Susceptibility of the stem pull area of mechanically harvested apples to blue mold decay and its control with a biocontrol agent

被引:24
作者
Janisiewicz, WJ [1 ]
Peterson, DL [1 ]
机构
[1] USDA ARS, Appalachian Fruit Res Stn, Kearneysville, WV 25430 USA
关键词
Malus x domestica; pome fruits; postharvest;
D O I
10.1094/PDIS.2004.88.6.662
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
A new harvester, which uses a rapid displacement actuator on the main scaffolds to remove apples from trees with narrow-inclined trellises, has shown good potential. With this technique, stem loss (stempulls) during harvest ranges from 20 to 57%, depending on the cultivar. This can create a potential point of entry for pathogens. We evaluated the susceptibility of the stem cavity area, with and without stems, to blue mold decay (Penicillium expansum) on three cultivars of mechanically harvested apples, and tested the effectiveness of the antagonist Pseudomonas syringae (used in BioSave 110) in controlling decay. Fruit with stempulls were more susceptible to blue mold decay than fruit with stems. On fruit with stempulls inoculated with P. expansum and stored for 2 months at 1 degreesC, decay incidence was 0% on 'Pink Lady', 8.3% on 'Ace Spur Delicious', and 41% on 'Empire'. On fruit with stems, there was no decay on all three cultivars. P. syringae reduced decay on 'Empire' with stempulls to 3.3%, and no decay occurred on the other two cultivars. Similar trends were observed on fruit stored at 22 degreesC for 14 days, but the incidence of decay was higher, and only `Pink Lady' had no decay on the antagonist-treated fruit. Although mechanical harvesting can predispose the stem cavity to decay in some cultivars, this problem can be alleviated using biological control without resorting to the use of synthetic pesticides.
引用
收藏
页码:662 / 664
页数:3
相关论文
共 10 条
[1]  
Blanpied G.D., 1992, CORNELL COOP EXT B, V221
[2]  
BROWN GK, 1983, ASAE
[3]  
GULLINO ML, 1994, ANNU REV PHYTOPATHOL, V32, P559, DOI 10.1146/annurev.py.32.090194.003015
[4]  
JANISIEWICZ WJ, 1992, PLANT DIS, V76, P555, DOI 10.1094/PD-76-0555
[5]   Efficacy of commercial formulation of two biofungicides for control of blue mold and gray mold of apples in cold storage [J].
Janisiewicz, WJ ;
Jeffers, SN .
CROP PROTECTION, 1997, 16 (07) :629-633
[6]   Biological control of postharvest diseases of fruits [J].
Janisiewicz, WJ ;
Korsten, L .
ANNUAL REVIEW OF PHYTOPATHOLOGY, 2002, 40 :411-441
[7]   HARVESTING SEMIDWARF FREESTANDING APPLE-TREES WITH AN OVER-THE-ROW MECHANICAL HARVESTER [J].
PETERSON, DL ;
MILLER, SS ;
WHITNEY, JD .
JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 1994, 119 (06) :1114-1120
[8]  
Peterson DL, 2003, APPL ENG AGRIC, V19, P545
[9]  
SPOTTS RA, 1993, TREE FRUIT POSTHARV, V4, P16
[10]  
USAL J, 1998, INT C PLANT PATHOL