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INDONESIA
Jurnal Sumberdaya Lahan
Published by Kementerian Pertanian
ISSN : 19070799     EISSN : 27227731     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
diterbitkan oleh Balai Besar Litbang Sumberdaya Lahan Pertanian, Jurnal Sumberdaya lahan terbit 2 kali setahun memuat suatu tinjauan terhadap hasil-hasil penelitian atau terhadap suatu topik yang berkaitan dengan aspek tanah, air, iklim, dan lingkungan pertanian
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 5, No 1 (2011)" : 5 Documents clear
The Role of Organic Matter in Improving Soil Physical Quality and Crop Production EDI YATNO
Jurnal Sumberdaya Lahan Vol 5, No 1 (2011)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v5n1.2011.%p

Abstract

The presence of organic matter in soils is very important to maintain and improve a better soil physical quality so that the soils are able to support plant growth and yields. Organic matter plays an important role in the process of aggregate formation from primary soil particles. This paper aims to review the role of organic matter in improving soil physical quality and crop yields. The results of some studies indicate that addition of organic matter such as farmyard manure, composted sugarcane bagasse residue, and mulch from crop residues in different types of soils may decrease soil bulk density, increase aggregate stability, total porosity, soil water content, and crop yields. Farmyard manure and composted sugarcane bagasse residue have a greater effect on improvement of soil physical quality and crops production compared to mulch from crop residues. The decrease in soil organic matter contents may cause the decrease in soil physical quality so that the soil capability to support plant growth and yield is also decreasing.
The Dissemination Of Agricultural Land Resource Maps YIYI SULAEMAN; B. MINASNY; MAMAT H.S
Jurnal Sumberdaya Lahan Vol 5, No 1 (2011)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v5n1.2011.%p

Abstract

The Indonesian Center for Agricultural Land Resource Research and Development (ICALRD) is one of the institutes that operates under the Indonesian Agency for Agricultural Research and Development (IAARD), Indonesian Ministry of Agriculture. Its main function, among others, is to conduct agricultural land resource inventories. These activities have resulted in voluminous agricultural land resource (ALR) maps with various themes, extent and scales. A strategy is required to disseminate these data to prospective users. This paper aims to discuss the approach and method to propagate ALR maps to users. Indonesian ALR maps are composed of climatic, soil, and landform maps at various scales, themes, and extent and covering across the country. The dissemination approach includes promotion and socialization using conventional and net-based media, collaborations with national and international partners, and on-demand sale. Terms and requirements for public access to ALS maps are also presented.
The Role of Organic Matter to Improve Phosphate Fertilization Efficiency on Acid Sulphate Soil ANI SUSILAWATI; ARIFIN FAHMI
Jurnal Sumberdaya Lahan Vol 5, No 1 (2011)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v5n1.2011.%p

Abstract

The large amount of acid sulphate soil area may be potential for agricultural development. Low soil pH, low to very low P availability and high Fe concentration are the dominant characteristics of acid sulphate soils. Low availability of P in acid sulphate soil may due to fixation process by iron and aluminum. Low N, low available K, and potential toxicityof Fe and Al are other characteristics of acid sulphate soil. Optimum agricultural management practices are required to leach the excess of Fe2+ and to maximize the P availability in order to obtain favourable conditions for rice growth. Rice straw application is part of technology for acid sulphate soil productivity improvement, a simple tecnology that sustainable and environmental friendly. Organic matter being a source of nutrients has also an important role in relation to P sorption capacity of soils through Fe chelation processes.
Utilizing National Cropping Calendar Atlas in Copping with Variability and Climate Change ELEONORA RUNTUNUWU; H. SYAHBUDDIN
Jurnal Sumberdaya Lahan Vol 5, No 1 (2011)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v5n1.2011.%p

Abstract

Inappropriate cropping season and pattern resulted in the low production of seasonal food crops and the major cause of crop failure. A local wisdom called “Pranatamangsa” previously used to determine cropping time, now often miss due to climate anomaly. Crop growth is much affected by rainfall, solar radiation, and air temperature. The rainfall determines water availability and is essential requirement for crop growth. Planting time and cropping pattern until recently are adjusted to the climate variability and water availability to the crops. Therefore, the cropping calendar contained in this atlas is based on climate variability such as wet (El-Nino), normal, and dry (La-Nina) years. The atlas provides detailed description of planting time and crop rotation in each sub-district for each season in one year based on climate condition. The preparation of cropping calendar, both spatially and tabularly, provides information on cropping alternative for wet, normal or dry years. These alternatives were developed at 1:250 000 scale to be applied as reference in determining planting time and cropping pattern for each region and sub district. Hence, the risks of yield lost or crop failure can be avoided or minimized. Further, the policy and strategy of procurement and distribution of farm inputs particularly fertilizer and seed can be properly formulated. This cropping calendar was arranged through several steps: (1) climate data collection and farmer’s interview, (2) analysis of planting time and mapping, (3) field verification, and (4) refining the delineation of cropping pattern based on the sensitivity level. For a better planning of cropping time and pattern, this cropping calendar was arranged at the scale of 1:250.000 and attached with an information of cropping time and pattern at the sub-district level.
Silvopasture and its Impacts to Microclimates, Soil Properties, and Carying Capacity on Semi Arid Grass Land of West Nusa Tenggara Province, Indonesia I GEDE PUTU WIGENA
Jurnal Sumberdaya Lahan Vol 5, No 1 (2011)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v5n1.2011.%p

Abstract

In West Nusa Tenggara Province, natural pasture is one of important forage sources for cattle feed. Due to its agroclimate condition, carrying capacity of the native pasture is usually low. Wider variation has been observed between wet and dry seasons, and it has significant effects to cattle population. Based on the issue, a medium term of land management by introducing of silvopasture combined with legume trees, high yielding varieties of grasses, and fast growing leguminous shrubs, has been done during 1995/96-1998/99 period. The aim of the research was to increase carrying capacity of the natural pasture based on the improvement of microclimate condition, soil properties, and carrying capacity. The experiment used split-plot design with three replications. Implementation of silvopasture in the form of wind breaker (WB) and non wind breaker (NWB) are as main plot, carrying capacity estimation (grazing and cut systems) as sub plot, while introducing high yielding varieties of grasses and fast growing legume as sub-sub plot. Observation during four years showed that silvopasture could improve microclimate conditions indicated by decreasing of air temperature from 27.9-40.0oC into 22.0-38.9oC, increasing of air humidity from 62.6-93.6% into 77.1-89.1% and decreasing of saturation steam pressure deficit from 3.4-26.3 into 0.5-14.8. Soil organic matter increased almost 200% on the 3rd year and soil nitrogen increased almost 300% on the 4th year of experiment. Silvopasture system (wind breaker treatment) could increase carrying capacity grass land that varied from 1.16 to 1.75 animal unit (AU) of cattle/ha/year, while carrying capacity of non wind breaker varied from 1.10 to 1.37 animal unit (AU) of cattle/ha/year.

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