Aaronn Avit Ajeng

University of Malaya | UM · Institute of Biological Sciences

The dependence on chemical fertilizers and pesticides to increase agricultural outputs owing to the demands of a growing human population creates the need for a sustainable fertilizer. Biochar is presently a promising candidate as an inoculant carrier, given its highly porous structure, with nutrients naturally derived from the biomass, high water,...

The full dependency on chemical fertilizers in oil palm plantation poses an enormous threat to the ecosystem through the degradation of soil and water quality through leaching to the groundwater and contaminating the river. A greenhouse study was conducted to test the effect of combinations of biofertilizers with chemical fertilizer focusing on the...

Excessive use of agrochemicals caused by the increasing demand for food is a worrying issue in the developing nations. Thus, sustainable approach of using biochar as an inoculant carrier for the plant growth promoting rhizobacteria (PGPR) is receiving a considerable amount of attention. In the present study, suitability of palm kernel shell (PKS) b...

Biochar emerges as a carrier for microorganisms in various biotechnological fields. The interest on this carbonaceous material stems from its physicochemical properties and microenvironment which can potentially harbor bacteria. We conducted a batch experiment to study the adhesion behavior of Bacillus salmalaya 139SI and Bacillus amyloliquefaciens...

Biofertilizers encompass microorganisms that can be applied to plants, subsequently establishing themselves within the plant's rhizosphere or internal structures. This colonization stimulates plant development by enhancing nutrient absorption from the host. While there is growing literature documenting the applications of microalgae-based and bacte...

The use of gas chromatography–mass spectrometry (GC–MS) and multivariate statistics of principal component analysis (PCA) for metabolomics profiling of non-infected and Ganoderma boninense (G. boninense) infected oil palm rachises crude extracts grown on tropical soils have been evaluated. This combination has allowed us to quickly investigate the...

Biochar has various agricultural applications, including the promising use as a carrier for beneficial microorganisms. However, most recent research has demonstrated the possible attachment or immobilization of a single bacterial species onto biochar rather than a consortium of microbes for biotechnological applications. Thus, an assessment on the...

This work aimed to determine the effect of biodegradable superabsorbent hydrogel based on cellulose derivatives on the growth and yield of sweet corn (Zea mays saccharata Sturt) on dry land. The design used was a completely randomized design (CRD). The applied treatments consisted of four levels of hydrogel: without hydrogel (control), 2, 4, and 6...

As the world's population grows, it is necessary to rethink how countries throughout the world produce food in order to replace the conventional and unsustainable agricultural techniques. Microalgae cultivation using a nutrient-rich solution from hydroponic systems not only presents a novel approach to solving problems pertaining to the impact of t...

Bacillus salmalaya 139SI and Lactobacillus sp. isolated from Kerinci buffalo milk yogurt were investigated for their potential probiotics properties. Three isolates from the milk yogurt were identified as L. plantarum 1, L. plantarum 2 and L. delbrueckii. The three isolates and B. salmalaya 139SI exhibited tolerance to gastric acid of pH 3.5, resis...

Mangrove ecosystems are crucial for ecological processes. However, mangrove forests are currently under peril due to urbanization, aquaculture expansion, and growing pollutant burdens. Marine debris including organic deposits (ODs) is intentionally or unintentionally deposited into the marine environment, which could alter the natural ecology of t...

Biochar is a sustainable approach to greening the environment with its unique ability to improve soil fertility, increase crop yields, carbon sequestration, and retain soil moisture. Although multiple studies have reported on the benefits of biochar as an amendment on agricultural lands, less is known about its effects of palm kernel shell biochar...

Water and soil qualities play significant roles in the farming of giant freshwater prawn. The study evaluated water and soil qualities for giant freshwater prawn farming site suitability by using Analytic Hierarchy Process (AHP) and Geographic Information System (GIS) in Jelebu, Malaysia. The water quality parameters measured were biochemical oxyge...

Mangrove forests degradation is happening globally at an alarming rate since the 80’s. Land conversion for human activities is one of many reasons contributing to the issue. The access the Knowledge, Attitude and Practice (KAP) on the function and conservation of mangrove, data was collected in Kuala Langat, Selangor within the vicinity of Sijangka...