Minimal Tillage Practices.pptx

Minimal Tillage Practices
Tillage
Types of Tillage
Minimal tillage - How ?
Different methods of minimal tillage

1. Minimal Tillage Practices Dr. K. VANANGAMUDI, Ph. D., Post. Doc (USA) Formerly Dean (Agriculture), Agri. College & Research Institute, TNAU, Coimbatore, Dean, Adhiparashakthi Agricultural College, Kalavai Professor & Head, Seed Science& Technology, Tamil Nadu Agricultural University, Coimbatore-641003, Tamil Nadu. e-mail: [email protected] Website: https://trinityculturalacademy.com/ YouTube: https://www.youtube.com/channel/UCWGv08j5jaZ-nkvz46HrBVw

2. Tillage Mechanical manipulation of soil structure In conventional tillage - energy is often wasted and sometimes, soil structure is destroyed. To overcome this, several new concepts introduced namely Minimum tillage Zero tillage Stubble mulch tillage Minimal Tillage Practices

3. Conventional tillage Conservation tillage

4. Minimal tillage - How ? Reducing tillage operations to minimum to ensure good seed bed for rapid germination and satisfactory crop stand. Omitting few operations that do not give much benefit Soil disturbance to a lesser extent Combining two or more agricultural operations. Eg . Seed cum fertilizer drill.

5. Reducing tillage operations

6. Advantages Disadvantages In-situ decomposition of plant residues to improve soil conditions. To improve high infiltration Less resistance to root growth Less soil compaction Less soil erosion Low germinatio n of seeds Application of more nitrogen as the rate of decomposition of organic matter is low Reduction in nodulation of legume crops. Continuous use of herbicides cause pollution Difficulty in sowing

7. Different methods of minimal tillage

8. Row zone tillage After primary tillage with mould board plough, secondary tillage like disking and harrowing are reduced Secondary tillage is done in row zone only

9. Plough plant tillage After ploughing, special planter is used to pulverize row zone and sow the seeds. Wheel track planting Tractor is used for sowing and wheels pulverize the row zone.

10. Zero or No tillage

11. Stubble mulch tillage Leaving stubble or crop residue essentially in place on the land as a surface cover during a fallow period. Prevent soil erosion from wind or water Conserve soil moisture Reduce CO 2 emission

12. Q & A Minimal tillage causes a. Low infiltration b. High resistance to root growth c. Less soil compaction d. Higher soil erosion Minimal tillage can be practised by a. Complete disc ploughing b. Row zone tillage c. Complete disc harrowing d. Complete cultivator ploughing

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