Enhancing Crop Residues Recycling in the Philippine Landscape

Mendoza, T. C.

doi:10.1007/978-981-287-643-0_4

Cited by 11 publications

(6 citation statements)

References 18 publications

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“…It should be also noted, however, that decreasing trends were observed for Malaysia and the Philippines, although statistically insignificant, suggesting the importance of sustainable management. In the context, the balanced use of both inorganic and organic fertilisers in accordance with rice demand (Tilman, 1998), stopping the burning of rice straw (Mendoza, 2015) and introduction of no‐tillage system (Carlos et al, 2021; Huang et al, 2016) would be among the feasible options for improving C sequestration and nutrient cycling in agricultural production.…”

Section: Resultsmentioning

confidence: 99%

Long‐term changes in paddy soil fertility in tropical Asia after 50 years of the Green Revolution

Yanai

Tanaka

Nakao

et al. 2021

European J Soil Science

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Over 50 years of the Green Revolution since the 1960s, the global population has increased by 2.5 times, cereal production by 3.3 times and the use of N, P and K fertilisers by 9.4, 4.2 and 4.3 times, respectively. Information is still limited, however, on the influence of these impacts on the fertility status of agricultural soils. Here we investigated the influence of the Green Revolution on 142 paddy soils in three tropical Asian countries, that is, Thailand, the Philippines and Malaysia, during the given period by repeated soil sampling in the 1960s and 2010s at or near the same locations. We revealed that the phytoavailablility indices of three macronutrients – N, P and K, that is, available P, exchangeable K and total N, showed 743% (p < 0.01), 12% and 1% increase on average, respectively, while total C showed 9% decline. Comprehensive investigation of overall fertility status by factor analysis using 11 soil parameters suggested that only the factor scores associated with ‘available P status’ increased drastically in all the three countries (p < 0.01) whereas those associated with ‘organic matter and N contents’ and ‘inherent potentiality’ did not exhibit any consistent changes among the countries. In conclusion, intensive soil/fertiliser management systems under the Green Revolution have successfully improved the nutrient status, especially P status, of paddy soils with slight decrease of soil organic matter over the last 50 years, while a large amount of nutrients applied, especially N and K, has been released from soil to the outer environments. Conversion to a high‐efficiency system of external nutrient inputs with organic matter‐conserving strategies is, therefore, urgently required to secure sustainable food production while restoring the environment during the coming decades. Highlights Paddy soils from 142 locations in three tropical Asian countries were repeatedly surveyed in the 1960s and 2010s. Available P increased by 8.4 times, that of exchangeable K and total N showed 12% and 1% increase, while organic matter level showed 9% decline. Factor analysis indicated significant increase of the factor scores for those associated with ‘available P status’. A high‐efficiency system with organic matter‐conserving strategies is to be established for both sustainable food production and restoration of the environment.

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Section: Resultsmentioning

confidence: 99%

Long‐term changes in paddy soil fertility in tropical Asia after 50 years of the Green Revolution

Yanai

Tanaka

Nakao

et al. 2021

European J Soil Science

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“…During the 1970s the Philippines lost 30% of its natural forests due to agricultural land, mainly rice cultivation has been a major factor, Lasco, et al (2001). Ricelands account for around 30% of agricultural land in the Philippines (Mendoza, 2015). However, deforestation in upland areas has been a signi cant driver of the abandonment of wet rice cultivation in certain regions of the Philippines, based on evidence from studies by Urich (1996) and Follosco (2011).…”

Section: Deforestationmentioning

confidence: 99%

Shrinking Rice Bowls: Tracing the Decline of Philippine Rice Lands

Taer

2024

Preprint

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Rice farming is a pillar of food security, livelihoods, and cultural heritage across the Philippines. However, available rice lands face mounting pressures. This systematic review synthesizes evidence on factors driving the decline of Philippine rice lands over the past 30 years (1993-2023). Literature was retrieved from academic databases and grey sources, screened for relevance, and analyzed following PRISMA guidelines. Results reveal both natural and anthropogenic threats to rice lands: recurrent typhoons, volcanic eruptions, landslides, and flooding periodically damage rice areas. However, human activities dominated the drivers of rice land loss and degradation. Rapid urbanization and sprawl have directly converted 30-50% of rice lands near cities over recent decades. Agricultural policies and shifting profitability spurred farmers to convert paddies to aquaculture, cash crops, and other uses. Inadequate irrigation leaves 30% of lands dry. Deforestation disrupts water supplies essential for traditional wet rice cultivation, prompting abandonment. Groundwater over-extraction causes subsidence, enhancing flood risks and infrastructure damage. Deteriorating iconic Cordillera rice terraces face erosion and landslides after abandonment. Integrated land use planning is urgently needed to safeguard sufficient rice lands and support climate-resilient, sustainable intensification. Stronger protection of agricultural zones, expansion of irrigation infrastructure, and farmers’ adaptation incentives can help secure rice farming livelihoods and long-term food self-sufficiency, given the projected pressures of urbanization and climate change across the Philippines’ rice lands.

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“…These attitudes were also mentioned by Kadam et al [19] as the most important for changing straw management practices in the United States, particularly regulation with greater economic incentives for cooperation with rice straw collection advice, which might help to change farmers' attitudes. The economic or financial incentive could be a powerful driver for farmers to choose a non-burning approach [10,20,21]. In addition, to investigate the impact of policy measures on Chinese farmers' rice straw management using a regression model, key results highlighted that the burning ban has reduced rice straw burning dramatically and motivated farmers to retain straw in their soil.…”

Section: Factors Influencing Non-burning Decisionmentioning

confidence: 99%

“…The study areas were purposively selected covering 12 villages in the Taluk sub-district of Chainat Province in the middle region of Thailand (Figure 2). driver for farmers to choose a non-burning approach [10,20,21]. In addition, to investig the impact of policy measures on Chinese farmers' rice straw management using a regr sion model, key results highlighted that the burning ban has reduced rice straw burni dramatically and motivated farmers to retain straw in their soil.…”

Section: Study Areasmentioning

confidence: 99%

Farmers’ Perceptions, Insight Behavior and Communication Strategies for Rice Straw and Stubble Management in Thailand

Sereenonchai

Arunrat

2022

Agronomy

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The adoption of rice straw and stubble management approaches can be affected by various factors. To understand the psychological factors influencing Thai farmers’ adoption of rice straw and stubble management approaches, three integrated behavioral theories were employed: the Theory of Planned Behavior (TPB), the Value-Belief-Norm (VBN) and the Health Belief Model (HBM). Then, a practical communication framework was synthesized and proposed to promote rice straw utilization for social-ecological benefits to achieve more sustainable agricultural production. Through a questionnaire survey and in-depth interviews with 240 local farmers, a statistical analysis was performed employing cross-tab, stepwise multiple linear regression, one-way ANOVA and descriptive content analysis using QDA lite miner software. The key results clearly showed that perceived pro-environmental personal norms, perceived cues to rice straw utilization, perceived behavioral control, perceived severity of rice straw burning, perceived ascription of responsibility, and the perceived benefits of rice straw utilization were significantly negatively influenced by burning, and that there was a significantly negative difference to non-burning approaches. Meanwhile, cost savings as perceived benefits of the current option of burning showed a significantly positive difference when compared with incorporation and free-duck grazing options. In communication strategies to promote rice straw utilization for achieving sustainable agriculture, key messages should highlight the clear steps of rice straw utilization, as well as the costs and benefits of each option in terms of economic, health, environmental and social perspectives. Moreover, messages designed to promote action knowledge and self-efficacy at the group level, to promote perceived responsibility via self-awareness and self-commitment, and convenient channels of communication to the farmers can help to achieve more effective non-burning rice straw and stubble management.

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Enhancing Crop Residues Recycling in the Philippine Landscape

Cited by 11 publications

References 18 publications

Long‐term changes in paddy soil fertility in tropical Asia after 50 years of the Green Revolution

Long‐term changes in paddy soil fertility in tropical Asia after 50 years of the Green Revolution

Shrinking Rice Bowls: Tracing the Decline of Philippine Rice Lands

Farmers’ Perceptions, Insight Behavior and Communication Strategies for Rice Straw and Stubble Management in Thailand

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