{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/110186"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/110186","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Nitrogen and phosphorus fertilization for efficient corn production in Virginia","abstract":"Traditional com fertilization methods of broadcasting N fertilizer, and applying P fertilizer to soils testing high to very high in plant-available P, can be inefficent. Experiments were conducted at several locations in Virginia to evaluate if band applications of N fertilizer are more efficient than surface broadcast applications, to determine optimum starter-band and sidedress N rates for com grown in Virginia, to evaluate possible indicators of optimum starter-band and sidedress N rates, and to determine if there is any response to P fertilizer application to com grown on soils testing high to very high in plant-available P. Starter-band N rates of 11, 34, 56, and 78 kg ha⁻¹, and a treatment of 67 kg ha⁻¹ broadcast plus 11 kg ha⁻¹ in a starter-band, were applied in combination with sidedress-N rates of 0, 67, 134, and 202 kg ha⁻¹. In the phosphorus experiment, starter-band rates of 0, 22, 45, and 67 kg P₂O₅ ha⁻¹ were applied. Band application of N increased com plant tissue N content at most locations compared to broadcast application. Fifty-six kg ha⁻¹ was determined to be an economically viable starter-band N rate for com grown in Virginia. Optimum sidedress N rates were determined to be site- and season-dependent and no indicators of optimum starter-band N rates or sidedress N rates were observed. On soils testing high to very high in plant-available P, grain yield did not respond to additions of P fertilizer.","abstract_html":"Traditional com fertilization methods of broadcasting N fertilizer, and applying P fertilizer to soils testing high to very high in plant-available P, can be inefficent. Experiments were conducted at several locations in Virginia to evaluate if band applications of N fertilizer are more efficient than surface broadcast applications, to determine optimum starter-band and sidedress N rates for com grown in Virginia, to evaluate possible indicators of optimum starter-band and sidedress N rates, and to determine if there is any response to P fertilizer application to com grown on soils testing high to very high in plant-available P. Starter-band N rates of 11, 34, 56, and 78 kg ha⁻¹, and a treatment of 67 kg ha⁻¹ broadcast plus 11 kg ha⁻¹ in a starter-band, were applied in combination with sidedress-N rates of 0, 67, 134, and 202 kg ha⁻¹. In the phosphorus experiment, starter-band rates of 0, 22, 45, and 67 kg P₂O₅ ha⁻¹ were applied. Band application of N increased com plant tissue N content at most locations compared to broadcast application. Fifty-six kg ha⁻¹ was determined to be an economically viable starter-band N rate for com grown in Virginia. Optimum sidedress N rates were determined to be site- and season-dependent and no indicators of optimum starter-band N rates or sidedress N rates were observed. On soils testing high to very high in plant-available P, grain yield did not respond to additions of P fertilizer.","abstract_has_math":false,"creators":["Martz, Marvin E."],"institution":"Virginia Polytechnic Institute and State University","degree_name":"M.S.","degree_level":"masters","degree_discipline":"Crop and Soil Environmental Sciences","degree_department":"Crop and Soil Environmental Sciences","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1995,"date_issued":"1995","date_published":"1995","updated_at":"2026-07-22T22:20:16Z","subjects":[],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/110186","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Crop and Soil Environmental Sciences"]},{"key":"dc:creator","label":"Author","values":["Martz, Marvin E."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2022-05-24T17:21:36Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2022-05-24T17:21:36Z"]},{"key":"dc:date.issued","label":"Date","values":["1995"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute and State University"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Crop and Soil Environmental Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/110186"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Traditional com fertilization methods of broadcasting N fertilizer, and applying P fertilizer to soils testing high to very high in plant-available P, can be inefficent. Experiments were conducted at several locations in Virginia to evaluate if band applications of N fertilizer are more efficient than surface broadcast applications, to determine optimum starter-band and sidedress N rates for com grown in Virginia, to evaluate possible indicators of optimum starter-band and sidedress N rates, and to determine if there is any response to P fertilizer application to com grown on soils testing high to very high in plant-available P. Starter-band N rates of 11, 34, 56, and 78 kg ha⁻¹, and a treatment of 67 kg ha⁻¹ broadcast plus 11 kg ha⁻¹ in a starter-band, were applied in combination with sidedress-N rates of 0, 67, 134, and 202 kg ha⁻¹. In the phosphorus experiment, starter-band rates of 0, 22, 45, and 67 kg P₂O₅ ha⁻¹ were applied. Band application of N increased com plant tissue N content at most locations compared to broadcast application. Fifty-six kg ha⁻¹ was determined to be an economically viable starter-band N rate for com grown in Virginia. Optimum sidedress N rates were determined to be site- and season-dependent and no indicators of optimum starter-band N rates or sidedress N rates were observed. On soils testing high to very high in plant-available P, grain yield did not respond to additions of P fertilizer."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["M.S."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Nitrogen and phosphorus fertilization for efficient corn production in Virginia"]}]}],"canonical_facts":{"dc:contributor.department":["Crop and Soil Environmental Sciences"],"dc:creator":["Martz, Marvin E."],"dc:date.accessioned":["2022-05-24T17:21:36Z"],"dc:date.available":["2022-05-24T17:21:36Z"],"dc:date.issued":["1995"],"dc:description.abstract":["Traditional com fertilization methods of broadcasting N fertilizer, and applying P fertilizer to soils testing high to very high in plant-available P, can be inefficent. Experiments were conducted at several locations in Virginia to evaluate if band applications of N fertilizer are more efficient than surface broadcast applications, to determine optimum starter-band and sidedress N rates for com grown in Virginia, to evaluate possible indicators of optimum starter-band and sidedress N rates, and to determine if there is any response to P fertilizer application to com grown on soils testing high to very high in plant-available P. Starter-band N rates of 11, 34, 56, and 78 kg ha⁻¹, and a treatment of 67 kg ha⁻¹ broadcast plus 11 kg ha⁻¹ in a starter-band, were applied in combination with sidedress-N rates of 0, 67, 134, and 202 kg ha⁻¹. In the phosphorus experiment, starter-band rates of 0, 22, 45, and 67 kg P₂O₅ ha⁻¹ were applied. Band application of N increased com plant tissue N content at most locations compared to broadcast application. Fifty-six kg ha⁻¹ was determined to be an economically viable starter-band N rate for com grown in Virginia. Optimum sidedress N rates were determined to be site- and season-dependent and no indicators of optimum starter-band N rates or sidedress N rates were observed. On soils testing high to very high in plant-available P, grain yield did not respond to additions of P fertilizer."],"dc:description.degree":["M.S."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10919/110186"],"dc:language.iso":["en"],"dc:publisher":["Virginia Polytechnic Institute and State University"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Nitrogen and phosphorus fertilization for efficient corn production in Virginia"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Crop and Soil Environmental Sciences"],"thesis:degree_level":["masters"],"thesis:degree_name":["M.S."],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:20:16Z"}