S Use and 



332.6 calibration of the 

 3232 cyclone seeder for 

 A3ib7 control of the 

 1984 Klchardson ground 



squirrel on 



rangelandt pasture 



IKFORJ-IATIO?-' BULLETIN IIO. 7 



MOFTANA DEPARTMENT OF AGRICULTURE 



ENVIRONMENTAL tlAI.JAGEMENT DIVISION 



TECHNICi.L SERVICED HUREAU 



HELENA, MONTANA 5 9 620 



1904 



8tatf documents collection 

 DECg 1988 



MONTANA STATE LlbhJARY 



1515 E. 6th AVE. 

 HELENA, MONTANA 59620 



USE AND CALIBRATION OF THE CYCLONE SEEDER FOR CONTROL OF 

 THE RICHARDSON CROUND SQUIRREL ON RANCELAND , PAST[JRE AND 



HARVESTED FIELDS 



Cyclone Seeder Application 



To calibrate the cyclone seeder for Richardson ground squirrel 

 control utilizing ntrychnire grain bait, you will need the 

 following equipment and neiterials: 



-- cyclone seeder (electric fan rrodel) 



-- wood or metal frame v/ith inside measurement of one 



square foot 

 -- scale (2C lbs or greater capacity) 



— 5 gallon bucket or plastic tub 



— measuring tape 



-- untreated whole oats (20 to 30 lbs) 

 -- strychnine treated whole oats (i.e, 

 0.44% strychnine) 



Sebesta brand 



First, securely mount the cyclone seeder onto your vehicle, 

 either on the front or rear. Once fastened, determine what 

 vehicle speed you wish to maintain while applying bait. For most 

 terrains, five miles per hour has been satisfactory — you may want 

 a hand throttle to maintain a steady speed. A variation of only 

 one mile per hour in speed will increase or decrease the 

 application rate by 20 percent. Throughout remainder of the 

 calibration, be sure to use the sam.e vehicle speed. 



Using a small amount of untreated oats (5 lbs) , adjust the fan 

 speed while driving to get a swath of approximately 20 feet 

 (Figure 1). This should be done where there is no vegetation 

 (driveway, around farm buildings, etc) so you can observe the 

 oats on the ground. Once a uniform swath has been fixed, record 

 the fan setting for future use. 



Now, by adjusting the gate opening, determine the number of 

 kernels being applied per square foot . Across the 20 foot sv;ath, 

 randomly place the square foot frame 10-20 times and count the 

 kernels in each frame. Average these frame counts. Adjust the 

 gate opening and record gate settings for the following rates per 

 Ewath-acre. 



PLEASE RETURN 



