Three species of rice stem borers occurred in Tamil Nadu, of which yellow stem borer (YSB), Scirpophaga incertulas (Walker) was more predominant than pink stem borer (PSB). Sesamia inferens, (Walker) dark-headed borer (DSB), Chilo polychrysus (Meyrick) in both Kar (June-September) and Pishanum (Oct-Jan) seasons. The PSB was second most numerous (35.21%) in Kar and was relatively as abundant as YSB in Pishanum (48.43%). The DSB was less common during either season (4.29-7.18%). Varieties had variable compostion of stem borer infestation. The YSB infestation was more from early tillering to maximum tillering stage, decreasing gradually with increasing PSB infestation from flowering stage. YSB was the most common species in all districts. PSB was more abundant than DSB in Coimbatore, Tanjore, Tuticorin, Madurai and Dharmapuri districts, whereas DSB was more numerous in Tirunelveli, Kanyakumari and Vellore districts.
For MASU related issues :
PUBLISHER
SECRETARY
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
For MAJ related issues :
EDITOR-IN-CHIEF
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
Copyright © Madras Agricultural Journal | Masu Journal All rights reserved.
Please provide the registered email ID
Please enter the new password
