results indicated that the application of biofertilizer gave the higher total bacterial population compared to the treatment without biofertilizer, but showed no significant effect on growth of Cinchona plants. Concen-tration of biofertilizer 8 cc/l gave the higher total bacterial population of nitrogen fixing.
Influence of biological control agents Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) on intensity of the attack twig caterpillar (Ectropis bhurmitra Wlk) and yield of tea plant (Camellia sinensis (L.) O. Kuntze) clone GMB 7 Antralina, Merry; Santoso, Joko
Jurnal Penelitian Teh dan Kina Vol 18, No 1 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.051 KB) | DOI: 10.22302/pptk.jur.jptk.v18i1.62

Abstract

The objective of this research was to evaluate the effect of Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) on attack intensity of twig caterpillar (Ectropis bhurmitra Wlk) and the yield of clone Gambung 7 tea plant. The research was conducted at the Research Institute for Tea and Cinchona, Gambung, Bandung, from May 2011 till June 2011. A  randomized block design was used with five treatments and replicated four replications. Application of five controls method for the twig caterpillar were performed. HaNPV at  4 x 106 PIB/mI, and 4 x 104 PIB/ml, Bacillus turingiensis (Thuricide) 1 g/L, Spinosad (Tracer 120 SC) 0,5 ml/L, and chemical insecticides (Electric 500 EC) 0,5 ml/L. The results indicated that HaNPV at both the density gave the same effect compare to other insecticides tested on the attack intensity of twig caterpillar as well as yield of tea plant clone Gambung 7.
KARAKTERISTIK GULMA DAN KOMPONEN HASIL TANAMAN PADI SAWAH (Oryza sativa L.) SISTEM SRI PADA WAKTU KEBERADAAN GULMA YANG BERBEDA Antralina, Merry
CEFARS : JURNAL AGRIBISNIS DAN PENGEMBANGAN WILAYAH Vol. 3 No. 2 (2012): CEFARS : JURNAL AGRIBISNIS DAN PENGEMBANGAN WILAYAH
Publisher : Fakultas Pertanian Universitas Islam 45 (UNISMA) Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rice is an important component of farming in Indonesia, because it is a staplecrop that should be available at all times. Therefore, rice production must be improvedboth intensive and extension. One of the increase in rice yield can be done by adjustingthe cropping system include the SRI (The System of Rice Intensification) . But rice withSRI method resulted weeds growth, because the SRI system, conditioned water withoutflooded. The object of the experiment was to study the characteristics of weeds and yieldcomponents of rice (Oryza sativa L.) on the SRI paddy cultivation due to Presence ofWeed. The design of experiment was a Randomized Block Design with eight treatmentand replicated 3 times. Eight treatments were as follows : A = With weeds to harvest, B =With weeds until the age of 21 days after planting (DAP), C = With weeds until the ageof 42 DAP, D = With weeds until the age of 63 DAP, E = weeds free until the age of 21DAP , F = weeds free until the age of 42 DAP, G = weeds free until the age of 63 DAP,H = weeds free until harvest. The results of this experiment showed that : There arenine species of weeds, which consists of seven dominant species, the 3 species ofbroadleaf groups, two species of grass and two species of seedges groups, Yieldcomponents of paddy crop in the SRI system is influenced by the presence of a weed in aplantation, so that weeding will be done on SRI's cropping system. Control of weeds incropping systems SRI, should be done at the right time, at least until the age of the plant42 days after planting.
KARAKTERISTIK GULMA DAN KOMPONEN HASIL TANAMAN PADI SAWAH (Oryza sativa L.) SISTEM SRI PADA WAKTU KEBERADAAN GULMA YANG BERBEDA Antralina, Merry
CEFARS : JURNAL AGRIBISNIS DAN PENGEMBANGAN WILAYAH Vol. 3 No. 2 (2012): CEFARS : JURNAL AGRIBISNIS DAN PENGEMBANGAN WILAYAH
Publisher : Fakultas Pertanian Universitas Islam 45 (UNISMA) Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rice is an important component of farming in Indonesia, because it is a staplecrop that should be available at all times. Therefore, rice production must be improvedboth intensive and extension. One of the increase in rice yield can be done by adjustingthe cropping system include the SRI (The System of Rice Intensification) . But rice withSRI method resulted weeds growth, because the SRI system, conditioned water withoutflooded. The object of the experiment was to study the characteristics of weeds and yieldcomponents of rice (Oryza sativa L.) on the SRI paddy cultivation due to Presence ofWeed. The design of experiment was a Randomized Block Design with eight treatmentand replicated 3 times. Eight treatments were as follows : A = With weeds to harvest, B =With weeds until the age of 21 days after planting (DAP), C = With weeds until the ageof 42 DAP, D = With weeds until the age of 63 DAP, E = weeds free until the age of 21DAP , F = weeds free until the age of 42 DAP, G = weeds free until the age of 63 DAP,H = weeds free until harvest. The results of this experiment showed that : There arenine species of weeds, which consists of seven dominant species, the 3 species ofbroadleaf groups, two species of grass and two species of seedges groups, Yieldcomponents of paddy crop in the SRI system is influenced by the presence of a weed in aplantation, so that weeding will be done on SRI's cropping system. Control of weeds incropping systems SRI, should be done at the right time, at least until the age of the plant42 days after planting.
Co-Authors Dewi Kania, Dewi Siti Zubaidah