Artikel (22)
The study aimed to determine the dynamics of soil moisture in various standing water levels and dosages of organic fertilizer. The experiment was arranged in a Completely Randomized Block Design (CRBD) with a 3 × 3 factorial treatment in 3 replicates. The first factor was 3 different water level...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 3: September 2020; 157-164 | 2020
The low quality of Entisol is caused by low availability of nitrogen, phosphorus, and potassium as well as low soil pH, so the addition of vermicompost is necessary. The purpose of this study was to determine the effect of vermicompost application on soil quality and to obtain the highest vermicompo...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 3: September 2020; 127-135 | 2020
The land allocated for newly opened lowland rice can be from ultisols, oxisols, inceptisols, and potential acid sulfate soils. The study was aimed to evaluate nitrogen (N), phosphorous (P), and potassium (K) inputs – outputs of newly developed lowland rice under different treatments and to va...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 3: September 2020; 137-145 | 2020
The purpose of this study was to determine the diversity of FMA from the rhizosphere of cassava, corn, taro, ginger, kale, pineapple which was cultivated in the Sungai Asam peatland by using a corn plant host. This research was conducted at the Soil Biology and Biotechnology Laboratory of the Facult...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 3: September 2020; 165-171 | 2020
The research was conducted to study the growth and the yield of the groundnut plant and to quantify the soil loss after groundnut harvesting as influenced by induced soil compaction. A ten kilogram of soil was packed in the pots with an initial bulk density of 1.05 Mg m-3, then it were compr...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 3: September 2020; 147-156 | 2020
Assessment adaptation of several new superior rice varieties on new rice fields affected by seawater intrusion was carried out in Tungkal Ilir Subdistrict, West Tanjung Jabung District, from April to October 2018. The study applied randomized block designs (RBD) with four replications. The treat...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 3: September 2020; 119-126 | 2020
Rambutan (Nephelium lappaceum) is Sapindaceae family, commonly found in agroforestry land, owned by the community in Langkat District, North Sumatra Province as One of Multy Purpose Tree Species. This study aimed to asses and map the distribution land suitability for N. lappaceum. This research was ...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 2: May 2020; 107-117 | 2020
River nutrient loadings rates are frequently determined from discharge and hydrochemistry relationships using regression techniques. Unfortunately such methods as a conventional technique are inadequate for dealing with the problem such as differences in shape and direction of loop forming in indivi...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 1: Januari 2012; 85-95 | 2020
Although agriculture is a victim of environmental risk due to global warming, but ironically it also contributes to global greenhouse gas (GHG) emission. The objective of this experiment was to determine the influence of long-term conservation tillage and N fertilization on soil carbon storage and C...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 1: Januari 2012; 75-84 | 2020
Soil consevation management system is an activity for diminishing sediment enrichment ratio and nutrient leacheds by water run off and soil erosion processes. The research was aimed to study sediment enrichment ratio and nutrient leached by run off and soil erosion on cacao plantations. Arachis pint...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 1: Januari 2012; 67-74 | 2020