L.A. Ramdas (1960)

Developed the Ramdas Gauge, an instrument used to measure effective rainfall under field conditions, which helped improve irrigation scheduling and water budgeting in agriculture.

N.G. Dastane (1967, IARI)

Introduced the Drum Culture Technique, a method for assessing evapotranspiration (ET), percolation losses, and effective rainfall specifically in rice cultivation, contributing significantly to water-use efficiency studies.

R.G. Sharma and N.G. Dastane (1968)

Designed the Sunken Screen Open Pan Evaporimeter, a device that enabled direct measurement of the potential evapotranspiration (PET) to actual evapotranspiration (ET) ratio in irrigated crops, providing a more scientific approach to irrigation management.

S.S. Parihar and B.S. Sandhu (1968)

Developed the PAU Moisture Gauge at Punjab Agricultural University. This innovation allowed for rapid estimation of soil moisture content in the field without the need for time-consuming oven drying methods.

Parihar et al. (1974)

Proposed the concept of IW/CPE ratio (Irrigation Water to Cumulative Pan Evaporation ratio), a practical tool used to determine when and how much to irrigate crops based on atmospheric demand and crop water needs.

R. Pal and S.R. Poonia (1979)

Introduced the Gypsum Bed Technique, which is used to neutralize sodic water from tube wells. This method helps in reclaiming alkali soils and making poor-quality irrigation water suitable for agriculture.