Affiliate faculty member in Department of Horticulture, WSU Viticulture and Enology Program, and WSU Center for Precision and Automated Agricultural Systems
Google Scholar total research citations: 722 h-index: 14 i10-index: 26
- Ph.D. University of Wyoming, Plant Sciences (Watershed Hydrology)
- M.S. University of Wyoming, Plant Sciences (Rangeland Remediation)
- B.S. Texas A&M University, Rangeland and Forestry Management
Recent Professional Experience:
- Professor/Scientist, WSU Crop & Soil Sciences Dept., Pullman, WA 2013-present
- Associate Dean, WSU CAHNRS, Pullman, WA 1997-2013
- Director, WSU Irrigated Agriculture Research/Extension Center, Prosser, WA 2009-2013
- Director, Extension Agriculture Programs, WSU Extension, Pullman, WA 2007-2009
Peer Reviewed Publications (last 5 years):
Ma, X.C., K.A. Sanguinet, and P.W. Jacoby. 2019. Direct root-zone irrigation outperforms surface drip irrigation on grape yield and water use efficiency while restricting shallow root growth in a semi-arid climate. Agric. Water Manage. (In review)
Ma, X.C., K.A. Sanguinet, and P.W. Jacoby. 2019. Performance of direct root-zone deficit irrigation on Vitis vinifera L. cv. Cabernet Sauvignon production and water use efficiency in semi-arid south-central Washington. Agric. Water Manage. 221:47-57. (Impact Factor: 3.565)
Chakraborty, M., L.R. Khot, S. Sankaran, and P.W. Jacoby. 2019. Evaluation of mobile 3D light detection and ranging-based canopy mapping system for tree fruit crops. Computer and Electronics in Agriculture (Impact Factor: 2.761)
Espinosa, C.Z., A.P. Rathnayake, M. Chakraborty, S. Sankaran, P.W. Jacoby, and L.R. Khot. 2018. Applicability of time-of-flight-based ground and multispectral aerial imaging for grapevine canopy vigour monitoring under direct root-zone deficit irrigation. Int’l. J. Remote Sensing. DOI: 10.1080/01431161.2018.1500047 (Impact Factor: 1.724).
Espinosa, C.Z., L.R. Khot, S. Sankaran, and P.W. Jacoby. 2017. High resolution multispectral and thermal remote sensing based water stress assessment in grapevines to evaluate subsurface irrigation technique effects. Remote Sensing 9(9):961-976; DOI: 10.3390/rs9090961. [(ISSN 2072-4292) Impact Factor 3.244].
Popular Press, Symposium, Conference Proceedings, and Abstracts
Jacoby, P.W., and X.C. Ma. 2018. Direct root-zone delivery to enhance deficit irrigation application (pdf). Ann. Meet., Irrigation Association Technical Program, Long Beach, CA. Dec. 2-6.
Jacoby, P.W., and X.C. Ma. 2018. Introducing direct root-zone deficit irrigation to conserve water and enhance grape quality in the Pacific Northwest. Crop and Soils Magazine Sept.- Oct.: pp. 34-37, 58. doi:10.2134/cs2018.51.0510
Ma, X.C., A.P. Smertenko, M. Keller, P.W. Jacoby, and K.A. Sanguinet. 2018. Enhancing crop production and water conservation through Direct Root-Zone irrigation strategy. ASA Section, Am. Soc. Agron. Ann. Meeting, Baltimore, MD. Nov. 4-7.
Jacoby, P.W., and X.C. Ma. 2018. Conserving water while increasing grape production through direct root-zone (DRZ) deficit irrigation. Ann. Meeting, Amer. Soc. Enology and Viticulture, Monterey, CA. June 18-21.
Hawkins, G., P.W. Jacoby, and X.C. Ma. 2018. Cabernet Sauvignon berry quality from vines irrigated through direct root-zone irrigation. Ann. Meeting, Amer. Soc. Enology and Viticulture, Monterey, CA. June 18-21.
Ma, X.C., K.A. Sanguinet, and P.W. Jacoby. 2018. Performance of Cabernet Sauvignon under direct root-zone deficit irrigation. Ann. Meeting, Amer. Soc. Enology and Viticulture, Monterey, CA. June 18-21.
Ma, X.C., P.W. Jacoby, and K.A. Sanguinet. 2018. Comparing effects of different irrigation rates and depths on wine grape production, grapevine growth, and root development through direct root-zone irrigation strategy. Ann. Meeting, WA Winegrowers, Kennewick, WA. Feb. 6-7.
Hawkins, G., P.W. Jacoby, X.C. Ma, and J.R. Thompson. 2018. Cabernet Sauvignon berry quality in vines watered through direct root zone irrigation. Ann. Meeting, WA Winegrowers, Kennewick, WA. Feb. 6-7. (Third place undergraduate poster contest)
Ma, X.C., P.W. Jacoby, and K.A.Sanguinet. 2017. Influences of direct root-zone deficit irrigation on wine grape production, grapevine growth, and root distribution in Pacific Northwest. In: Tech. Abs., Ann. Meeting, ASA-CSSA-SSSA. Oct. 6-10. Tampa, FL.
Ma, X.C., P.W. Jacoby, A. Torp, G. Hawkins, and L. Mongan. 2017. Effects of root-zone deficit irrigation on crop growth, fruit yield, and agroecosystem stability: using the wine grapevine Cabernet Sauvignon as a model. Ecol. Soc. America, Annual Meeting. August 6-11. Portland, OR.
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