alate aphid
Recently Published Documents


TOTAL DOCUMENTS

15
(FIVE YEARS 0)

H-INDEX

6
(FIVE YEARS 0)

2017 ◽  
Vol 42 (5) ◽  
pp. 645-656 ◽  
Author(s):  
ALDO F. RÍOS MARTÍNEZ ◽  
ALEJANDRO C. COSTAMAGNA
Keyword(s):  

Plant Disease ◽  
2016 ◽  
Vol 100 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Kota Kimura ◽  
Tomio Usugi ◽  
Hideo Hoshi ◽  
Ayana Kato ◽  
Tsuyoshi Ono ◽  
...  

Plum pox virus (PPV) is transmitted by infected buds and aphids. It is important to analyze the outbreak trends and viruliferous rate of aphids in areas where the occurrence of PPV is reported, so as to develop strategies for disease control. Between April 2011 and December 2012, yellow insect-trapping adhesive plates were placed for 2 days at a time each week in an area where PPV is occurring in Japan. Outbreak trends were analyzed based on the trapped alate aphid samples, and up to 50 of them were tested per week to identify species and determine the rate of viruliferous specimens. Although the number of aphids varied according to survey year, three peaks were noticeable in each year. Based on the sequence data for the mitochondrial cytochrome c oxidase I region, approximately 40 different species of aphid were trapped in both years. Of the five dominant species of aphids identified during the 2 years, Aphis spiraecola was trapped in large numbers. PPV-positive aphids were higher in fall onward, when the total number of trapped aphids decreased, than in spring and summer, when a larger number of aphids was caught. PPV transmission tests using the most abundant species revealed that A. spiraecola, A. craccivora, A. gossypii, and Rhopalosiphum maidis were transmitters, although A. spiraecola is likely of epidemiological significance.


2012 ◽  
Vol 47 (4) ◽  
pp. 505-510 ◽  
Author(s):  
Francisco Jorge Cividanes ◽  
Terezinha Monteiro dos Santos-Cividanes

The objective of this work was to predict the occurrence of alates of Brevicoryne brassicae, Lipaphis erysimi, and Myzus persicae (Hemiptera, Aphididae) in Brassicaceae. The alate aphids were collected in yellow water traps from July 1997 to August 2005. Aphid population peaks were predicted using a degree‑day model. The meteorological factors, temperature, air relative humidity, rainfall, and sunshine hours, were used to provide precision indexes to evaluate the best predictor for the date of the first capture of alate aphids by the traps. The degree‑day model indicated that the peak population of the evaluated aphid species can be predicted using one of the following biofix dates: January 1st, June 1st, and the date of the first capture of the alate aphid species by the yellow water traps. The best predictor of B. brassicae occurrence is the number of days with minimum temperature >15°C, and of L. erysimi and M. persicae, the number of days with rainfall occurrence.


Plant Disease ◽  
2007 ◽  
Vol 91 (5) ◽  
pp. 509-516 ◽  
Author(s):  
J. P. Damicone ◽  
J. V. Edelson ◽  
J. L. Sherwood ◽  
L. D. Myers ◽  
J. E. Motes

In five field trials over 3 years, control of aphid-transmitted, nonpersistent virus diseases on pumpkin, caused mostly by the potyviruses Watermelon mosaic virus (WMV) and Papaya ringspot virus type-W (PRSV-W), was achieved by intercropping with grain sorghum, as opposed to clean tillage. Reductions in disease incidence ranged from 43 to 96% (P ≤ 0.05). Surrounding pumpkin plots with borders of peanut, soybean, or corn was not effective. Borders of grain sorghum were effective, but disease control was generally less than for the intercrop treatment. Intercropping soybean and peanut with pumpkin reduced disease incidence by 27 to 60% (P ≤ 0.05), but disease control generally was less than for grain sorghum. Peak periods of alate aphid immigration generally preceded virus disease outbreaks by 7 to 14 days. However, alate landing rates, as measured in green tile traps, did not differ among treatments. Marketable yield was not increased by the intercrop treatments, and yield was reduced by up to 50% for the intercrop treatment with grain sorghum in two trials. The use of grass-selective herbicide applied along pumpkin rows, reduced seeding rates of the intercrops, or mowing did not alleviate the adverse effects of competition between pumpkin and the grain sorghum intercrop on yield.


2004 ◽  
Vol 33 (6) ◽  
pp. 1593-1601 ◽  
Author(s):  
Brian A. Nault ◽  
Denis A. Shah ◽  
Helene R. Dillard ◽  
Arlie C. McFaul

2000 ◽  
Vol 53 ◽  
pp. 87-92 ◽  
Author(s):  
K. Bicknell ◽  
G. Greer ◽  
D.A.J. Teulon

Crop Food Research has developed a model to forecast the occurrence of severe barley yellow dwarf virus (BYDV) incidence in autumnsown wheat crops in Canterbury based on alate aphid flights This information is potentially valuable to growers in Canterbury who can modify their inputs each year according to the risk of BYDV This paper uses expected gross margins to estimate the financial benefit of the Crop Food Research BYDV Forecast Service to arable growers in Canterbury Results suggest that the value of the BYDV Forecast Service is positive but varies greatly depending upon forecast accuracy and adoption rate


Sign in / Sign up

Export Citation Format

Share Document