Mechanism of Free Ground Water in Paddy Field Area

1964 ◽  
Vol 5 (4) ◽  
pp. 169-182
Author(s):  
Tatsuo Shibasaki ◽  
Hiroyasu Furukawa
Keyword(s):  
Ground Water ◽  
Paddy Field ◽  
Field Area

scholarly journals Pengaruh Pasang Surut terhadap Pengendapan Lumpur di Lahan Sawah Rawa Kawasan Sungai Barito Kalimantan Selatan

2019 ◽  
Vol 38 (3) ◽  
pp. 273
Author(s):  
M Mawardi ◽  
Putu Sudira ◽  
Bambang Hendro Sunarminto ◽  
Totok Gunawan ◽  
Benito Hadi Purwanto
Keyword(s):  
Paddy Field ◽  
The Other ◽  
Climate Condition ◽  
Tidal Amplitude ◽  
Land Area ◽  
Marine Clay ◽  
Clay Deposit ◽  
Soil Nutrition ◽  
The Difference ◽  
Field Area

Swamp land has a great potential to be developed as a paddy field area. However it has many constraints such as-phyrite (FeS2) at the depth of 30–60 cm and lack of soil nutrition. On the other hand, supply of marine clay from the sea which contains a lot of smektit clay mineral can be used to netralize this condition. Mud clay is very important for the development of rice root because it contains much nutrition and to enlarge the top of soil reducing the oxidation of phyrite. This study was conducted from January 2016 to June 2017 in swamp land area of Barito River of South Kalimantan. Data was collected by measuring the difference between maximum and minimum sea tide (tidal amplitude) and the deposition of mud clay. The results indicated that the distribution of mud clay deposit vary depends on the geography and the tidal amplitude of the zone. Zone VII has higher concenration of mud clay than the other one. The distribution pattern of mud clay deposit follows the parabola type, verticaly and horizontaly type, as well. Increasing of mud clay at all of the zone areas are not significantly effected by the daily tidal amplitude, only depends on climate condition/the season change.

COMPARATIVE STUDY OF INUNDATION ANALYSIS MODELS IN LOW-LYING PADDY FIELD AREA

2020 ◽  
Vol 76 (2) ◽  
pp. I_145-I_150
Author(s):  
Noriko TAKIGAWA ◽  
Haruya TANAKAMARU ◽  
Akio TADA
Keyword(s):  
Comparative Study ◽  
Paddy Field ◽  
Analysis Models ◽  
Field Area

scholarly journals Evaluation of atmospheric correction algorithms for Sentinel-2 over paddy field area

2020 ◽  
Vol 500 ◽  
pp. 012081
Author(s):  
Kurnia Ulfa ◽  
Hendayani ◽  
Masnita Indriani Oktavia ◽  
Kuncoro Adi Pradono ◽  
Liana Fibriawati ◽  
...  
Keyword(s):  
Paddy Field ◽  
Atmospheric Correction ◽  
Field Area ◽  
Sentinel 2

Developing the temporal composite of Sentinel-1 SAR data to identify paddy field area in Subang, West Java

2019 ◽  
Author(s):  
Kustiyo Kustiyo ◽  
. Rochmatulloh ◽  
Adhi Harmoko Saputro ◽  
Donny Kushardono
Keyword(s):  
Paddy Field ◽  
West Java ◽  
Sar Data ◽  
Field Area

scholarly journals Nitrate Cioncentration in Ground Water Around Paddy Field.

1992 ◽  
Vol 15 (12) ◽  
pp. 924-927 ◽  
Author(s):  
Hiroyuki KAWASHIMA ◽  
Akito TSUMURA ◽  
Nobuharu KIHOH ◽  
Shinichi YAMASAKI ◽  
Kunihiro FUJII
Keyword(s):  
Ground Water ◽  
Paddy Field

scholarly journals Survival and Subsequent Dispersal of Rice Sclerotial Disease Fungi, Rhizoctonia oryzae and Rhizoctonia oryzae-sativae, in Paddy Fields

Plant Disease ◽  
2006 ◽  
Vol 90 (5) ◽  
pp. 615-622 ◽  
Author(s):  
Qingyuan Guo ◽  
Akiko Kamio ◽  
Bhim Sen Sharma ◽  
Yukiko Sagara ◽  
Masao Arakawa ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Paddy Field ◽  
Maturation Stage ◽  
Disease Development ◽  
Field Isolates ◽  
Rice Plants ◽  
Growing Seasons ◽  
Rhizoctonia Oryzae ◽  
Mycelial Compatibility ◽  
Field Area

In 1998 to 2001, a commercial rice (Oryza sativa) paddy field (area: ca. 0.14 ha) was surveyed for Rhizoctonia oryzae and R. oryzae-sativae, causal agents of bordered sheath spot and brown sclerotium disease of rice plants, respectively, to determine their survival in soil and stubble during the pretransplanting season, and the effect on disease development during the maturation season of rice. Then, infection by these fungi of weeds belonging to 17 families, which grew in the four neighboring fields, was examined during rice growing seasons. All field isolates of the fungi from soil, stubble, rice sclerotial disease lesions (diseased tissues), and weeds were assorted into mycelial compatibility groups (MCGs) based on the barrage zone reaction of paired isolates. In R. oryzae, 3 to 8 MCGs were annually found from soil/stubble, 2 to 4 MCGs from rice bordered sheath spot lesions, and 4 to 9 MCGs from 4 to 14 weeds. MCGs common to both soil/stubble and diseased tissues, soil/stubble and weeds, and diseased tissues and weeds numbered 1 to 2 in all cases. In R. oryzae-sativae, MCGs common to both soil/stubble and brown sclerotium disease lesions, and soil/stubble and weeds, numbered 1 to 4 and 0 to 5, respectively. In R. oryzae and R. oryzae-sativae, a few MCGs were common to soil/stubble, diseased tissues and weeds, and some were also common to diseased tissues in 1998 and soil/stubble in 1999, or weed in 1998 and diseased tissues in 1999. Members belonging to a single MCG from rice diseased tissues were detected from maximally five weeds growing in the neighboring fields. These results indicate that fungi that had caused sclerotial diseases at the maturation stage of rice plants survived on and in soil and stubble until the pretransplanting season of the next year, followed by wide dispersal in and out of fields and by infection and disease development on rice plants and various weeds.

scholarly journals Mechanism of Nitrate Cioncentration Change in the Ground Water under the Paddy Field.

1993 ◽  
Vol 16 (2) ◽  
pp. 108-113
Author(s):  
Hiroyuki KAWASHIMA ◽  
Akito TSUMURA ◽  
Nobuharu KIHOH ◽  
Shinichi YAMASAKI ◽  
Kunihiro FUJII
Keyword(s):  
Ground Water ◽  
Paddy Field

scholarly journals PERUBAHAN PENGGUNAAN LAHAN DAN POTENSI PERLUASAN LAHAN UNTUK SAWAH DI KABUPATEN CIANJUR

2019 ◽  
Vol 19 (1) ◽  
pp. 33-40
Author(s):  
Chaida Chairunnisa ◽  
Khursatul Munibah ◽  
Widiatmaka Widiatmaka
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Paddy Field ◽  
Agricultural Land ◽  
Landsat Imagery ◽  
Land Suitability ◽  
Limiting Factor ◽  
Land Use Land Cover ◽  
Land Use Plan ◽  
Field Area

Population growth, increasing income, and the rapid economic development create complexity of land issues. Land has a central role in  food production, however demand for land increased significantly to meet the needs of the population. Cianjur Regency is one of regencies in the southern part of West Java Province with the largest paddy field area. However, paddy field conversion into non agricultural land or another agricultural land resulted in the decrease of paddy field area. Therefore, in the context of maintaining the availability of rice in Cianjur Regency, this study aimed to: (1) analyze the patterns of land use/land cover, (2) evaluate land suitability for paddy field, and (3) analyze the potency of land for paddy field expansion. Land use change was identified using Landsat imagery of 2000 and 2015 by using fusion techniques. Land suitability for paddy field was analyzed using limiting factor method. Potential for paddy field expansion was analyzed according to land suitability and agricultural land allocation in official regional land use plan map (“RTRW”). The results showed that in the period of 2000 to 2015, most of paddy field were converted into settlements. Land suitability classes for paddy field in Cianjur Regency were not suitable (N) (61.19%), suitable (S2) (9.53%), and marginally suitable (S3)(29.28%). Cianjur Regency still has the potency of land to be used for paddy field expansion of 148,980 ha. Keywords: Land use change, potential area for paddy field priority, land suitability for paddy field

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