HR job title
- Professor
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Rajan, Nithya Associate Professor
Positions
- Associate Professor, Soil and Crop Sciences, College of Agriculture and Life Sciences
My current research areas include crop ecophysiology, agroecology and water management of agricultural crops. My research integrates measurements by a variety of techniques such as remote sensing, simulation modeling, soil and boundary layer flux (CO2, water vapor, and greenhouse gases) measurements. It involves scaling up point measurements to the field and landscape scales using modeling and geospatial data. It also includes the development of decision support tools for irrigation management. My other research interests include large scale agroecosystem studies addressing issues such as land use change, water sustainability, and climate change.
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Overview
Publications
selected publications
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academic article
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Shrestha, R., Adams, C. B., Abello, F., Delaune, P. B., Trostle, C., Rajan, N., Ale, S., & Ravelombola, W.
(2023).
Intensifying dryland wheat systems by integrating guar increased production and profitability. 197, 116608-116608.
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Hinson, P. O., Pinchak, B., Adams, C. B., Jones, D., Rajan, N., Kimura, E., & Somenahally, A.
(2023).
Forage and cattle production during organic transition in dual-purpose wheat systems. Agronomy Journal.
115(2), 873-886.
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Shrestha, R., Adams, C. B., & Rajan, N.
(2022).
Does the drought tolerance of guar [Cyamopsis tetragonoloba (L.) Taub.] extend belowground to root nodules?. 208(5), 599-608.
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Li, Z., Menefee, D., Yang, X., Cui, S., & Rajan, N.
(2022).
Simulating productivity of dryland cotton using APSIM, climate scenario analysis, and remote sensing. Agricultural and Forest Meteorology.
325, 109148-109148.
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Hinson, P. O., Adams, C. B., Pinchak, B., Jones, D., Rajan, N., Somenahally, A., & Kimura, E.
(2022).
Organic transition in dual-purpose wheat systems: Agronomic performance and soil nitrogen dynamics. 114(4), 2484-2500.
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MacMillan, J., Adams, C. B., Hinson, P. O., DeLaune, P. B., Rajan, N., & Trostle, C.
(2022).
Biological nitrogen fixation of cool-season legumes in agronomic systems of the Southern Great Plains. Agrosystems, Geosciences and Environment.
5(1),
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Adams, C. B., Ritchie, G. L., & Rajan, N.
(2021).
Cotton phenotyping and physiology monitoring with a proximal remote sensing system. Crop Science.
61(2), 1317-1327.
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MacMillan, J., Adams, C. B., Trostle, C., & Rajan, N.
(2021).
Testing the efficacy of existing USDA Rhizobium germplasm collection accessions as inoculants for guar. Industrial Crops and Products.
161, 113205-113205.
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Govindasamy, P., Mowrer, J., Rajan, N., Provin, T., Hons, F., & Bagavathiannan, M.
(2021).
Influence of long-term (36 years) tillage practices on soil physical properties in a grain sorghum experiment in Southeast Texas. Archives for Agronomy and Soil Science.
67(2), 234-244.
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Zapata, D., Rajan, N., Mowrer, J., Casey, K., Schnell, R., & Hons, F.
(2021).
Long-term tillage effect on with-in season variations in soil conditions and respiration from dryland winter wheat and soybean cropping systems. Scientific Reports.
11(1), 2344.
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Olanrewaju, S., Rajan, N., Ibrahim, A., Rudd, J. C., Liu, S., Sui, R., Jessup, K. E., & Xue, Q.
(2019).
Using aerial imagery and digital photography to monitor growth and yield in winter wheat. International Journal of Remote Sensing.
40(18), 6905-6929.
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Sharma, S., Rajan, N., Cui, S., Maas, S., Casey, K., Ale, S., & Jessup, R.
(2019).
Carbon and evapotranspiration dynamics of a non-native perennial grass with biofuel potential in the southern US Great Plains. Agricultural and Forest Meteorology.
269, 285-293.
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Anapalli, S. S., Fisher, D. K., Reddy, K. N., Rajan, N., & Pinnamaneni, S. R.
(2019).
Modeling evapotranspiration for irrigation water management in a humid climate. 225, 105731-105731.
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Kothari, K., Ale, S., Attia, A., Rajan, N., Xue, Q., & Munster, C. L.
(2019).
Potential climate change adaptation strategies for winter wheat production in the Texas High Plains. 225, 105764-105764.
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Shafian, S., Rajan, N., Schnell, R., Bagavathiannan, M., Valasek, J., Shi, Y., & Olsenholler, J.
(2018).
Unmanned aerial systems-based remote sensing for monitoring sorghum growth and development. PLoS ONE.
13(5), e0196605-e0196605.
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Chen, Y., Ale, S., & Rajan, N.
(2018).
Implications of biofuel-induced changes in land use and crop management on sustainability of agriculture in the Texas High Plains. Biomass and Bioenergy.
111, 13-21.
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Chen, Y., Ale, S., Rajan, N., & Munster, C.
(2017).
Assessing the hydrologic and water quality impacts of biofuel-induced changes in land use and management. GCB Bioenergy.
9(9), 1461-1475.
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Modala, N. R., Ale, S., Goldberg, D. W., Olivares, M., Munster, C. L., Rajan, N., & Feagin, R. A.
(2017).
Climate change projections for the Texas High Plains and Rolling Plains. Theoretical and Applied Climatology.
129(1-2), 263-280.
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Chen, Y., Ale, S., Rajan, N., & Srinivasan, R.
(2017).
Modeling the effects of land use change from cotton (Gossypium hirsutum L.) to perennial bioenergy grasses on watershed hydrology and water quality under changing climate. 192, 198-208.
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Gilmanov, T. G., Morgan, J. A., Hanan, N. P., Wylie, B. K., Rajan, N., Smith, D. P., & Howard, D. M.
(2017).
Productivity and CO2 Exchange of Great Plains Ecoregions. I. Shortgrass Steppe: Flux Tower Estimates. Rangeland Ecology and Management.
70(6), 700-717.
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Sharma, S., Rajan, N., Cui, S., Casey, K., Ale, S., Jessup, R., & Maas, S.
(2017).
Seasonal variability of evapotranspiration and carbon exchanges over a biomass sorghum field in the Southern US Great Plains. Biomass and Bioenergy.
105, 392-401.
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Chen, Y., Ale, S., & Rajan, N.
(2016).
Spatial Variability of Biofuel Production Potential and Hydrologic Fluxes of Land Use Change from Cotton (Gossypium hirsutum L.) to Alamo Switchgrass (Panicum virgatum L.) in the Texas High Plains. BioEnergy Research.
9(4), 1126-1141.
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Chen, Y., Ale, S., Rajan, N., Morgan, C., & Park, J.
(2016).
Hydrological responses of land use change from cotton (Gossypiumhirsutum L.) to cellulosic bioenergy crops in the Southern High Plains of Texas, USA. GCB Bioenergy.
8(5), 981-999.
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Attia, A., Rajan, N., Nair, S. S., DeLaune, P. B., Xue, Q., Ibrahim, A., & Hays, D. B.
(2016).
Modeling Cotton Lint Yield and Water Use Efficiency Responses to Irrigation Scheduling Using Cotton2K. Agronomy Journal.
108(4), 1614-1623.
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Attia, A., Rajan, N., Xue, Q., Nair, S., Ibrahim, A., & Hays, D.
(2016).
Application of DSSAT-CERES-Wheat model to simulate winter wheat response to irrigation management in the Texas High Plains. 165, 50-60.
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Adhikari, P., Ale, S., Bordovsky, J. P., Thorp, K. R., Modala, N. R., Rajan, N., & Barnes, E. M.
(2016).
Simulating future climate change impacts on seed cotton yield in the Texas High Plains using the CSM-CROPGRO-Cotton model. 164(P2), 317-330.
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Attia, A., & Rajan, N.
(2016).
Within-Season Growth and Spectral Reflectance of Cotton and their Relation to Lint Yield. Crop Science.
56(5), 2688-2701.
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Shi, Y., Thomasson, J. A., Murray, S. C., Pugh, N. A., Rooney, W. L., Shafian, S., ... Yang, C.
(2016).
Unmanned Aerial Vehicles for High-Throughput Phenotyping and Agronomic Research. PLoS ONE.
11(7), e0159781-e0159781.
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Rajan, N., Maas, S. J., & Cui, S.
(2015).
Extreme drought effects on summer evapotranspiration and energy balance of a grassland in the Southern Great Plains. Ecohydrology.
8(7), 1194-1204.
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Rajan, N., Maas, S., Kellison, R., Dollar, M., Cui, S., Sharma, S., & Attia, A.
(2015).
Emitter Uniformity and Application Efficiency for Centre- Pivot Irrigation Systems. Irrigation and Drainage.
64(3), 353-361.
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Attia, A., Rajan, N., Ritchie, G., Cui, S., Ibrahim, A., Hays, D., Xue, Q., & Wilborn, J.
(2015).
Yield, Quality, and Spectral Reflectance Responses of Cotton under Subsurface Drip Irrigation. Agronomy Journal.
107(4), 1355-1364.
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Govind, A., Cowling, S., Kumari, J., Rajan, N., & Al-Yaari, A.
(2015).
Distributed modeling of ecohydrological processes at high spatial resolution over a landscape having patches of managed forest stands and crop fields in SW Europe. ECOLOGICAL MODELLING.
297, 126-140.
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Modala, N. R., Ale, S., Rajan, N., Munster, C. L., DeLaune, P. B., Thorp, K. R., Nair, S. S., & Barnes, E. M.
(2015).
EVALUATION OF THE CSM-CROPGRO-COTTON MODEL FOR THE TEXAS ROLLING PLAINS REGION AND SIMULATION OF DEFICIT IRRIGATION STRATEGIES FOR INCREASING WATER USE EFFICIENCY. Transactions of the ASABE.
58(3), 685-696.
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Sharma, B., Ritchie, G. L., & Rajan, N.
(2015).
Near-Remote Green: Red Perpendicular Vegetation Index Ground Cover Fraction Estimation in Cotton. Crop Science.
55(5), 2252-2261.
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Cui, S., Rajan, N., Maas, S. J., & Youn, E.
(2014).
An automated soil line identification method using relevance vector machine. Remote Sensing Letters.
5(2), 175-184.
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Rajan, N., Puppala, N., Maas, S., Payton, P., & Nuti, R.
(2014).
Aerial Remote Sensing of Peanut Ground Cover. Agronomy Journal.
106(4), 1358-1364.
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Thorp, K., Ale, S., Bange, M., Barnes, E., Hoogenboom, G., Lascano, R., ... White, J.
(2014).
Development and Application of Process-based Simulation Models for Cotton Production: A Review of Past, Present, and Future Directions. Journal of Cotton Science.
18(1), 10-47.
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Chen, Y., Hu, W., Huang, B., Weindorf, D. C., Rajan, N., Liu, X., & Niedermann, S.
(2013).
Accumulation and health risk of heavy metals in vegetables from harmless and organic vegetable production systems of China. Ecotoxicology and Environmental Safety.
98, 324-330.
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Rajan, N., Maas, S. J., & Cui, S.
(2013).
Extreme Drought Effects on Carbon Dynamics of a Semiarid Pasture. Agronomy Journal.
105(6), 1749-1760.
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Snowden, C., Ritchie, G., Cave, J., Keeling, W., & Rajan, N.
(2013).
Multiple Irrigation Levels Affect Boll Distribution, Yield, and Fiber Micronaire in Cotton. Agronomy Journal.
105(6), 1536-1544.
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Chaudhuri, S., Ale, S., Delaune, P., & Rajan, N.
(2012).
Spatio-temporal variability of groundwater nitrate concentration in Texas: 1960 to 2010. Journal of Environmental Quality.
41(6), 1806-1817.
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Padilla, F., Maas, S. J., Gonzalez-Dugo, M. P., Mansilla, F., Rajan, N., Gavilan, P., & Dominguez, J.
(2012).
Monitoring regional wheat yield in Southern Spain using the GRAMI model and satellite imagery. Field Crops Research.
130, 145-154.
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Maas, S. J., & Rajan, N.
(2010).
Normalizing and Converting Image DC Data Using Scatter Plot Matching. Remote Sensing.
2(7), 1644-1661.
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Rajan, N., Maas, S. J., & Kathilankal, J. C.
(2010).
Estimating Crop Water Use of Cotton in the Texas High Plains. Agronomy Journal.
102(6), 1641-1651.
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Rajan, N., & Maas, S. J.
(2009).
Mapping crop ground cover using airborne multispectral digital imagery. Precision Agriculture.
10(4), 304-318.
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Maas, S. J., & Rajan, N.
(2008).
Estimating ground cover of field crops using medium-resolution multispectral satellite imagery. Agronomy Journal.
100(2), 320-327.
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Shrestha, R., Adams, C. B., Abello, F., Delaune, P. B., Trostle, C., Rajan, N., Ale, S., & Ravelombola, W.
(2023).
Intensifying dryland wheat systems by integrating guar increased production and profitability. 197, 116608-116608.
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conference paper
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Swaminathan, V., Thomasson, J. A., Rajan, N., Hardin, R. G., & Pokhrel, P.
(2022).
Early estimation of nitrogen stress and uptake in cotton based on spectral and morphological features extracted from UAV multispectral images. Proceedings of SPIE.
121140o-121140o-9.
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Wheeler, W., Sveinsson, B., Rosen, M., Altobelli, S., Conradi, M., Fabich, H., ... Rajan, N.
(2021).
Low Field Magnetic Resonance Imaging for Characterization of Root Architecture in Agronomic Soils. Hortscience.
S149-S149.
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Bain, N., Rajan, N., & Gooch, B.
(2017).
An Interactive Diagnostic Application for Food Crop Irrigation. Lecture Notes in Computer Science.
202-211.
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Rajan, N., Shafian, S., Cope, D., Bagavathiannan, M., Malambo, L., Popescu, S., & Rooney, B.
(2017).
Field research applications of UAS
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Murray, S. C., Knox, L., Hartley, B., Mendez-Dorado, M. A., Richardson, G., Thomasson, J. A., ... Rooney, W. L.
(2016).
High clearance phenotyping systems for season-long measurement of corn, sorghum and other row crops to complement unmanned aerial vehicle systems. Proceedings of SPIE.
986607-986607-8.
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Rajan, N., & Maas, S. J.
(2007).
Calibrating aerial imagery for estimating crop ground cover. 8-14.
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Maas, S., Rajan, N., Ko, J., Duesterhaus, J., & Lascano, R.
(2006).
Remote sensing approach for estimating daily crop water use. 26-32.
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Swaminathan, V., Thomasson, J. A., Rajan, N., Hardin, R. G., & Pokhrel, P.
(2022).
Early estimation of nitrogen stress and uptake in cotton based on spectral and morphological features extracted from UAV multispectral images. Proceedings of SPIE.
121140o-121140o-9.
Research
principal investigator on
- Innovative Sorghum-based Production Systems with Biological Nitrification Inhibition Property to Enhance Sustainability of Agroecosystems awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2019 - 2022
- Developing climate-smart and sustainable cropping systems in the Southern U.S. awarded by National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States) 2017 - 2022
- Investigating Biological Nitrification Inhibition (BNI) in Sorghum awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2018 - 2020
- A Field-Deployable Magnetic Resonance Imagining Rhizotron for Modeling and Enhancing Root Growth and Biogeochemical Function awarded by United States Department of Energy - (Washington D.C., District of Columbia, United States) 2017 - 2020
- Pathway to Organic: A Research, Extension, and Education Project in the Southeast US on Transitioning Cropping Systems awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2016 - 2020
- Impacts of Biofuel Induced Land Use Change On Energy, Water, Carbon and Greenhouse Gas Balances of the Southwestern U.S. Belt awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2012 - 2017
co-principal investigator on
- Research and Outreach to Support Transitioning to Organic Cotton Production in Central and Gulf Coast Texas awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2019 - 2022
- BREAD PHENO: High Throughput Phenotyping Early Stage Root Bulking in Cassava using Ground Penetrating Radar awarded by National Science Foundation - (Arlington, Virginia, United States) 2016 - 2020
- Developing GPR For Enhanced Root and Soil Organic Carbon Imaging awarded by United States Department of Energy - (Washington D.C., District of Columbia, United States) 2016 - 2019
investigator on
- Venezuela - Information Intelligence for Farm Managers awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2018
- Borlaug Ukraine-Irrigation Management awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2016 - 2018
- A Water and Risk Management Tool for Sustainable Production of Bioenergy Feedstocks-- awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2013 - 2018
- Borlaug Ukraine 2015 - Danylenko - TAMU awarded by United States Department of Agriculture - (Washington D.C., District of Columbia, United States) 2015 - 2017
Teaching
teaching activities
- SCSC441 Advances In Agronomic Sciences Instructor
- SCSC484 Internship Instructor
- SCSC489 Sptp: Adv In Agro Sciences Instructor
- SCSC491 Research Instructor
- SCSC607 Crop Physiology Instructor
- SCSC681 Seminar Instructor
- SCSC684 Professional Internship Instructor
- SCSC685 Directed Studies Instructor
- SCSC691 Research Instructor
Works By Students
chaired theses and dissertations
-
Attia Mohamed, Ahmed (2014-12). Modeling Cotton and Winter Wheat Growth and Yield Responses to Irrigation Management in the Texas High Plains and Rolling Plains.
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Chen, Yong (2016-12). Assessing the Impacts of Land Use Change from Cotton (Gossypium hirsutum L.) to Cellulosic Bioenergy Crops on Watershed Hydrology and Water Quality in the Texas High Plains.
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Sharma, Sumit (2017-05). Carbon, Evapotranspiration and Energy Balance Dynamics of Potential Bioenergy Crops Compared to Cotton in the Southern Great Plains.
Background
education and training
- Ph.D. in Agronomy, Texas Tech University - (Amarillo, Texas, United States) 2007
awards and honors
Contact
first name
- Nithya
has last name
- Rajan
mailing address
-
Texas A&M University
Soil & Crop Science
2474 TAMU
College Station, TX 77843-2474
USA
Other
In the News
- AgriLife helping set greenhouse gas emissions standards News Release
- OSU receives $3.1 million for sorghum study News Release
- nrajan@tamu.edu