STUDYING OF SWITCHGRASS INSECTS DIVERSITY AND ASSASMENT OF THE POTENTIAL PESTS

T. Stefanovska, S. Kucherovska

Abstract


A perennial switchgrass (Panicumvirgatum L.) (C4) native to North America has good potential for biomass production because of its wide geographic distribution and adaptability to diverse environmental conditions. This biofuel crop has been under evaluation for commercial growing in Ukraine for eight years. Insect diversity determination and evaluation of insect pests might play role in yield reduction has not been done yet.

The objective of our study started in 2012 is to assess diversity of switchgrass insects by trophic groups and determine species that have pest status on nine varieties of switchgrass at Veseliy Podyl Experimental Station (Poltava region).We evaluated insects diversity and assessed changes over time in the densities of major insects’ trophic groups, identifying potential pests and natural enemies. Preliminary results indicated that long-terming growing of switchgrass can lead to formation of stable group of polyphagous and monophagous pests that are common for Poaceae family crops.


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