The planning carried out by the teacher is compiling a learning module. The learning modules that are arranged are learning modules that can make the learning process run well. Teachers must provide opportunities for students to play an active and creative role in exploring abilities in each learning process, in order to create a good learning process. One alternative that can be used by educat…
Biology learning is one of learning that focuses on providing direct experience to grow the abilities possessed by students so that they are able to understand and know about the natural surroundings with critical thinking skills. One of the problems in the 21st century is environmental problems, a lot of environmental damage such as deforestation for arable land, deforestation for housing, inc…
North Tambusai sub-district is an area consisting of lowlands and slightly hilly undulating. This area is one of distribution area for ferns. The purpose of this study was to provide an information of fern species found in North Tambusai sub-district, Rokan Hulu, Riau Province and to provide their morphological data. Sample collections were conducted by using exploration method. Morphological c…
The genus Bactrocera is a genus that commonly attacks horticultural plants including chilies and eggplants. Bites from fruit fly insects cause economic losses of 20%- 40%. This study aims to inventory and identify the types of fruit flies that attack eggplant and chilies. This research was carried out in Canduang District, Agam Regency using exploration methods and analyzed descriptively. T…
Sea cucumbers are types of marine invertebrates of thorn-skinned animals that has important economic value cause it contains a variety of beneficial compounds. The people of Buru Island, Karimun Regency only used as food, so the main threat to the existence of sea cucumbers in the waters. The purpose of this study is to the types of sea cucumbers of the class Holothuroidea from the waters of Bu…
Sweet potato (Ipomoea batatas L.) belongs to the family Convolvulaceae which is one of the main commodity crops in Indonesia. Sweet potato plants have a high morphological variation on stems, leaves, flowers, and tubers. Phytochemical studies are studies that aim to determine the content of plant secondary metabolites. The aim of this study was to investigate the morphological and phytochemical…
Sexual violence against children is a form of serious problem that often occurs in Indonesia. In Riau Province, especially in Dumai City, the Dumai Timur District is the highest contributor to sexual violence against children in Dumai City. On the other hand, children who are victims of sexual violence are part of a society that is not yet mature, both physically and psychologically, so they ne…
Plastic is nondegradable solid waste that have become the greatest threat for the environment. The use of microorganisms and their enzymes represents the most ecofriendly and effective decontamination approach compared to other methods. Riau local fungi isolate has been successfully tested its ability to degrade LDPE plastic, but its ability to degrade HDPE is not yet known. This study aims to …
Eucalyptus sp. tree has great potential to be developed as raw material for pulp and paper because it has fast-growing properties, good adaptability and high productivity. Monoculture crops with low vegetation diversity have the potential to cause disease epidemics caused by the pathogen Cylindrocladium sp. (leaf spot), Ceratocystis sp. (stem rot), and Ganoderma philippii (root rot). The integr…
Kepungan sialang is a system in the form of one or several sialang trees, which are tall and large trees that are favored by these bees for nesting in groups, which are surrounded by the rest of the natural forest that is deliberately maintained as a protector. So far, the factors that influence the occupancy of the giant honey bee (Apis dorsata) on the sialang tree and their productivity in a …
PT Global Alam Nusantara (GAN) is a peat swamp forest in the Riau Ecosystem Restoration (RER) stretch of the Kampar Peninsula. Peat swamp forest is the one of habitats for mammals, 77 species of mammals have been recorded in RER, but the information of the diversity of mammals in PT GAN is not known yet. Therefore, this study aims to determine the diversity of mammals, distribution and existenc…
Rhizosphere bacteria are bacteria that live ini the root area (rhizosphere) and play an important role in plant growth. In general, bacteria in the plant rhizosphere provide various benefits to plants. One of them is production of growth hormone, Indole Acetic Acid (IAA). This study aims to determine the potential of eight exopolysaccharide-producing bacteria to produce IAA hormone ad identify …
Coconut (Cocos nucifera L.) is a commodity that can grow in the tropics and almost all parts of the coconut plant can be utilized by humans. VCO (Virgin Coconut Oil) is pure coconut oil that is produced from the flesh of fresh old coconuts. The composition of fatty acids in virgin coconut oil is very important to see the quality of the oil. The purpose of this study was to compare the fatty aci…
Sour eggplant belongs to the genus Solanum used in this study, which has villosus and not easy to fall out on the skin of the fruit that distinguishes it from other sour eggplant. DNA barcoding is a technique for identification using short DNA sequences from the genome of an organism. The objective of this research is to analyze the trnL-trnL-trnF intergenic spacer of the sour eggplant (S. fero…
Perepat plant (Sonneratia alba) is one of the mangrove species that has the potential as a source of antioxidants that is used by the people of Sapat Village, Indragiri Hilir Regency. The purpose of this study was to determine the antioxidant activity of perepat leaf extract at different growing locations. Testing of antioxidant activity was carried out using the DPPH radical scavenging method.…
Bengkalis district is one of the area dominated by peatlands. Most of peatland areas are found along the coast and influenced by tides and low tides. Bengkalis district is an area that is prone to abrasion because it is directly adjacent to the Malacca Strait, one of which is peat on Sesai Panjang Beach, Simpang Ayam Village. This research aimed to analyze the impact of post-abrasion of peat so…
Castor (Ricinus communis L.) is a plant that produces oil which is used as industrial material. The production of castor oil is decrease caused by pathogenic fungal infection. Pathogen control using fungicides is not effective. So another alternative is used, namely biological control using endophytic fungi. Fungal endophytes live inside the plant tissues and known to produce secondary metaboli…
Tacca is a plant from the Taccaceae family that has the potential to be used in the field of medicine. The secondary metabolite content of several types of Tacca is useful for treating gastric diseases, diarrhea, dysentery and has antioxidant and antibacterial properties. This study aims to determine the phytochemical content and IC50 value of several types of Tacca plants that have the potenti…
PT Global Alam Nusantara (GAN) is one of four peat restoration areas managed by Riau Ecosystem Restoration (RER) in the Kampar Peninsula area. In the RER area, 39 species of snakes have been recorded. Information on the species and diversity of snakes in PT GAN has not been recorded. Therefore, to complete data on snake species found in the RER area, this research was carried out in stages star…
Castor oil (Ricinus communis L.) is an oil producing commodities that plays a role in meeting industrial and economic needs. Infection with the pathogen fungi caused a decrease in the production of castor oil. Biological control using Trichoderma spp. has been widely used. Trichoderma spp. known as one of the benefical biofungicide because it has high antagonistic properties inhibiting the grow…