Effects of humic acid on japonica rice production under different irrigation practices and a TOPSIS-based assessment on the Songnen Plain, China

2021 ◽  
Author(s):  
Ennan Zheng ◽  
Yinhao Zhu ◽  
Jianyu Hu ◽  
Zhongxue Zhang ◽  
Tianyu Xu
Keyword(s):  
Humic Acid ◽  
Rice Production ◽  
Japonica Rice ◽  
Songnen Plain ◽  
Irrigation Practices

scholarly journals Effects of Humic Acid-Irrigation Coupling Techniques on Temperature, Radiation and Rice Growth in Songnen Plain China

2021 ◽  
Author(s):  
Ennan Zheng ◽  
Yinhao Zhu ◽  
Jianyu Hu ◽  
Tianyu Xu ◽  
Zhongxue Zhang
Keyword(s):  
Humic Acid ◽  
Agricultural Soils ◽  
Application Rate ◽  
Growth Stages ◽  
Songnen Plain ◽  
Irrigation Methods ◽  
Fluorescence Characteristics ◽  
Coupling Techniques ◽  
Temperature Radiation ◽  
Different Growth Stages

Abstract In the past decades, the application of organ fertilizer in agricultural soils has attracted wide attention. However, few studies have carefully explored the effects of humic acid on soil and canopy temperature, radiation, the physiological process of plant leaves, especially coupling with the different irrigation methods. To provide a better growing environment for crops and explore the best regulation mode of humic acid and irrigation coupling techniques in the farmland soil environment in the Songnen Plain Heilongjiang Province, through field experiment, we selected rice as the test crop and applied humic acid in the soil with different irrigation methods. The temperature conditions, radiation, agronomic and fluorescence characteristics were monitored by different stages. The effects of different humic acid and irrigation coupling techniques on the temperature and radiation changes during different growth stages were discussed, and the subtle differences of agronomic and fluorescence characteristics in different growth stages of rice plants were compared. The results showed that the humic acid application with different irrigation methods was not beneficial to the maintenance of soil temperature, the differences among the different treatments, were no found significant at 5% probability statistically. However, the differences of radiation interception was obvious, and the best value was CT5 treatment, there were also similarities to plant height. The fluorescence indexes and leaf chlorophyll relative content (SPAD) had the differences with the change of humic acid application rate and irrigation methods. Over all, under the humic acid application rate of 1500 kg·ha-1 with the control irrigation method, could bring the best humic acid and irrigation effects.

Improving performance of Agro-Ecological Zone (AEZ) modeling by cross-scale model coupling: An application to japonica rice production in Northeast China

2014 ◽  
Vol 290 ◽  
pp. 155-164 ◽  
Author(s):  
Zhan Tian ◽  
Honglin Zhong ◽  
Laixiang Sun ◽  
Günther Fischer ◽  
Harrij van Velthuizen ◽  
...  
Keyword(s):  
Northeast China ◽  
Rice Production ◽  
Scale Model ◽  
Model Coupling ◽  
Japonica Rice ◽  
Ecological Zone

scholarly journals Field Fungal Diversity in Freshly Harvested Japonica Rice

2019 ◽  
pp. 1-14 ◽  
Author(s):  
Xiang Dong Sun ◽  
Hong Shan ◽  
Jing Lan ◽  
Li Li Li ◽  
Hai Tao Guan ◽  
...  
Keyword(s):  
Fungal Diversity ◽  
High Throughput Sequencing ◽  
Fungal Species ◽  
Climatic Conditions ◽  
Rice Production ◽  
Gibberella Zeae ◽  
Japonica Rice ◽  
Heilongjiang Province ◽  
Significant Difference ◽  
The Difference

Rice is a major food crop in China and Japonica rice production in Heilongjiang Province ranks No.1 in total annual rice production in the country. Rice is prone to invasion by fungi and mycotoxins produced by the fungi are proven to be serious threats to human health. The objective of the present study was to investigate fungal diversity of freshly harvested rice in the four main cultivation regions of Heilongjiang Province in order to find the difference of dominant fungi among the four regions. Through high throughput sequencing we detected Ascomycota accounts for absolute dominant phylum; Dothideomycetes, Sordariomycetes, Tremellomycetes, Microbotryomycetes, and Eurotiomycetes were dominant classes; Capnodiales, Hypocreales, and Pleosporales were the main orders; Cladosporiaceae, Pleosporaceae, Nectriaceae, Clavicipitaceae, Tremellaceae, Phaeosphaeriaceae, Trimorphomycetaceae, Sporidiobolaceae, Bionectriaceae, and Trichocomaceae were major family; Cladosporium, Epicoccum, Fusarium, and Alternaria were the most abundant phylotypes at genus level; Epicoccum nigrum, Gibberella zeae, and Fusarium proliferatum were the dominant fungal species. Great fungal diversity was observed in the rice samples harvested in the four major Japonica rice-growing regions in Heilongjiang province. However, no significant difference in diversity was observed among the four regions, likely due to the relatively close geographical proximity leading to very similar climatic conditions. Since some of the fungal species produce mycotoxins, it is necessary to take precautions to ensure the rice is stored under safe conditions to prevent the production of mycotoxins. This is the first report on investigation of field fungal diversity in freshly harvested Japonica rice in Heilongjiang Province in China.

scholarly journals Production Costs and Benefits of Japonica Rice in Mwea, Kenya

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 629
Author(s):  
Mamoru Watanabe ◽  
Yutaka Sumita ◽  
Issaku Azechi ◽  
Kengo Ito ◽  
Keigo Noda
Keyword(s):  
Cost Benefit Analysis ◽  
Market Price ◽  
Cost Benefit ◽  
Rice Production ◽  
Production Costs ◽  
Small Scale ◽  
Japonica Rice ◽  
Costs And Benefits ◽  
Production Stage ◽  
Small Scale Farmers

From the perspective of national food security, strengthening domestic rice production is an urgent issue for Kenya. For this purpose, it is helpful to consider varieties that generate novel and competitive values different from those of conventional varieties. Recently, domestic japonica rice, which is now being distributed, has become an attractive variety with a high market price and its production is expected to increase. Although it is competitive and promising as a crop for small-scale farmers, the production stage costs and benefits are not clear. Thus, a study was conducted to perform a cost–benefit analysis of japonica rice in comparison to conventional rice at the production stage and evaluate strategies for strengthening the domestic production of rice. We conducted an experimental cultivation of japonica rice in the Mwea region, Kenya, where japonica rice is produced. As a result, although production costs for japonica rice are higher than costs for conventional varieties (24.46 KSh/kg versus 22.63 KSh/kg), when a high-yielding variety is grown (6.44 tons/ha for japonica rice compared to 6.07 tons/ha for conventional rice), a larger net profit can be obtained (65.54 KSh/kg versus 32.37 KSh/kg). We believe that initiatives to improve difficulties at the production stage would make the production of both japonica rice and conventional rice more economically viable and facilitate strengthening of the overall domestic rice production.

scholarly journals EFEK SISA ASAM HUMAT DARI KOMPOS ALANG-ALANG DAN PENGELOLAAN AIR DALAM MENGURANGI KELARUTAN BESI (FE) PADA TANAH SAWAH BUKAAN BARU

Jurnal Solum ◽  
2007 ◽  
Vol 4 (2) ◽  
pp. 63
Author(s):  
Herviyanti Herviyanti ◽  
Gusnidar Gusnidar ◽  
Rina Alfina
Keyword(s):  
Water Management ◽  
Humic Acid ◽  
Dry Weight ◽  
Rice Production ◽  
Minor Factor ◽  
Split Plot

The research about residue effect of humic acid from imperata compost and water management to decrease the dissolved of iron (fe) on recently used ricefield had been conducted from march till august 2007.  The objective is to study residue effect of humic acidity aplication and water management to controlling Fe and to increase rice production on recently used ricefield.  The experiment using design factorial 2 x 4 with three replication wich is place as the split plot.  The major factor is water management consisted of two treatment, thos were continously flooded (P1) and flooded and dried (intermittence) with two week interval (P2). The minor factor are four level from residue effect of humic acid  (0, 200, 400, 600 ppm).  The result of this study can provided the information that residue effect of humic acid at 600 ppm can reduce solubility of Fe2+ from 327,91 to 37,53 ppm for continously flooded and from 173,51 to 38,13 ppm for intermitten flooded. And the yield of rice (dry weight of 1000 grain ad straw) increase as much as 4,9 and 5,38 g with residue effect of humic acid at 600 ppm combination with intermittence flooded.Key word : humic acid, iron, recently used ricefield, intermittence, flooded.

scholarly journals Web-Based Decision Support System for Japonica Rice Cultivation in West Java Province, Indonesia

2019 ◽  
pp. 363-372
Author(s):  
Taufiq Yuliawan ◽  
Handoko NA ◽  
Impron NA ◽  
Hiroki Oue
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Rice Cultivar ◽  
Crop Model ◽  
Rice Production ◽  
Japonica Rice ◽  
West Java ◽  
Web Based ◽  
International Trading

Indonesia has a potency for planting Nikomaru, a japonica rice cultivar that has a capability for tolerating a high air temperature due to a chance for international trading, mainly to Japan. Developing a crop model to know the potency of Nikomaru in Indonesia based on the climate condition is an easier step than doing direct planting. A Decision Support System (DSS) was expected to help Indonesian farmers to decide their plantation. A field experiment was needed to develop and evaluate a crop model for predicting rice production. A web-based DSS developed for simulating some scenarios to know the potency of Nikomaru in West Java Province, Indonesia. Bogor Regency and Bandung Regency were selected area due to a higher rice production than the other places. Both of them would face dry periods. Bandung Regency will face the worst dry period in the first scenario.

scholarly journals Water-saving irrigation practices for rice yield information and nitrogen use efficiency under sub-tropical monsoon climate

2019 ◽  
Vol 19 (8) ◽  
pp. 2485-2493 ◽  
Author(s):  
Zheng Huabin ◽  
Zhou Wei ◽  
Chen Qimin ◽  
Chen Yuanwei ◽  
Tang Qiyuan
Keyword(s):  
Nitrogen Use Efficiency ◽  
Water Saving ◽  
Rice Production ◽  
Production Model ◽  
Nitrogen Use ◽  
Nitrogen Reduction ◽  
Production Models ◽  
Significant Difference ◽  
Use Efficiency ◽  
Irrigation Practices

Abstract Simple and practical water-saving irrigation practices (WIP) with nitrogen-reduction are beneficial to the development of rice cultivation technology with promotion of resource-conservation and environmental friendliness. The effects of WIP with nitrogen-reduction on population quality, annual yield and nitrogen use efficiency were studied by a field experiment. WIP could maintain or increase the annual yield of rice production models. The highest annual yield of more-water-saving irrigation practice (WIP150) was 8.42 t hm−2 for the double-season rice production model and 12.71 t hm−2 for the ratoon rice production model, respectively. Compared with non-application of nitrogen, the annual yield of nitrogen-reducing practice (NRP) and farms' fertilizer practice (FFP) increased significantly (p < 0.01), while a non-significant difference of annual yield between the FFP and NRP was observed; the annual yield of the NRP and FFP was 9.73 and 10.02 t hm−2 of the double-season rice production model, and 12.84 and 14.34 t hm−2 of the ratoon rice production model, respectively. AEN, PEN, PFPN and RUEN of the NRP were higher than those of the FFP. Therefore, observing the change of water layer in the soil layer via a simple self-made PVC indicator tube, reducing about 20% nitrogen quantity was a feasible and simple cultivation technique for water-saving and nitrogen-reduction in the rice production models.

scholarly journals Technical Efficiency of Chemical Fertilizer Use and Its Influencing Factors in China’s Rice Production

2021 ◽  
Vol 13 (3) ◽  
pp. 1155
Author(s):  
Zhilu Sun ◽  
Xiande Li
Keyword(s):  
Technical Efficiency ◽  
Influencing Factors ◽  
Negative Impact ◽  
Indica Rice ◽  
Rice Production ◽  
Chemical Fertilizer ◽  
Agricultural Product ◽  
Systematic Research ◽  
Japonica Rice ◽  
Fertilizer Use

Low technical efficiency and excessive usage of chemical fertilizer in grain production is a problem commonly faced by China and many other developing countries, which leads to serious environment pollution and high environmental governance cost. China is the largest rice producing and consuming country, and several kinds of rice are grown in China and all of which are important edible grain. However, there has been no systematic research on kind difference and provincial difference of technical efficiency of chemical fertilizer use (TEFU) for rice production. Using the data of China’s 22 rice production provinces from the China Agricultural Product Cost-Benefit Compilation and the China Statistical Yearbook, this study measures the TEFU for early indica rice, intermediary indica rice, late indica rice, and japonica rice production by using a stochastic frontier production function (SFPF) model, and then analyzes TEFU’s influencing factors using a Tobit model and conducts the robustness check using a panel data fixed effect model. We found that, on average, TEFU for four kinds of rice production were improved significantly during 1997–2018, increasing by 67.70%, 39.93%, 14.76%, and 21.88%, respectively. TEFU for China’s rice production have significant differences among different kinds and production provinces, and still have large improvement potential. Government’s fiscal support to agriculture, agricultural labor productivity, agricultural mechanization, effective irrigation, and implementation of the “Soil Testing and Formulated Fertilization Program” (STFFP) have significant positive impact on TEFU; and natural disaster and fertilizer price have significant negative impact on TEFU.

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