Dr. S. SRIDHARADr. N. S. MAVARKARASHWINI AMBADI2024-02-072024-02-072023-08-23https://krishikosh.egranth.ac.in/handle/1/5810206742Field experiments were conducted at the College of Agriculture, KSNUAHS, Shivamogga during the kharif 2020 and 2021 on red sandy clay loam soil on the influence of mulching materials, biochar and biostimulants on micrometeorological parameters, growth and yield of tomato. The experiment-I was laid out in RCBD with a factorial concept involving four mulching materials viz., Pongamia leaves @ 4 t ha-1, Polythene mulch, Paddy straw @ 10 t ha-1 and no mulch with three biostimulants namely Nano nitrogen @ 4 ml lit-1, Brassinolide @ 5 ml lit-1 and Control. Among the different mulching materials, paddy straw @ 10 t ha-1 recorded significantly higher plant height (158.91 cm), yield (81.36 t ha-1) and quality parameters as compared to other mulching materials. Among the biostimulants, brassinolide @ 5 ml lit-1 recorded higher plant height (157.67 cm), yield (78.36 t ha-1) and quality parameters as compared to other biostimulants. The experiment-II was laid out in RCBD with a factorial concept involving five biochars viz., Biochar 1 @ 5 t ha-1, Biochar 2 @ 5 t ha-1, BC1+ FYM (2.5 t ha-1 + 5 t ha-1), BC2 + FYM (2.5 t ha-1 + 5 t ha-1) and FYM @ 10 t ha-1 and with three biostimulants namely Humetus @ 5 ml lit-1, Brassinolide @ 5 ml lit-1 and Control. Among the different biochars, biochar 2 @ 5 t ha-1 recorded significantly higher plant height (129.47 cm), yield (71.56 t ha-1) and quality parameters as compared to other biochar. Among the biostimulants, brassinolide @ 5 ml lit-1 recorded higher plant height (128.53 cm), yield (73.89 t ha-1) and quality parameters compared to other biostimulants.EnglishThesis