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Volume 07

Advances in Crop Science and Technology

ISSN: 2329-8863

Agri 2019

August 15-16, 2019

August 15-16, 2019 | Rome, Italy

International Conference on

Agriculture & Horticulture

Population dynamics of insect pests of RABI Sorghum and their management through eco-friendly

approaches

S. S. Karabhantanal, Katageri I. S. , Sajjanar G. M.

and

Boranayaka M

All India Coordinated Sorghum Improvement Project, India

orghum (

Sorghum bicolor

(L.) Moench) is one of the most important cereal crops in the semi-arid tropics. India

contributes about 16%of the world’s sorghumproduction. InKarnatakamajor area under cultivation is in the Northern

dry zone of Karnataka. The production in these zone is affected by a wide array of biotic constraints, of which insect pests

are major once. As many as 150 species of insects have been recorded as pests of sorghum from emergence to late grain

filling stage. Among them sorghum shoot fly, (

Atherigona varia soccata

Rondani), stem borer (

Chilo partellus

), sugarcane

aphid [

Melanaphis sachari

(Zehntner)],Shoot bug or plant hopper (

Peregrinus maidis

Ashmead and head bug (

Calocoris

angustatus

) are major once and is reflected in low grain yields with avoidable losses ranging from 12 to 83%. In the present

investigation the efforts were made from 2008-09 to 2016-17 to know the pest dynamics on the crops over the years, Data

clearly indicated that shoot fly incidence was ranged from 2 to 51%with maximum during 2013-14. Stem borer incidence

is increasing trend, which was 2-6% in 2008-09 compared to 2016-17 season (1.76 - 10.34%.). Aphid (1- 9 grade) and shoot

bug (15-80 bugs/pl) incidence was highly variable depending upon the temperature and amount of rainfall received during

the cropping season. Further different integrated pest management module were framed and evaluated against the major

pests of rabi sorghum. Pooled data of two years revealed that shoot fly and stem borer dead heart as well as shoot bug

incidence was did not differ significantly among the modules. The cost economics data indicated that module comprising

of Seed treatment with Biofertlizers (Trichoderma+ PSB + Azospirillium)+ Btk @ 2g/lt at 25 DAE -Spray of Lecanicillium

lecani @ 2ml/l at 45DAE recorded highest net profit (Rs. 29584/ha ) with highest Benefit cost ratio of 2.46

Adv Crop Sci Tech 2019, Volume 07