國立虎尾科技大學 |

Replacing Herbicides with Groundcovers to Enhance Vineyard Sustainability.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Replacing Herbicides with Groundcovers to Enhance Vineyard Sustainability./
Author:	Loseke, Benjamin A.
Description:	1 online resource (177 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Contained By:	Dissertation Abstracts International79-10B(E).
Subject:	Horticulture. -
Online resource:	click for full text (PQDT)
ISBN:	9780355975826

Replacing Herbicides with Groundcovers to Enhance Vineyard Sustainability.
Loseke, Benjamin A.

Replacing Herbicides with Groundcovers to Enhance Vineyard Sustainability. - 1 online resource (177 pages)

Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.

Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2018.

Includes bibliographical references

In many Midwestern vineyards a three to four-foot weed-free strip is maintained directly beneath the vines to reduce vine-weed competition. Conventionally, this strip has been conserved with repeated applications of herbicide, mainly glyphosate. The necessity for this weed-free strip to reduce vine-weed competition has been well documented in more arid climates. However, in areas with higher soil fertility and adequate rainfall, this strip may be unnecessary. Moreover, stand establishment and early vine growth have not been well documented when planting groundcovers (GC) immediately following the vine planting. The main objective of this project is to assess the severity of competition for water between 'Edelweiss' grapevines and neighboring permanent GC treatments. In year one (2014), the vineyard and GCs were established, where the GCs were planted immediately after the vines. Midday leaf water potential (Psimd) measurements began in 2015 and lasted through 2017 to assess water competition between vines and GCs. Additional data collected during the four year project included: pruning weights, bud break, yield and fruit quality and soil nutrition. Generally, GC treatments had lower Psimd than the herbicide sprayed control, however, none of the treatments exhibited even slight water stress. Vine-GC competition was most apparent in the three years of pruning weights, where the most native grass GC treatment had up to 99% in 2014, 193% in 2015 and 183% in 2016 lower weights than the control. Harvest in 2016 and 2017 showed significantly lower yields between GC treatments and the control. However, no differences were found in berry quality (pH, Titratable Acidity, °Brix). An additional greenhouse project was done to define water stress thresholds for 'Edelweiss' grapevines using Psimd and high resolution thermal infrared images. Fully irrigated and 14-day dry vines exhibited a Psimd of --8.7 bars and --13.3 bars, respectively. The grapevines exhibited a mild, moderate and severe water stress level at 8, 10 and 12 days-dry, respectively (Psimd of --12 bars, --12.5 bars and --13 bars). Results suggest that planting groundcovers in both the alleyways and in-row areas of the vineyard during the first year of establishment is detrimental to vine growth and causes reduced yields.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355975826Subjects--Topical Terms:

1058420
Horticulture.
Index Terms--Genre/Form:

554714
Electronic books.

Replacing Herbicides with Groundcovers to Enhance Vineyard Sustainability.
LDR:03527ntm a2200325Ki 4500 001 917246
005 20181009045510.5
006 m o u
007 cr mn||||a|a||
008 190606s2018 xx obm 000 0 eng d
020 $a 9780355975826
035 $a (MiAaPQ)AAI10824400
035 $a (MiAaPQ)unl:13016
035 $a AAI10824400
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Loseke, Benjamin A. $3 1191236
245 1 0 $a Replacing Herbicides with Groundcovers to Enhance Vineyard Sustainability.
264 0 $c 2018
300 $a 1 online resource (177 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
500 $a Adviser: Paul E. Read.
502 $a Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2018.
504 $a Includes bibliographical references
520 $a In many Midwestern vineyards a three to four-foot weed-free strip is maintained directly beneath the vines to reduce vine-weed competition. Conventionally, this strip has been conserved with repeated applications of herbicide, mainly glyphosate. The necessity for this weed-free strip to reduce vine-weed competition has been well documented in more arid climates. However, in areas with higher soil fertility and adequate rainfall, this strip may be unnecessary. Moreover, stand establishment and early vine growth have not been well documented when planting groundcovers (GC) immediately following the vine planting. The main objective of this project is to assess the severity of competition for water between 'Edelweiss' grapevines and neighboring permanent GC treatments. In year one (2014), the vineyard and GCs were established, where the GCs were planted immediately after the vines. Midday leaf water potential (Psimd) measurements began in 2015 and lasted through 2017 to assess water competition between vines and GCs. Additional data collected during the four year project included: pruning weights, bud break, yield and fruit quality and soil nutrition. Generally, GC treatments had lower Psimd than the herbicide sprayed control, however, none of the treatments exhibited even slight water stress. Vine-GC competition was most apparent in the three years of pruning weights, where the most native grass GC treatment had up to 99% in 2014, 193% in 2015 and 183% in 2016 lower weights than the control. Harvest in 2016 and 2017 showed significantly lower yields between GC treatments and the control. However, no differences were found in berry quality (pH, Titratable Acidity, °Brix). An additional greenhouse project was done to define water stress thresholds for 'Edelweiss' grapevines using Psimd and high resolution thermal infrared images. Fully irrigated and 14-day dry vines exhibited a Psimd of --8.7 bars and --13.3 bars, respectively. The grapevines exhibited a mild, moderate and severe water stress level at 8, 10 and 12 days-dry, respectively (Psimd of --12 bars, --12.5 bars and --13 bars). Results suggest that planting groundcovers in both the alleyways and in-row areas of the vineyard during the first year of establishment is detrimental to vine growth and causes reduced yields.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Horticulture. $3 1058420
655 7 $a Electronic books. $2 local $3 554714
690 $a 0471
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a The University of Nebraska - Lincoln. $b Agronomy. $3 1191237
773 0 $t Dissertation Abstracts International $g 79-10B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10824400 $z click for full text (PQDT)