東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁 到查詢結果 [ null ]

切換: 標籤 | MARC模式 | ISBD

Cercospora Leaf Spot in Sugar Beet. ...

Vereijssen, Jessica,

FindBook

Google Book

Amazon

博客來

Cercospora Leaf Spot in Sugar Beet. Epidemiology, Life Cycle Components and Disease Management /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Cercospora Leaf Spot in Sugar Beet. Epidemiology, Life Cycle Components and Disease Management // Jessica Vereijssen.
作者:	Vereijssen, Jessica,
面頁冊數:	1 electronic resource (212 pages)
附註:	Source: Dissertations Abstracts International, Volume: 83-02, Section: B.
Contained By:	Dissertations Abstracts International83-02B.
標題:	Agriculture. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28239079
ISBN:	9798516028533

Cercospora Leaf Spot in Sugar Beet. Epidemiology, Life Cycle Components and Disease Management /
Vereijssen, Jessica,

Cercospora Leaf Spot in Sugar Beet. Epidemiology, Life Cycle Components and Disease Management /Jessica Vereijssen. - 1 electronic resource (212 pages)

Source: Dissertations Abstracts International, Volume: 83-02, Section: B.

Cercospora beticola, the causal agent of Cercospora leaf spot (CLS) in sugar beet, causes reductions in sugar yield and financial returns. Section I describes the epidemiology of CLS. Two disease severity indices were compared and their relation with sugar yield modelled. A linear curve fitted the Agronomica disease severity index with sugar yield in both severely and mildly infected fields, whereas for a leaf disease severity assessment this relationship was exponential and linear, respectively. The Agronomica disease severity index was less laborious and improved disease assessment. Using spatial and temporal models, the within-row dependencies of CLS disease severities was demonstrated. However, disease increase on a given plant was largely determined by disease on that plant. Similarly when describing the within-plant dynamics of disease, it was concluded that the major determinant of disease increase on a given leaf layer on a plant was from disease on that leaf layer. Spraying a fungicide twice changed the contribution of the lower leaf layers. In one mildly infected field, these leaf layers were more often significant in the model; in the other severely infected field less often. In section II studies on the life cycle of CLS are reported. It was demonstrated that C. beticola is able to infect sugar beet through the root in glasshouse, climate room, and in field experiments. The genetic variability of C. beticola was studied in an international collection of isolates. Between and within geographic regions, genetic variability is high. A C. beticola specific PCR primer was developed, which enabled detection of C. beticola in plant tissue. We showed systemic growth of C. beticola in a sugar beet seedling after root infection. Section III describes the development of a supervised control system. The use of an action threshold involving two early sprays and weather-based treatments resulted in sugar yields and financial returns similar to calendar sprayed treatments, and saved up to two fungicide applications.

English

ISBN: 9798516028533Subjects--Topical Terms:

518588
Agriculture.

Cercospora Leaf Spot in Sugar Beet. Epidemiology, Life Cycle Components and Disease Management /
LDR:03542nmm a22003973i 4500 001 2435892
005 20251014050536.5
006 m o d
007 cr|nu||||||||
008 261011s2004 miu||||||m |||||||eng d
020 $a 9798516028533
035 $a (MiAaPQD)AAI28239079
035 $a (MiAaPQD)Wageningen334630
035 $a AAI28239079
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Vereijssen, Jessica, $e author. $3 3826370
245 1 0 $a Cercospora Leaf Spot in Sugar Beet. Epidemiology, Life Cycle Components and Disease Management / $c Jessica Vereijssen.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2004
300 $a 1 electronic resource (212 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: Dissertations Abstracts International, Volume: 83-02, Section: B.
500 $a Advisors: Jeger, M. J.; Schneider, J. H.M.; Termorshuizen, A. J. Committee members: Asher, M. J.C. ; Crous , P. W. ; Stein , A.; Struik, P. C. .
502 $b Ph.D. $c Wageningen University and Research $d 2004.
520 $a Cercospora beticola, the causal agent of Cercospora leaf spot (CLS) in sugar beet, causes reductions in sugar yield and financial returns. Section I describes the epidemiology of CLS. Two disease severity indices were compared and their relation with sugar yield modelled. A linear curve fitted the Agronomica disease severity index with sugar yield in both severely and mildly infected fields, whereas for a leaf disease severity assessment this relationship was exponential and linear, respectively. The Agronomica disease severity index was less laborious and improved disease assessment. Using spatial and temporal models, the within-row dependencies of CLS disease severities was demonstrated. However, disease increase on a given plant was largely determined by disease on that plant. Similarly when describing the within-plant dynamics of disease, it was concluded that the major determinant of disease increase on a given leaf layer on a plant was from disease on that leaf layer. Spraying a fungicide twice changed the contribution of the lower leaf layers. In one mildly infected field, these leaf layers were more often significant in the model; in the other severely infected field less often. In section II studies on the life cycle of CLS are reported. It was demonstrated that C. beticola is able to infect sugar beet through the root in glasshouse, climate room, and in field experiments. The genetic variability of C. beticola was studied in an international collection of isolates. Between and within geographic regions, genetic variability is high. A C. beticola specific PCR primer was developed, which enabled detection of C. beticola in plant tissue. We showed systemic growth of C. beticola in a sugar beet seedling after root infection. Section III describes the development of a supervised control system. The use of an action threshold involving two early sprays and weather-based treatments resulted in sugar yields and financial returns similar to calendar sprayed treatments, and saved up to two fungicide applications.
546 $a English
590 $a School code: 2157
650 4 $a Agriculture. $3 518588
650 4 $a Plant diseases. $3 663172
650 4 $a Leaves. $3 603951
650 4 $a Plant pathology. $3 3174872
690 $a 0473
690 $a 0480
710 2 $a Wageningen University and Research. $e degree granting institution. $3 3815267
720 1 $a Jeger, M. J. $e degree supervisor.
720 1 $a Schneider, J. H.M. $e degree supervisor.
720 1 $a Termorshuizen, A. J. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 83-02B.
790 $a 2157
791 $a Ph.D.
792 $a 2004
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28239079