Consider the following statements regarding pest management in rice and choose the correct options:
(a) ETL for rice earhead bug in milky stage is 109 bugs/hill.
(b) Use of synthetic pyrethroids may cause resurgence of sucking pest in rice.
(c) Tip drying and orange discoloration of rice leaves is a typical symptom of Recilla dorsalis.
(d) Alternate wetting and drying is a good management technique for controlling B.P.H. in rice.

Correct option is D

· Synthetic pyrethroids can cause resurgence of sucking pests like brown planthopper (BPH) by killing natural predators.
· Recilla dorsalis (green leafhopper) causes tip drying and orange discoloration in rice leaves.
· Alternate wetting and drying (AWD) is an effective method for controlling BPH, as it reduces standing water, which is favorable for the pest.