Characteristics of soil pockets resulting from AerWay rolling tines

Song Ai, Ying Chen*

Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba, Canada R3T 5V6, *ying_chen@umanitoba.ca

Introduction AerWay rolling tines

Ontario-based Holland Equipment

Create pockets on the ground

Low soil disturbance Reducing runoff and

erosion

Objectives Study pocket characteristics of AerWay

rolling tines Tillage depth Offset angle Type of tine

Site descriptions

Clay loam soil 57% sand, 22% silt, and 21%

clay located in Piney, Manitoba

Sandy soil 75% sand, 18% silt, and 7%

clay located in Menisino, Manitoba

Experimental design Types of rolling tines

Shatter tines and Leaf tines Offset angles

0 and 5 degree Injection depths

125 and 150 mm Number of treatments

8 Replication

4 Total number of test runs

64

Pocket opening

Clay loam Sandy soil

Measurements - Pocket opening and volume

Results and discussion

Pocket opening Clay loam

significant interaction effects penetration depth and offset angle

for both tines, pocket length increased with a greater penetration depth

pocket width increased with a greater tine offset angle

the greatest length, width, and area - 150 mm depth and 5° offset angle, regardless of the type of tine used

Pocket opening Sandy soil

not significant interaction effects penetration depth and offset angle

pocket length was affected by penetration depth for shatter tines only

with the same penetration depth and offset angle pocket opening created by Shatter tine was

greater than that created by Leaf tine

Pocket volume in the clay loam soil for different combinations of penetration

depth and offset angle

Pocket volume of AerWay rolling tines in the sandy soil

Conclusion Characteristics of the soil pockets varied

type of soil, type of tine, penetration depth, and offset angle

Shatter tines created larger pocket openings than Leaf tines

Pockets openings shorter and wider in the clay loam soil longer and narrower in the sandy soil

Conclusion The greater penetration depth resulted in

a bigger pocket opening length The larger offset angle increased pocket

volume Pocket volumes

sandy soil smaller than clay loam soil Greater injection depth, large offset

angle, heavier soil, and Shatter tines types favour large pocket volumes and opening

Question