This method requires that the fields are prepared with gentle slopes so that the water runs slowly by gravity and arrives at the lowest part of the farm, where it is collected by open channels for elimination or is recycled for use.
It is prone to diseases that are developed due to excess of soil moisture.
Surface irrigation may be difficult to use on irregular slopes as considerable land leveling may be required to achieve the required land gradients.
All soil types, except coarse sand with an infiltration rate of more than 30 mm/hour, can be used for surface irrigation. If the infiltration rate is higher than 30 mm/hour, sprinkler or drip irrigation should be used.
Root water absorbing capacity also differs. some root system penetrate deep into the soil, while others form a dense network of branch root that do not penetrate deep but cover a large area of soil at a shallow depth.
It is the water loss occurring from the processes of evaporation and transpiration.
ET also called as consumptive use. it denotes the quantity of water transpired by plants during their growth or retain in the plant tissue plus the moisture evaporated from the surface of the soil and the vegetation.
PVC Pipes & HDPE Pipes for Mainline and Sub-main
Control & Flush Valves SUBMAIN FLUSH VALVE Sizes: 40/50mm & 50/63 mm BALL VALVE Sizes: 20 mm to 90 mm GATE VALVE Sizes: 1½ inch and 2 inch BSP/NPT For controlling sections, sub-mains For cleaning mains and sub-mains THROTTALE VALVE Sizes: ½ inch to 4 inch
The drippers may clogged with physical impurities like soil particles, algae or Chemical impurities like mineral and salts. (Due to poor water quality or poor maintenance of farmers)
The rodents or insects can damage some components of the drip irrigation system. (Different Repellent are available)
The initial investment is higher as compared to other irrigation methods. (Pressurized Irrigation and use plasticuture)
Limitations of Micro Irrigation
Comparison of Irrigation Methods High Moderate Minimum Minimum 17. Control of diseases and pests High Moderate Minimum Minimum 16. Use of filters High Moderate Minimum Minimum 15. Quality of water High High Low Low 14. Energy requirements High High Low Low 13. Automation of the system Minimum Low High High 12. Leveling of the land is required Moderate Moderate High High 11. Labor cost High Moderate Minimum Minimum 10. Application of fertilizers and pesticides through the irrigation water Low High High High 9. Interference of other tasks by the irrigation method High Little Little Minimum 8. Soil aeration High Medium Medium Little 7. Uniformity in the crop yield High Medium Minimum Minimum 6. Crop yield per unit of applied water High Medium Minimum Minimum 5. Control of irrigation depth Minimum Medium High High 4. Surface drainage Minimum High High High 3. Water consumption by weeds Minimum High Medium High 2. Wetting of the foliage Minimum Medium High High 1. Evaporation loss Drip Sprinkler Furrow Flood TOPIC
Different irrigation Systems to Plants Drip Irrigation Surface Irrigation Horticultural Plants