scholarly journals Toposequential Variation in Soil Fertility and Rice Productivity of Rainfed Lowland Paddy Fields in Mini-Watershed(Nong)in Northeast Thailand

2003 ◽  
Vol 6 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Koki Homma ◽  
Takeshi Horie ◽  
Tatsuhiko Shiraiwa ◽  
Nopporn Supapoj ◽  
Naruo Matsumoto ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Paddy Fields ◽  
Northeast Thailand ◽  
Rice Productivity ◽  
Rainfed Lowland

scholarly journals Organic Amendments Boost Soil Fertility and Rice Productivity and Reduce Methane Emissions from Paddy Fields under Sub-Tropical Conditions

2021 ◽  
Vol 13 (6) ◽  
pp. 3103
Author(s):  
Md Mahamudul Haque ◽  
Juel Datta ◽  
Tareq Ahmed ◽  
Md Ehsanullah ◽  
Md Neaul Karim ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Ph ◽  
Soil Amendment ◽  
Organic Amendments ◽  
Rice Production ◽  
Inorganic Fertilizer ◽  
Paddy Fields ◽  
Rice Grain ◽  
Ch4 Emission ◽  
Rice Productivity

Deteriorating soil fertility and gradually decreasing rice productivity along with higher greenhouse gas emissions from paddy fields have emerged as serious threats to the sustainability of rice production and food security. Rice production in the subtropical environment in Bangladesh is mostly dependent on synthetic inorganic fertilizer to maintain productivity; however, the inorganic fertilizer has negative effects on global warming. Climate-smart and resilient agricultural production systems are major concerns nowadays to meet sustainable development goals. The study was conducted to evaluate the optimum rate and source of organic amendments on rice productivity and soil fertility along with CH4 emission. A total of nine nutrient combinations were used in the study. The CH4 emission, soil redox potential (Eh), soil pH, soil nitrogen and organic carbon, available phosphorus, rice grain and straw were greatly affected by the application of different rates and sources of the nutrient. However, the soil exchangeable K content, plant height, and harvest index were not affected. Among the treatments, the application of 75% recommended fertilizer (RF) + biosolid 2 t ha−1 (T3) was the most effective and showed the superior performance in terms of available P (12.90 ppm), the number of grains panicle−1 (121), and 1000-grain weight (24.6g), rice grain, and straw yield along with the moderate CH4 emission (18.25 mg m−2h−1). On the other hand, the lowest soil Eh (−158 mV) and soil pH (6.65) were measured from the treatment T3. The finding of this study revealed that the application of 75% of RF + biosolid 2 t ha−1 can be recommended as the preferable soil amendment for boosting rice yield, reduce CH4 emissions, and sustainably maintain soil fertility. Furthermore, this finding may help to introduce preferable soil amendment doses, which will contribute to boosting rice productivity and economic turnouts of the farmers.

scholarly journals Sustaining Rice Productivity, Soil Fertility, and Income from Prawn-Rice Joint Culture in the Gher System in Banglade

2020 ◽  
Vol 17 (2) ◽  
pp. 43-62
Author(s):  
Basanta Kumar Barmon ◽  
◽  
Sanzidur Rahman ◽  
Keyword(s):  
Soil Fertility ◽  
Household Income ◽  
Farming System ◽  
Real Income ◽  
Policy Implications ◽  
Soil Quality Index ◽  
Rice Productivity ◽  
Agricultural Income ◽  
Commercial Feeds ◽  
Over Time

This paper examines the long-term impacts of the joint prawn-rice gher farming system on agricultural and household incomes, soil fertility, and productivity of modern variety (MV) rice in southwestern Bangladesh, based on socioeconomic data of the gher farmers and soil fertility data of their gher plots. In 2005, 20 farmers operating on 30 plots were randomly selected from the Bilpabla village of Khulna from whom prawn and MV rice production data were collected using a questionnaire; soil samples were also collected and tested. In 2011 and 2017, the sustainability of the gher system over time was assessed through another survey of farmers following the same methodology. Results revealed that although the nominal income from gher farming increased by 59 percent in 2011 and 23 percent in 2017, the real income and per capita household income remained unchanged over time. Agricultural income has contributed about 65 percent to household income, which for gher farmers was about 200 percent higher than average rural incomes in Bangladesh. Rice productivity declined slightly from its 2005 level. However, the productivity of MV rice under prawn-rice gher farming is substantially higher than in the conventional MV rice farming system. The positive estimates of the Mean Soil Quality Index and Soil Degradation Index for land used for MV paddy production within the gher indicate an increase in soil nutrients. This suggests that the joint prawn-rice gher farming system is relatively sustainable, having improved soil fertility and stabilized real income. Policy implications toward promoting agricultural growth in the southwestern region of Bangladesh include research on developing varieties of MV rice suited to prawn-rice gher farming and the development of commercial feeds and markets for prawn to further raise productivity and incomes of gher farmers.

scholarly journals Justification of elements of rice cultivation technology

2020 ◽  
Vol 175 ◽  
pp. 01006 ◽  
Author(s):  
Nadezhda Malysheva ◽  
Anna Khadzhidi ◽  
Evgeny Kuznetsov ◽  
Noureldin Sharaby ◽  
Alexander Koltsov
Keyword(s):  
Soil Fertility ◽  
Crop Rotation ◽  
Rice Variety ◽  
Sprinkler Irrigation ◽  
Rice Fields ◽  
Water Soluble ◽  
Rice Crop ◽  
Soil Conditions ◽  
Rice Productivity ◽  
The Impact

The purpose of the research is to identify the impact of sprinkler irrigation in rice crop rotation on rice productivity and soil fertility of irrigated lands of the Krasnodar region. To achieve this goal, the tasks of studying the density of weed seedlings after sprinkler irrigation, the content of water-soluble salts and humus in the soil of rice fields, and the reaction of an intensive variety of rice cultivated after irrigation and drainage techniques in rice fields were completed. Material and methods. Field studies were carried out on the Kuban irrigation system of the Krasnodar territory, which is the most typical in terms of soil conditions for the western climatic zone of the region, with various variants for sprinkler irrigation after major planning of basins. An intensive of Rapan rice variety was used. The methods of the Federal Research Center for Rice, the Kuban State Agrarian University, and Russian standards were applied. Conclusions, the obtained results of the conducted studies prove the effectiveness of sprinkler irrigation in rice crop rotation, increase soil fertility, rice productivity, and contribute to the production of environmentally friendly products without herbicides treatment.

scholarly journals Effects of Soil Clay Content on Water Balance and Productivity in Rainfed Lowland Rice Ecosystem in Northeast Thailand

2007 ◽  
Vol 10 (2) ◽  
pp. 232-241 ◽  
Author(s):  
Mitsuru Tsubo ◽  
Shu Fukai ◽  
Jayampathi Basnayake ◽  
To Phuc Tuong ◽  
Bas Bouman ◽  
...  
Keyword(s):  
Water Balance ◽  
Clay Content ◽  
Lowland Rice ◽  
Northeast Thailand ◽  
Rainfed Lowland ◽  
Soil Clay ◽  
Soil Clay Content ◽  
Rice Ecosystem

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
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