Current Advances in Agricultural Sciences(An International Journal)

Effect of foliar application of bio-regulators, viz. TIBA (2, 3, 5-triiodobenzoic acid, 25 mg and 50 mg l⁻¹), IAA (indole acetic acid, 25 mg and 50 mg l⁻¹), Kintein (5 mg and 10 mg l⁻¹), and NAA (naphthalene acetic acid, 25 mg and 50 mg l⁻¹) was studied on flower drop, growth and yield of pigeonpea variety ‘UPAS-120’ for two consecutive kharif seasons of 2005 and 2006 at Kanpur, Uttar Pradesh. Spraying of TIBA (50 mg l⁻¹) increased flowering, number of pods plant⁻¹, number of seeds pod⁻¹ and 1000-seed weight during both the seasons. It also increased seed yield and harvest index of pigeonpea by 20.9% and 25.0% over control, respectively.