Artikel (421)
Studying the weathering process in pristine volcanic materials is crucial as this process will determine further soil characteristics. Mount Anak Krakatau is reported as one of the fastest-growing volcanoes. This volcano erupted powerfully in December 2018, ejecting tons of volcanic materials. These...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 2: May 2023; 57-70 | 2023
The average productivity of upland rice in Indonesia is around 4.4 tons per ha, significantly lower than its potential yield of 8.5 Mg per ha. The utilization of synthetic zeolite as a soil amendment and liquid organic fertilizer (LOF) is one of the technologies that can be applied to increase the g...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 3: September 2023; 107-115 | 2023
Inceptisols are soils with low to moderate fertility and have not experienced further development. This study aims to characterize the chemical properties of inclusions and base exchange fractionation of P of soil on Inceptisol soil map units of forest land, dry land, and paddy fields in Jasinga. So...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 3: September 2023; 89-97 | 2023
Nitrogen (N) and potassium (K) are macronutrients that plants need for better growth and yield. However, they are readily lost from the soil through volatilization, denitrification, and leaching, aside from being absorbed by plant roots. Thus, a Controlled Release Fertilizer (CRF) may be formulated ...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 3: September 2023; 99-106 | 2023
Mining causes destructive soil properties, especially soil texture, water retention, and transmission. Applying biochar is the best way to improve soil physical properties. A glasshouse experiment was conducted to evaluate the role of biochar on soil physical properties based on a Completely Randomi...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 3: September 2023; 127-133 | 2023
Methods of soil and water conservation in tropical wetlands have been carried out is using chemicals to increase the stability of soil aggregates and water-holding capacity. The experiment aims to improve soil stability using Polyacrylamide (PAM) and Super Absorbent Polymer (SAP) materials. Experime...
JOURNAL OF TROPICAL SOILS; Vol. 29 No. 1: January 2024; 33-40 | 2023
Water and nutrients is important for plant which has its characteristics. This study has been carried out in the UB (Brawijaya University) forest about soil moisture content during rainy and dry seasons, Total-N, -P, -K from litter on different types of shade and age of coffee plants, and their effe...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 2: May 2023; 39-45 | 2023
Vertisol has a clay texture, high micropores, and high water and nutrient absorption ability. The high water content of Vertisol causes the air to decrease, thus inhibiting root development. Stretching of the Vertisol structure is expected to increase soil porosity and reduce ion and water absorptio...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 2: May 2023; 79-87 | 2023
The cultivation of Red Onions (Allium ascalonicum, L.) in paddy fields needs to be investigated further because paddy fields have constraints on the soil physical and chemical properties, such as soil structure, drainage, pH, and nutrient availability. The application of husk charcoal and K fertiliz...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 2: May 2023; 71-77 | 2023
The higher national rice demand encourages various efforts to increase rice production. This increase in rice production occurs in line with increasing public awareness of healthy foods, especially organic rice. Rice field management with an organic system is expected to provide a higher yield and q...
JOURNAL OF TROPICAL SOILS; Vol. 28 No. 1: January 2023; 9-15 | 2023