|Title:||檬果褐浮塵子(Idiocerus niveosparsus Leth.)之生態觀察及防治試驗||Other Titles:||Bionomics Observation and Control of Mango Brown Leafhopper (Idiocerus niveosparsus Leth.)||Authors:||溫宏治
|Issue Date:||5-Mar-1978||Publisher:||農業試驗所||Journal Volume:||27||Journal Issue:||1||Start page/Pages:||47-52||Source:||中華農業研究||Abstract:||
檬果褐浮塵子(Idiocerus niveosparsus Leth.)為檬果花期之主要害蟲，成蟲產卵於幼葉葉脈中肋或花梗組織內，使該組織表面產生縱裂，形成機械損傷，亦為病原菌浸入之門戶。若蟲、成蟲皆在花穗或嫩葉上刺吸汁液，發生嚴重時招致花穗枯萎、花蕾脫落，影響結果甚大。其分泌物會誘發煤病，阻礙光合作用，至後期尚可污染果實外觀。
The mango brown leafhopper (Idiocerus niveosparsus Leth.) is the most serious pest of the mango trees. The adults of the hopper lay eggs within the midribes of young leayes, stalklets and florets, causing a physical injury. The juice of the florescense is sucked by a large number of nymphs and adults, and result in withering of flowers. The secretion, known as honeydew, excreted by these insects, covers the florescense, shoots and leaves, the sooty molds develop on it in moist weather, but dries into dark grey incrustation, which not only interfere with photosynthetic function of the leaves but also result in nonsetting of fruits.
The leaf hoppers belong to the gradual metamorphosis, which molt 4 times with a total of 4 nymphal instars to adult. No hibernation was found in south part of Taiwan. The population density increases coincide with the flushes of flower of mango from Jan uary to the peak between March and April, and decreases gradually after April.
Ten insecticides were tested in field against the hoppers in two different orchards with different level of population. There were three trees in one block, replicated 4 times with complete randomized designed. Four application were applied at ten days intervals. Results were investigated ten days after the last application by counting the ecdysis of the nymph remained on the leaves. Ten leaves were randomized taken in each tree. Tamaron, Sevin and Lannate were found to be the promising insecticides and the same results were got in both fields as tested in this trial.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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