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Crop Monitoring Using Vegetation and Thermal Indices for Yield Estimates: Case Study of a Rainfed Cereal in Semi-Arid West Africa

Louise Leroux, Christian Baron, Bernardin Zoungrana, Seydou B. Traore, Danny Lo Seen, Agnes Begue
2016 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
In this study, a new approach based on the combination of vegetation and thermal 16 indices for rainfed cereal yield assessment in the Sahelian region was investigated.  ...  In areas where access to ground 23 measurements is difficult, a simple, robust and timely satellite-based model combining vegetation and 24 2 thermal indices from MODIS and calibrated using crop model  ...  In this study, we 605 investigated a new approach based on the combination of vegetation and thermal indices for rainfed cereal 606 yield assessment in the Sahelian region.  ... 
doi:10.1109/jstars.2015.2501343 fatcat:zcinxmyqzzdvlpnhodp3mevtjq

A High-Resolution Cropland Map for the West African Sahel Based on High-Density Training Data, Google Earth Engine, and Locally Optimized Machine Learning

Kaboro Samasse, Niall P. Hanan, Julius Y. Anchang, Yacouba Diallo
2020 Remote Sensing  
study, with 50% used for model training and 50% used for model validation).  ...  Training data were derived from an independent, high-resolution, visually interpreted sample dataset that classifies sample points across West Africa using a 2-km grid (~380,000 points were used in this  ...  and validation for this analysis.  ... 
doi:10.3390/rs12091436 fatcat:iznaewql6zavnn6ejani4q4sj4

A New Temperature-Vegetation Triangle Algorithm with Variable Edges (TAVE) for Satellite-Based Actual Evapotranspiration Estimation

Hua Zhang, Steven Gorelick, Nicolas Avisse, Amaury Tilmant, Deepthi Rajsekhar, Jim Yoon
2016 Remote Sensing  
As TAVE has a simple structure and low data requirements, it provides an efficient means to satisfy the increasing need for evapotranspiration estimation in data-scarce semi-arid regions.  ...  With these features, TAVE effectively addresses the combined influence of terrain and water stress on semi-arid environment AET estimates.  ...  Acknowledgments: We thank Mandy McLean, Luna Al-Hadidi and Marc Mueller for their help in programming and data collection.  ... 
doi:10.3390/rs8090735 fatcat:q47yu2i2azdk3gquwke3pjhhmu

Plant Biomass Productivity Under Abiotic Stresses in SAT Agriculture [chapter]

L. Krishnamurthy, M. Zaman-Allah, R. Purushothaman, M. Irshad, V. Vadez
2011 Biomass - Detection, Production and Usage  
Br.] production in the arid and semi-arid zones of south Asia and West-Africa (Blummel et al. 2003) .  ...  Cereals Pearl millet Most of the pearl millet, either as grain or fodder crop, is grown in the arid and semi-arid zones of south Asia and West Africa where the soils are prone to drought stress or soil  ...  This chapter is distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike-3.0 License, which permits use, distribution and reproduction for non-commercial purposes, provided  ... 
doi:10.5772/17279 fatcat:4rebfqvqezaa3ddl4nrgdaguea

Agricultural Technological and Institutional Innovations for Enhanced Adaptation to Environmental Change in North Africa [chapter]

Ali Nefzaoui, Habib Ketata, Mohammed El
2012 International Perspectives on Global Environmental Change  
As compared to rainfed cropping, supplemental irrigation in semiarid Tunisia yielded a net return of 60-170% for cereal crops and up to over 400% for vegetables (Ben Mechlia et al., 2008) .  ...  In arid and semi-arid regions of North Africa, cereal crop residues and natural pastures generally do not meet the nutrient requirements of small ruminants for meat production.  ...  Agricultural Technological and Institutional Innovations for Enhanced Adaptation to Environmental Change in North Africa, International Perspectives on Global Environmental Change, Dr.  ... 
doi:10.5772/27175 fatcat:hubkaisyezanvj3qh2lx2i2mie

Feet in the water and hands on the keyboard: A critical retrospective of crop modelling at AfricaRice

P.A.J. van Oort, M. Dingkuhn
2021 Field crops research (Print)  
A B S T R A C T Rice is cultivated throughout Africa in a vast array of environments.  ...  But large gaps remain in modelling capabilities and underlying knowledge, particularly regarding biotic stresses, inland valley hydrology, and ricebased cropping sequences, e.g. including vegetable crops  ...  A similar study using published data from humid to semi-arid environments across the world found a very similar transpirational cooling vs. humidity relation (van Oort et al., 2014c) .  ... 
doi:10.1016/j.fcr.2021.108074 fatcat:xvvyu5ltlbdo7fypczwgpwouiu

Impacts of Present and Future Climate Variability and Change on Agriculture and Forestry in the Arid and Semi-Arid Tropics

M. V. K. Sivakumar, H. P. Das, O. Brunini
2005 Climatic Change  
The arid and semi-arid regions account for approximately 30% of the world total area and are inhabited by approximately 20% of the total world population.  ...  Issues of present and future climate variability and change on agriculture and forestry in the arid and semi-arid tropics of the world were examined and discussion under each of these issues had been presented  ...  Arid and semi-arid lands often carry a sizeable representation of trees and shrubs in the vegetative cover.  ... 
doi:10.1007/s10584-005-5937-9 fatcat:sruuy5hj2bcmxlzmwx7bqfkcwi

Climate science and famine early warning

J. Verdin, C. Funk, G. Senay, R. Choularton
2005 Philosophical Transactions of the Royal Society of London. Biological Sciences  
Vegetation index images have been used since the mid-1980s to monitor the crop and rangelands of semi-arid sub-Saharan Africa (Hutchinson 1991 ).  ...  Home to semi-arid regions where crops are already near their thermal maxima, higher temperatures will depress yields and place increasing limitations on pasture, yields and water availability in semi-arid  ... 
doi:10.1098/rstb.2005.1754 pmid:16433101 pmcid:PMC1569579 fatcat:nqxmtpt75jcjhlf2tfpejmcl5i

Global Water and Food Security: Megatrends and Emerging Issues [chapter]

Mark W. Rosegrant, Sarah A. Cline, Rowena A. Valmonte-Santos
2009 Water Resources Development and Management  
Feeding the world's growing population will depend to a large extent on irrigation, but the future of irrigation water supplies is increasingly constrained by growth in other sectors.  ...  Moreover, globalization and trade liberalization will increasingly impact water use and food production.  ...  Investments in water use efficiency for irrigated and rainfed crop production should include breeding of crop varieties with high water use efficiency since this is a good indicator of the crop's ability  ... 
doi:10.1007/978-3-642-04615-5_2 fatcat:sw6ihloisrfzppzkcm7a5i24ee

Sorghum yield prediction from seasonal rainfall forecasts in Burkina Faso

Ashok Mishra, James W. Hansen, Michael Dingkuhn, Christian Baron, Seydou B. Traoré, Ousmane Ndiaye, M. Neil Ward
2008 Agricultural and Forest Meteorology  
Relative to forecasts based solely on monitored weather and historic climatology, incorporating rainfall forecasts resulted in modest improvements to yield forecasts made in May or June.  ...  This multi-decadal component of rainfall variability accounts for a portion of the apparent predictability of sorghum yields.  ...  crop statistics and meteorological data, and to Michael Bell for deriving the rainfall isohyet map.  ... 
doi:10.1016/j.agrformet.2008.06.007 fatcat:c7mmzvm2vrgb5b2rvffympdvsq

DROUGHT TOLERANCE OF SELECTED SOUTH AFRICAN TARO (COLOCASIA ESCULENTA L. SCHOTT) LANDRACES

T. MABHAUDHI, A. T. MODI
2014 Experimental Agriculture  
RF conditions resulted in significantly lower biomass, HI, and final yield of taro landraces compared to irrigated conditions.  ...  Taro was slow to emerge (~ 49 days) and showed significant differences between landraces with respect to final emergence with DL never achieving a good crop stand.  ...  As already established (section 1.1), South Africa is a water-scarce country; more than 80% of the country is classified as hyper-arid to semi-arid (Bennie and Hensley, 2001) .  ... 
doi:10.1017/s0014479714000416 fatcat:vvamjgifbfcmfbxqporgxmaqry

The Evaporative Stress Index as an indicator of agricultural drought in Brazil: An assessment based on crop yield impacts

Martha C. Anderson, Cornelio A. Zolin, Paulo C. Sentelhas, Christopher R. Hain, Kathryn Semmens, M. Tugrul Yilmaz, Feng Gao, Jason A. Otkin, Robert Tetrault
2016 Remote Sensing of Environment  
In this paper we study correlations for the period 2003-2013 between yield estimates for major crops grown in Brazil and the Evaporative Stress Index (ESI)an indicator of agricultural drought that describes  ...  The results demonstrate that for monitoring agricultural drought in Brazil, value is added by combining LAI with LST indicators within a physically based model of crop water use.  ...  Safrinha crops are grown primarily in semi-arid northeastern BA, largely for subsistence purposes.  ... 
doi:10.1016/j.rse.2015.11.034 fatcat:t4gsfirbczfyja6e2hjayblbqa

Chapter 3: Desertification, Climate Change and Land: An IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems [chapter]

Chuck Chuan Ng
2019 Zenodo  
degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems https://www.ipcc.ch/srccl/chapter/chapter-3/  ...  Intergovernmental Panel on Climate Change (IPCC) IPCC SPECIAL REPORT ON CLIMATE CHANGE AND LAND (SRCCL) Chapter 3: Climate Change and Land: An IPCC special report on climate change, desertification, land  ...  A study by Wang et al. (2009) in arid and semi-arid China showed decreased livestock productivity and grain yields from 2040 to 2099, threatening food security.  ... 
doi:10.5281/zenodo.3630037 fatcat:z2nnfx2vkjb4hij3qtcvqkmx3m

Water and food in the bioeconomy: challenges and opportunities for development

Mark W. Rosegrant, Claudia Ringler, Tingju Zhu, Simla Tokgoz, Prapti Bhandary
2013 Agricultural Economics  
No-till technology has improved soil moisture conservation and reduced crop failure in dry years, particularly in arid or semi-arid areas such as Sub-Saharan Africa.  ...  The study estimates values for other crops at 2,073 liters for wheat 2,506 liters for cassava, and 5,558 liters for sorghum.  ... 
doi:10.1111/agec.12058 fatcat:n5ajf573szarfjgdq2w25o4fym

Climate change impacts on irrigated agriculture in the Guadiana river basin (Portugal)

Pedro Valverde, Ricardo Serralheiro, Mário de Carvalho, Rodrigo Maia, Bruno Oliveira, Vanessa Ramos
2015 Agricultural Water Management  
A general increase in crop irrigation requirements was estimated, mainly for those crops as maize, pasture, and orchards that are already big irrigation water consumers.  ...  The ISAREG simulations were focused in a set of the most locally representative crops to assess the evolution of net and total water requirements, considering a monthly time step for two 30-year future  ...  PTDC/AAC-AMB/115587/2009 "Developing a methodology for integrating the effects of climate change in water resources management applied to a Portuguese river basin", with the participation of the Faculty  ... 
doi:10.1016/j.agwat.2014.12.012 fatcat:6mqeq3uz4naf5htckzda4ojh7e
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