scholarly journals Possibility of No-Input Farming in Lowland Rice Fields in Japan from the Viewpoint of Sustaining Soil Fertility

2020 ◽  
Author(s):  
Naoki Moritsuka
Keyword(s):  
Soil Fertility ◽  
Rice Fields ◽  
Lowland Rice

EVALUATION OF ON-FARM SOIL FERTILITY RESEARCH IN THE RAINFED LOWLAND RICE FIELDS OF SUKUMALAND, TANZANIA

2003 ◽  
Vol 39 (1) ◽  
pp. 65-79 ◽  
Author(s):  
H. C. C. MEERTENS ◽  
G. J. KAJIRU ◽  
L. J. NDEGE ◽  
H. J. ENSERINK ◽  
J. BROUWER
Keyword(s):  
Soil Fertility ◽  
Phosphorus Deficiency ◽  
Rice Fields ◽  
Lowland Rice ◽  
High Dose ◽  
Research Approach ◽  
Field Environment ◽  
Rainfed Lowland ◽  
Rice Yields ◽  
On Farm

The first ever on-farm soil fertility research in the rainfed lowland rice (Oryza sativa) fields of Sukumaland, in northwest Tanzania, was carried out between 1990 and 1996 in response to farmers' complaints about declining rice yields. From diagnosis to extension, the research approach followed that of the International Maize and Wheat Improvement Center (CIMMYT). In 1990/91, rice yields in the Maswa district increased sharply when nitrogen at a rate of 30 kg ha−1 in the form of urea was broadcast in flooded rice fields at tillering. Similar research was subsequently conducted in other parts of Sukumaland to evaluate this type of low-dose nitrogen application under varying circumstances. In 1995/96, higher doses of nitrogen (60 and 120 kg ha−1) and a high dose of phosphorus (17.5 kg ha−1) were applied for comparison in Sengerema district. Between 1990 and 1996, the average increase in rice yield from the application of 30 kg N ha−1 varied between 463 and 986 kg ha−1. In 1995/96, the same application of N was more economical than both 60 and 120 kg N ha−1, and no phosphorus deficiency was found. The deteriorating ratio between the price of rice at the farm gate and that of urea, however, threatens the adoption of this technology by farmers. Adaptability analysis showed that the relatively small differences in response per field (environment) in all years did not justify a need for multiple different extension messages. Until more detailed recommendations can be made, therefore, a single dose of 30 kg N ha−1, in the form of urea, applied to rice at tillering is recommended for the whole of Sukumaland to reverse the decline in yields. Further on-farm research should concentrate on improving the efficiency of nitrogen fertilization and on determining the optimum rates of other major nutrients to refine this initial recommendation.

scholarly journals Pengaruh Teknologi Pemupukan terhadap Kualitas Tanah, Pertumbuhan dan Hasil Padi Varitas Ciherang yang Ditanam pada Sawah Bukaan Baru di Dusun Kleseleon, Kabupaten Malaka, Nusa Tenggara Timur

2019 ◽  
Vol 8 (1) ◽  
pp. 1-10
Author(s):  
Sukristiyonubowo Sukristiyonubowo ◽  
Damasus Riyanto ◽  
Sugeng Widodo
Keyword(s):  
Soil Fertility ◽  
Soil Quality ◽  
Organic Fertilizer ◽  
Major Elements ◽  
Rice Fields ◽  
Lowland Rice ◽  
Organic C ◽  
Rice Growth ◽  
Acid Sulphate Soils ◽  
K Fertilizer

Sukristiyonubowo et al, 2019. The Influence of Fertilizer Technologies on Soil Quality, Rice Growth and Biomass Production of Ciherang Vareity Cultivated in Newly Developed Lowland Rice Fields of Kleseleon, Malaka District. JLSO 8(1):1-10.Highly weathered and potential acid sulphate soils are granted for newly developed lowland rice. They have many short comings including low in major elements and Fe and Mn in toxic levels. Study on soil fertility, rice growth and biomass productions of Ciherang variety planted in newly developed lowland rice was conducted in Kleseleon Village, Malaka District in 2014. The aim of study was to know the effect of technologies on soil fertility properties, rice growth and biomass productions.The experiment was started in February 2014 and harvested in June 2014. Five promising treatments were studied including: Farmers Practices, Package A : NPK recommended rate + 3 tons compost, Package B : NPK recommended rate + 2 tons compost + Bio fertilizer, Package C: ¾ recommended rate + 3 tons compost + Bio fertilizer and Package D: NPK recommended rate + 2 tons compost + Bio fertilizer, in which N, P and K were split two times: 50 % given at planting time and 50 % at 21 DAP. Two kilo gram composite soils from five points and ring samples of 0-20 cm in depth were taken in February 2014 for analyzing chemical, physical and biological parameters, before soil ploughing. The results indicated that the soil quality of newly developed low land rice fields in Kleseleon was low. These technologies increased the soil fertility including soil pH, soil organic C, available P and K extracted with HCl 25 %. In addition, the best technology was observed in package B (NPK Recommendation rate + 2 tons organic fertilizer + Bio fertilizer/SMART, in which N and K fertilizer were applied 3 times: 50 % at planting, 25 % at 21 HST and 25% before flowering) for tillers number and rice biomass productions. The yield reached 5.88 ± 0.29 and 4.84 ± 0.47 tons ha-1 season-1 for rice grains and rice straw, respectively.

scholarly journals Pengelolaan Hara Terpadu pada Lahan Sawah Tadah Hujan sebagai Upaya Peningkatan Produksi Beras Nasional

2020 ◽  
Vol 14 (1) ◽  
pp. 15
Author(s):  
Antonius Kasno ◽  
Diah Setyorini ◽  
I Wayan Suastika
Keyword(s):  
Soil Fertility ◽  
Total Content ◽  
Fertilizer Application ◽  
Rice Production ◽  
Rice Fields ◽  
Lowland Rice ◽  
Limiting Factors ◽  
Rainfed Rice ◽  
Balanced Fertilization ◽  
Rainfed Lowland

<p><strong>Abstrak</strong>. Beras merupakan makanan pokok bagi bangsa Indonesia dan strategis bagi keamanan pangan nasional. Produksi beras dapat ditingkatkan melalui ektensifikasi lahan, peningkatan mutu intensifikasi dan indeks pertanaman padi. Lahan sawah tadah hujan berpotensi besar untuk menjadi lahan pertanian produktif jika tingkat kesuburan tanahnya ditingkatkan melalui penerapkan pemupukan berimbang sesuai karakteristik tanahnya. Lahan sawah non irigasi seluas 3,30 juta ha, salah satunya adalah sawah tadah hujan. Pengembangan lahan sawah tadah hujan menjadi sangat relavan dengan peningkatan kebutuhan pangan nasional. Makalah ini bertujuan untuk menelaah pengelolaan lahan sawah tadah hujan untuk meningkatkan produksi padi nasional. Faktor pembatas yang sering dihadapi antara lain ketersediaan air hujan yang sulit diprediksi serta kesuburan tanah yang rendah akibat kandungan C-organik dan N-total yang rendah. Kegagalan panen dapat terjadi akibat akibat kekurangan air pada awal tanam musim hujan maupun saat menjelang panen pada musim kedua. Perbaikannya dapat dilakukan dengan tanam gogo rancah pada musim tanam pertama, dan sistem culik pada musim tanam ke dua. Pemberian bahan pembenah tanah seperti kompos jerami, pupuk kandang, <em>biochar</em> dan kapur pertanian/dolomit terutama untuk tanah yang bereaksi masam ditujukan untuk meningkatkan kesuburan tanah sebelum dilakukan pemupukan. Teknologi pemupukan berimbang yang dapat diterapkan pada lahan sawah tadah hujan, antara lain Urea 250-300 kg ha<sup>-1</sup>, SP-36 50-75 kg ha<sup>-1</sup>, dan KCl 50 kg ha<sup>-1</sup>, pemberian bahan organik minimal 2 t ha<sup>-1</sup>, serta pengembalian jerami sisa hasil panen ke dalam tanah. Pemupukan berimbang dapat meningkatkan hasil padi dari 1,8-3,5 t ha<sup>-1 </sup>menjadi 5,0-5,8 t ha<sup>-1</sup>.</p><p> </p><p><strong>Abstract</strong>. Rice is a staple food for the Indonesian people and a strategic comodity for national food security. Rice production can be increased through land extensification, improved quality of intensification and rice cropping index. Rainfed lowland rice fields could be very potentially productive for agriculture  when the level of soil fertility is improved by applying balanced fertilization that based on the soil characteristics. Non-irrigated rice field area is 3.30 million ha, including the rainfed rice fields. The development of rainfed rice fields is very relevant to the increasing national food needs. The goal of this paper is to examine the management of rainfed lowland rice fields to increase the national rice production. Some of the limiting factors are the unpredictable rainwater availability and low soil fertility due to low C-organic and N-total content. Harvesting failures could be caused by water stress at the beginning of the planting stage in the rainy season or just before harvesting in the second season. This could be prevented by planting upland scaffolding in the first planting season, and the kidnap system in the second growing season. The application of soil enhancers is intended to increase soil fertility before fertilizer application, such as straw compost, manure, biochar and agricultural lime or dolomite especially for acidic soils. Balanced fertilization technology that can be applied to rainfed lowland rice fields are Urea 250-300 kg ha<sup>-1</sup>, SP-36 50-75 kg ha<sup>-1</sup>, and KCl 50 kg ha<sup>-1</sup>, providing organic material at least 2 t ha<sup>-1</sup>, and the return of the remaining crop straw to the ground. Balanced fertilization can increase rice yield from 1.8-3.5 t ha<sup>-1</sup> to 5.0-5.8 t ha<sup>-1</sup>.</p>

scholarly journals Genus Alga pada Lahan Sawah Organik yang Ditanami Padi Lokal dan Inhibrida di Subak Jatiluwih, Tabanan

2019 ◽  
Vol 9 (2) ◽  
pp. 112
Author(s):  
SAWIDYA FITRIYANI ◽  
I WAYAN DANA ATMAJA ◽  
NI NENGAH SONIARI
Keyword(s):  
Soil Fertility ◽  
Research Method ◽  
Quantitative Method ◽  
Rice Fields ◽  
Most Probable Number ◽  
Water Sampling ◽  
Probable Number ◽  
Organic Rice ◽  
Soil And Water

Algae Genus in Organic Rice Fields Planted with Local and Inhibrida Rice in Subak Jatiluwih, Tabanan. The abundance of microalgae in rice fields, especially microalgae from Cyanophyta division that are capable of fixing nitrogen, is very important helping maintain soil fertility. The aim of this study was to find out the genus of algae in organic rice fields of Subak Jatiluwih, Tabanan. The research was conducted from September 2018 to April 2019. Sampling was done in Subak Jatiluwih. Algae breeding were carried out at Biology and Physics Laboratory, Faculty of Agriculture, Udayana University. This research method uses descriptive quantitative. The implementation of the research included the determination of location, soil and water sampling, identification of algae, and analysis of algae genera. Enrichment algae was carried out using the MPN method, results of the analysis of algae genus were found in 37 genera from 3 divisions i.e Chlorophyta, Cyanophyta and Chrysophyta. Descriptive quantitative method Most Probable Number (MPN) calculation conclude that there are not much different from the Local and Inhibrida rice fields. The maximum population algae of local rice fields is 1.100 cell g-1 and Inhibrida rice fields is >1.100 cell g-1 of land. The minimum population is 3,6 cell g-1 of land in local rice fields, and 9,2 cell g-1 of land in Inhibrida rice fields.

scholarly journals Improvement of Soil Fertility with Use of Indigenous Resources in Lowland Rice Systems

10.5772/53209 ◽  
2012 ◽  
Author(s):  
Satoshi Nakamura ◽  
Roland Nuhu ◽  
Israel K. ◽  
Monrawee Fukuda ◽  
Mohammed Moro ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Lowland Rice

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.

Near-infrared, mid-infrared or combined diffuse reflectance spectroscopy for assessing soil fertility in rice fields in sub-Saharan Africa

Geoderma ◽  
2019 ◽  
Vol 354 ◽  
pp. 113840 ◽  
Author(s):  
Jean-Martial Johnson ◽  
Elke Vandamme ◽  
Kalimuthu Senthilkumar ◽  
Andrew Sila ◽  
Keith D. Shepherd ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Diffuse Reflectance ◽  
Near Infrared ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Rice Fields ◽  
Sub Saharan Africa ◽  
Mid Infrared ◽  
Sub Saharan
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