scholarly journals Soil fertility management for organic rice production in the Lao PDR

2006 ◽  
Vol 21 (4) ◽  
pp. 253-260 ◽  
Author(s):  
W. Roder ◽  
S. Schürmann ◽  
P. Chittanavanh ◽  
K. Sipaseuth ◽  
M. Fernandez
Keyword(s):  
Soil Fertility ◽  
Green Manure ◽  
Crop Residues ◽  
Production Systems ◽  
Upland Rice ◽  
Lao Pdr ◽  
Rice Production ◽  
Inorganic Fertilizer ◽  
Fertility Management ◽  
Organic Rice

AbstractRice is the most important agricultural commodity of the Lao People's Democratic Republic (Lao PDR), produced largely using traditional methods with limited inputs of fertilizers and other chemicals. The country has a wide diversity in rice production systems and rice varieties, with over 3000 different varieties recorded. The rich diversity and the production environment and methods are favorable for organic rice production. Investigations were carried out to describe soil fertility conditions, management practices, opportunities and problems associated with organic production methods for rice. Soils used for rice production are mostly of low fertility, with low organic matter and N-availability. In spite of this, virtually no fertilizer inputs are used for upland rice production. Inorganic fertilizer inputs for lowland rice production have increased rapidly over the past decade, but are still below 20 kg ha−1. The most important nutrient sources are rice straw and manure from buffalo and cattle. Chromolaena odorata plays an important role in nutrient cycling in upland rice systems and is sometimes added to lowland fields. In a range of fertility management studies, yield increase ranged from 2 to 89% for manure, straw or rice husk applied at modest rates (3 t ha−1), 32–156% for modest rates of inorganic fertilizer (60 kg N ha−1) and 36–167% for combined application of manure or crop residues with inorganic fertilizer. The response to locally produced commercial organic fertilizer was poor. The most promising inputs and strategies available to optimize yields in organic rice production systems are (1) optimizing use of locally available nutrients, mostly from manure, crop residues and weed biomass, (2) N addition through green manure and legumes growing in rotation and (3) additions of P through guano or rock-phosphate. The Lao PDR is fortunate to have substantial bat guano deposits in limestone caves. Extensive experience is available on straw and husk management for lowland systems and green manure species for upland production systems.

scholarly journals Awareness of Integrated Soil Fertility Management Practices in the Savelugu Municipal of the Northern Region of Ghana

2020 ◽  
Vol 43 (338) ◽  
pp. 35-41
Author(s):  
Ammal Abukari ◽  
Rahamatu Abukari
Keyword(s):  
Soil Fertility ◽  
Management Practices ◽  
Household Size ◽  
Sub Saharan Africa ◽  
Inorganic Fertilizer ◽  
Small Scale ◽  
Soil Fertility Management ◽  
Appropriate Use ◽  
Integrated Soil Fertility Management ◽  
Fertility Management

AbstractIn sub-Saharan Africa intensifying small-scale farming is essential in addressing poverty related issues in rural communities and the degradation of natural resources. Integrated Soil Fertility Management (ISFM) are the best practices used to improve the productivity of crops whilst maximizing agronomic efficiency of inputs applied and hence contributing to sustainable intensification. ISFM usually include the appropriate use of inorganic fertilizer and organic resources, good agronomic practices and appropriate use of germplasm. The survey was carried-out on the awareness of Integrated Soil Fertility Management practices in the Savelugu Municipal of Northern Ghana to study the awareness of integrated soil fertility management practices amongst farmers through the administration of questionnaires. A multistage method of sampling was used in selecting thirty (30) respondents randomly from five (5) selected communities namely Jana, Yapalsi, Diari, Nabogu and Gushie to make up a total sample size of 150 respondents. Frequency distribution and percentages were used to represent the data. Correlation analysis was used to test for the relationship between awareness, educational level and household size. The survey showed that majority of the respondents at ages between 21 and 30 years were married and majority with household size of 3 to 5 as well as primary and secondary education. Farming activities were carried-out by hand (80%). Majority of the respondents (43.3%) were informed about ISFM through demonstrations and 20% of the farmers apply inorganic fertilizer. About 85.5% of the respondents were aware of ISFM. The research also revealed that ISFM improves production and supports finances of respondents. The assessment of respondents’ perception of ISFM revealed a positive agreement of the effect of ISFM on soil health as well as improved production. In conclusion, it is thus suggested that it is needful for the involvement of the government on the adoption of ISFM via Non-Governmental Organisations (NGOs) locally and or internationally for a suitable advancement and to guarantee a sustainable environment with a world-wide corporation for improvement.

scholarly journals Composition and amount of nutrients entering the soil with cotton biomass and green manure

2021 ◽  
Vol 12 (2) ◽  
pp. 3127-3129
Author(s):  
Hasanova Aynur Oruj, Et. al.
Keyword(s):  
Soil Fertility ◽  
Physical Properties ◽  
Green Manure ◽  
Crop Residues ◽  
High Efficiency ◽  
Developed Countries ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Organic Substances ◽  
Microbiological Processes

The experience of developed countries in the field of agriculture and research results show that high efficiency from mineral fertilizers can be obtained on fertile soils. That is, the soil should contain a large amount of organic substances, microelements, beneficial microorganisms, various enzymes that activate microbiological processes, normalize and optimize the nutritional, thermal and water-physical properties of the soil. This can be achieved by regularly applying crop residues and organic fertilizers to the soil. Siderata - green fertilizers - are of great importance for increasing soil fertility.

Modelling N Dynamics and Crop Growth in Organic Rice Production Systems using ORYZA2000

2017 ◽  
Vol 25 (4) ◽  
pp. 805-819 ◽  
Author(s):  
Jae-Hoon Shin ◽  
Sang-Min Lee ◽  
Jung-Hun Ok ◽  
Hong-Sik Nam ◽  
Jung-Lai Cho ◽  
...  
Keyword(s):  
Production Systems ◽  
Crop Growth ◽  
Rice Production ◽  
N Dynamics ◽  
Organic Rice

NUTRITION BACKGROUND EFFECT ON PRODUCTIVITY OF OATS

10.12737/3816 ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. 88-90
Author(s):  
Ахметзянов ◽  
Marsel Akhmetzyanov ◽  
Таланов ◽  
Ivan Talanov
Keyword(s):  
Soil Fertility ◽  
Green Manure ◽  
Crop Residues ◽  
Integrated Approach ◽  
Crop Productivity ◽  
Perennial Grasses ◽  
Organic Fertilizers ◽  
Net Income ◽  
Pests And Diseases ◽  
The Cost

Owing to the agriculture intensification increasing, unreasonably extensive use of chemicals, comprehensive mechanization, intensive tillage, together with an increase in productivity leads to noticeable undesirable results. The contamination grow, the infectiousness of fields by pests and diseases of agricultural crops increases, due to decomposition of humus, the soil fertility gradually decreases, and the quality of the products is deteriorating by the presence of hazardous compounds for health, ecological balance is disturbed environment. In this connection, so that to solve these problems, it is necessary to develop farming biologzation, namely the expansion of perennial grasses, reducing the use of fertilizers, pesticides and other chemicals, the use of intermediate crops for fodder and green manure, the use of crop residues and organic fertilizers, the use of advanced tillage methods. In recent years, the study of some specific biologzation elements are held in Russia too, but without an integrated approach. An intensification of the use of biological means of soil fertility was contributed to: creation an optimum density of the addition of the soil; creation better moisture content of crops; phytosanitary condition of crops. The maximum crop productivity (4.03 tons per hectare) was obtained, when adding straw and stubbly green manure, the cost of 1 ton of grain was decreased, compared with mineral background to 281.4 rubles, the net income was higher to 1593.6 rubles per hectare, the profitability of oat production was 52.8%, against 32.5% on a mineral background.

scholarly journals Smallholder Farmers’ Knowledge, Perception and Management of Rice Blast Disease in Upland Rice Production in Tanzania

2018 ◽  
Vol 10 (7) ◽  
pp. 137 ◽  
Author(s):  
Ibrahim Hashim ◽  
Delphina P. Mamiro ◽  
Robert B. Mabagala ◽  
Tadele Tefera
Keyword(s):  
Rice Blast ◽  
Management Practices ◽  
Crop Residues ◽  
Upland Rice ◽  
Smallholder Farmers ◽  
Household Survey ◽  
Rice Production ◽  
Rice Blast Disease ◽  
Blast Disease ◽  
Rice Varieties

The objective of this paper was to investigate farmers’ knowledge and management of rice blast disease in Tanzania. Farmers’ household survey was conducted in five districts namely Mvomero, Morogoro rural, Ulanga, Korogwe and Muheza in April and May 2017. Data were collected through face-to-face interviews using semi-structured questionnaire and observations made through transect walks across selected villages. Farmers observed symptoms of rice blast disease for the first time in the past 3 to 10 years, with higher severity of blast disease in April to May each year. About 46.3% of the respondents were not aware of the cause and spread of rice blast disease. About 39.9% of the respondents associated rice blast disease with drought, high rainfall and temperature (8.7%) and soil fertility problems (5.1%). About 18.7% of the farmers reported burning of crop residues, 17.0% use of ash, 4.0% use of nitrogen fertilizer and 6.3% application of fungicide for management of rice blast disease. The majority (54.0%) of farmers did not apply any management method. Most farmers planted local upland rice varieties, with only 7.7% using improved varieties. About 69.6% of the respondents shared information on disease management among themselves. Lack of knowledge, ability to afford and unavailability of effective blast disease control methods were reported to affect the management of the disease. Strengthening the capacity of farmers to identify the disease and proper management practices will sustainably solve the problem of rice blast disease in upland rice production.

scholarly journals Profitability of rice production in different production systems in Ebonyi State, Nigeria

2019 ◽  
Vol 4 (1) ◽  
pp. 237-246
Author(s):  
Nneka Chidiebere-Mark ◽  
Donatus Ohajianya ◽  
Polycarp Obasi ◽  
Steve Onyeagocha
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Production Systems ◽  
Upland Rice ◽  
Rice Production ◽  
Cooperative Groups ◽  
Rice Farming ◽  
Rice Farmers ◽  
Poor Access ◽  
Farming Households

AbstractProfitability of rice production in different production systems in Ebonyi State, Nigeria was evaluated. Rice is critical for food security in Nigeria, hence, farmers need to make appropriate choices of rice production systems to optimize production and ensure an adequate domestic supply. This study used 2015 survey data from rice farming households. Rice farmers in swamp, lowland and upland rice production systems showed variability in profit. Swamp production systems had the highest return per hectare (29.37%) followed by lowland production systems (20.10%) and upland production systems (13.03%). Poor access to production credit and climate change were constraints to rice production in the area. Rice production using the swamp production system is profitable and would ensure increased production and higher returns to the farmers. It is recommended that farmers should form cooperative groups to enable them to pool resources together to boost their production.

scholarly journals Soil fertility along toposequences of the East India Plateau and implications for productivity and sustainability

2020 ◽  
Author(s):  
Peter S. Cornish ◽  
Ashok Kumar ◽  
Sudipta Das
Keyword(s):  
Land Use ◽  
Oryza Sativa ◽  
Soil Fertility ◽  
Surface Soil ◽  
Rice Production ◽  
Future Research ◽  
Soil Fertility Management ◽  
Fertility Management ◽  
Transplanted Rice ◽  
Small Watersheds

Abstract. In common with other undulating landscapes in Asia, rice (Oryza sativa) on the East India Plateau (EIP) was once confined to hydrologic discharge areas or lowlands, but progressive terracing has now allowed rainfed transplanted rice to encroach upon upland recharge areas, with potential effects on both hydrology and soil fertility. Hydrologic variation down the toposequence and its implications for rice production have been well documented, but not the variation in soil fertility. Measurements of surface-soil fertility in seven of 24 EIP Districts were used to evaluate variation between and within small watersheds stratified down the toposequence into six land classes that reflect hydrology and land use (three with rice and three without, 36 fields/watershed). We aimed to provide a basis for future research to improve soil fertility management. Soils overall were acid, with 14 % of fields requiring liming (pH 

scholarly journals PERCEPTIONS ET STRATEGIES PAYSANNES DE GESTION DE LA FERTILITE DES SOLS DANS LA REGION DE TILLABERY DE LOUEST DU NIGER

2021 ◽  
Vol 9 (4) ◽  
pp. 740-751
Author(s):  
Ibrahim Biga ◽  
◽  
Moussa Mamoudou Boubacar ◽  
Abdoulaye Amadou Oumani ◽  
Mahamane Ali ◽  
...  
Keyword(s):  
Data Collection ◽  
Soil Fertility ◽  
Indicator Species ◽  
Production Systems ◽  
Soil Color ◽  
Soil Fertility Management ◽  
Degraded Lands ◽  
Fertility Management ◽  
Restoration Techniques ◽  
Good Germination

Farms face declining soil fertility. Maintaining this fertility becomes a concern for famers who adopt several strategies to this end. Hence, it is important to know these strategies to better improve and value them. It is in this context that a study was carried out in 15 villages within three municipalities of Tillabery region in Niger. Its objective is to study farmers soil fertility management perceptions and strategies in the municipalities of Gotheye, Tagazar and Torodi. Data collection was carried out through individual surveys of 300 farm managers, with 20 per village, or 100 per municipality. The respondents are mainly illiterate (56%) with agriculture (82%) and house farming (88%) as main activities. They said the soils are poor. Their indicators are soil color (40%), good germination (24%), yield (23%), and soil poorness indicator species (13%). To overcome this, farmers use more manure which is managed sparingly. However, the fallow, neglected by the majority of farmers, lasts only 2 or 3 years. The promotion of integrated soil fertility management through ANR, the use of manures and degraded lands restoration techniques are necessary for the sustainability and improvement of production systems.

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