ITEM VIEW

Narrow rows and high maize plant population improve water use and grain yield under conservation agriculture

dc.contributor.authorHaarhoff, Stephanus Johannesen_ZA
dc.contributor.authorSwanepoel, Pieter A.en_ZA
dc.date.accessioned2020-01-20T10:13:07Z
dc.date.available2020-01-20T10:13:07Z
dc.date.issued2020-03-11
dc.identifier.citationHaarhoff, S. J. & Swanepoel, P. A. 2019. Narrow rows and high maize plant population improve water use and grain yield under conservation agriculture. Agronomy Journal, doi:10.1002/agj2.20085
dc.identifier.issn1435-0645 (online)
dc.identifier.issn0002-1962 (print)
dc.identifier.otherdoi:10.1002/agj2.20085
dc.identifier.urihttp://hdl.handle.net/10019.1/107367
dc.descriptionCITATION: Haarhoff, S. J. & Swanepoel, P. A. 2019. Narrow rows and high maize plant population improve water use and grain yield under conservation agriculture. Agronomy Journal, doi:10.1002/agj2.20085.
dc.descriptionThe original publication is available at https://acsess.onlinelibrary.wiley.com
dc.description.abstractThe relationship between maize (Zea mays L.) population density and grain yield is influenced by soil and crop management strategies, including Conservation Agriculture (CA). Yet little is known about the response of maize grain yield to varying plant population and/or row spacing under CA. A three‐year study was conducted under CA to evaluate the effects of plant population and row spacing on maize grain yield, plant available soil water and soil temperature. Plant populations ranging from 40 000 to 80 000 plants ha−1 were evaluated at three row spacings (0.5, 0.76 and 1.0 m). The response of maize grain yield to plant population was highly variable between seasons: it was not affected by plant population in the season with the highest early‐season rainfall but increased with increasing plant population in the driest season and in the season with well‐distributed near average rainfall. Higher plant populations resulted in lower soil water levels, presumably due to greater water extraction. Plant population affected soil water availability in the 20–80 cm soil layer in Season 2, while plant population affected soil water availability at all soil layers except the 10–20 and 60–80 cm soil layers in Season 3. Rapid maize leaf‐canopy closure provided by increased plant population and narrower row spacing is critical to adequately utilize the benefits associated with CA.en_ZA
dc.description.urihttps://acsess.onlinelibrary.wiley.com/doi/10.1002/agj2.20085
dc.format.extent27 pages : illustrations (some color)en_ZA
dc.language.isoen_ZAen_ZA
dc.publisherAmerican Society of Agronomy
dc.subjectMaize -- Spacingen_ZA
dc.subjectCrops and wateren_ZA
dc.subjectCorn -- Spacingen_ZA
dc.subjectGrain -- Spacingen_ZA
dc.subjectGrain -- Yielden_ZA
dc.subjectSoil managementen_ZA
dc.subjectSoil temperatureen_ZA
dc.subjectConservation Agricultureen_ZA
dc.titleNarrow rows and high maize plant population improve water use and grain yield under conservation agricultureen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderAuthors retain copyright


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

ITEM VIEW