Sunnhemp Research Station (CRIJAF), Pratapgarh-230 001, Uttar Pradesh, (India).
1Present address: Entomology Section, Central Research Institute for Jute and Allied Fibres, Barrackpore-743 101, North 24 Parganas, W.B., (India).
In 2-year studies on the effect of different levels of boron (0 kg, 0.25 kg and 0.50 Kg/ha), zinc (0 kg, 5.00 kg and 10.00 kg/ha) and iron (0 kg, 1.0 kg and 2.0 kg/ha) on the incidence of top shoot borer in sunnhemp, it was found that application of these micronutrients alone or in combination was not significant statistically in 1st year, however, most of the micronutrient treatments showed increase of top shoot borer incidence over control (without any micronutrient). But in 2nd year the treatment of zinc and interaction between boron, zinc and iron was significant. Application of 10 kg/ha of Zn showed less infestation over no application.
