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Margaretta Christita
Forestry Research of Manado
Agriculture, Biological Sciences & Forestry Education

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The Effectiveness of Papaya Leaves and Chili Pepper (Capsium fructescens) as Bioinsecticide for White Oyster Mushroom (Pleuroutus ostreatus) Cultivation Margaretta Christita; Ady Suryawan
Jurnal Wasian Vol 5, No 2 (2018): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v5i2.4227

Abstract

This study purposes to compare the effectiveness of bio-insecticides made from papaya leaf extract, and chilli pepper in several different doses to reduce pest attack on white oyster mushroom (Pleurotus ostreatus). Experiments conducted on oyster mushrooms that are fruitful with 3 formula are formula 1 (papaya and water), Formula 2 (papaya leaves, chili pepper, and water), and the formula 3 (chili pepper and water). Parameters observed were the fallen fruit, harvest weight, fruit diameter, the number of dead pests. The results concluded that the formula has a significant effect on all parameters. Formula 2 has the highest level of effectiveness of insecticides can reduce the fallen fruit to 84 %, have twice yields  and 1.3 times bigger diameter than  control crop yields. Formula 2 has the composition of papaya leaf extract and chili pepper (1:1:2) .     Keywords: oyster mushroom, pests, bioinsecticide, papaya leaf, chili pepper
Identification of Water Bacteria from Nickel Post Mining in East Halmahera Margaretta Christita; Iwanuddin Iwanuddin; Yermias Kafiar; Supratman Tabba; Hendra S Mokodompit
Jurnal Wasian Vol 5, No 1 (2018): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v5i1.4265

Abstract

Nickel mining impact in heavy metal pollution on both soil and water. A method that is widely applied to reduce heavy metal contamination is bioremediation. Selection of bacteria that have potential reduction of heavy metal contamination in soil is very important in bioremediation process. The first step to select the potential bacteria is identification of samples. The purpose of this study is to identify existings  bacteria in pond  after nickel mining area  PT. Antam, East  Halmahera.  Methods used in this research are isolation and identification of bacteria by conventional methods includes morphological, physiologica,l and biochemical test. Identification using Bergey’s Manual Determinative.  The results showed there are  6 genera types of bacteria there are Bacillus, Esherichia, Enterococcus, Pseudomonas, Staphylococcus, dan Klebsiella, with 18 species in water of nickel post mining. Morphologically it is dominated by genus Bacillus as 50 % of the species. The identification of bacteria proved an existence of indigenous bacteria which is resistant to heavy metal stress.Keywords: bacteria, soil, water, contamination, post mining, East Halmahera
The Effectiveness of Papaya Leaves and Chili Pepper (Capsium fructescens) as Bioinsecticide for White Oyster Mushroom (Pleuroutus ostreatus) Cultivation Margaretta Christita; Ady Suryawan
Jurnal Wasian Vol 5, No 2 (2018): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (726.837 KB) | DOI: 10.20886/jwas.v5i2.4227

Abstract

This study purposes to compare the effectiveness of bio-insecticides made from papaya leaf extract, and chilli pepper in several different doses to reduce pest attack on white oyster mushroom (Pleurotus ostreatus). Experiments conducted on oyster mushrooms that are fruitful with 3 formula are formula 1 (papaya and water), Formula 2 (papaya leaves, chili pepper, and water), and the formula 3 (chili pepper and water). Parameters observed were the fallen fruit, harvest weight, fruit diameter, the number of dead pests. The results concluded that the formula has a significant effect on all parameters. Formula 2 has the highest level of effectiveness of insecticides can reduce the fallen fruit to 84 %, have twice yields  and 1.3 times bigger diameter than  control crop yields. Formula 2 has the composition of papaya leaf extract and chili pepper (1:1:2) .     Keywords: oyster mushroom, pests, bioinsecticide, papaya leaf, chili pepper
Identification of Water Bacteria from Nickel Post Mining in East Halmahera Margaretta Christita; Iwanuddin Iwanuddin; Yermias Kafiar; Supratman Tabba; Hendra S Mokodompit
Jurnal Wasian Vol 5, No 1 (2018): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.332 KB) | DOI: 10.20886/jwas.v5i1.4265

Abstract

Nickel mining impact in heavy metal pollution on both soil and water. A method that is widely applied to reduce heavy metal contamination is bioremediation. Selection of bacteria that have potential reduction of heavy metal contamination in soil is very important in bioremediation process. The first step to select the potential bacteria is identification of samples. The purpose of this study is to identify existings  bacteria in pond  after nickel mining area  PT. Antam, East  Halmahera.  Methods used in this research are isolation and identification of bacteria by conventional methods includes morphological, physiologica,l and biochemical test. Identification using Bergey’s Manual Determinative.  The results showed there are  6 genera types of bacteria there are Bacillus, Esherichia, Enterococcus, Pseudomonas, Staphylococcus, dan Klebsiella, with 18 species in water of nickel post mining. Morphologically it is dominated by genus Bacillus as 50 % of the species. The identification of bacteria proved an existence of indigenous bacteria which is resistant to heavy metal stress.Keywords: bacteria, soil, water, contamination, post mining, East Halmahera
Co-Authors Ady Suryawan Hendra S Mokodompit Iwanuddin Iwanuddin Supratman Tabba Yermias Kafiar