Incidence of heavy metals in the application of inorganic fertilizers to rice farming soils (Valencia, Spain)

1996 ◽  
pp. 491-493 ◽  
Author(s):  
E. Gimeno-García ◽  
V. Andreu ◽  
R. Boluda
Keyword(s):  
Heavy Metals ◽  
Rice Farming ◽  
Inorganic Fertilizers

Heavy metals incidence in the application of inorganic fertilizers and pesticides to rice farming soils

1996 ◽  
Vol 92 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Eugenia Gimeno-García ◽  
Vicente Andreu ◽  
Rafael Boluda
Keyword(s):  
Heavy Metals ◽  
Rice Farming ◽  
Inorganic Fertilizers

scholarly journals The use of Agrochemicals for inc BIOAVAILABILITY OF HEAVY METALS Pb AND Cd IN LAND FOR CULTIVATYING CABBAGE IN KINTAMANI AREA BANGLI

2018 ◽  
Vol 12 (1) ◽  
pp. 42
Author(s):  
Regi Mahendra ◽  
I Made Siaka ◽  
Iryanti Eka Suprihatin
Keyword(s):  
Heavy Metals ◽  
Agricultural Soils ◽  
Agricultural Products ◽  
Digestion Method ◽  
Inorganic Fertilizers ◽  
Single Extraction ◽  
Intensive Use ◽  
Synthetic Pesticides ◽  
Bioavailable Metals

The use of Agrochemicals for increasing the agricultural products are commonly applied on agricultural soils, especially the soil used for cultivatif cabbage in the area of Kintamani-Bangli, Province of Bali. Agricultural soils used for cultivatif cabbage in Kintamani area commonly apply inorganic fertilizers and synthetic pesticides for increasing the products. However the use of these agrochemicals tends to uncontrol and causes the soils polluted. One factor of contamination of soil is the presence of heavy metals in the soil. Intensive use of inorganic fertilizers and synthetic pesticides can lead to high levels of bioavailability of heavy metals in plants. This study intend to determine the total contents of heavy metals Pb and Cd in the agricultural soils and analyse bioavilability of those metals. The total metals was determined by the use of digestion method involving reverse aquaregia (HNO3:HCl, 3:1) and the bioavailability of the metals was determined by applying single extraction including HCl and EDTA extractions. The results show that the total contents of Pb and Cd in the soils were 4,1261 ± 0,1113 – 14,5923 ± 0,3790 mg/kg and 0,8803 ± 0,0259 - 0,9425 ± 0,0195 mg/kg respectively. The bioavailable metals of Pb and Cd in the soils was 31,14% - 42,53% and 78,70% - 80,73%, respectively.

scholarly journals Source and Health Risk Assessment of Heavy Metals in Non-Certified Organic Rice Farming at Nakhon Nayok Province, Thailand

2019 ◽  
pp. 96-106
Author(s):  
Porntiwa Satachon ◽  
Sasithorn Keawmoon ◽  
Patcharida Rengsungnoen ◽  
Sirikul Thummajitsakul ◽  
Kun Silprasit
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Health Risk ◽  
Health Risks ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Rice Grain ◽  
Rice Farming ◽  
Organic Rice ◽  
Certified Organic

Heavy metals contamination is a problem in some non-certified organic rice farms that do not have buffer zones. Soil monitoring is therefore required to estimate the potential risk of such organic products. The objectives of the present study are to determine the extent of heavy metal contamination, sources of contamination and assessment of non-carcinogenic health risks to local consumers. Concentrations of toxic heavy metals were determined in soil and rice grain to assess the bioaccumulation factor. The health risk assessment was analyzed following Target Hazard Quotients (THQ) and the Hazard Index (HI). Sources of heavy metal contamination were determined by a correlation study of heavy metal contents, THQ and HI with some physical properties of these non-certificated organic rice fields. The occurrence of heavy metals in agricultural soils and rice grain were ranked in the following order: Pb > Mn > Zn > Cu > Ni and Zn > Mn > Cu > Ni. However, Pb and Zn contamination exceeded maximum permissible levels in rice grain. Non-certified organic rice from these locations might therefore present a health risk for consumers; the high HI values of rice consumption for adult males (5.10-35.09) and 6.12-42.08) indicated a serious adverse health risk for consumers. Individual correlation analysis and principal component analysis indicated that the THQ of Zn was positively correlated with its content in soil and in the grain. Main roads and community activities were found to be the main source of contamination for Zn and Mn, while Pb and Cu contamination mainly derived from paddy field activities such as fertilizer application. This finding will contribute to raising public awareness of the health risks of non-certified organic rice farming.

scholarly journals KONDISI SOSIAL DAN KEBIASAAN PETANI PADI MENGGUNAKAN INPUT PRODUKSI PADI (Oryza sativa, L.) DI KABUPATEN INDRAMAYU

2019 ◽  
Vol 10 (1) ◽  
pp. 11-29
Author(s):  
Wiwik Ambarsari
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Social Conditions ◽  
Lowland Rice ◽  
Rice Farming ◽  
Land Area ◽  
Inorganic Fertilizers ◽  
Rice Farmers ◽  
The Social ◽  
Survey Approach

This study aims to determine the social conditions and habits of rice farmers in the use of input production of lowland rice farming in Indramayu Regency. The research location is in 3 Districts of Indramayu Regency, namely Sliyeg, Lelea, and Gabuswetan Districts. This research was conducted with a survey approach, descriptive quantitative and qualitative. Sampling of rice farmers was carried out by multistage purposive sampling totaling 120 people. The results of this study are the social conditions of the farmers, 70% of the productive age, 60% are uneducated, 65% are very experienced, and 60% of the land area is under 1 hectare. The habit of using production inputs, 85% already use certified and superior varieties of rice seeds, 71% use inorganic fertilizers, and 93% use inorganic pesticides.

Distribution of heavy metals in rice farming soils

1995 ◽  
Vol 29 (4) ◽  
Author(s):  
E. Gimeno-Garc�a ◽  
V. Andreu ◽  
R. Boluda
Keyword(s):  
Heavy Metals ◽  
Rice Farming

scholarly journals Evolution of heavy metals in marsh areas under rice farming

1999 ◽  
Vol 104 (2) ◽  
pp. 271-282 ◽  
Author(s):  
V Andreu ◽  
E Gimeno-Garcı́a
Keyword(s):  
Heavy Metals ◽  
Rice Farming

scholarly journals Evaluation of Levels of Cadmium, Chromium and Lead in Bio Fertilizer from Various Feed Stocks and in Inorganic Fertilizers Used in Kenya

2020 ◽  
pp. 38-42
Author(s):  
J. G. Kinaichu ◽  
C. G. Nyaga ◽  
P. Njogu ◽  
E. G. Gatebe
Keyword(s):  
Heavy Metals ◽  
Cow Dung ◽  
Local Market ◽  
Inorganic Fertilizers ◽  
Flame Atomic Absorption ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Chicken Litter ◽  
Lead Metal ◽  
Set Up ◽  
Pig Wastes

This study was conducted to compare the levels of selected heavy metals (Pb, Cr and Cd) in inorganic fertilizers and bio slurry from different feed stocks. Bio slurry samples from chicken droppings, cow dung and pig wastes were analyzed for levels of selected heavy metals. Inorganic fertilizers for analysis DAP, CAN, Urea and NPK were procured from local market in Juja town next to Jomo Kenyatta University of Agriculture and Technology (JKUAT). Bio slurry samples were collected from Githunguri Sub County in Kiambu County and from mini digesters set up at JKUAT. Concentrations of Cd, Cr, and Pb were determined by Flame Atomic Absorption Spectrophotometer (Shimadzu 6200). Inorganic fertilizers were found to contain detectable amounts of lead metal. DAP had the highest amount of Pb at 0.03 mg/l followed by CAN (0.02 mg/l) Urea and NPK had 0.01 mg/l each. Bio slurry samples contained lower amounts of lead which was below detectable limit in chicken litter and pig wastes. Inorganic fertilizers contained Cd with the highest levels being in the phosphorous containing fertilizers DAP (0.41 mg/l) and NPK (0.48 mg/l). All samples contained Cr with the highest in bio slurry samples being 0.09 mg/l in cow dung collected from Githunguri. CAN had the highest level of Cr (0.08 mg/l) among the inorganic fertilizers. Bio slurry is a better alternative fertilizer in reducing heavy metal uptake and their subsequent bioaccumulation.

scholarly journals Farmer Awareness to the Dangers of Heavy Metal Cadmium (Cd) Pollution due to Over-Fertilization in Sragen Regency Central Java

2019 ◽  
Vol 34 (1) ◽  
pp. 76
Author(s):  
Visnu Pradika ◽  
Mohammad Masykuri ◽  
Supriyadi Supriyadi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Agricultural Land ◽  
Raw Material ◽  
Inorganic Fertilizers ◽  
Central Java ◽  
P Fertilizer ◽  
Quantitative Descriptive

P fertilization can add Cd metal content to agricultural land because the raw material for making P fertilizer comes from phosphate rock which naturally contains Cd metal. Farmers assume that by providing fertilizers with high doses can provide maximum results. Community’s knowledge of heavy metals in the environment is still low. This study aims to examine the awareness of farmers in Sragen Regency Central Java to the potential of heavy metal pollution that occurs. This research was conducted from July to December 2017. The type of this research is quantitative descriptive research using a questionnaire with the number of respondents amounting to 10% of the number of farmers, namely 30 farmers. The results show that about 61.11% of the community doesn’t understand that the presence of heavy metals in the environment can cause many problems. About 60% of the community doesn’t understand that the inorganic fertilizers commonly used by them contain heavy metals (especially Cd metal). People unaware of heavy metal pollution due to over-fertilization is 65.01%. Although the community's knowledge and awareness of heavy metals are still low, the community awareness about environmentally friendly agriculture is high (61.33%). About 53.34% of the community doesn’t know that their behavior in using inorganic fertilizers in the long term will increase the accumulation of Cd metal in agricultural land and rice plant tissue. About 70% of the community doesn’t know that agricultural land that is used continuously to plant (without interspersed with non-paddy crops) will cause land degradation.

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