Author(s):

Hemlata Dhakad, SK Verma, SP Singh, Dharmendra Gaur, Vinaya Arya, Kalpana Sharma, Naresh Gupta, As Tomar, SK Sharma and BK Rajput

Abstract: The present investigation was carried out to study the effect of levels of sulphur in combination of organic and inorganic sources of nutrient on plant growth and yield of potato (Solanum tuberosum L.) during 2017-18 and 2018-19. The experiment was laid out in randomized block design with ten treatments in three replications. The treatment combinations of four levels of S application i.e. 30, 60, 90 and 150 kg ha^-1 in combinatons of 100% RDF and FYM. The study revealed that plant growth and yield of potato crop were significantly influenced by levels of sulphur application during both the years. Plant population per plot remained statistically unchanged (non-significant) under the various treatments. Control treatment recorded maximum root length at all the stages of crop growth during both the years (12.50, 12.25, 15.08, 13.56, 16.65 and 14.14 cm, respectively) as compared to other treatments. Application of 100% RDF + FYM @ 25 t/ha gave higher value of fresh root weight/plant at all the stage of crop growth as compare to other treatments during both the years (1.12, 1.25, 2.24, 1.80, 1.97 and 1.66 g/plant, respectively). Potato fresh haulm, tuber and biological yield/plot (12.0 m²) were significantly affected due to different treatments of nutrient application during both the years. Application of 100% RDF + FYM @ 25 t/ha + 30 kg S recorded higher fresh haulm yield (19.56 and 17.54/12.0m²) and treatment 100% RDF NPK + FYM @ 25 t/ha recorded higher fresh tuber yield (43.22 and 45.84 kg/12.0 m²) and biological yield (62.06 and 63.16 kg/12.0 m²⁾ as compare to other treatments during both the years. This treatment was at par with 100% RDF + FYM @ 25 t/ha + 30 kg S during both the years.

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