STUDIES ON GALL FORMERS AND THEIR MANAGEMENT IN CHILLI cv. BYADGI DABBI
Loading...
Date
2017-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT
Abstract
The investigation on gall formers and their management in chilli cv. Byadgi
Dabbi was conducted at the Horticulture Research and Extension Centre (HREC),
Haveri (Devihosur), University of Horticultural Sciences, Bagalkot, during the year
2016-17. Survey conducted in three major growing districts of Karnataka viz., Haveri,
Dharwad and Gadag district revealed that Shiggoan taluk of Haveri district recorded
highest gall formers incidence compared to other taluks.
During the study it was found that incidence of gall formers highest in July
transplanted crop compared to August transplanted crop. Screening of chilli
germplasm for resistance to gall midge revealed that, out of 120 chilli germplasm only
22 germplasm were moderately susceptible (6-10 %) including Byadgi kaddi as
check, remaining 98 germplasm including Byadgi dabbi as check showed susceptible
reaction (11 - 25%) to gall midge incidence. None of the germplasm found highly
resistant (No damage), resistant (<1%), moderately resistant (1 – 5%) and highly
susceptible (>25%) to gall midge incidence.
Among the various management practices against chilli gall formers,
T2 (Neem cake @ 2.5 q/ha + Azadirachtin 10000 ppm @ 1 ml/l) registered its
superiority over rest of the treatments. Next best treatments in the order of efficacy
were T4 (Neem cake @ 2.5 q/ha + Diafenthiuron 50 WP @ 0.75 g/l), T5 (Neem cake
@ 2.5 q/ha + Imidacloprid 200 SL @ 0.25 ml/l) and T3 (Neem cake @ 2.5 q/ha +
Profenofos 50 EC @ 2 ml/l). Incorporation of neem cake @ 2.5 q/ ha at the time of
transplanting followed by spraying of Azadirachtin 10000 ppm @ 1 ml/ l coinciding
with peak flower bud initiation has recorded lowest gall formers incidence, highest
dry chilli yield of 7.88 q per ha and highest B:C ratio of 3.02 can be recommend as
effective and eco- friendly component for the management of chilli gall formers.
Description
Keywords
null