West Bengal

Ridge and Furrow Sowing Method with Close Spacing Reduces the Salinity Effect of Sunflower Production in the Ganges Delta

“…The solute potential of the soil solutions was calculated by the following equation: Ψs = -22580 x EC1:5/W, where, Ψs is the solute potential (kPa), EC1:5 is the electrical conductivity (dS m −1 ) of the 1:5 soil:water extract and W is the soil water content (% w/w). This formula is based on that of Rengasamy (2010), with the additional considerations that the mix of salts in the soils of Ganges-Brahmaputra-Delta is ∼2/3 NaCl and ∼1/3 MgSO4 (Bandyopadhyay et al, 2003), and that the slopes of the lines between EC and solute potential for these two salts were as reported by Wolf et al (1986).…”

Evaluation of the APSIM Model in Rice-Lentil Cropping System in a Complex Coastal Saline Environment

“…The periodic variability of electrical conductivity (EC) and soil water content (gravimetric method) were estimated at intervals of 15 days at the above-mentioned depth (Bhattacharyya et al, 2018). To compare with APSIM simulated values, the transformation of the recorded soil electrical conductivity (EC) measurements (soil: water ratio of 1:5) to chloride deposition (kg ha -1 ) is conducted, as outlined by Bandyopadhyay et al (2003) and He et al (2013). The various transformation equations used in this experiment were successfully tested in the distinct experimental fields of coastal saline zones of India and Bangladesh (Mainuddin et al, 2020;Paul et al, 2020aPaul et al, , 2020bSarkar, 2021).…”

Optimizing Farm Plan in Saline and Normal Areas of West Bengal - A Lexicographic Goal Programming Approach

“…The major part of the coastal saline areas in West Bengal is in the Sundarban area of districts South 24 Parganas, parts of North 24 Parganas and Purba Midnapore (Bandyopadhyay et al, 2003). Sampling units were selected with the help of the multistage sampling technique.…”