Influence of Plant Growth Stage on Grape Phylloxera (Homoptera: Phylloxeridae) Populations
نویسندگان
چکیده
منابع مشابه
The Efficacy of Chinese Medicinal Herbs towards Grape Phylloxera (Daktulosphaira vitifoliae Fitch) (Hemiptera, Phylloxeridae)
Bio-insecticidal effects of seven Chinese medicinal herbs on mortality, fecundity, developmental periods and life table parameters of the grape phylloxera were investigated. In an excised root bioassay experiment aqueous extracts from seven Chinese medicinal herbs increased grape phylloxera first instar mortality (26.00-38.50%) compared to other instars. The intrinsic rate of increase (rm), fin...
متن کاملConstant Temperature Life Table Studies of Populations of Grape Phylloxera from Washington and Oregon, USA
Grape phylloxera is a recent pest threatening to destroy over 1100 ha of selfrooted winegrapes in the Pacific Northwest region of the USA. Some vineyards have coexisted with this pest for over 15 years while others have been devastated in less than 5 years. We conducted this study to determine if life processes of populations of phylloxera from four different areas in the Pacific Northwest, USA...
متن کاملGrowth in Tissue Culture of Single-Cell Clones From Grape Stem & Phylloxera Gall.
Information about the behavior of clones of plant tissue of single-cell origin is valuable for our understanding of diseased and normal cell growth. Questions appeared about the variability of the cells in the insect-induced galls. Perhaps only a few diseased cells were responsible for the mass of abnormal, rapidly increasing cells, and the majority of the other cells provided a favorable nutri...
متن کاملThe Sublethal Effects of β-Ecdysterone, a Highly Active Compound from Achyranthes bidentata Blume, on Grape Phylloxera, Daktulosphaira vitifoliae Fitch
Grape phylloxera, Daktulosphaira vitifoliae (Fitch) (Hemiptera, Phylloxeridae), is a very destructive insect pest of grapevines. Intercropping of Achyranthes bidentata Blume (f. Amaranthaceae) and Vitis spp. grapevines can be useful to control this pest. In the present study, the toxicity of 22 compounds, known to be present in A. bidentata, to grape phylloxera was evaluated. All treatments wer...
متن کاملInfluence of Plant Population Density on Growth and Yield of Stevia (Stevia Rebaudiana Bertoni L.)
Objective: An experiment was conducted at Wondo Genet Agricultural Research Center in the production season of 2013/14 and 2014/15 with the objective of identifying the best combination of intra and inter-row spacing for optimum plant population density of stevia. Methods: The experiment was conducted using five intra-row spacing (20cm, 25cm, 30cm, 35cm, and 40...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Environmental Entomology
سال: 2002
ISSN: 0046-225X,1938-2936
DOI: 10.1603/0046-225x-31.1.120