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This paper describes a remote sensing based vegetation-phenology approach to accurately separate out and quantify groundwater irrigated areas from surface-water irrigated areas in the Krishna River basin (265 752 km2), India, using MODIS 250-m every 8-day near continuous time series for 2000-2001...


Gumma, Murali K.Thenkabail, Prasad S.Velpuri, N.M.[Vegetation phenology to partition groundwater- from surface water-irrigated areas using MODIS 250-m time-series data for the Krishna River basin]Vegetation phenology to partition groundwater- from surface water-irrigated areas using MODIS 250-m time-series data for the Krishna River basin

Groundwater development across much of Sub-Saharan Africa is constrained by a lack of knowledge on the suitability of aquifers for borehole construction. The main objective of this study was to map groundwater potential at the country-scale for Ghana to identify locations for developing new suppl...


Gumma, Murali K.Pavelic, Paul[Mapping of groundwater potential zones across Ghana using remote sensing, geographic information systems, and spatial modeling]Mapping of groundwater potential zones across Ghana using remote sensing, geographic information systems, and spatial modeling

Cropland fallows are the next best-bet for intensification and extensification, leading to increased food production and adding to the nutritional basket. The agronomical suitability of these lands can decide the extent of usage of these lands. Myanmar’s agricultural land (over 13.8 Mha) has the ...


Gumma, Murali K.Thenkabail, Prasad S.Kumara Charyulu, DeeviMohammed, I. A.Teluguntla, P.Oliphant, A.Xiong, J.Aye, T.Whitbread, Anthony M.[Mapping cropland fallow areas in Myanmar to scale up sustainable intensification of pulse crops in the farming system]Mapping cropland fallow areas in Myanmar to scale up sustainable intensification of pulse crops in the farming system

Many Indian capitals are rapidly becoming megacities due to industrialization and rural–urban emigration. Land use within city boundaries has changed dynamically, accommodating development while replacing traditional land-use patterns. Using Landsat-8 and IRS-P6 data, this study investigated land...


Gumma, Murali K.Irshad, M.Nedumaran, S.Whitbread, Anthony M.Lagerkvist, C.J.[Urban Sprawl and Adverse Impacts on Agricultural Land: A Case Study on Hyderabad, India]Urban Sprawl and Adverse Impacts on Agricultural Land: A Case Study on Hyderabad, India

Dryland cereal and legume crops have often received less attention than maize, wheat and rice in terms of research and development priorities. But these crops are important globally because they serve populations living in poverty and particular socioeconomic and environmental niches. Compared to...


Hyman, GlennBarona, ElizabethBiradar, Chandrashekhar M.Guevara, Edward D.Dixon, JohnBeebe, Stephen E.Castaño, Silvia ElenaAlabi, TunrayoGumma, Murali K.Sivasankar, ShobaRivera, OvidioEspinosa, HerlinCardona, Jorge[Geographic priorities for research and development on dryland cereals and legumes]Geographic priorities for research and development on dryland cereals and legumes

Net irrigated area in the Krishna river basin is varying quiet frequently due to water scarcity. Accurate area and extent of irrigated area in the Krishna River Basin is not available. State Irrigation Department projects large area under irrigation in the Krishna River Basin, which is attributed...


Gumma, Murali K.Thenkabail, Prasad S.Gautam, N.C.Gangadhara Rao, ParthasaradhiManohar, Velpuri[Irrigated area mapping using AVHRR, MODIS and LANDSAT ETM+ data for the Krishna River Basin, India]Irrigated area mapping using AVHRR, MODIS and LANDSAT ETM+ data for the Krishna River Basin, India

The objective of this study was to investigate the changes in cropland areas as a result of water availability using Moderate Resolution Imaging Spectroradiometer (MODIS) 250 m time-series data and spectral matching techniques (SMTs). The study was conducted in the Krishna River basin in India, a...


Gumma, Murali K.Thenkabail, Prasad S.Muralikrishna.I.V.Velpuri, M.N.Gangadhara Rao, ParthasaradhiDheeravath, VenkateswarluBiradar, Chandrashekhar M.Acharya, SreedharGaur, Anju[Changes in agricultural cropland areas between a water-surplus year and a water-deficit year impacting food security, determined using MODIS 250 m time-series data and spectral matching techniques, in the Krishna River basin (India).]Changes in agricultural cropland areas between a water-surplus year and a water-deficit year impacting food security, determined using MODIS 250 m time-series data and spectral matching techniques, in the Krishna River basin (India).

A lack of accuracy, uniqueness and the absence of systematic classification of cropland categories, together with long-pending updates of cropland mapping, are the primary challenges that need to be addressed in developing high-resolution cropland maps for south Asia. In this review, we analyzed ...


Patil, P.Gumma, Murali K.[A Review of the Available Land Cover and Cropland Maps for South Asia]A Review of the Available Land Cover and Cropland Maps for South Asia

Impact of dynamic land use and land cover changes on the livelihood of local communities and ecosystem services is a major concern. This is particularly evident in most dryland agricultural systems in South Asia. We study land use/land cover (LULC) changes over the last two decades in a watershed...


Ahmed, I.M.Gumma, Murali K.Kumar, S.Craufurd, Peter Q.Rafi, I.M.Haileslassie, Amare[Land use and agricultural change dynamics in SAT watersheds of southern India]Land use and agricultural change dynamics in SAT watersheds of southern India

Interannual variation in rainfall throughout Tamil Nadu has been causing frequent and noticeable land use changes despite the rapid development in groundwater irrigation. Identifying periodically water-stressed areas is the first and crucial step to minimizing negative effects on crop production....


Gumma, Murali K.Kajisa, K.Mohammed, I.A.Whitbread, Anthony M.Nelson, A.Rala, A.Kuppannan, Palanisami[Temporal change in land use by irrigation source in Tamil Nadu and management implications]Temporal change in land use by irrigation source in Tamil Nadu and management implications

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