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Corn responses to high levels of copper application as copper rich pig manure

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dc.contributor.authorBajracharya, Kesharien
dc.contributor.departmentAgronomyen
dc.date.accessioned2019-07-03T20:34:05Zen
dc.date.available2019-07-03T20:34:05Zen
dc.date.issued1987en
dc.description.abstractThe use of copper (Cu) in pig production to stimulate growth and improve feed efficiency is presently being questioned due to the potential environmental hazards associated with the repeated disposal of the resulting Cu rich manure in agricultural land. Results of field experiments conducted on three diverse Virginia soils indicated that the long-term application of Cu as either copper sulfate or Cu rich pig manure, even at high application rates (average application rate for 9 years was 108 metric tons of manure ha⁻¹ year⁻¹ or 32 kg Cu ha⁻¹ year⁻¹), had no adverse effects on corn yields. Copper levels in corn grain and leaf tissue were not increased by the nine annual applications of Cu rich manure or CuSO₄ , except for a slight increase in Cu concentration in corn grain from CuSO₄ application on only one soil. Copper concentrations in all plant tissues were well within normal ranges for all treatments at all sites. Corn grain yields were not decreased by Cu application on any of the three soils.en
dc.description.degreeM.S.en
dc.format.extentv, 49 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/91157en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 16911491en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1987.B346en
dc.subject.lcshCopper -- Excretionen
dc.subject.lcshCorn -- Fertilizersen
dc.subject.lcshSwine -- Feeding and feedsen
dc.titleCorn responses to high levels of copper application as copper rich pig manureen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineAgronomyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameM.S.en

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