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Widiatmaka,Bogor Agricultural University | Sutandi A.,Bogor Agricultural University | Iswandi A.,Bogor Agricultural University | Daras U.,Indonesian Agency for Agricultural Research and Development IAARD | And 2 more authors.
Applied and Environmental Soil Science | Year: 2014

Commodity development requires site selection which should be established prior to large scale development. The land suitability criteria for cashew are not presently available. The relationship between the biophysical aspects, especially land and soil with commodity productivity, is also not known in depth. The objective of this study is to establish the criteria of land suitability for cashew in Indonesia, based on its production and land characteristics. Cashew plantations in 5 provinces were sampled. The data of production per tree per year were obtained from farmers, while the soil was sampled and analyzed in the laboratory. Age-adjusted cashew production was used as the yield response and plotted against land characteristics. Boundary lines resulting from the scatter of points were described; these lines produced the limits of land suitability criteria. The criteria were established using a projection of the intersection between the boundary line and yield interval. The criteria were also built in accordance with the productivity index of FAO for the internal boundary inside the S (suitable) class and by calculating the break-event point production for the boundary between S (suitable) and N (nonsuitable) order. The main result of this research is land suitability criteria for cashew. Copyright © 2014 Widiatmaka et al. Source

Maftu'ah E.,Indonesian Agency for Agricultural Research and Development IAARD | Indrayati L.,Indonesian Agency for Agricultural Research and Development IAARD
Agrivita | Year: 2013

The main constraint in the management of peatlands includes: high soil acidity, very low nutrient availability especially NPK. The study aimed to determine the role of biochar to improve soil properties and paddy growth in peatlands. The study was conducted in Landasan Ulin rural, Gambut district, Banjar regency, South Kalimantan. The study was conducted from June to October 2012. Research was arranged in a randomized block design, with three replications. The treatment given was a combination of the type and dose of ameliorant i.e. the 3 types of ameliorant: F1 (50% purun tikus grass + 50% agricultural weed), F2 (16.7% chicken manure + 83.3% biochar), F3 (9% chicken manure + 91% purun tikus grass), with a dose of 2.5, 5 and 7.5 t ha-1, and control. The results showed that treatment of biochar could increase soil pH, total N, and exchangeable P (Bray I) though it was not significant, and significant in increasing the exchangeable K compared to controls. In the growth of rice plants giving biochar can increase plant height, number of tillers and number of panicles compared to controls. © 2013, Universitas Brawijaya. Source

Hassan Z.H.,Indonesian Agency for Agricultural Research and Development IAARD | Purwani E.Y.,Indonesian Agency for Agricultural Research and Development IAARD
International Food Research Journal | Year: 2016

A total of 50 fresh vegetables typically produced, marketed and consumed by people in West Java, Indonesia were quantitatively analysed for the presence of predominant bacteria including the total aerobic bacteria, Salmonella spp., Bacillus cereus, Staphylococcus aureus, Eschericia coli, coliform bacteria, Shigella spp. and lactic acid bacteria (LAB). The results revealed that the incidence levels of the above mentioned bacteria were highly varied from 8 to 100%. The microbial load of the samples were in the range of 3.65-10.61; 1.30-3.95; 2.00-4.30; 2.30-6.36; 2.30-6.30; 2.30-7.65; 3.65-4.87; and 4.48-7.11 log10 cfu/g for total plate counts, Salmonella spp., B. cereus, S. aureus, E. coli, coliform bacteria, Shigella spp. and LAB, respectively. It was observed that microbial contaminant was quite high especially in thai lemon basil of which the TPC was > 9 log10 cfu/g. Furthermore, the incidence level and microbial load in fresh vegetables procured from supermarket/grocery stores and local traditional market was higher in comparison to vegetables collected from packing house operations and homeyard. This could be probably attributed to a longer holding time of the vegetables at supermarket (longer period between harvesting and selling), the lack of cold storage facilities during transportation, a more frequent exposure to the air, as well as a more handling steps to go through such as sorting, grading, trimming which consequently more frequently exposed to the hands. Furthermore, in case of fresh vegetables obtained from local traditional market, this could be contributed from improper sanitation practices, lack of hygiene as well as better facilities during the handling and selling of fresh vegetables. The outcome of this study assumes importance as the information provided here would give a specific boost for producers, food handlers and consumers for considering food safety as a first priority during fresh produces handling. Furthermore, it is also important for hygiene officials to pay attention on what is offered to consumers and specify acceptable handling practices. © All Rights Reserved. Source

Nursyamsi D.,Indonesian Agency for Agricultural Research and Development IAARD | Husnain H.,Indonesian Agency for Agricultural Research and Development IAARD
Journal of Food, Agriculture and Environment | Year: 2015

Effectiveness of treating wastewater from electroplating industry with coagulants and adsorbents to remove heavy metals was studied by monitoring heavy metal accumulation in rice grown in soil irrigated with treated wastewater. Chitosan, a nontoxic and degradable biopolymer which can be used in wastewater treatment and activated Azolla were the two coagulants. Activated peanut shells and tea waste were used as adsorbents. All possible combinations of treating wastewater with coagulants and adsorbents including no treatment were used before irrigating rice with the treated water. Rice was grown in pots containing 10 kg of 2 mm air dried soil. The soil was collected from Dampyak Subdistrict, Central Java. Fertilizer was applied as much as 300 mg kg-1 nitrogen, 200 mg kg-1 phosphorus and 100 mg kg-1 potassium. The results showed that grain and straw yield of rice increased with all combinations of treating or not treating the wastewater with coagulants and adsorbents. Treating the electroplating wastewater with the two adsorbents and two coagulants reduced the accumulation of heavy metals in both the soil and the rice plant tissue. Treatment with either coagulant, alone or in combination with either adsorbent, reduced the soil Ni and Cu concentrations. Treatment with adsorbent alone reduced the soil Zn concentration. In case of rice, treating the wastewater with any adsorbent or coagulant, alone or in combination, significantly reduced the Cu concentration, whereas treatment only with tea waste was able to reduce the Cr concentration as compared to use of untreated waste water for irrigation. © 2015, World Food Ltd. and WFL Publishers. All rights reserved. Source

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