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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Determining an economic injury level for the persea mite, Oligonychus perseae, a new pest of avocado in Israel
Year:
2011
Authors :
אלחנתי, ויקטור
;
.
גל, שירה
;
.
מעוז, יונתן
;
.
פלבסקי, אריק
;
.
Volume :
138
Co-Authors:
Maoz, Y., Department of Entomology, Institute of Plant Protection, Volcani Agricultural Research Organization (ARO), Newe-Ya'ar Research Center, POB 1021, Ramat Yishay, 30095, Israel
Gal, S., Department of Entomology, Institute of Plant Protection, Volcani Agricultural Research Organization (ARO), Newe-Ya'ar Research Center, POB 1021, Ramat Yishay, 30095, Israel
Zilberstein, M., Bio-Fly, Kibbutz Sdeh Eliyahu, Beit Shean Valley, 10810, Israel
Izhar, Y., Western Galilee R and D, MP Oshrat, 25212, Israel
Alchanatis, V., Institute of Agricultural Engineering, Volcani ARO, Volcani Center, POB 6, Bet Dagan, 50250, Israel
Coll, M., Department of Entomology, The Hebrew University of Jerusalem, POB 12, Rehovot 76100, Israel
Palevsky, E., Department of Entomology, Institute of Plant Protection, Volcani Agricultural Research Organization (ARO), Newe-Ya'ar Research Center, POB 1021, Ramat Yishay, 30095, Israel
Facilitators :
From page:
110
To page:
116
(
Total pages:
7
)
Abstract:
The persea mite, Oligonychus perseae Tuttle, Baker & Abbatiello (Acari: Tetranychidae), a pest of avocado, was first discovered in Israel in the autumn of 2001. It has since spread to most avocado growing areas in Israel. To establish an economic injury level (EIL), based on the percentage of leaf area damaged (PLAD), we conducted an extensive field study. For three consecutive seasons we created distinct pest infestation levels on the Hass avocado cv., by applying acaricides (spirodiclofen and abamectin) at 50, 100, and 250 mites per leaf levels, along with non-sprayed controls in a replicated block design. At harvest time we evaluated the level of leaf damage and fruit yields across treatments. In two out of the 3 years, trees sprayed at 50 and 100 mites per leaf levels had similar PLAD values, differing from trees treated at the 250 mites per leaf level and the non-treated control, the latter pair also being similar. Over the 3 years, mean yield attained at the two higher infestation levels was reduced by 20% in comparison to the mean yields recorded for plots sprayed at the lower thresholds. Accordingly, we suggest that scouts adopt an action threshold (AT) of 50-100 mites per leaf. Future research is needed to refine this AT. Mean annual cumulative mite days (CMDs) of the two higher levels was ca. 13500 ± 700 per leaf. Using the linear regression equation PLAD = 0.0009CMDs + 2.42, describing leaf damage as a function of CMDs, we estimated an EIL of ca. 15 PLAD. © 2010 The Authors. Entomologia Experimentalis et Applicata © 2010 The Netherlands Entomological Society.
Note:
Related Files :
Acari
Action threshold
Damage threshold
Israel
new record
Percent leaf area damage
Persea
Persea americana
Tetranychidae
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1570-7458.2010.01080.x
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
29406
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:46
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Scientific Publication
Determining an economic injury level for the persea mite, Oligonychus perseae, a new pest of avocado in Israel
138
Maoz, Y., Department of Entomology, Institute of Plant Protection, Volcani Agricultural Research Organization (ARO), Newe-Ya'ar Research Center, POB 1021, Ramat Yishay, 30095, Israel
Gal, S., Department of Entomology, Institute of Plant Protection, Volcani Agricultural Research Organization (ARO), Newe-Ya'ar Research Center, POB 1021, Ramat Yishay, 30095, Israel
Zilberstein, M., Bio-Fly, Kibbutz Sdeh Eliyahu, Beit Shean Valley, 10810, Israel
Izhar, Y., Western Galilee R and D, MP Oshrat, 25212, Israel
Alchanatis, V., Institute of Agricultural Engineering, Volcani ARO, Volcani Center, POB 6, Bet Dagan, 50250, Israel
Coll, M., Department of Entomology, The Hebrew University of Jerusalem, POB 12, Rehovot 76100, Israel
Palevsky, E., Department of Entomology, Institute of Plant Protection, Volcani Agricultural Research Organization (ARO), Newe-Ya'ar Research Center, POB 1021, Ramat Yishay, 30095, Israel
Determining an economic injury level for the persea mite, Oligonychus perseae, a new pest of avocado in Israel
The persea mite, Oligonychus perseae Tuttle, Baker & Abbatiello (Acari: Tetranychidae), a pest of avocado, was first discovered in Israel in the autumn of 2001. It has since spread to most avocado growing areas in Israel. To establish an economic injury level (EIL), based on the percentage of leaf area damaged (PLAD), we conducted an extensive field study. For three consecutive seasons we created distinct pest infestation levels on the Hass avocado cv., by applying acaricides (spirodiclofen and abamectin) at 50, 100, and 250 mites per leaf levels, along with non-sprayed controls in a replicated block design. At harvest time we evaluated the level of leaf damage and fruit yields across treatments. In two out of the 3 years, trees sprayed at 50 and 100 mites per leaf levels had similar PLAD values, differing from trees treated at the 250 mites per leaf level and the non-treated control, the latter pair also being similar. Over the 3 years, mean yield attained at the two higher infestation levels was reduced by 20% in comparison to the mean yields recorded for plots sprayed at the lower thresholds. Accordingly, we suggest that scouts adopt an action threshold (AT) of 50-100 mites per leaf. Future research is needed to refine this AT. Mean annual cumulative mite days (CMDs) of the two higher levels was ca. 13500 ± 700 per leaf. Using the linear regression equation PLAD = 0.0009CMDs + 2.42, describing leaf damage as a function of CMDs, we estimated an EIL of ca. 15 PLAD. © 2010 The Authors. Entomologia Experimentalis et Applicata © 2010 The Netherlands Entomological Society.
Scientific Publication
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