首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Estimates of losses caused in paddy due to rice hispa, Dicladispa armigera (Oliver) (Coleoptera: Chrysomelidae)
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Estimates of losses caused in paddy due to rice hispa, Dicladispa armigera (Oliver) (Coleoptera: Chrysomelidae)

机译:稻草稻草(Dicladispa Armigera)(奥利弗)(奥利弗)(植物植物:Chrysomelidae)估计,稻田引起的损失估计

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摘要

Studies were undertaken for two consecutive years (kharif 2015 and 2016) at the CSK Himachal Pradesh Krishi Vishvidyalaya, Rice and Wheat Research Centre, Malan (Himachal Pradesh, India) under field conditions using paddy variety 'Kasturi Basmati'. Losses in paddy due to rice hispa, Dicladispa armigera (Oliver) were quantified in terms of release density (number of adults per tiller) and phenological stages of crop. Results revealed that both these aspects significantly influenced leaf damage as well as yield of paddy. Early stage release (20 DAT, days after transplanting) contributed to maximum leaf damage (69.9 PLDI (per cent leaf damage index)) and at the same time exerted a significant negative influence on various yield components, viz. number of tillers, panicles, grains and grain weight (g) for which the respective regression coefficients were 5.82, 5.73, 441.4 and 8.06, respectively (per 4 rice hills).
机译:在使用Paddy品种'Kasturi Basmati'的现场条件下,在CSK Himachal Pradesh Krishi Vishvidyalaya,米和小麦研究中心(Kharif 2015和2016),在Cydy Solutions'kasturi Basmati'的现场条件下进行了分校喜马偕尔·普拉德·克里希维斯·普拉德·克里希维斯·普拉德·克里希维·普拉德·克里希维岛 由于稻米稻草,Dicladispa armigera(oliver)在释放密度(每分蘖数量的数量)和作物的鉴效阶段,量化稻草损失。 结果表明,这两种方面都显着影响了叶片损伤以及稻田的产量。 早期发布(20个DAT,移植后的日子)导致最大叶片损伤(69.9 PLDI(百分之叶损伤指数)),同时对各种产量组分,viz施加了显着的负面影响。 相应回归系数为5.82,5.73,441.4和8.06的分蘖数,圆锥形,晶粒和谷物重量(g)分别(每4米山)。

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