The effect of planting date on maize: Silage yield, starch content and leaf area

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dc.citation.volume44en_US
dc.contributor.authorTsimba, Ren_US
dc.contributor.authorEdmeades, GOen_US
dc.contributor.authorMillner, JPen_US
dc.contributor.authorKemp, PDen_US
dc.contributor.authorMorris, NJen_US
dc.coverage.spatialAlexandraen_US
dc.date.accessioned2017-04-09T21:53:56Z
dc.date.accessioned2017-05-18T01:14:20Z
dc.date.accessioned2017-05-18T01:15:23Z
dc.date.accessioned2017-05-18T01:15:54Z
dc.date.accessioned2017-05-18T04:49:33Z
dc.date.accessioned2017-06-06T03:32:33Z
dc.date.available2014en_US
dc.date.available2017-05-18T04:49:33Z
dc.date.available2017-06-06T03:32:33Z
dc.date.finish-date2014-11-07en_US
dc.date.finish-date2014-11-07en_US
dc.date.finish-date2014-11-07en_US
dc.date.finish-date2014-11-07en_US
dc.date.issued2014en_US
dc.date.start-date2014-11-05en_US
dc.date.start-date2014-11-05en_US
dc.date.start-date2014-11-05en_US
dc.date.start-date2014-11-05en_US
dc.description.abstractFour field experiments were established in the Waikato and Manawatu regions over two years to determine planting date (PD) influence on growth, silage yield (SY) and starch content of seven maize (Zea mays) hybrids. Silage yield response to PD was best described using quadratic regression models. The PD at which silage yield was maximised (optimum PD) was later in the cooler, high latitude environment of Manawatu (23 October) than the more northerly locations in Waikato (9-15 October). In both regions, planting 2 or 3 weeks either side of the optimum PD reduced SY by <5%. In Waikato, the optimum PD in a warmer than average spring (+1°C) was 1-2 weeks earlier. Under non-limiting moisture conditions later planting reduced yields in both Waikato (24.22 versus 21.06 t/ha) and Manawatu (30.09 versus 22.50 t/ha). This was attributed to decreased temperatures (<15°C) and radiation (<17 MJ/m2 /d) during grain filling. Due to more rapid reductions in autumn temperature and radiation in Manawatu, yield decline beyond the optimum PD was greater (-183 kg/ha/d (0.6%), R 2 =0.81) than Waikato (-50 to -85 kg/ha/d (0.3%), R 2 ≥0.67). Starch content was highest for plantings before 6 November, dropping thereafter with harvest index. Highest maximum leaf area index was observed at mean daily temperatures of 17-19°C.en_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.description.confidentialfalseen_US
dc.format.extent27 - 35en_US
dc.identifier.citationAgronomy New Zealand, 2014, 44 pp. 27 - 35en_US
dc.identifier.elements-id232348
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0110-6589en_US
dc.identifier.urihttp://hdl.handle.net/10179/11153
dc.relation.isPartOfAgronomy New Zealanden_US
dc.relation.isreplacedby123456789/4895
dc.relation.isreplacedbyhttp://hdl.handle.net/123456789/4895
dc.relation.replaceshttp://hdl.handle.net/123456789/4231
dc.relation.replaces123456789/4231
dc.relation.replaceshttp://hdl.handle.net/123456789/4887
dc.relation.replaces123456789/4887
dc.relation.replaceshttp://hdl.handle.net/123456789/4888
dc.relation.replaces123456789/4888
dc.relation.replaceshttp://hdl.handle.net/123456789/4889
dc.relation.replaces123456789/4889
dc.relation.urihttps://www.agronomysociety.org.nz/files/2014_3._Effect_of_planting_date_on_maize_silage.pdfen_US
dc.sourceAgronomy Society Annual Conferenceen_US
dc.subjectharvest indexen_US
dc.subjectleaf area indexen_US
dc.subjectstarchen_US
dc.subjectmaize silageen_US
dc.titleThe effect of planting date on maize: Silage yield, starch content and leaf areaen_US
dc.typeConference Paper
pubs.notesNot knownen_US
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/Institute of Agriculture and Environment
pubs.organisational-group/Massey University/College of Sciences/PVC's Office - College of Sciences
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