About CORIGAP

Objectives

Goals

Phase 1 

The first phase (2012-2016) aimed to sustainably increase rice yields in three major granaries by conducting the following activities:

Phase 2

During Phase II (2017-2020), the project achieved substantial progress through science-based quantitative tools and participatory methods that:


Phase 3

The expected outcomes of CORIGAP Phase III (2021-2022) are as follows:

RESEARCH TOPICS

Environmental/Ecological footprint indicators

Case Study: On-farm assessment of different rice crop management practices in the Mekong Delta (MKD), Vietnam, using sustainability performance indicators

As part of an adaptive research platform, we conducted a household survey of GAP (VietGAP and GlobalGAP), Small Farmer, Large Field (SFLF), and conventional (CNV) farmers in Can Tho province in the Mekong Delta and established replicated production-scale field trials of One Must Do, Five Reductions (1M5R) integrated technology package, with an emphasis on further reducing seed and pesticide inputs by applying limits on their use. We assessed the sustainability performance of 1M5R and the three different management approaches for rice production (i.e. GAP, SFLF, and CNV) over two rice cropping seasons using eight farm-level Sustainable Rice Platform (SRP) performance indicators.

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Ecologically-based pest management

A review: Integrated pest management: good intentions, hard realities 

In this review, IRRI scientist Rica Joy Flor, co-examined how integrated pest management (IPM) has developed over time and assessed whether this concept remains suited to present-day challenges. The authors believe that despite many good intentions, hard realities need to be faced. They identified the following major weaknesses: 

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Rice yield gaps

Case study: Sustainable rice production in the Mekong River Delta: Factors influencing farmers’ adoption of the integrated technology package “One Must Do, Five Reductions” (1M5R)

The study aimed to investigate the factors affecting the adoption of sustainable rice farming practices combined in the national program “One Must Do, Five Reductions” (1M5R). Furthermore, a special focus was placed on identifying adoption constraints. Adoption was investigated by means of a survey questionnaire with 465 farmers in An Giang and Can Tho Province. Overall, results show that almost all farmers followed the requirements of pesticide reduction, post-harvest loss reduction, and the use of certified seeds. However, farmers had problems reducing their fertilizer use, water use, and seed rate.

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Postharvest loss reduction

Case study: Assessment of post‐harvest losses and carbon footprint in intensive lowland rice production in Myanmar

This paper examines how a move from traditional post-harvest operations of smallholder rice farms in the Ayeyarwady Delta, Myanmar, to improved post-harvest operations affected income, energy efficiency, and greenhouse gas emissions (GHGE). Harvest and post-harvest losses were investigated in a field experiment with 5 replications per scenario. A comparative analysis of energy efficiency and cost-benefits was conducted for different practices of rice production from cultivation to milling.

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Learning Alliance

Case study: Adaptive Research with and without a Learning Alliance in Myanmar: Differences in learning process and agenda for participatory research

The main challenge for researchers and project staff when implementing inclusive approaches in agricultural innovation is how learning and technology adaptation interact and how to reach jointly set targets. We provide a comparative analysis of the learning process induced by adaptive research (AR) in one case and a combined AR with Learning Alliance (LA) approach in another. The AR approach bridged farmers and researchers, but its implementation where researchers controlled experimentation, was not optimally conducive to experiential and discovery learning. The combined AR and LA approach expanded the number of stakeholders with whom farmers interact.

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CORIGAP-supported Graduate Research

CORIGAP developed a Postgraduate Innovation Platform to support the science-based evidences that will strengthen the proof of concept on exciting research topics. Get to know more about these new breed of rice scientists and read their thesis outputs. 

Introducing CORIGAP's successful scholars

Get to know some of our brilliant scholars through the years 

Helena Wehmeyer

Helena is a Ph.D. Geography student from the University of Basel, Switzerland. Her research focuses on the impact analysis of CORIGAP regarding the environmental and social footprint of rice farmers in Myanmar and Vietnam. 

She was under the supervision of Dr. Rita Schneider-Sliwa (University of Basel) and Melanie Connor (IRRI).

Helena is a PhD Geography student from the University of Basel, Switzerland. Her research focuses on the impact analysis of CORIGAP regarding the environmental and social footprint of rice farmers in Myanmar and Vietnam. For the analysis, she is looking at the farmers' socioeconomic structure to connect the dots between the reduction of yield gaps and geographic, economic, as well as demographic factors. The objective is to examine if socioeconomic structure matters to a successful adoption of best management practices and sustainable farming methods. These shall eventually increase yields and hence reduce yield gaps.

She was under the supervision of Dr. Rita Schneider-Sliwa (University of Basel) and Melanie Connor (IRRI).

Some of Helena's research publications: 

One Must Do, Five Reductions qualitative analysis of the diffusion and adoption constraints in Vietnam

Rural development and transformation of the rice sector in Myanmar: Introduction of best management practices for sustainable rice agriculture

Unpacking the processes that catalyzed the adoption of best management practices for lowland irrigated rice in the Mekong Delta

Visit the CORIGAP Digital Library for more. 

Nishanka Jayasiri

Nishanka took her Ph.D. research at the University of Peradeniya, Sri Lanka. She is under the supervision of Prof. (Ms.) N.D.K. Dayawansa from the University of Peradeniya, Sri Lanka, Dr. Sudhir Yadav of IRRI, and Prof. Karin Ingold, University of Bern, Switzerland.

Nishanka took her Ph.D. research at the University of Peradeniya, Sri Lanka. Her research topic is entitled "Assessing environmental sustainability in rice-based agro-food system in the Deduru Oya river basin of Sri Lanka." She is under the supervision of Prof. (Ms.) N.D.K. Dayawansa from the University of Peradeniya, Sri Lanka, Dr. Sudhir Yadav of IRRI, and Prof. Karin Ingold, University of Bern, Switzerland.

Some of Nishanka's research publications: 

Assessing potential environmental impacts of pesticide usage in paddy ecosystems: A case study in the Deduru Oya river basin, Sri Lanka

Managing agricultural water resources: Addressing the complexity of innovation, social perspectives, and water governance in Sri Lanka

Spatio-temporal analysis of water quality for pesticides and other agricultural pollutants in Deduru Oya river basin of Sri Lanka

Visit the CORIGAP Digital Library for more. 


Molly Schuman-Goodier

Molly was a Ph.D. candidate at Northern Arizona University (NAU) in Flagstaff, USA when she conducted research in the Philippines supported by CORIGAP, as well as an NAU/NSF Integrative Graduate Education and Research Traineeship (IGERT) fellowship, and an NAU/NSF GK-12 Teaching fellowship.

Grant Singleton, IRRI's Principal Scientist and CORIGAP project leader served as one of her research supervisors. 

Molly was a PhD candidate at Northern Arizona University (NAU) in Flagstaff, USA who conducted research in the Philippines supported by CORIGAP, as well as an NAU/NSF Integrative Graduate Education and Research Traineeship (IGERT) fellowship, and a NAU/NSF GK-12 Teaching fellowship.

Molly's research topic was about investigating the effects of endocrine disrupting pesticides used in rice agriculture on amphibians. Over 127 different pesticides have been identified as endocrine-disrupting compounds (EDCs), which interfere with vertebrate endocrine pathways to disrupt fundamental developmental and reproductive processes. Her research results helped provide information on sustainable rice agricultural practices, and address concerns linking pesticide use to biodiversity declines and human health.

Some of Molly's research publications: 

Developmental assays using invasive cane toads, Rhinella marina, reveal safety concerns of a common formulation of the rice herbicide, butachlor

Ecosystem hero and villain: native frog consumes rice pests, while the invasive cane toad feasts on beneficial arthropods

Competition and pesticide exposure affect development of invasive (Rhinella marina) and native (Fejervarya vittigera) rice paddy amphibian larvae

Visit the CORIGAP Digital Library for more. 

Sarathchandra Siriwardana

Sarath was a Ph.D. student at the University of Peradeniya focusing on crop protection. Sarath was under the supervision of Dr. K.S. Hermachandra (University of Peradeniya), Dr. L. Nugaliyadda (University of Ruhuna), Dr. Nyo Me Htwe (Department of Agriculture, Myanmar), and Dr. Grant Singleton (IRRI).

Sarath was a Ph.D. student at the University of Peradeniya focusing on crop protection. His research was on the development of a management system for rice field rats in Sri Lanka based on their diversity, ecology, reproductive behavior, and societal impact. Rat problems, direct crop damage, and leptospirosis disease are significant issues in Sri Lankan rice farming communities that continue to spread each year. He also currently serves as the assistant director of agricultural research at the Rice Research and Development Institute, Batalagoda, Sri Lanka. Sarath was under the supervision of Dr. K.S. Hermachandra (University of Peradeniya), Dr. L. Nugaliyadda (University of Ruhuna), Dr. Nyo Me Htwe (Department of Agriculture, Myanmar), and Dr. Grant Singleton (IRRI).

Some of Sarath's research publications: 

Small mammal communities, associated damage to rice and damage prevention in smallholder rice storage facilities in Sri Lanka

Visit the CORIGAP Digital Library for more. 

Zar Zar Soe

Zar was an MS Agronomy student from the University of the Philippines Los Baños. She was under the supervision of Dr. Virender Kumar.

Zar was an MS Agronomy student from the University of the Philippines Los Baños. The focus of her research was on weed science in rice. She was under the supervision of Dr. Virender Kumar. In 2010, she received her bachelor’s degree in agricultural science from Yezin Agricultural University, Myanmar. Her undergraduate research was on Yield and Yield Components of Rice (Oryza sativa L.) as influenced by different times of Urea Application.

Some of Zar's research publications: 

Response options to rodent outbreaks following extreme weather events: cyclone Nargis, a case study

Visit the CORIGAP Digital Library for more. 

Ma. Renee P. Lorica

Renee earned her Ph.D. in Agriculture, Health, and Environment at the University of Greenwich, United Kingdom. She was supported by the Lee Foundation Rice Scholarship and CORIGAP. She was supervised by Grant Singleton (IRRI / NRI, U Greenwich) and Steven Belmain (NRI, U Greenwich). Alex Stuart (IRRI) also guided her research.

For Renee's dissertation, she investigated the effect of the water-saving technology Alternate Wetting and Drying (AWD) on the population dynamics, habitat use, and levels of damage inflicted by rodent pests on lowland irrigated rice.  Findings indicate that AWD had no effect on breeding, trappability, movement, and propensity to inflict damage by rats. Renee's research provided evidence that farmers have no cause to reject AWD based on concerns that it will exacerbate crop losses by rodents. Rodent pest management based on the particular species and site (ecologically-based rodent management or EBRM) can address losses caused by this pest.


Some of Rene's research publications: 

Optimizing the capture of neophobic rice field rats in lowland Asian rice ecosystems

Rodent management and cereal production in Asia: balancing food security and conservation

Rodent damage to rice crops is not affected by the water-saving technique, alternate wetting and drying

Visit the CORIGAP Digital Library for more.