Artikel (421)
A study was carried out to determine the effects of rates and types of P fertilizer (SP-36 and Phosphate Rock) on the growth of physic nut (Jatropha curcas L.), leaf P content, and soil available P in an Ultisol in a glasshouse. The treatments consisted of four rates of P (0, 50, 100 and 150 mg P2O5...
JOURNAL OF TROPICAL SOILS; Vol. 19 No. 1: January 2014; 9-15 | 2015
A field experiment was conducted on an Arenic paleudult in the rainforest zone of Southern Nigeria to determine the response of an improved variety of peanut (Arachis hypogea L. var. Samnut 23) to phosphorus, under different land preparation methods. Selected land preparation methods were “sla...
JOURNAL OF TROPICAL SOILS; Vol. 19 No. 1: January 2014; 1-7 | 2015
Estimation of soil erosion 3D (E3D) provides basic information that can help manage agricultural areas sustainably, which has not been sufficiently conducted in Indonesia. Sumani watershed is main rice production area in West Sumatra which has experienced environmental problem such as soil erosion a...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 241-254 | 2014
Evaluation of land suitability for soybean by involving the presence and biodiversity of soil fauna has been conducted. The research was done on thecenter of soybean plantations in Ultisols soils in Banten, Lampung, and Lahat (south Sumatera) Provinces. The objective of research was to determi...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 231-239 | 2014
Soil fauna has played an important role in ecosystem functioning, especially as ecosystem engineers which contribute to soil fertility in tropical environment. A tailing deposition area is one habitat that has several types of soil fauna to live and growth as well as involves in the deco...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 225-229 | 2014
The research was aimed to study the potency of two leguminous cover crops in enhancing tailing fertility of post tin mining with and without addition of mineral soil and compost. This pot experiment was carried out in Greenhouse of Soil Science Department, Faculty of Agriculture, Sriwijaya Unive...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 217-223 | 2014
Increased use of N fertilizer may substantially increase of nitrate nitrogen (NO3-N) leaching, which potentially pollutes groundwater. Leaching behaviour of nitrogen (N) was observed in the paddy field of forage rice cultivation. Two kinds of animal manure, cattle manure (CM) and poultry manure ...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 209-216 | 2014
Soil reaction (pH), aluminum (Al), iron (Fe) and phosphorus (P) are the parameters which presences in soil are related to each other. The role of each parameter on the grow than development of plants is very significant. Liming and organic mater amendment are some efforts that are frequently perform...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 203-208 | 2014
Rice is an important food crop in the world’s second after wheat and estimated rice demand in 2015 reached 55.8 million Mg. Ministry of health stated that approximately 100 million people in Indonesia are suffer micronutrient deficiencies (iron and iodine), because they cannot afford to b...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 195-202 | 2014
Saline soil cation dynamic is determined by the proportion of salt cations dissolved either acidic or alkaline. Common base cations in saline soil are in the proportion of Na > Ca > Mg > K. They affects the availability of water, nutrients, and plant growth. ...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 3: September 2013; 185-194 | 2014