Three years (2014-15 to 2016-17) experimental data collected at Main Vegetable Research Station, Anand was used to calibrate and validate the SUBSTOR- potato model for three cultivars of potato (K. Badshah, K. Lokhar and K. Pokhraj). The validated model was used to simulate the tuber yield by changing the maximum and minimum temperature (+30 to -30C)in different months (November, December, January and February). Results revealed that the elevated temperature had negative effect on tuber yield and reduced temperature had positive effect on tuber yield. Among the varieties, K. Lokhar was least affected by the temperature variation. K. Pokhraj was found to be most sensitive to elevated temperature, while K. Badshah was most beneficial in reduced temperature. Temperature variation during December and January was found to have maximum effect on normal sown potato crop. The effect of minimum temperature on tuber yield was more than that observed with maximum temperature.

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A pot culture experiment was conducted in Dept of Soil Science & Agriculture Chemistry during 2010 to study the effect of farm yard manure (FYM) and poultry manure (PM) on detoxification of Cadmium in alfisol with Capsicum annum (cv. Kt-PI-19) as a test crop. The experiment was carried out with 24 treatment combinations (eight levels of Cd 0, 2.5, 5.0, 10.0, 20.0, 40.0, 80.0 and 160.0 mg kg -1 soil and three levels of organic manure; (control, FYM and PM @ 5 t ha-1 ) with three replications in split plot design. With the application of organic matter, dry matter yield was increased at different levels of Cd application (5.97 to 17.2 g pot -1 in FYM and 5.34 to 17.63 g pot -1 in PM treatment, respectively). Cd content in shoot was 2.1 ppm in control and increased to 209.90 ppm at 160 ppm of Cd application. The Cd content was 2.6 and 4.3 ppm in FYM and PM treatment and increased to 133.60 and 111.4 ppm, respectively with the application of 160 ppm of Cd. The organic amendments by chelating organic complexes reduce the phytotoxicity activity which retards the availability of Cd from soil to plant. There was also detoxification of Cd content in post harvest soil samples.