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Manto, Agus
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science

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Correlation of Plantation Area and Palm Oil Production in Sumatra and Kalimantan Regions Kurniawan, Indra; Kurniadhi, Adhitya; Aji, Wandha Atmaka; Manto, Agus
Tropical Plantation Journal Vol 3, No 2 (2024): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v3i2.46

Abstract

This study aims to analyze the correlation between the area of oil palm plantations and oil palm production in Indonesia, especially in the Sumatra and Kalimantan regions which are the centers of oil palm plantation distribution. Data collection using secondary data from the Central Statistics Agency (BPS), this study aims to determine the relationship between the increase in land area and oil palm plantation production over the past 10 years. This study uses a quantitative method with a correlative approach. Data analysis was carried out using a bivariate correlation Pearson correlation test to determine the positive relationship between plantation area and oil palm production. The results of the analysis showed a significant positive relationship between the land area variable and oil palm production in both the Sumatra and Kalimantan regions, this is indicated by a positive number and a strong correlation of 0.852 for the Sumatra region and very strong, namely 0.996 for the Kalimantan region. In addition, the results of the interpretation of the correlation by looking at Sig. (2-tailed) also show that between the land area variable and production there is a significant correlation, namely 0.002 for the Sumatra region and a value of 0.000 for the Kalimantan region. Although the correlation between land area and production shows a positive value and has a very strong correlation, there are still other factors such as technology, climate, and management practices that also play a role in influencing palm oil production results.
Effectiveness of Ginger Extract (Zingiber officinale) and Turmeric (Curcuma domestica) against the mortality of the Armyworm (Spodoptera litura) Santi, Idum Satia; Manto, Agus; Noviana, Githa
Tropical Plantation Journal Vol 3, No 2 (2024): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v3i2.43

Abstract

Some types of plants can serve as plant-based insecticides. Ginger (Zingiber officinale) and Turmeric (Curcuma domestica) are ingredients that are often used as pesticides on various plant pests. Spodoptera litura itself is a pest that is quite annoying in various plants. The study aimed to examine ginger (Zingiber officinale) and turmeric (Curcuma domestica) extracts as insecticides to control armyworms (Spodoptera litura). The research was carried out in Pelemsari Village, Prenggan, Kotagede, Yogyakarta from May to June 2022. The study used a Complete Random Design (RAL) with 2 factors. The first factor is the type of extract, namely ginger and turmeric. The second factor is the concentration of the extract which consists of 3 levels, namely 20%, 40%, 60% and control, each treatment is repeated 3 times. To find out the real difference between the data treatments, the observation results were analyzed with Duncan's Multiple Range Test (DMRT) at the real level of 5%. Ginger and turmeric extracts at a concentration of 20% have been able to control S. litura larvae. Ginger extract is more effective compared to turmeric extract based on the mortality test, efficacy, death rate, and feed spoilage rate of S. litura larvae. The research is still in the experimental stage in the laboratory and needs to be tested in the field to get an effective dose for armyworms.
The Use of Pheromones and Lamps as Traps for Rhinoceros Beetles (Oryctes rhinoceros) in Young Oil Palm Plants Santi, Idum Satia; Rianto, Rianto; Manto, Agus
Tropical Plantation Journal Vol 4, No 1 (2025): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v4i1.52

Abstract

The rhinoceros beetle (Oryctes rhinoceros) is a fairly important pest in oil palm plants, especially in young or unproductive plants. The purpose of this study is to examine the use of pheromones and lamps as horn beetle traps. The research was carried out in a community plantation in Sungai Lala, Kelawat District, Indragiri Hulu, Riau. The research was carried out for 1 month, with tools in the form of lamp traps and pheromones, as well as a combination of both.  The results showed that the combination of pheromones with trap lights provided the most catch compared to single treatment. There was no difference in the catch of male and female beetles in all treatments. It is hoped that the results of this research can be used to control rhino beetles in a simple way in community plantations. 
The Effect of Sample Weigh, Incubation Duration And Isolation Methods on The Quality of Phalaeonopsis amabilis root DNA Handayani, Etty; Rineksane, Innaka Ageng; Isnawan, Bambang Heri; Setiawan, Haris Anggita; Manto, Agus
Tropical Plantation Journal Vol 4, No 2 (2025): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v4i2.63

Abstract

Orchid Ph. amabilis is one of the plants designated as "Indonesian National Flower" and designated as "Puspa Pesona Indonesia". Orchid Ph. amabilis has a diversity that is not widely known, so that it is necessary to identify it molecularly. DNA isolation is the first step in molecular testing. This study aims to determine the sample weight, incubation time and the appropriate isolation method for DNA isolation from samples of Ph.amabilis orchid roots. In this study, the DNA isolation stage used two experimental methods, namely the CTAB method (Murray and Thompson) and the mini kit. The research method used was a single factor experiment with a combination of sample weight and incubation time consisting of 6 treatments with 3 replications, so 18 experimental units were obtained. The experimental treatment used was from the roots of the orchid Ph. amabilis which has a sample weight of 0.25 g, 0.5 g, and 0.75 g and each sample weight treatment was incubated for 30 minutes and 60 minutes. In addition, DNA isolation using the kit method had a sample weight of 0.25 g, 0.5 g and 0.75 g and an incubation period of 10 minutes. The results showed that the DNA isolation of Ph. amabilis with a sample weight of 0.75g, incubation time of 30 minutes using the CTAB method showed the best treatment in producing DNA with a concentration of 384 ng/µl and a purity of 1.9. This study is expected to provide information on sample weight, incubation time and the appropriate method for DNA isolation of Ph. amabilis orchid roots.
Distribution of Argentine Flies (Cecidochares connexa Macquart) as a Biological Control Agent of Siamese Weeds (Chromolaena odorata L.) Muin, Abdul; Santi, Idum Satia; Wahyud, Dicky; Manto, Agus
Tropical Plantation Journal Vol 4, No 2 (2025): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v4i2.65

Abstract

This study aims to determine the level of attack and distribution of Argentine flies (Cecidochares connexa) as biological control agents against Siamese weed (Chromolaena odorata) in Gunungkidul Regency. The method used was a field survey in June–July 2024, with direct observation and sampling of host plants in four cardinal directions from the starting point of release (Wanagama I Forest). The parameters observed included the percentage of attacks, the number of puru, and puru holes per plant. The results showed that the highest attacks occurred in the Western region (72%), followed by the South (69%), the North (68%), and the East (49%). The average attack across the region reached 65%.  C. connexa has become widespread and established in the Gunungkidul area.
The Effect of Applying Azolla Liquid Organic Fertilizer in the Growth of Oil Palm Seedlings in Pre-Nursery Hastuti , Pauliz Budi; Wirianata, Herry; Yunita, R; Manto, Agus
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 8 No. 1 (2024)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v8i1.369

Abstract

The development and replanting of smallholder oil palm is rapid and massive; its success from the beginning is determined, among others, by sufficient quantities of seeds with good quality. Nutrient management is the highest priority in nurseries, and along with strengthening the application of sustainability principles in the palm oil industry, alternative sources of nutrients other than inorganic fertilizers are needed. This study aimed to determine the right concentration of Azolla liquid organic fertilizer to increase the growth of oil palm seedlings in pre-nursery. The study was a single factor arranged in a completely randomized design. The studied treatment of POC Azolla concentrations of 100, 85, 75, 65, 55, 45, 35, 25, 15%, plus compost treatment of Azolla solids, NPKMg (15-15-6-4) and urea with 8 repetitions. Required seedlings (9+3) x 8 = 96 polybags. The results showed that applying Azolla POC concentration of 15-35% and solid Azolla compost provided the growth of oil palm seedlings in the pre-nursery, which tended to be better than inorganic fertilizers. POC in this concentration range also results in a better seedling root system, thus potentially increasing the adaptability of oil palm seedlings after being transplanted on permanent land
Cashew Nut Shell Liquid (Anacardium occidentale) as a Botanical Insecticide to Control Helopeltis sp on Cocoa plants Santi, Idum Satia; Kurniawan, Indra; Manto, Agus
Tropical Plantation Journal Vol 3, No 1 (2024): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v3i1.38

Abstract

Cashew nut skin is considered as waste, whereas cashew nutshell extract, or called CNSL (Cashew Nut Shell Liquid), has the potential as a botanical insecticide that can control insect pests. Helopeltis sp is a pest that often attacks cacao plants. The study aims to determine the effectiveness of cashew nutshell extract as a botanical insecticide to control  Helopeltis sp. in cacao plants. The study used a randomized block design (RBD) with seven treatments and three replications. Testing CNSL on adult (imago) and pre-adult (nymph) insects. CNSL concentrations used are 0%, 3.125%, 6.25%, 12.5%, 25%, 50% and 100%. The results showed that cashew nutshell extract has strong toxicity. A concentration of 3.125% can kill 100% of the imago Helopeltis sp. (72 hours after application) for the nymph Helopeltis sp. (48 hours after application). LC50 values 24 hours after application for imago and nymph were 4.63% and 0.94%, and LC99 for imago and nymph was 42.62% and 23.89%.  Furthermore,  cashew nut extract can be used as a botanical insecticide to control other plant pests.
Co-Authors Abdul Muin Aji, Wandha Atmaka Bambang Heri Isnawan Githa Noviana Handayani, Etty Hastuti , Pauliz Budi Idum Satia Santi Indra Kurniawan Innaka Ageng Rineksane Kurniadhi, Adhitya Rianto Rianto Setiawan, Haris Anggita Wahyud, Dicky Wirianata, Herry Yunita, R