Agricultural innovations in small-scale farming systems of Sudano-Sahelian West Africa: Some prerequisites for success

Sécheresse ◽  
2013 ◽  
Vol 24 (4) ◽  
pp. 322-329 ◽  
Author(s):  
Andreas Buerkert ◽  
Eva Schlecht
Keyword(s):  
West Africa ◽  
Farming Systems ◽  
Small Scale ◽  
Agricultural Innovations

Small-Scale Farming Systems in Ghana

Africa ◽  
1973 ◽  
Vol 43 (2) ◽  
pp. 134-146 ◽  
Author(s):  
George Benneh
Keyword(s):  
Farming Systems ◽  
Agricultural Economics ◽  
Population Pressure ◽  
Regional Differentiation ◽  
Small Scale ◽  
Agricultural Innovations ◽  
Opening Paragraph ◽  
The Tropics ◽  
The Impact

Opening ParagraphAlthough classification of farming systems has been an important theme in the fields of agricultural geography and agricultural economics, there appear to have been no agreed criteria upon which a typology should be made (Grigg, 1969). The problem seems quite intractable as far as most of the developing countries of the tropics are concerned, because lack of statistical data on agriculture has made it impossible for the quantifiable criteria used by agricultural geographers in the advanced countries to be applied. It is therefore not surprising that ‘the notion that shifting cultivation is simple and varies little from area to area and continent to continent’ runs through much of the literature on tropical agriculture. This oversimplified picture of traditional agriculture in the tropics was drawn by earlier writers (Gourou, 1965) who established the framework for a regional differentiation of agriculture. It disregards the changes which have been taking place as a result of increased population pressure on available land, the introduction of cash crops, and the impact of agricultural innovations.

DIVECOSYS: Bringing together researchers to design ecologically-based pest management for small-scale farming systems in West Africa

2014 ◽  
Vol 66 ◽  
pp. 53-60 ◽  
Author(s):  
Thierry Brévault ◽  
Alain Renou ◽  
Jean-François Vayssières ◽  
Guillaume Amadji ◽  
Françoise Assogba-Komlan ◽  
...  
Keyword(s):  
West Africa ◽  
Pest Management ◽  
Farming Systems ◽  
Small Scale

ASSESSMENT OF NITROGEN FIXATION POTENTIAL IN AHIPA (Pachyrhizus ahipa) AND ITS EFFECT ON ROOT AND SEED YIELD

2009 ◽  
Vol 45 (2) ◽  
pp. 177-188 ◽  
Author(s):  
D. N. RODRÍGUEZ-NAVARRO ◽  
M. CAMACHO ◽  
F. TEMPRANO ◽  
C. SANTAMARÍA ◽  
E. O. LEIDI
Keyword(s):  
Raw Materials ◽  
Farming Systems ◽  
Yield Potential ◽  
Small Scale ◽  
South American ◽  
Field Inoculation ◽  
Promising Alternative ◽  
Yield Increase ◽  
Alternative Crop ◽  
Attractive Option

SUMMARYAhipa is a legume of great interest for the production of raw materials (starch, sugar, oil and proteins) for industrial use. Its yield potential and ability to fix atmospheric N2 in association with rhizobia makes it an attractive option for low input agriculture systems. At present, it is cultivated on a very small scale as a food crop in a few South American countries. Little information is available on symbiotic N2 fixation in ahipa and no work has been performed on strain selection for inoculant production. Soils in southwest Europe are devoid of specific rhizobia able to nodulate on ahipa. Selecting rhizobia for symbiotic effectiveness from a collection led to the isolation of strains which provided greater shoot growth and N content under controlled conditions. In the field, inoculation at sowing with the selected strains increased significantly seed and tuberous root yield and seed protein content. The amount of N2 fixed, estimated by 15N natural abundance, reached 160–260 kg N ha−1. In previous work, ahipa appeared to be a promising alternative crop for the production of industrial raw materials. The results of the present study showed a yield increase in tuberous roots and seeds when applying effective rhizobia inoculants. Furthermore, a positive soil N balance was left after its cultivation making ahipa even more interesting for sustainable farming systems.

Offloading Operability of Small Scale AG FLNG With Side-by-Side Moored Small Scale LNG Carrier in Offshore West Africa

2017 ◽  
Author(s):  
Mun-sung Kim ◽  
Eric Morilhat ◽  
X. C. Nguyen ◽  
Bo-hee Kim ◽  
Jung-moon Jang ◽  
...  
Keyword(s):  
West Africa ◽  
Relative Motion ◽  
Structural Integrity ◽  
Effective Means ◽  
Production Capacity ◽  
Cost Effective ◽  
Body Motion ◽  
Small Scale ◽  
Associated Gas ◽  
High Level

This study describes one of the technical solutions for Small Scale FLNG (SSFLNG)[1] development specifically designed to monetize Associated Gas (AG) of producing oil fields located within convenient distance of an existing LNG Plant or Port with LNG storage facility. Limited production capacity combined with short range small scale LNG carriers (SSLNGC), provide a cost effective means for LNG production. Ship to ship off-loading operation by loading arm has been considered in AG SSFLNG. Produced LNG is to be off-loaded from the SSFLNG to side-by-side moored SSLNGC. Relative motion and dynamic load acting on loading arm system in side-by-side mooring arrangement is one of key factors to estimate the offloading operability of the AG SSFLNG. In this paper, a numerical two-body motion analysis for the side-by-side moored SSFLNG in frequency- and time-domain is carried out. Also, the basic engineering work is carried out for the marine loading arms (MLA). Since the MLA reacts approximately as a linear system, it is calculated by a full spectral RAO analysis for each of the worst load cases issued from the spectral ranking. All loads and stresses inside the MLA are verified in accordance with EN1474-1[2] for the situations identified in the previous step. A high level fatigue analysis focused on the cryogenic swivel joints is carried out. Based on the numerical calculation for relative motion in side-by-side moored FLNG, we have been performed structural assessment for MLA in several environment conditions. The structural integrity of both MLA and the LNGC manifold are validated during offloading for Offshore West Africa.

scholarly journals A Remote Sensing-Based Approach to Management Zone Delineation in Small Scale Farming Systems

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1767
Author(s):  
Davide Cammarano ◽  
Hainie Zha ◽  
Lucy Wilson ◽  
Yue Li ◽  
William D. Batchelor ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Vegetation Index ◽  
Farming Systems ◽  
Small Scale ◽  
Sustainable Food ◽  
Environmentally Sustainable ◽  
Management Zone ◽  
The North ◽  
Landsat Satellite ◽  
The Village

Small-scale farms represent about 80% of the farming area of China, in a context where they need to produce economic and environmentally sustainable food. The objective of this work was to define management zone (MZs) for a village by comparing the use of crop yield proxies derived from historical satellite images with soil information derived from remote sensing, and the integration of these two data sources. The village chosen for the study was Wangzhuang village in Quzhou County in the North China Plain (NCP) (30°51′55″ N; 115°02′06″ E). The village was comprised of 540 fields covering approximately 177 ha. The subdivision of the village into three or four zones was considered to be the most practical for the NCP villages because it is easier to manage many fields within a few zones rather than individually in situations where low mechanization is the norm. Management zones defined using Landsat satellite data for estimation of the Green Normalized Vegetation Index (GNDVI) was a reasonable predictor (up to 45%) of measured variation in soil nitrogen (N) and organic carbon (OC). The approach used in this study works reasonably well with minimum data but, in order to improve crop management (e.g., sowing dates, fertilization), a simple decision support system (DSS) should be developed in order to integrate MZs and agronomic prescriptions.

Sign in / Sign up

Export Citation Format

Share Document