Economic injury level for sugarcane caused by the spittlebug Mahanarva fimbriolata (Stål) (Hemiptera:Cercopidae)
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چکیده
منابع مشابه
Development of the Spittlebug Mahanarva fimbriolata under Varying Photophase Conditions
The effects of varying photophase conditions on biological parameters of Mahanarva fimbriolata (Stal) (Hemiptera: Cercopidae), nymphs and adults were evaluated. Eggs of a late developmental stage were placed near sugarcane roots (cultivar RB739735) maintained in a greenhouse (21 ± 7 °C, 90 ± 10% RH). Nymphs and adults were exposed to the following photophase conditions: (a) 13:11 L:D as nymphs ...
متن کاملImpact of the Spittlebug Mahanarva spectabilis on Signal Grass
The aim of this study was to determine the damage in Brachiaria ruziziensis (Germain & Edvard) according to the density of and exposure time to adults of Mahanarva spectabilis (Distant, 1909) (Hemiptera:Cercopidae). Each plant was kept with 0, 12, 18, or 24 adults of M. spectabilis for five or ten days. Then, the insects were removed from the plant, and the following parameters were evaluated: ...
متن کاملGenetic variability of Mahanarva sp (Hemiptera: Cercopidae) collected from different sites in Brazil.
Spittlebugs are the leading cause of damage to tall grasses. Annual losses are estimated to reach 2.1 billion dollars in sugarcane crops and grazing land throughout the world. Correct identification of these species is difficult due to similarities in color, body size and male genitalia. Molecular markers have been useful in the identification and assessment of genetic diversity of many species...
متن کاملCROP PROTECTION Infl uence of Mahanarva fi mbriolata (Stål) (Hemiptera: Cercopidae) Injury on the Quality of Cane Juice
Mahanarva fi mbriolata (Stål) is an important pest in Latin America and causes signifi cant reduction in sugarcane productivity. There is no information regarding the effect of this pest on the quality of cane juice used for sugar and alcohol production. This work aimed at evaluating the quality of sugarcane juice from plants attacked by spittlebugs. The experiment was arranged in a completely ...
متن کاملThe acute liver injury in rat caused by gold nanoparticles
Objective(s): Gold nanoparticles (GNPs) command a great deal of attention for biomedical applications nowadays. The data about the degree of toxicity and the accumulation of gold nanoparticles in-vivo is not enough to judge. Materials and Methods: A total of 32 healthy male Wistar rats were randomly divided into 4 including: three GNP-treated and one control group. Groups 1, 2 and 3 receive...
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ژورنال
عنوان ژورنال: Scientia Agricola
سال: 2008
ISSN: 0103-9016
DOI: 10.1590/s0103-90162008000100003