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dc.contributor.authorMurray-Cawte, Kate L.
dc.date.accessioned2013-12-16T00:52:45Z
dc.date.available2013-12-16T00:52:45Z
dc.date.issued2013
dc.identifier.urihttps://hdl.handle.net/10182/5747
dc.description.abstractIn dryland regions of New Zealand lucerne is sown as an alternative species to the most common pasture of perennial ryegrass and white clover. This is to maximise dry matter production and water use efficiency. This experiment compared the dry matter production of lucerne and perennial ryegrass pastures under full irrigation, irrigation every two weeks, irrigation every three weeks or no irrigation (dryland) on a Templeton silt loam and Eyre soil. Fully irrigated lucerne and perennial ryegrass had the highest dry matter yield of 18.7 t DM/ha. Unirrigated lucerne and perennial ryegrass had the lowest dry matter yields of 4.65 t DM/ha and 8.29 t DM/ha. The fully irrigated lucerne grew at the fastest rate of 6.69 kg DM/ha/˚Cd across the whole season. Unirrigated lucerne grew 3.03 kg DM/ha/˚Cd until soil moisture limited growth. After this point growth slowed to 0.39 kg DM/ha/˚Cd. Irrigated lucerne had the highest water use efficiency of 34.5 kg DM/ha/mm compared with 22.5 kg DM/ha/mm for all perennial ryegrass pastures and 11.2 kg DM/ha/mm for unirrigated lucerne. The low yield of unirrigated lucerne was unexpected and probably caused by an application of Glyphosate in June 2012. This experiment shows that lucerne could be sown instead of a perennial ryegrass/white clover pasture under irrigation due to higher dry matter production.en
dc.language.isoenen
dc.publisherLincoln Universityen
dc.subjectalfalfaen
dc.subjectglyphosateen
dc.subjectLolium perenneen
dc.subjectMedicago sativaen
dc.subjectthermal timeen
dc.subjectwater use efficiencyen
dc.subjectyielden
dc.titleDry matter production and water use of lucerne and perennial ryegrass under dryland and irrigated conditionsen
dc.typeDissertationen
thesis.degree.nameBachelor of Agricultural Scienceen
lu.thesis.supervisorMoot, Derrick J.
lu.contributor.unitDepartment of Agricultural Sciencesen
dc.subject.anzsrc070302 Agronomyen
dc.subject.anzsrc070303 Crop and Pasture Biochemistry and Physiologyen
dc.subject.anzsrc070304 Crop and Pasture Biomass and Bioproductsen


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