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Low Incidence of Diseases

Conventional irrigation systems, which wet the entire soil surface and increase relative humidity of micro climate favour, the spread of diseases like root rots and damping off cause great loss to the farmers.

Under high soil moisture and relative humidity conditions, following diseases spread faster due to rapid formation and dispersal of zoospores.

  • • Root rot of cotton Phymatotrichum omnivorum
  • • Black root rot of tobacco Thielaviopsis basicola
  • • Collar root rot of citrus Phytophthora spp.
  • • Damping off of papaya Pythium spp.

Root knot and other nematode disease

  • • Sclerotium root rots Sclerotium rolfsii
  • • Armillaria root rot Armillariella mellea

Reduced Fertilizer Requirement

As there are no water losses through percolation and leaching, losses of nutrients along with the leaching water will be minimized in drip irrigation system. Thus the fertilizer use efficiency will increase and fertilizer requirement will be reduced.

Uniform Distribution of Water

In the conventional irrigation methods like flooding, border, furrow methods of irrigation, the opportune time for infiltration of water is more at one end where irrigation started and less at another end, leading to more water intake at starting end and less water intake at another end.

In drip irrigation system, distribution of water in all directions of the field is uniform as the opportune time is same for the entire field.

Utilizing Water sources with Slower Flow Velocity

Water sources with slower flow rate can be better utilized in the drip irrigation system, which is not possible in other methods of irrigation.

Demerits

Though, there are several advantages with the drip irrigation, which is efficient in saving irrigation water, there are some possible draw backs/ difficulties in adoption of this system on long term basis.

 
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