Author(s):

Vani NU, Dr. A Bhagwan, Dr. A Kiran Kumar, Dr. M Sreedhar, Sharath SR and Suma B

Abstract: The study was conducted on the effects of plant growth regulators (SA@100ppm, GA₃@100ppm, NAA@200ppm) and micronutrients (ZnSO₄ + Boric acid, ZnSO₄ + Boric acid + CuSO₄, ZnSO₄ + Boric acid +MgSO₄, ZnSO₄ + Boric acid + CuSO₄ + MgSO₄ each at 0.4%) on yield and economics in fifteen year old guava cv. L-49 under randomized block design with factorial concept at FRS, Sangareddy, SKLTSHU, Telangana. In interaction effects, NAA@200ppm and ZnSO₄ @ 0.4% + Boric acid @ 0.4% + CuSO₄ @0.4% + MgSO₄ @0.4% has recorded significantly maximum fruit yield per tree (116.92kg/tree), yield per hectare (46.77t/ha), fruit weight (187.07g), However, Maximum fruit length (7.69cm) and fruit diameter (7.53cm) were observed with GA₃@100ppm and ZnSO₄ @ 0.4% + Boric acid @ 0.4% + CuSO₄@0.4% + MgSO₄ @0.4%. Maximum B:C ratio (5.07) was recorded in NAA@200ppm and ZnSO₄ @ 0.4% + Boric acid @ 0.4% + MgSO₄ @0.4%. NAA@200ppm and ZnSO₄ @ 0.4% + Boric acid @ 0.4% + CuSO₄ @0.4% + MgSO₄ @0.4% was superior in improving the yield and economics of guava cv. Lucknow-49.

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