Correct option is E
The correct option is (e) All of these. Drip irrigation helps in reducing weeds by limiting water application to the plant roots, reducing soil salinity by minimizing water wastage, and preventing soil erosion by providing water directly to the roots.
(a) Reduction of weed – Drip irrigation helps reduce weed growth by limiting the water supply to noncrop areas.
(b) Reduction in soil salinity – Minimizes overirrigation and water wastage.
(c) Reduction in soil erosion – Direct watering to plants reduces surface runoff.