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.
Phylogeny and evolution of planthoppers
of the subfamily Orgeriinae (Homoptera, Dictyopharidae).
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.
Abstract--One new species of the Oriental planthopper
genus Varma Distant (1906) (Hemiptera: Fulgoroidea: Tropiduchidae), V.
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.
Collaborating scientists will further develop the understanding of hybrid vigour in rice and will work to develop hybrids with better resistance to brown planthopper
, a key insect pest.
Arocha Y, Lopez M, Fernandez M, Piriol B, Horta D, Peralta EL, Almeida R, Carvajal O, Picornell S, Wilson MR, Jones P (2005) Transmission of a sugarcane yellow leaf phytoplasma by the delphacid planthopper
Saecharosydne saccharivora, a new vector of sugarcane yellow leaf syndrome.
2002) tested a similar hypothesis but found no evidence that the low incidence of female macroptery in island populations of the delphicid planthopper
Toya venilia was attributable to the effect of isolation.
Comparison between free-choice and no-choice seedling bulk tests for evaluating resistance of rice cultivars to the whitebacked planthopper