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Book (stand-alone)Technical bookSurvey versus remotely sensed data
An evaluation of crop yields in the Comoros
2024Also available in:
No results found.The Comoros, a small island developing state (SIDS) ranking among the poorest nations in Africa, is facing numerous challenges that make it particularly vulnerable to food insecurity: as a remotely located, net-food importing country with a small landmass, limited agricultural land and high exposure to natural catastrophes, the Comoros’ food security is particularly vulnerable to external shocks. While being a net-food importer, agriculture is an essential sector and livelihood source, contributing 30 percent to gross domestic product in 2015. This makes the Comoros a rare exemption across small island developing states. Investing in the Comoros’ agrifood systems and increasing their efficiency is essential to increase food security. So far, a lack of data in the Comoros’ agrifood systems has limited the scope of analyses. The use of remotely sensed data for crop yield models presents a cost-effective opportunity for the Comoros to continuously monitor its agricultural sector, and reduce its data gap and the high cost associated with surveys. Based on two different sensors, MODIS-TERRA and Sentinel-2, and a unique FAO survey conducted in 2021 which georeferenced farm plots, we derive a method to calibrate vegetation indices (NDVI) as a proxy for crop yield in the Comoros. Our results suggest that the MODIS sensor is not well adapted to estimate yields in the Comoros. Plots are on average less than 1 ha, while the MODIS spatial resolution is 250 m by 250 m which leads to less consistency and less variation within a plot. Sentinel 2 images seem more consistent with survey-based crop yield estimates. We finally managed to proxy manioc yields by putting restrictions on the highest yields producers. The coefficient of determination is up to 0.28 when dealing with farmers producing at least 40 percent of manioc. -
Book (stand-alone)Technical bookRemote sensing for space-time mapping of smog in Punjab and identification of the underlying causes using geographic information system (R-SMOG) 2020
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No results found.Food and Agriculture Organization of the United Nations, Pakistan initiated the Technical Cooperation Programme on Remote Sensing for Spatio-Temporal mapping of Smog (R-SMOG) upon the request of the Government of Punjab. The R-SMOG evaluates the relationship between Smog and the rice residue burning practices by farmers in the Rice belt of Punjab. It is a comprehensive geospatial research which integrates Spatio-temporal mapping of smog viz-a-viz climatological modelling, study of seasonal trends and dynamics and estimates an inventory of sectoral emissions. The findings of the R-SMOG will assist to generate scientific evidences to study the causes of Smog in Punjab and to adopt adequate mitigation and adaptation strategies. -
BookletTechnical reportA remote sensing assessment of cultivated cropland area in the Sudan during the summer season
June to October 2024
2025Also available in:
No results found.Sudan’s rainfed agriculture is vital for food security but remains vulnerable to erratic rainfall, land degradation, and conflict. The lack of updated agricultural data further constrains accurate assessments and timely interventions. This study analyzes cropland extent and cultivated area trends from 2018 to 2024 using remote sensing, integrating biomass productivity, agricultural indices, rainfall data, and high-resolution imagery.The results indicate a 6.4 percent increase in total cultivated area for the 2024 summer season compared to the 2018–2022 baseline, reaching 19,148,190 hectares. This marks a strong recovery following a sharp 14.6 percent decline in 2023, when the cultivated area fell to 15,359,053 hectares.These findings offer valuable insights into long-term agricultural trends and contribute to crop type mapping, yield estimation, and evidence-based policy-making to enhance resilience and promote sustainable agricultural development in the face of environmental and socio-economic challenges.
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Book (series)YearbookWorld Food and Agriculture – Statistical Yearbook 2023 2023
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No results found.This publication offers a synthesis of the major factors at play in the global food and agricultural landscape. Statistics are presented in four thematic chapters, covering the economic importance of agricultural activities, inputs, outputs and factors of production, their implications for food security and nutrition and their impacts on the environment. The Yearbook is meant to constitute a primary tool for policymakers, researchers and analysts, as well as the general public interested in the past, present and future path of food and agriculture. -
DocumentOther documentBenzoic acid and its salts - Chemical and Technical Assessment (CTA). 92nd JECFA 2022
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No results found.This Chemical and Technical Assessment (CTA) summarizes the information on benzoic acid (INS No. 210) and its salts such as sodium benzoate (INS No. 211), potassium benzoate (INS No. 212) and calcium benzoate (INS No. 213) that are synthetic antimicrobial preservatives. -
Book (series)Technical reportJoint FAO/WHO Expert Meeting on Tropane Alkaloids
30 March – 3 April 2020
2020Also available in:
No results found.Between March and April 2019, many cases of suspected food poisoning were reported by health care workers in the Karamoja region of the Republic of Uganda. Consumption of food products that had high levels of tropane alkaloids was identified as the cause. This group of compounds occur in several plant genera that belong to the Solanaceae family and can contaminate staples like cereals and grains. Given the absence of international guidance and regulations, a Joint FAO/WHO Expert Meeting on Tropane Alkaloids was convened remotely between 30 March – 3 April 2020. This publication captures the discussions of the expert meeting and provides risks assessments of tropane alkaloids (hyoscyamine and scopolamine) as well as recommendations outlining appropriate risk management options.