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dc.contributor.authorOttman, Michael Jen
dc.contributor.authorSheedy, Michael Den
dc.contributor.authorWard, Richard Wen
dc.date.accessioned2017-09-01T23:07:40Z
dc.date.available2017-09-01T23:07:40Z
dc.date.issued2016-11
dc.identifier.urihttp://hdl.handle.net/10150/625422
dc.description8 pp.en
dc.description.abstractWheat and barley are often planted later than optimum due to the timing of the previous crop or to reduce the risk of frost damage. It may be possible to partially compensate for lower yield potential of late plantings by increasing water and nitrogen rates beyond what would have an effect at more optimal plantings. The objective of this study is to evaluate the effects of nitrogen and water rates on late planted wheat and barley. A trial testing water and nitrogen rates for small grains planted late and at the optimal time was established at the Maricopa Ag Center. The experimental design was a split-split plot with main plots as input levels of water and nitrogen (low, medium, and high), subplots as varieties (Tiburon durum and Chico barley), sub-subplots as planting dates (15 December 2015 and 1 February 2016, and 3 replications. In this study, higher levels on inputs of water and nitrogen did not increase yield at later planting dates as we hypothesized. In fact, the highest yields were obtained at medium inputs of water and nitrogen regardless of planting date. The yields of the later planting date were not depressed as we expected due to unusually mild temperatures later in the spring which favored a later planting date this season.
dc.language.isoenen
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en
dc.relation.ispartofseriesUniversity of Arizona Cooperative Extension Service and Agricultural Experiment Station Bulletinen
dc.relation.urlhttp://uacals.org/64cen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.sourceCALS Publications Archive. The University of Arizona.en_US
dc.subjectPlanting dateen
dc.subjectYielden
dc.titleCan Yield of Late-planted Small Grains be Compensated by Water and Nitrogen Rates, 2016?en
dc.typetexten_US
dc.typeBooken_US
dc.identifier.calsaz1717-2016
refterms.dateFOA2018-06-20T07:20:10Z
html.description.abstractWheat and barley are often planted later than optimum due to the timing of the previous crop or to reduce the risk of frost damage. It may be possible to partially compensate for lower yield potential of late plantings by increasing water and nitrogen rates beyond what would have an effect at more optimal plantings. The objective of this study is to evaluate the effects of nitrogen and water rates on late planted wheat and barley. A trial testing water and nitrogen rates for small grains planted late and at the optimal time was established at the Maricopa Ag Center. The experimental design was a split-split plot with main plots as input levels of water and nitrogen (low, medium, and high), subplots as varieties (Tiburon durum and Chico barley), sub-subplots as planting dates (15 December 2015 and 1 February 2016, and 3 replications. In this study, higher levels on inputs of water and nitrogen did not increase yield at later planting dates as we hypothesized. In fact, the highest yields were obtained at medium inputs of water and nitrogen regardless of planting date. The yields of the later planting date were not depressed as we expected due to unusually mild temperatures later in the spring which favored a later planting date this season.


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