Rice–fish culture: an option for smallholder Sawah rice farmers of the West African lowlands

Ofori, J.; Abban, Eddie Kofi; Otoo, Ernest; Wakatsuki, Toshiyuki

doi:10.1016/j.ecoleng.2004.12.017

Cited by 23 publications

(18 citation statements)

References 3 publications

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“…In recent years, some biological control methods are introduced to the farming practices to reduce the use of pesticides Responsible editor: Juxiu Liu (Berg 2002;Ofori et al 2005;Lu and Li 2006;Yang et al 2006;Li et al 2008Li et al , 2012Rahman and Barmon 2012;Su et al 2012;Hu et al 2013;Suh 2014). Introducing commercial frogs in paddy fields for reducing pests and minimizing pesticide application was firstly implemented by an agricultural company in the suburb of Shanghai, and the so-called frog rice has now become popular in China, which is highly encouraged by the government (Li et al 2008;Zhang et al 2010;An et al 2012;Zhang 2013).…”

Section: Introductionmentioning

confidence: 99%

Influences of introducing frogs in the paddy fields on soil properties and rice growth

Teng

Luo

et al. 2015

J Soils Sediments

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Purpose This paper aims to study the influences of introducing frogs in the paddy fields on soil ecology and rice growth. Materials and methods The 2-year field experiments were conducted in the suburb of Shanghai in 2013 and 2014. No pesticides, herbicides, and chemical fertilizers were applied within the rice growing season to prevent the possible poisonous effects of agrochemicals on frogs. Results and discussion The results indicated that immigrant frogs in the fields could reduce the populations of rice leaf rollers, stem borers, and planthoppers effectively due to frog predation, and could control rice sheath blight indirectly through reducing insects that transmit disease pathogens. The frog treatment could raise soil nutrient status, improve rice growth, and increase the contents of soluble protein, chlorophyll, and soluble sugar in rice leaves to some extent, thus increasing grain yield significantly. Moreover, it also raised soil microbial biomass and enhanced the activities of soil enzymes such as dehydrogenase, catalase, urease, and acid phosphatase. Conclusions To raise the survival rate of immigrant frogs in the fields, it should be protected from human hunting and chemical poison, and its habitats in the nearby fields should be properly reserved. Introducing frogs in the paddy fields not only showed a potential of pest and disease control but also improved soil fertility and rice growth. Such eco-modified method is beneficial to establish a low-input integrated farming system in the suburb of Shanghai in the future.

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Section: Introductionmentioning

confidence: 99%

Influences of introducing frogs in the paddy fields on soil properties and rice growth

Teng

Luo

et al. 2015

J Soils Sediments

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“…However, it is rare that rice yield in rice-fish culture has been rigorously compared with that in rice monoculture, such as by incorporating statistical tests and equal experimental conditions (see [3,7,9]). Moreover, in all of these studies, the hypothesis was not supported by statistically significant results [12][13][14][15][16][17][18][19][20][21][22][23][24]. Furthermore, the ecological processes leading to higher rice yield in rice-fish culture were not demonstrated (but see [25]).…”

Section: Introductionmentioning

confidence: 82%

Effect of fish in rice-fish culture on the rice yield

et al. 2010

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Rice-fish culture, which means the simultaneous culture of rice and fish, is one of the best options to increase food production from limited land and is practiced in many countries in the world. Although many researchers and farmers believe that the rice yield is increased by fish farming in paddy fields, this hypothesis has never been fully tested. Here, we report ecological processes leading to higher rice yields in the rice-fish culture using crucian carp (Carassius complex), which have adapted to the paddy field ecosystem in Japan. We compare the rice-fish and rice-only plots in the experimental paddy field for biota, water quality, and rice yield. Coverage of duckweed and densities of zooplankton and benthic invertebrates in the rice-fish plots were lower than those in the rice-only plots, indicating that fish utilized them as food. NO 3 -N concentration in the rice-fish plots was higher than that in the rice-only plots, indicating that the increase in NO 3 -N concentration results from excretion of unutilized food nutrients by the fish. Consequently, rice yield in the ricefish plots was 20% higher than that in the rice-only plots. The fertilizing effect of the fish excrement probably increased rice yield.

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“…In East Africa, IAAS husbandry practices involve various methods of stock management (monoculture or polyculture; single or multiple stocking and harvesting strategies), use of different feeds (natural, supplementary or complete feed), management of substrate and water quality, and disease prevention and therapy (Kipkemboi et al, 2006). According to Eyo et al (2006) and Ofori et al (2005), in West Africa, IAAS is typically a complementary interaction between crops, livestock and fish in such a way that limited land can be used for different purposes. In Nigeria, Abiona et al (2012) further notes that agriculture-aquaculture promotes efficient utilization of farm space for multiple productions.…”

Section: Fish and Poultry Foodmentioning

confidence: 99%

“…The overarching philosophy is to promote efficient utilization of farm space for multiple productions in such a way that limited land can be used for different purposes by which waste from one unit can be used to serve as input for other units (Kipkemboi et al, 2006;Ofori et al, 2005). Within the IAAS, production technology includes the species considered for culture, the culture facilities and husbandry employed for the various stages of production (hatchery for fry production, nursery to produce fingerlings for stocking, and grow-out for the final product, usually for human consumption).…”

Section: Fish and Poultry Foodmentioning

confidence: 99%

“…Agriculture-Aquaculture integration is a complementary interaction between crops, livestock and fish as a farming system that focuses diversified agricultural production with emphasis on fish (FAO, 2004;Edwards, 1998). There is variation in the occurrence and importance of aquaculture throughout Africa and Cameroon, with many local differences in the levels of integration employed (Kipkemboi et al, 2006;Fakoya & Daramola, 2005;Ofori et al, 2005;Pouomogne & Brummett, 2002). While most farmers are in crop-based systems, few culture fish and of those that do, most produce less than their resource base would allow.…”

Section: Introductionmentioning

confidence: 99%

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Profitability of Small-Scale Integrated Fish-Rice-Poultry Farms in Cameroon

Oben¹,

Molua²,

Oben³

2015

JAS

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There are increasing efforts from diverse national and international stakeholders promoting integrated aquaculture for its merit in meeting the triple needs of food production, social relevance and environmental stability. This research studies 120 aquaculture producers in the Southwest and Northwest regions of Cameroon. The hypothesis is that socioeconomic parameters influence farmers' selection of an enterprise mix amongst fish-rice-poultry that will maximize revenue. A revenue equation is estimated by imposing a Cobb-Douglas functional form. About 35% of farmers practiced integrated systems, and for those that did not practice in situintegrated systems, about 65% undertook these different enterprises at different times within the same calendar year. The combination of poultry with fish-rice enterprises is practised as a means to increase farm income through better resource utilization. The systems are overall profitable. When integration is undertaken for two systems either as fish cum rice, fish cum poultry or rice cum poultry farmers realize annual net returns of 428,630 FCFA (US$ 857); 785,650 FCFA (US$ 1,571) and 865,990 FCFA (US$ 1,732), respectively. The highest profits of 965,270 FCFA (US$ 1,931) are obtained in the complete fish-rice-poultry system. Econometric estimates of the revenue function reveal positive and direct relationship with farm revenue for socioeconomic parameters such as plot size, labour, credit, education, land tenure, access to extension and enterprise integration. For dissemination and adoption of this technology there is need for training that exploit pond management and marketing of products from the system.

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Rice–fish culture: an option for smallholder Sawah rice farmers of the West African lowlands

Cited by 23 publications

References 3 publications

Influences of introducing frogs in the paddy fields on soil properties and rice growth

Influences of introducing frogs in the paddy fields on soil properties and rice growth

Effect of fish in rice-fish culture on the rice yield

Profitability of Small-Scale Integrated Fish-Rice-Poultry Farms in Cameroon

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