In any typical sawah (paddy field) there are 100 natural predators of threatening pests, especially of brown planthoppers
who breed like rabbits.
When rice planthoppers
occurred in the late growing stage, two rice hills randomly selected in each plot were disturbed by using a flapping motion, and the number of planthoppers
that fell onto a white basin placed beside the rice roots was counted.
For rice plants, this means pesticides kill the natural enemies of one of their biggest pests, the white-backed planthopper
In the laboratory this planthopper
always preferred E.
treatments were established in cages constructed of clear plastic cellulose butyrate tubing.
The authors then point out that in the case of the brown planthopper
in Indonesia, reducing pesticide use and reestablishing natural pest control led to more than $1 billion in benefits.
Such variation in disturbance may influence the persistence of Spartina habitats for planthopper
Externally, the new genus looks like the Australian genus Alleloplasis Waterhouse, 1839, one of the most peculiar and bizarre planthopper
genera, characterized by extremely narrow and long fore wings (stenopterism) and by the presence of sensory pits on abdominal sternites in the imago (Fig.
Effect of azadirachtin on acetylcholinesterase (AChE) activity and histology of the brown planthopper
Nilaparvata lugens (Stal).
Some scientists speculate that aerial pesticide spraying done to control gypsy moth populations in the 1970s may have decimated water-lily planthopper
populations, and hence be indirectly responsible for the decline in cricket frog numbers.
In other hand, Borreria repens and Arachis pentoii are best candidate for refugee plants in te plantation at Wonosari, due to the plants most visited by all three generalist predators of planthopper
tea leaves together.
A South American planthopper
is targeting water hyacinth, which lowers oxygen levels, causing fish to go belly up.
New state records are given for 16 planthopper
species; 15 planthopper
species are considered little-known or rarely collected.
I'd put a male planthopper
on a stem and play back a female call, and the male would do the same thing the elephants were doing: He would freeze, then press down on his legs, go forward a little bit, then freeze again.
theis Lepidoptera Yellow stem borer Scripophaga incertulas 14 11 (Walker) White stem borer Scripophaga innota (Walker) 12 13 Pink stem borer Sesamia inferens (Walker) 4 3 Stripped borer Chilo suppressalis (Walker) 3 2 Sorghumstemborer Chilo partellus (Swinhoe) 1 -- Leaf folder Cnaphalocrocis medinalis 5 4 (Guenee) Leaf folder Mythimna separata (Walker) 2 3 Homoptera Whitebacked Sogatella furcifera (Horvath) 7 9 planthopper
Green leafhopper Nephotettix nigripictus (Stal.