Data di Pubblicazione:
2015
Citazione:
Water balances and evapotranspiration in water- and dry-seeded rice systems / Linquist, B., Snyder, R.l., Anderson, F., Espino, L., Inglese, G., Marras, S., Moratile, R., Mutters, R., Nicolosi, P., Rejmanek, H., Russo, A., Shapland, T., Song, Z., Swelam, A., Tindula, G., Hill, J.. - In: IRRIGATION SCIENCE. - ISSN 0342-7188. - 33:5(2015), pp. 375-385. [10.1007/s00271-015-0474-4]
Abstract:
Rice is a crop that is usually grown under
flooded conditions and can require large amounts of water.
The objective of this 3-year study was to quantify water
use in water- (WS) and dry-seeded (DS) systems. In WS
systems, the field is continuously flooded, while in DS systems
the field is flush irrigated for the first month and then
flooded. Research was conducted on commercial rice fields
where the residual of the energy balance method using a
sonic anemometer and the eddy covariance method were
used to determine crop evapotranspiration (ETc) and crop
coefficient (Kc) values. In addition, inlet irrigation water
and tailwater drainage were determined. Across years,
there was no difference in ETc (averaged 862 mm), seasonal
Kc (averaged 1.07), irrigation water delivery (averaged
1839 mm) and calculated percolation and seepage
losses (averaged 269 mm) between systems. An analysis of the first month of the season, when the water management
between these two practices was different, indicated that
Kc and water use were lower in DS systems relative to WS
systems when there was only one irrigation flush during
this period, while two or three irrigation flushes resulted in
similar values between the two systems.
flooded conditions and can require large amounts of water.
The objective of this 3-year study was to quantify water
use in water- (WS) and dry-seeded (DS) systems. In WS
systems, the field is continuously flooded, while in DS systems
the field is flush irrigated for the first month and then
flooded. Research was conducted on commercial rice fields
where the residual of the energy balance method using a
sonic anemometer and the eddy covariance method were
used to determine crop evapotranspiration (ETc) and crop
coefficient (Kc) values. In addition, inlet irrigation water
and tailwater drainage were determined. Across years,
there was no difference in ETc (averaged 862 mm), seasonal
Kc (averaged 1.07), irrigation water delivery (averaged
1839 mm) and calculated percolation and seepage
losses (averaged 269 mm) between systems. An analysis of the first month of the season, when the water management
between these two practices was different, indicated that
Kc and water use were lower in DS systems relative to WS
systems when there was only one irrigation flush during
this period, while two or three irrigation flushes resulted in
similar values between the two systems.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Linquist, B; Snyder, Rl; Anderson, F; Espino, L; Inglese, G; Marras, Serena; Moratile, R; Mutters, R; Nicolosi, P; Rejmanek, H; Russo, A; Shapland, T; Song, Z; Swelam, A; Tindula, G; Hill, J.
Link alla scheda completa:
Link al Full Text:
Pubblicato in: