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All Journal Jurnal Riset Biologi dan Aplikasinya Biosaintifika: Journal of Biology & Biology Education Journal of Environmental and Science Education
Abdul Razak, Sarah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Medicine & Pharmacology Other

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Effectiveness of A Combination of Kitolod Leaves (Laurentia longiflora), Papaya Leaves (Carica papaya), and Lemongrass (Cymbopogon citratus) as Candidates for Biocides on Bactrocera Pests in Citrus sinensis Plants Wakhidya, Savira Amilda; Rohman, Fatchur; Setiowati, Frida Kunti; Abdul Razak, Sarah
Jurnal Riset Biologi dan Aplikasinya Vol. 6 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v6n2.p82-89

Abstract

Bactrocera is a pest that is detrimental to citrus farming. Bactrocera attacks cause developmental disorders in citrus fruit, including changes in fruit color (black spots appear from Bactrocera infection) and premature rot. Bactrocera also has a symbiotic relationship with Liberibacter asiaticus which causes Citrus Vein Phloem Degeneration (CVPD) disease which attacks phloem tissue in citrus plants. Bactrocera pest control was carried out by combining plants that have the potential to be used as biocides, namely kitolod, papaya, and lemongrass plants. This combination was used to switch the habits of fruit farmers who previously used synthetic pesticides to control pests.   Natural biocides are expected to have the same effectiveness as synthetic pesticides, but leave no residue on cultivated plants. A combination biocide from the three plants was made using the maceration method to obtain an infusion from each plant. Before being tested on Citrus plantations, an assay was carried out using an olfactometer to determine the effectiveness of the biocides. The research revealed that the combination of these three plants has the potential to be used as a natural biocide without leaving residueand causing damage or other developmental disorders to citrus plants.
Above Ground Biomass and Carbon Stock at Pesanggrahan Preserve Area, Malang, East Java, Indonesia Kundariati, Maisuna; Rohman, Fatchur; Ibrohim, Ibrohim; Nida, Safwatun; Abdul Razak, Sarah; Fardhani, Indra
Biosaintifika: Journal of Biology & Biology Education Vol. 16 No. 2 (2024): August 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v16i2.3485

Abstract

Tropical forests have known ecosystem services, including sequestering atmospheric carbon and fixing it into biomass. Since the revolutionary industrial changes, the atmospheric carbon level has risen during the recent decades, while the global temperature has increased compared to the pre-industrial levels. Furthermore, reducing atmospheric carbon can mitigate global warming and climate change. This study aims to estimate the aboveground biomass and carbon stock in the Pesanggrahan Forest, Malang Regency, East Java, Indonesia, and contribute local information to the vast global literature. This study was conducted in August 2023 and measured all tree species with a diameter >20 cm in a 5-ha area. The results found 208 individuals and 39 species of trees, the aboveground biomass and carbon stock of which were calculated. The total aboveground biomass (AGB) and carbon stock were 4,486 and 2,248 tons C/ha, respectively. Meanwhile, the total forest AGB and carbon stock in the 5-ha sampling area were 224.77 tons/ha and 112.39 tons C/ha, respectively. These findings highlight the cruciality of tropical forest vegetation in carbon storage and their overall role in regional and global ecosystem management in light of climate change.
Is the Climate Change being Real? A Case Study of College Students’ Climate Change Perception at Universiti Malaya Kundariati, Maisuna; Ibrohim, Ibrohim; Rohman, Fatchur; Abdul Razak, Sarah; Nida, Safwatun
Journal of Environmental and Science Education Vol. 5 No. 1 (2025): Journal of Environmental and Science Education : April 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jese.v5i1.2349

Abstract

Climate change is a socio-scientific issue which affecting to human life. Climate change was induced by the human activities (anthropogenic). People perception toward climate change might important to taking action address to climate change. This paper aim to analyze horticulture class students’ perception toward the climate change. Using a survey method, this study conducted in Biology Institute, Universiti Malaya, Malaysia. Fourthly students who enroll horticulture class declare be willing to participate in the study. The questionnaire consists of 25 questions reality (Q1-Q5), causes (Q6-Q10), valence of consequences 9 (Q11-Q14), spatial distribution (Q15-Q19), and temporal distribution (Q20-Q25). Data collection using a questionnaire in the form of a google form that was done for 30 minutes. The study find that students believe climate change is a serious problem in Malaysia region. Students also believe that climate change caused by human activists rather than natural phenomena. Climate change have already felt now and impacting local region and worldwide. This climate crisis giving a massive change in human lifestyle. In suggestion, all people around the world should take actions to tackling the climate change, both mitigation or adaptation ways. Mitigation and adaptation strategies needed to limiting the impact of climate change.
Co-Authors Fardhani, Indra Fatchur Rohman Frida Kunti Setiowati Ibrohim Kundariati, Maisuna Wakhidya, Savira Amilda