scholarly journals Occurrence of American Tadpole Shrimp, Triops longicaudatus(LeConte), in Paddy Fields Cultivated under Conventional and Organic Farming Methods.

1999 ◽  
Vol 43 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Kenji Hamasaki
Keyword(s):  
Organic Farming ◽  
Paddy Fields ◽  
Triops Longicaudatus ◽  
Tadpole Shrimp

scholarly journals Keanekaragaman Makroarthropoda Tanah di Lahan Persawahan Padi Organik dan Anorganik, Desa Bakalrejo Kecamatan Susukan Kabupaten Semarang

2015 ◽  
Vol 17 (1) ◽  
pp. 21
Author(s):  
Roma Witriyanto ◽  
Mochamad Hadi ◽  
Rully Rahadian
Keyword(s):  
Organic Farming ◽  
Negative Impact ◽  
Research Area ◽  
Paddy Fields ◽  
Post Harvest ◽  
Rice Growth ◽  
Synthetic Chemicals ◽  
Residual Hazard ◽  
Set Up ◽  
The Impact

Inorganic paddies system has a negative impact as pests become resistant, environmental pollution and residual hazard. People who are aware of the impact of the application of synthetic chemicals have been applying organic farming. This research aimed to compare the abundance, diversity and dominance of soil macroarthropods  in the organic and inorganic paddies field in Village Bakalrejo, Susukan District of Kabupaten Semarang. Sampling of soil macroarthropods method used pit fall traps . Fifteen pit fall traps were set up in the research area and they were divided into three line whith respective line are 5 pit fall traps. Soil macroarthropods  which has been found were identified up to family taxon. The results of the research shows abundance of soil macroarthropods organic rice in paddy fields higher (297) than in inorganic paddy fields (236). Diversity of soil macroarthropods in every phase of rice growth (vegetative, reproductive, ripening and post-harvest) was higher in organic paddy fields (1,479; 1,644; 1,561; 1,019) than inorganic paddy fields (1.391; 0.595; 1.286; 1.002). Based on the relative abundance index, soil macroarthropods family dominated organic paddy fields in every phase of rice growth (vegetative, reproductive, ripening, and post-harvest) was lower (Gryllidae: 39.4%; Carabidae: 46.7%; Formicidae: 44.1 %; Formicidae: 48.8%) than in the inorganic paddy fields (Carabidae: 35.5%; Carabidae: 57.4%; Formicidae: 56.3%; Formicidae: 77.6%). Key words :  biodiversity, soil macroarthropods, organic farming.

Effect of Rice Winter Cultural Management Practices on the Size of the Hatching Population of Triops longicaudatus (Notostraca: Triopsidae) in California Rice Fields

2020 ◽  
Vol 113 (3) ◽  
pp. 1243-1247
Author(s):  
Joanna B Bloese ◽  
Kevin M Goding ◽  
Larry D Godfrey
Keyword(s):  
Rice Straw ◽  
Management Practices ◽  
Cultural Practices ◽  
Straw Decomposition ◽  
Cultural Management ◽  
Triops Longicaudatus ◽  
Rice Pest ◽  
Tadpole Shrimp ◽  
Winter Flooding ◽  
The University

Abstract The tadpole shrimp [Triops longicaudatus (Leconte)] has emerged as a significant pest of rice grown in California in recent decades. The change in T. longicaudatus’ pest status has coincided with changes in cultural management of residual rice straw postharvest. Policy changes have reduced the postharvest burning of fields from nearly 95% to less than 10%, promoting increased use of winter flooding as a means of accelerating straw decomposition. Field and laboratory trials were conducted from 2015 to 2017 at the Rice Experiment Station in Biggs, CA and in greenhouses at the University of California (UC) Davis to evaluate the effects of burning, flooding, and a fallow control on T. longicaudatus population dynamics. Experiments demonstrated that burning of rice straw failed to suppress densities of hatching T. longicaudatus and actually had the reverse effect, causing a 51% increase in numbers hatching, perhaps as a result of burning triggering termination of multiyear T. longicaudatus egg dormancy. Winter flooding had no measurable effect on T. longicaudatus hatch. Thus, these changes in winter cultural practices do not appear to be responsible for the emergence of T. longicaudatus as a major rice pest.

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