scholarly journals Present Situations of Techniques for Paddy Rice Cultivation and Maintenance of Soil Fertility in Miyagi and Fukushima Prefectures

1982 ◽  
Vol 1982 (45) ◽  
pp. 25-29
Author(s):  
Tokuo SATO ◽  
Hiroshi SAKAI
Keyword(s):  
Soil Fertility ◽  
Paddy Rice ◽  
Rice Cultivation

Tracking the dynamics of paddy rice cultivation practice through MODIS time series and PhenoRice algorithm

2021 ◽  
Vol 307 ◽  
pp. 108538
Author(s):  
Nirajan Luintel ◽  
Weiqiang Ma ◽  
Yaoming Ma ◽  
Binbin Wang ◽  
Jie Xu ◽  
...  
Keyword(s):  
Time Series ◽  
Paddy Rice ◽  
Rice Cultivation ◽  
Cultivation Practice

scholarly journals Towards risk-based flood management in highly productive paddy rice cultivation – concept development and application to the Mekong Delta

2018 ◽  
Vol 18 (11) ◽  
pp. 2859-2876 ◽  
Author(s):  
Nguyen Van Khanh Triet ◽  
Nguyen Viet Dung ◽  
Bruno Merz ◽  
Heiko Apel
Keyword(s):  
Land Use ◽  
Flood Risk ◽  
Large Scale ◽  
Flood Hazard ◽  
Mekong Delta ◽  
Flood Management ◽  
Paddy Rice ◽  
Rice Cultivation ◽  
Spatially Explicit ◽  
Risk Maps

Abstract. Flooding is an imminent natural hazard threatening most river deltas, e.g. the Mekong Delta. An appropriate flood management is thus required for a sustainable development of the often densely populated regions. Recently, the traditional event-based hazard control shifted towards a risk management approach in many regions, driven by intensive research leading to new legal regulation on flood management. However, a large-scale flood risk assessment does not exist for the Mekong Delta. Particularly, flood risk to paddy rice cultivation, the most important economic activity in the delta, has not been performed yet. Therefore, the present study was developed to provide the very first insight into delta-scale flood damages and risks to rice cultivation. The flood hazard was quantified by probabilistic flood hazard maps of the whole delta using a bivariate extreme value statistics, synthetic flood hydrographs, and a large-scale hydraulic model. The flood risk to paddy rice was then quantified considering cropping calendars, rice phenology, and harvest times based on a time series of enhanced vegetation index (EVI) derived from MODIS satellite data, and a published rice flood damage function. The proposed concept provided flood risk maps to paddy rice for the Mekong Delta in terms of expected annual damage. The presented concept can be used as a blueprint for regions facing similar problems due to its generic approach. Furthermore, the changes in flood risk to paddy rice caused by changes in land use currently under discussion in the Mekong Delta were estimated. Two land-use scenarios either intensifying or reducing rice cropping were considered, and the changes in risk were presented in spatially explicit flood risk maps. The basic risk maps could serve as guidance for the authorities to develop spatially explicit flood management and mitigation plans for the delta. The land-use change risk maps could further be used for adaptive risk management plans and as a basis for a cost–benefit of the discussed land-use change scenarios. Additionally, the damage and risks maps may support the recently initiated agricultural insurance programme in Vietnam.

scholarly journals POPULASI DAN SERANGAN Cnaphalocrosis medinalis (LEPIDOPTERA; PYRALIDAE) PADA TANAMAN PADI SAWAH DI KABUPATEN MINAHASA TENGGARA

EUGENIA ◽  
2017 ◽  
Vol 23 (1) ◽  
Author(s):  
Moulwy F. Dien ◽  
Daisy S. Kandowangko
Keyword(s):  
Rice Field ◽  
Leaf Roll ◽  
Paddy Rice ◽  
Rice Cultivation ◽  
Paddy Fields ◽  
Survey Method ◽  
Vegetative Phase ◽  
The North ◽  
Average Population ◽  
Lepidoptera Pyralidae

ABSTRACTThe experiment was conducted using a survey method at 4 locations/district in the Southeast Minahasa Regency is Belang,Tombatu, North Tombatu, and East Tombatu. Each location/districts determined three paddy fields (repeats) as a place of observation and sampling. The study lasted for 10 months ie from January to October 2015. Sampling is done diagonally to the respective fields. So one rice field consists of 5 sub-plot as a point of sampling Samples are larvae present in the leaf roll. Implementation of the sampling carried out on rice plants vegetative phase once a week for 6 weeks. The results showed that the average population of C. medinalis (per-10 clumps) on paddy rice cultivation in Southeast Minahasa Regency highest found in the location of the North Tombatu 10.99, then Eastern Tombatu 10.44, Belang 10.43 and lows in the Tombatu 0.94. Observations of percentage of pests C. medinalis highest in Southeast Minahasa Regency found in the sample locations in the North Tombatu which reached 33.95%, Belang 32.51%, Eastern Tombatu 31.86%, and the lowest in the Tombatu 4.08%. Keywords : rice, Cnaphalocrosis medinalis

Environmental profile of paddy rice cultivation with different straw management

2014 ◽  
Vol 494-495 ◽  
pp. 119-128 ◽  
Author(s):  
Alessandra Fusi ◽  
Jacopo Bacenetti ◽  
Sara González-García ◽  
Annamaria Vercesi ◽  
Stefano Bocchi ◽  
...  
Keyword(s):  
Paddy Rice ◽  
Rice Cultivation ◽  
Straw Management ◽  
Environmental Profile

scholarly journals Assessment of Two Soil Fertility Indexes to Evaluate Paddy Fields for Rice Cultivation

2017 ◽  
Vol 9 (8) ◽  
pp. 1299 ◽  
Author(s):  
Bahareh Delsouz Khaki ◽  
Naser Honarjoo ◽  
Naser Davatgar ◽  
Ahmad Jalalian ◽  
Hosein Torabi Golsefidi
Keyword(s):  
Soil Fertility ◽  
Rice Cultivation ◽  
Paddy Fields

scholarly journals Studies on the Granular Herbicides for Paddy Rice Cultivation

1963 ◽  
Vol 1963 (2) ◽  
pp. 94-99
Author(s):  
Masuzi MIYAHARA ◽  
Masao ARAI
Keyword(s):  
Paddy Rice ◽  
Rice Cultivation
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