Effect of organic substances and plant growth regulators on growth of tamarind (Tamarindus indica L.) Seedlings

Abstract

Tamarind (Tamarindus indica L.), or Imli is also called Indian Date. It belongs to the family Leguminaceae. The use of plant growth regulators in proper concentration with scarification may regulate growth behaviour in many fruit crops and pre-sowing treatment of growth regulators could lead to increase seed germination and enhancement of seedling growth. Seed, without use of growth regulators showed poor response for germination and its growth. An experiment was carried out to identify a suitable treatment for getting better seedling growth. In the present study seeds were imposed to twelve different treatments i.e. T0 Control (Soaking in distilled water), T1 GA3 @ 100 ppm, T2 GA3 @ 200 ppm, T3 GA3 @ 300 ppm, T4 NAA @ 100 ppm for 24 hr, T5 NAA @ 200 ppm, T6 NAA @ 300 ppm, T7 Acid Scarification (HCL 10%), T8 Cow urine 5%, T9 Cow Urine 10%, T10 Cow Urine 20%, T11 Cow Dung Slurry for 24hr and in acid 30min in Completely Randomized Design with three replications. The results reveal that among the different treatment combination T2 GA3 @ 200 ppm reported the highest plant growth in respect to days required for Girth of stem, Length of seedling, Root length, Number of roots/seedling, Survival percentage of seedlings were as T3 GA3 @ 300 ppm shows highest result in respect to days required for Number of leaves per seedling and T1 GA3 @ 100 ppm shows highest result for days required for Height of shoot.