Shallow Water Table Effects on Photosynthesis and Corn Yield
dc.contributor.author | Kalita, Prasanta | |
dc.contributor.author | Kanwar, Rameshwar | |
dc.contributor.author | Kanwar, Rameshwar | |
dc.contributor.department | Agricultural and Biosystems Engineering | |
dc.date | 2018-02-17T06:13:18.000 | |
dc.date.accessioned | 2020-06-29T22:41:56Z | |
dc.date.available | 2020-06-29T22:41:56Z | |
dc.date.copyright | Wed Jan 01 00:00:00 UTC 1992 | |
dc.date.issued | 1992 | |
dc.description.abstract | <p>The effect of water-table management practices on leaf photosynthesis and corn yield was investigated under two different field conditions in 1989 and 1990. In one field, water-table depths were maintained at 0.3, 0.6, and 0.9 m in field lysimeters during the growing season. In the other field, average water-table depths of 0.2, 0.3, 0.6, 0.9, and 1.1 m were maintained through subirrigation. Photo-synthesis measurements were made regularly during the growing season, and yield data were collected at harvest. In 1989, a relatively dry year, photosynthesis rates were higher at shallow water-table depths than at deep water-table depths. In 1990, a very wet year, photosynthesis rates were not significantly different for water-table depths between 0.3 and 0.9 m, but rates decreased significantly for water-table depths shallower than 0.3 m. Statistical analysis indicates that water-table effects on photosynthesis rates were not consistent. However, effects of various water-table depths on photosynthetic water-use efficiency (PWUE) were highly significant in both dry and wet seasons. Corn yields increased with increasing water-table depths. At water-table depths of 0.2 to 0.3 m, corn yield decreased significantly. In both dry and wet seasons, effects of water-table treatments on grain yield were highly significant and significant relationships were obtained between PWUE values and yield.</p> | |
dc.description.comments | <p>This article was published in Transactions of the ASAE. 35(1): 97-104. doi:<a href="http://dx.doi.org/10.13031/2013.28575" target="_blank">10.13031/2013.28575</a>. Posted with permission.</p> | |
dc.format.mimetype | application/pdf | |
dc.identifier | archive/lib.dr.iastate.edu/abe_eng_pubs/696/ | |
dc.identifier.articleid | 1980 | |
dc.identifier.contextkey | 7850343 | |
dc.identifier.s3bucket | isulib-bepress-aws-west | |
dc.identifier.submissionpath | abe_eng_pubs/696 | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/1489 | |
dc.language.iso | en | |
dc.source.bitstream | archive/lib.dr.iastate.edu/abe_eng_pubs/696/1992_Kalita_ShallowWater.pdf|||Sat Jan 15 01:31:17 UTC 2022 | |
dc.source.uri | 10.13031/2013.28575 | |
dc.subject.disciplines | Agriculture | |
dc.subject.disciplines | Bioresource and Agricultural Engineering | |
dc.subject.disciplines | Hydrology | |
dc.subject.disciplines | Water Resource Management | |
dc.subject.keywords | Water-table management | |
dc.subject.keywords | Corn yield | |
dc.subject.keywords | Photosynthesis | |
dc.title | Shallow Water Table Effects on Photosynthesis and Corn Yield | |
dc.type | article | |
dc.type.genre | article | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | 5210e67e-b8da-4e17-be3f-843a09381196 | |
relation.isOrgUnitOfPublication | 8eb24241-0d92-4baf-ae75-08f716d30801 |
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