東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Using scouting and disease forecaste...

Bounds, Ryan Scott.

Linked to FindBook

Google Book

Amazon

博客來

Using scouting and disease forecasters to manage foliar blights of carrots (Alternaria dauci, Cercospora carotae).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Using scouting and disease forecasters to manage foliar blights of carrots (Alternaria dauci, Cercospora carotae)./
Author:	Bounds, Ryan Scott.
Description:	121 p.
Notes:	Source: Masters Abstracts International, Volume: 42-01, page: 0140.
Contained By:	Masters Abstracts International42-01.
Subject:	Agriculture, Plant Pathology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1414630
ISBN:	0496194194

Using scouting and disease forecasters to manage foliar blights of carrots (Alternaria dauci, Cercospora carotae).
Bounds, Ryan Scott.

Using scouting and disease forecasters to manage foliar blights of carrots (Alternaria dauci, Cercospora carotae). - 121 p.

Source: Masters Abstracts International, Volume: 42-01, page: 0140.

Thesis (M.S.)--Michigan State University, 2003.

Fungal foliar blights of carrots, caused by Alternaria dauci and Cercospora carotae, result in necrotic lesions on leaves and petioles that may cause defoliation, decreasing the efficiency of mechanical harvest. Fungicides are applied every 7 to 10 days, regardless of weather conditions or disease pressure. The objectives of these studies were to evaluate Tom-Cast and other disease forecasters for timing sprays and to determine when to apply the first spray based on field scouting and disease incidence thresholds. The Tom-Cast system was the most effective and reliable disease forecaster tested, resulting in a fungicide savings of

ISBN: 0496194194Subjects--Topical Terms:

1028950
Agriculture, Plant Pathology.

Using scouting and disease forecasters to manage foliar blights of carrots (Alternaria dauci, Cercospora carotae).
LDR:02303nmm 2200265 4500 001 1845685
005 20051101072046.5
008 130614s2003 eng d
020 $a 0496194194
035 $a (UnM)AAI1414630
035 $a AAI1414630
040 $a UnM $c UnM
100 1 $a Bounds, Ryan Scott. $3 1933832
245 1 0 $a Using scouting and disease forecasters to manage foliar blights of carrots (Alternaria dauci, Cercospora carotae).
300 $a 121 p.
500 $a Source: Masters Abstracts International, Volume: 42-01, page: 0140.
500 $a Adviser: Mary K. Hausbeck.
502 $a Thesis (M.S.)--Michigan State University, 2003.
520 $a Fungal foliar blights of carrots, caused by Alternaria dauci and Cercospora carotae, result in necrotic lesions on leaves and petioles that may cause defoliation, decreasing the efficiency of mechanical harvest. Fungicides are applied every 7 to 10 days, regardless of weather conditions or disease pressure. The objectives of these studies were to evaluate Tom-Cast and other disease forecasters for timing sprays and to determine when to apply the first spray based on field scouting and disease incidence thresholds. The Tom-Cast system was the most effective and reliable disease forecaster tested, resulting in a fungicide savings of $4 7.25 and $5 4.88 per acre in 2001 and 2002, respectively, compared with the 7-day schedule, while providing similar blight control. Chlorothalonil alternated with azoxystrobin was applied every 10 days or according to Tom-Cast with a threshold of 15, 20, or 25 disease severity values (DSVs). Sprays for these programs were initiated prior to symptom development, or when foliage was infected at a trace, 5%, or 10% level. Up to four sprays were omitted saving $4 6.05 and $4 1.85 per acre in 2001 and 2002, respectively, and comparable disease control was achieved by initiating applications when a trace amount of the foliage was blighted and applying subsequent sprays according to Tom-Cast 15 DSV, compared with the 10-day spray schedule initiated prior to disease development.
590 $a School code: 0128.
650 4 $a Agriculture, Plant Pathology. $3 1028950
690 $a 0480
710 2 0 $a Michigan State University. $3 676168
773 0 $t Masters Abstracts International $g 42-01.
790 1 0 $a Hausbeck, Mary K., $e advisor
790 $a 0128
791 $a M.S.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1414630