Font Size: a A A

Ecological Protocol On The Identifying Resistance To The Mite And An Acaricide Research In Mulberry

Posted on:2007-03-17Degree:DoctorType:Dissertation
Country:ChinaCandidate:F A WuFull Text:PDF
GTID:1103360185475391Subject:Special economic animal breeding
Abstract/Summary:PDF Full Text Request
The silk production is a staple of exportation in China, which a bumper mulberry foliage of positive quality has mostly contributed to. Unfortunately, it is constantly shared by the pests, which are responsible for the losing output of 10% the potential in the mulberry orchard. With the evolution of the industrial structure in the agriculture layout and newly-mulberry-cultivars expanding in China, the increasingly outbreaking pests account for the more and more mulberry-foliage reduction of output in the most Chinese sericulture district, and the indirect loss from the pesticides controlling them is increasing. As has been a key factor that hinders development of sericulture in our country.The carmine spider mite, Tetranychus cinnabarinus, is the most common in the sericulture region, also is one of the pests have been causing a bumper mulberry foliage of positive quality to decrease seriously. Adult and immature live on the undersides of leaves to sip the succus where they build silk nests mainly along the mid-rib and veins. As a result of the mite feeding, the mulberry leaf moisture content transpiration strengthens, the sponge organization and the stockade organization wither, the photosynthesis comes under the suppression, the leaf color gradually withers and turns yellow, characteristic necrotic spots appear on leaves, results in the mulberry leaf quality seriously dropping. Damage caused by large populations of the mite induces premature leaf drop, furthermore, heavily infested leaves turn completely pale and dry up, the entire mulberry orchard far looked like burned, the mulberry leaf falls off soon, . Trees stressed in this manner may abort developing left resulting in reduced yieldsThe spider mites on the mulberry are well known for the difficulty to control. It has a widespread spectrum of hosts. The ecology countermeasure is special (individual body small,...
Keywords/Search Tags:Mulberry cultivars (Morus L.), Ecological resistance to mites, Carmine spider mite (Tetranychus cinnabarinus), The intrinsic rate of increase ( rmj), Acaricide (propargite)
PDF Full Text Request
Related items