Vol. 12, Issue 4 (2023)

Author(s):
Ranjitha Bai H, Raje Gowda, Manjunath Gowda, Ramakrishna Naika, GG Kadalli and Arunkumar BR

Abstract:
A field experiment was conducted during 2022, at Krishi Vigyan Kendra, Hassan, to know the effect of biochar and Farm Yard Manure (FYM) on soil properties. The experiment was planned in Randomized Complete Block Design (RCBD) with 10 treatments T₁: Absolute Control (without biochar and FYM), T₂: 100 per cent NPK, T₃: FYM @ 20 t ha^-1y^-1, T₄: 100 per cent NPK + FYM@ 20 t ha^-1 (Package of practice), T₅: 100 per cent NPK+ FYM@ 10 t ha^-1 + Biochar @ 5 t ha^-1y^-1, T₆: 100 per cent NPK+ FYM@ 10 t ha^-1 + Biochar @ 10 t ha^-1y^-1, T₇: 100 per cent NPK+ FYM@ 10 t ha^-1 + Biochar @ 15 t ha^-1y^-1 and T₈: 75 per cent NPK+ FYM@ 10 t ha^-1 + Biochar @ 5 t ha^-1y^-1, T₉: 75 per cent NPK+ FYM@ 10 t ha^-1 + Biochar @ 10 t ha^-1y^-1, T¹⁰: 75 per cent NPK+ FYM@ 10 t ha^-1 +Biochar @ 15 t ha^-1y^-1 replicated trice. The result revealed that combined application of 100 per cent recommended NPK+ FYM@ 10 t ha^-1 + Biochar @ 15 t ha^-1y^-1 to soil significantly increased the Maximum water holding capacity (49.34 %), as compared to initial soil properties of experimental site. Significantly increased the soil pH (initial acidic (5.89) to neutral at harvest (6.87), Electrical Conductivity (EC) (0.23 dS m^-1), available nitrogen (361.17 kg ha^-1), available phosphorus (52.23 kg ha^-1), available potassium (299.39 kg ha^-1), exchangeable Ca [4.53 c mol (p+) kg^-1] and Mg [2.49 c mol (p+) kg^-1] available sulphur (15.89 mg kg^-1) and Diethylene triaminepenta acetic acid (DTPA) extractable micronutrients (Fe, Zn, Mn and Cu)compared to absolute control and package of practice treatments.