ABSTRACT Kenaf (Hibiscus cannabinus L.) is a fiber-producing plant with high economic value, especially in the industrial world. Kenaf development is increasingly limited due to limited land and the availability of superior varieties. One way to develop kenaf plants to achive stable and increased production is through genetic improvement namely through plant breeding activities.This study aims…
ABSTRACT This research aimed to determine the interaction and individual effects of goat manure bokashi compost and NPKMg (15-15-15-6-4) fertilizer on the growth of oil palm seedlings in the pre-nursery phase. The study was conducted using a Completely Randomized Design (CRD) with two factors: the dosage of bokashi compost (150, 200, 250 g/polybag) and the dosage of NPKMg fertilizer (0, 0.25, 0…
ABSTRACT Kenaf (Hibiscus cannabinus L.) is a potential fiber crop widely utilized in eco-friendly industries such as textiles, biocomposites, and paper. However, the development of kenaf in Indonesia remains limited due to the lack of superior varieties with high fiber productivity. This study aimed to evaluate the genetic variability, heritability, selection response, and phenotypic corre…
ABSTRACT Providing organic materials such as rice husk biochar can improve soil quality and increase the availability of nutrients that plant roots can absorb. Providing organic materials with NPK fertilization will increase the availability of N, P and K in the soil. This study aims to determine the effect of the combination of rice husk biochar with NPK fertilizer and get the best dose combi…
ABSTRACT Rice (Oryza sativa L.) is the staple food crop in Indonesia, making productivity improvement essential. In Riau Province, the harvested area has not significantly increased rice production, thus proper planting systems and balanced fertilization are required. This study aimed to determine the best combination of biofertilizer supplemented with Mucuna bracteata to reduce the use of…
ABSTRACT Oil palm (Elaeis guineensis Jacq.) is a plant with high economic value because it is one of the producers of vegetable oil. Plant Growth Promoting Rhizobacteria (PGPR) are soil microorganisms that are beneficial for plants and live in the root zone or rhizosphere. The purpose of this study was to determine the effect of the interaction of Humic Acid and PGPR administration, as well as…
ABSTRACT Corn (Zea mays L.) is an important food commodity in Indonesia. However, corn production in Riau Province has declined due to attacks by corn borers (Helicoverpa armigera Hubner), which can damage up to 39.7% of crops. Control is generally carried out using synthetic chemical insecticides that have negative impacts, such as killing natural enemies, resistance, and resurgence. An …
ABSTRACT Oil palm is a leading plantation commodity with high economic value and significantly contributes to national foreign exchange. However, oil palm seedling cultivation faces challenges such as limited fertile growing media and disease attacks, one of which is caused by the fungus Ganoderma boninense, leading to basal stem rot. This study aims to examine the effect of applying biofungic…
ABSTRACT Green mustard (Brassica juncea L.) is a high-economic-value vegetable commodity widely favored by the Indonesian population. However, its cultivation on marginal lands such as inceptisol is limited due to low soil fertility. This study aimed to evaluate the effect of different doses of vermicompost (kascing) organic fertilizer on the growth and yield of green mustard and to determine …
ABSTRACT Soybean plants (Glycine max (L.) Merril) are one of the main food crops in Indonesia after rice and maize. This study aimed to evaluate the effect of rabbit urine liquid organic fertilizer (LOF) and NPK fertilizer on the growth and yield of soybean. The experiment was conducted at the Experimental Farm of the Faculty of Agriculture, Universitas Riau, using a Completely Randomized Desi…
ABSTRACT The demand for soybeans will increase in line with population growth. Efforts to increase production can be achieved through intensification by improving cultivation techniques, including modifying the microclimate using organic mulch and controlling weeds through timely weeding. This study aims to determine the effect of the interaction between organic mulch type and weeding time on …
ABSTRACT Oil palm (Elaeis guineensis Jacq.) is a major commodity producing vegetable oil that plays a significant role in supporting Indonesia's economic development. This research was conducted to find solutions to the problem of expanding oil palm plantations into areas with varying altitudes. The aim of the study was to evaluate the vegetative organs of oil palm at different elevations. Thi…
ABSTRACT Sweet corn (Zea mays saccharata Sturt.) is an important horticultural crop valued for its sweetness and nutritional composition. Productivity in Riau Province remains below the national average due to the predominance of marginal soils such as Inceptisols, which are characterized by low pH, low base saturation, and limited nutrient availability. Soil fertility improvement has been att…
ABSTRACT Shallots are a high-value horticultural crop. A major constraint in its cultivation is the limited availability of quality bulb seeds, which are often disease-prone, bulky to transport, and required in large quantities per hectare. Mini bulbs produced from true shallot seed offer an alternative planting material that is healthier, more efficient, and easier to handle during storage an…
ABSTRACT Peanuts (Arachis hypogaea L.) are leguminous plants belonging to the Fabaceae family and have economic value. Peanut production in Indonesia and Riau is still unable to meet the needs of the community. Efforts to increase peanut productivity inculde the use of organic fertilizer from empty fruit bunch (EFB) compost and appropriate calcium. The purpose of research aims to determine the…
ABSTRACT Bird’s eye chili (Capsicum frutescens L.) is one of the most important vegetable commodities in Indonesia with high economic value, yet its productivity in Riau Province decreased by 822 tons from 2022 to 2023, indicating the need for more effective cultivation technologies. Fertilization combined with the application of rice husk biochar is considered a promising approach to improv…
ABSTRACT Tomato (Solanum lycopersicum Mill.) is a high-value horticultural commodity that requires specific cultivation management, particularly concerning nutrient availability. Potassium (K) is one of the essential macronutrients influencing tomato growth and productivity. Inceptisol soils, which are widely distributed in Indonesia, are characterized by low potassium content, necessitating f…
ABSTRACT Shallot (Allium ascalonicum L.) is a high-value horticultural commodity widely used as a cooking ingredient, industrial raw material, and a source of income for farmers. However, its productivity remains limited due to declining soil fertility and suboptimal fertilization practices. This study aimed to evaluate the effects of vermicompost, NPK fertilizer, and their interaction on the …
ABSTRACT Oil palm (Elaeis guineensis Jacq.) is an important commodity for the national economy through the production of edible oil, industrial oil, and biodiesel. Increasing global demand drives the expansion of planting areas to diverse topographic areas, including highlands. This study examines the development of oil palm vegetative organs at three altitudes: 0–100 masl (K I), 101–…
ABSTRACT Rice (Oryza sativa L.) is the main food source for the Indonesian people, so increasing its production is crucial to meet national food needs. Declining rice production often occurs due to attacks by plant pests, one of which is the stink bug (Leptocorisa acuta Thunberg). This pest control generally uses synthetic insecticides that have the potential to cause resistance and have negat…