Residues of carbosulfan and its metabolites carbofuran and 3-hydroxy carbofuran in rice field ecosystem in China

2016 ◽  
Vol 51 (6) ◽  
pp. 351-357 ◽  
Author(s):  
Chang P. Zhang ◽  
Hong M. He ◽  
Jian Z. Yu ◽  
Xiu Q. Hu ◽  
Ya H. Zhu ◽  
...  
Keyword(s):  
Rice Field ◽  
Field Ecosystem

Residues and dynamics of pymetrozine in rice field ecosystem

Chemosphere ◽  
2011 ◽  
Vol 82 (6) ◽  
pp. 901-904 ◽  
Author(s):  
Cun Li ◽  
Ting Yang ◽  
Weiguo Huangfu ◽  
Yinliang Wu
Keyword(s):  
Rice Field ◽  
Field Ecosystem

scholarly journals Relation of macrofauna diversity and chemical soil properties in rice field ecosystem, Dukuhseti district, Pati regency, Indonesia

2020 ◽  
Vol 15 (2) ◽  
pp. 240-247
Author(s):  
Ramadhan Tanjung Denni ◽  
Alfian Agus ◽  
Winarno Joko ◽  
Retno Rosariastuti ◽  
Sumani Sumani ◽  
...  
Keyword(s):  
Soil Properties ◽  
Rice Field ◽  
Chemical Soil ◽  
Field Ecosystem

scholarly journals Food and Feeding Habits of the Mola Carplet Amblypharyngodon mola (Hamilton, 1822) in Rice Field Ecosystem with Consideration of Water Quality Parameters

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 61-75 ◽  
Author(s):  
Md. Mostafizur Rahman Mondol ◽  
Dil Afroz Nahar ◽  
Somen Dewan ◽  
Md. Mosaddequr Rahman ◽  
Saleha Jasmine ◽  
...  
Keyword(s):  
Water Quality ◽  
Rice Field ◽  
Feeding Habits ◽  
Quality Parameters ◽  
Gut Contents ◽  
Gut Content Analysis ◽  
Gut Content ◽  
Field Ecosystem ◽  
Food And Feeding ◽  
Plankton Population

The present investigation was conducted in the Agronomy field laboratory of Bangladesh Agricultural University, Mymensingh, Bangladesh during May 1999 to August 1999 to reveal the food and feeding habits of Amblypharyngodon mola in the rice field ecosystem. Percentage of frequency of occurrence and percentage in number methods were used for the qualitative and quantitative estimation of plankton population. Results showed that, during the present study, the water quality parameters were within the suitable range for optimal fish growth and plankton population was abundant in the water of the rice plots. Gut content analysis of A. mola revealed a sum of 32 genera of phytoplankton belonging to Chlorophyceae (17), Euglenophyceae (2), Cyanophyceae (7) and Bacillariophyceae (6) and 8 genera of zooplankton under Rotifera (3), Cladocera (2) and Copepoda (3). In general, Navicula, Fragilaria, Chlorella, Chrysococcus, Closterium, Oscillatoria and Gomphosphaeria were found abundant both in the water of the rice plots and in the gut contents of A. mola indicating that, these genera are preferred food of this fish in the rice field ecosystem. Gut content analysis also exposed that, phytoplankton was the major food item constituting 94.38% of the gut contents’ composition of A. mola whereas zooplankton comprised only 5.62%. The results of this study conclude that, the A. mola is planktivorous in nature, feeding mostly on phytoplankton and could be a suitable species for integrated rice-fish farming.DOI: http://dx.doi.org/10.3126/on.v11i1.8245 Our Nature Vol.11(1) 2013: 61-75

scholarly journals Ethnobotanical studies of weed plants in rice field ecosystem

1970 ◽  
pp. 12-14
Author(s):  
Arunesh A, Karuppaiah P, Ajish Muraleedharan
Keyword(s):  
Rice Field ◽  
Rice Production ◽  
Paddy Fields ◽  
Human Beings ◽  
Weed Plants ◽  
Field Ecosystem

Tamilnadu is one of the leading states in rice production in India. Weeds are widely found and are tremendously grown everywhere on paddy fields. Ethnobotany have gained importance during recent years. Based on this, an ethnobotanical exploration has been carried to find out the medicinal values of weed plants growing in the paddy fields of Annamalai Nagar, Cuddalore district. The study reveals the importance of the weed plants associated with paddy fields, a total of 40 species of weeds belonging to 22 families has been recorded in meeting the multiple requirements of human beings.

scholarly journals Methane emission and dynamics of methanotrophic and methanogenic communities in a flooded rice field ecosystem

2014 ◽  
Vol 88 (1) ◽  
pp. 195-212 ◽  
Author(s):  
Hyo Jung Lee ◽  
Sang Yoon Kim ◽  
Pil Joo Kim ◽  
Eugene L. Madsen ◽  
Che Ok Jeon
Keyword(s):  
Methane Emission ◽  
Rice Field ◽  
Flooded Rice ◽  
Field Ecosystem ◽  
Flooded Rice Field

scholarly journals Dissipation and residue of pymetrozine in rice field ecosystem

2015 ◽  
Vol 187 (3) ◽  
Author(s):  
Yanfeng Zhang ◽  
Li Zhang ◽  
Peng Xu ◽  
Jianzhong Li ◽  
Huili Wang
Keyword(s):  
Rice Field ◽  
Field Ecosystem

Colonizing ability in the Echinochloa crus-galli complex (barnyard grass). II. Seed biology

1983 ◽  
Vol 61 (2) ◽  
pp. 556-562 ◽  
Author(s):  
Spencer C. H. Barrett ◽  
Blake F. Wilson
Keyword(s):  
Rice Field ◽  
Seedling Emergence ◽  
Rice Fields ◽  
Barnyard Grass ◽  
Control Practice ◽  
Seed Biology ◽  
Field Ecosystem ◽  
The Difference ◽  
Germinating Seeds ◽  
Colonizing Ability

Comparisons of some seed parameters of two taxa of barnyard grass (Echinochloa crus-galli complex) were made in an effort to understand differences in habitat preference and colonizing ability. The taxa were E. crus-galli var. crus-galli, a cosmopolitan weed of wet, disturbed ground and E. crus-galli var. oryzicola, a crop mimic restricted to rice fields. In California, where all seed collections originated, the two taxa are ecologically differentiated within the rice-field ecosystem. Echinochloa crus-galli var. crus-galli is a weed of paddy banks and shallow water around the periphery of rice fields whereas E. crus-galli var. oryzicola is found primarily within permanently flooded rice fields. A survey of seed weight in 10 populations of each of the two taxa demonstrated that seeds of E. crus-galli var. oryzicola were on the average two to three times heavier than those of E. crus-galli var. crus-galli. Differences in weight were reflected in the buoyancy characteristics of fresh seeds of the two taxa. Approximately 50% of E. crus-galli var. crus-galli seeds remained afloat after 4–5 days in water whereas during the same period over 95% of the seeds of E. crus-galli var. oryzicola had sunk. Germination tests on 9- and 18-month-old seeds of 18 populations of E. crus-galli var. crus-galli and 11 populations of E. crus-galli var. oryzicola revealed significant differences between the taxa in the number of germinating seeds. The decay of dormancy in E. crus-galli var. oryzicola was more rapid than in E. crus-galli var. crus-galli following dry storage and burial in soil. The difference results in the greater germination synchrony of the crop mimic in comparison to the widespread weed. Emergence of seedlings from saturated and flooded soils was compared in the two taxa. In all treatments E. crus-galli var. oryzicola exhibited significantly greater levels of seedling emergence. The differences may explain changes in abundance of the two taxa in California rice fields, following the introduction of permanent flooding as a weed control practice, as well as their current microdistribution within the rice-field ecosystem.

scholarly journals An inventory of Tortoise Beetles (Cassidinae) in Post Harvest Rice Field Ecosystem Area, Serdang Menang Village, Sirah Pulau Padang Sub-District.

2018 ◽  
Author(s):  
Ari Sugiarto
Keyword(s):  
Sampling Method ◽  
Rice Field ◽  
Sampling Location ◽  
Post Harvest ◽  
Major Threat ◽  
Field Ecosystem

Abstract Diversity of plants species in post harvest rice field ecosystem area tends to be higher compared to before harvest. Tortoise beetles can be a threat to plants species that exist in rice field ecosystem area. Serdang Menang Village has a fairly extensive rice field ecosystem area. An inventory of tortoise beetles in rice field ecosystem area, Serdang Menang Village will be very helpful in potential estimating of tortoise beetles to plants that exist in rice field ecosystem area, Serdang Menang Village. Determination of this sampling location was done randomly in post harvest rice field ecosystem area, Serdang Menang Village. The sampling method uses small insecting net and hand picking methods. Species of tortoise beetles found were 5 species (Aspidomorpha miliaris, Cassida subreticulata, Cassida circumdata, Cassida sp., dan Doloyala sp.) of a total 3 genera. Cassida circumdata and Aspidomorpha miliaris is tortoise beetles species that easiest to be found in this rice field ecosystem area which indicates that population is more than any species of tortoise beetles found. Cassida circumdata and Aspidomorpha miliaris can be major threat in rice field ecosystem area compared any species of tortoise beetles that found because a population is estimated to be more.

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