The metering device is a key segment of planters that legitimately influence crop improvement and yield dependent on the presentation of the specific design. Metering device B (Teflon) is intended to minimize seed damage during planting while improving metering efficiency and field capacity. An improved local jab planter for maize seeds which is adjusted for farmers developing under two hectares has been structured, built and tried. The major components of the planter are hopper, seed metering device, screen, inner housing, outer housing, spring and bushing tip. Field test was completed to decide the field productivity, field capacity, metering effectiveness and metering accuracy. Results showed that the planter has a metering efficiency of 92.6%, effective field capacity of 0.02 ha/h and field efficiency of 77%. The time required to plant 100 square meters of farmland was determined as 23 minutes and percentage seed damage was determined as 6.06%, 2.28% and 1.48% for metering devices A, B and C. This planter is efficient and can be embraced for maize planting by peasant farmers.
TABLE OF CONTENTS
DECLARATION i
DEDICATION ii
ACKNOWLEDGEMENT iii
ABSTRACT iv
TABLE OF CONTENTS v
LIST OF FIGURES ix
LIST OF TABLES x
CHAPTER ONE 1
1.0 INTRODUCTION 1
1.1 Statement of Problem 2
1.2 Justification 3
1.3 Objective of the Study 3
1.3.1 Specific Objectives 4
CHAPTER TWO 5
2.0 LITERATURE REVIEW 5
2.1 Physical and Mechanical Properties of Seeds 6
2.1.1 Size and Shape of Seed 6
2.1.2 Angle of Repose 7
2.1.3 Coefficient of Static Friction 8
2.2 Development and Evaluation of the Performance of Manually Operated Jab Planters 10
2.3 Design Consideration and Mode of Operation 12
2.3.1 Development and Performance of Seed Meters 12
2.4 Planters used for various crops 13
2.4.1 Techniques of Planting 16
CHAPTER THREE 18
3.0 MATERIALS AND METHODS 18
3.2 Instrumentation 19
3.2.1 Machines and tools used for the construction of the adapted maize planter 19
3.2.1.1 Lathe Machine 20
3.2.1.2 Drill Machine 20
3.2.1.3 Grinding Machine 20
3.2.1.4 Flat and Round File 21
3.2.1.5 Electric welding machine 21
3.2.1.6 Tape 22
3.2.1.7 Vernier Caliper 22
3.2.1.8 Centre punch 22
3.2.1.9 Hammer 22
3.2.1.10 Chisel 22
3.2.1.11 Vice bench 22
3.2.1.12 Hand grinder 23
3.2.1.13 Balance and Dry Oven 23
3.2.1.14 Graduated Cylinder 23
3.2.1.15 Digital Vernier Caliper 24
3.2.1.16 Instrument for Measuring Angle of Repose 24
3.3 Seeds used in the Study 24
3.4 Determination of the physiological properties of maize seed design of the locally adapted maize jab planter 25
3.4.1 Size 25
3.4.2 Shape 25
3.4.3 Bulk Density 26
3.4.4 Hundred Grain Weight 27
3.4.5 Angle of Repose 27
3.5 Design and Development of the Adapted Local Maize Jab Planter 27
3.5.1 Design Consideration of the Planter 27
3.5.2 Design of the Adapted Local Maize Jab Planter 28
3.5.3 Power developed by the operator of the adapted local jab planter 28
3.5.4 Design of the Seed Hopper of the Adapted Local Jab Planter 29
3.5.5 Design of the Seed Metering Unit 29
3.5.6 Design of the Bushing Tip 30
3.5.7 Determination of Planter Capacity 30
3.6 Description of the Various Components of the Planter 30
3.6.1 Hopper 30
3.6.2 Connector 31
3.6.3 Screen 31
3.6.7 Metering Device 31
3.6.8 Inner Housing 32
3.6.9 Spring Mechanism 32
3.6.10 Outer Housing 32
3.6.11 Transfer arm and Locks 32
3.6.12 Bushing Tip 33
3.7 To Evaluate the Performance of the Adapted Local Jab Maize Planter in the Laboratory as well as in the Field. 33
3.7.1 Laboratory test 34
3.7.1.1 Seeds of Maize 34
3.7.1.2 Calibration of the Adapted Jab Planter 34
3.7.1.3 Measurement of Seed Damage due to the Adapted Jab Planter 35
3.7.1.4 Field Test 35
3.7.1.5 Determination of Metering Efficiency 36
3.7.1.6 Determination of Metering Accuracy 37
3.8 Experimental Design 37
CHAPTER FOUR 38
4.0 RESULTS AND DISCUSSION 38
4.1 Physical Properties of Seed 38
4.1.1 Size and Shape 38
4.1.2 Test Weight 41
4.1.3 Angle of Repose 41
4.1.4 Bulk Density 41
4.1.5 Seed Germination Test 41
4.2 Calibration of the Adapted Local Jab Planter 42
4.2.1 Seed Rate of the Adapted Local Jab Planter 43
4.2.2 Seed Damage Test 44
4.3 Determination of Field Efficiency and Field Capacity of the Adapted Jab Planter 46
4.4 Determination of Metering Efficiency of the Adapted Jab Planter 47
CHAPTER FIVE 48
5.O CONCLUSION 48
5.1 RECOMMENDATION 48
REFERENCES 49
Dickson, J. & Dickson, J (2019). Modification of an adapted maize jab planter. Afribary. Retrieved from https://afribary.com/works/modification-of-an-adapted-maize-jab-planter-final
Dickson, Jesse, and Jesse Dickson "Modification of an adapted maize jab planter" Afribary. Afribary, 23 Sep. 2019, https://afribary.com/works/modification-of-an-adapted-maize-jab-planter-final. Accessed 25 Nov. 2024.
Dickson, Jesse, and Jesse Dickson . "Modification of an adapted maize jab planter". Afribary, Afribary, 23 Sep. 2019. Web. 25 Nov. 2024. < https://afribary.com/works/modification-of-an-adapted-maize-jab-planter-final >.
Dickson, Jesse and Dickson, Jesse . "Modification of an adapted maize jab planter" Afribary (2019). Accessed November 25, 2024. https://afribary.com/works/modification-of-an-adapted-maize-jab-planter-final