Browsing by Author "MAHESH, PAMUKUNTLA"
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ThesisItem Open Access STUDIES ON EFFECT OF PLANT GROWTH REGULATORS ON GROWTH, YIELD AND QUALITY OF POTATO (Solanum tuberosum L.)(Indira Gandhi Krishi Vishwavidyalaya, Raipur, 2018) MAHESH, PAMUKUNTLA; SHARMA, PRAVIN KUMAR; DIXIT, ANIL; JOSHI, P.K.; SAXENA, R.R.Inorder to evaluatetheeffect of the plant growth regulators on growth and yield of the potato cultivar Kufri Pukhraj. Thepresentinvestigationentitled“Studies on effect of plant growth regulators on growth, yield and quality of potato (Solanum tuberosum L.)” was conductedduringRabi 2017-18at Research cum Instructional Farm, College of Agriculture, Raipur, Chhattisgarh.Thesoiloftheexperimentalfieldwas silty clayeyintexture.Thesoilwasneutralinreactionandmediuminfertilitylevelshavingavailablenitrogen,phosphorusandpotassiumcontentwerelow,highandmedium,respectively.Theclimateoftheregionisslightly moist-hot zonewithan annualaveragerainfallof 1326mm. The experiment was carried out with Factorial Randomized Block Design with ten treatment combinations consisting of two methods of application M1 (Seed treatment) and M2 (Spray treatment) and five levels of plant growth regulators viz., T1 (Plain water), T2 (GA3- 25 ppm), T3 (GA3-50 ppm), T4 (IBA- 100 ppm), and T5 (IBA-200 ppm) were replicated three times. The method of PGR application significantly influenced on emergence percentage, compound leaves, fresh weight of shoots per plant, dry weight of shoots per plant, marketable and unmarketable tuber yield.The application of PGR through spray treatment method found superior for marketable and total tuber yield of potato (31.57 t/ha and 34.34 t/ha, respectively.) PGR application affected the plant growth and yield significantly it was observed that emergence percentage, fresh weight of shoots, dry weight of shoots, marketable tuber yield and, total tuber yield was found superior by PGR application. Out of five treatments, total tuber yield was significantly higher with T5 (IBA-200 ppm) (32.09 t/ha). The method of PGR application non-significantly differentiate plant emergence and plant height. The interaction effect of these two components recorded significant higher plant emergence percentage under M1 T2 (97.88%), grade wise maximum tuber yield found that 25-50 g tuber yield with M2T3 of 3.58 kg/plot (9.05 t/ha), 50-75 g tuber yield with M2T5 of 5.37 kg/plot (13.56 t/ha), and >75 g tuber yield M2T3 of 4.34 kg/plot (6.28 t/ha). However, maximum total tuber yield was recorded with M2T5 that is (34.34 t/ha).