Effect of nano fertilizers on the productivity of groundnut (Arachis hypogaea L.)

Abstract:

The present investigation entitled “Effect of Nano Fertilizers on the Productivity of Groundnut (Arachis hypogaea L.)” was conducted at AICRP on Summer Groundnut, MPKV, Rahuri during Summer 2025.The experiment consists of eleven treatments viz, T₁: Absolute Control, T₂: RDF (25:50:00 N: P₂O₅ : K₂O kg ha^-1), T₃: GRDF (25:50:00 N: P₂O₅ : K₂O kg ha^-1 + FYM 10 t ha^-1), T₄ : GRDF + Zinc Sulphate @2 g/lit foliar spray at 25 and 45 DAS, T₅ : GRDF + Nanoscale Zinc Oxide @2 g/15 lit foliar spray at 25 and 45 DAS, T₆: GRDF + Nanoscale Zinc Oxide @2 g/10 lit foliar spray at 25 and 45 DAS, T₇: GRDF + Nanoscale Calcium Oxide @2 g/15 lit foliar spray at 25 and 45 DAS, T₈ : GRDF + Nanoscale Calcium Oxide @2 g/10 lit foliar spray at 25 and 45 DAS, T₉: GRDF + Nano Sulphur @2.5ml/lit foliar spray at 30 and 45 DAS, T₁₀: GRDF + Nano Sulphur @ 5 ml/lit foliar spray at 30 and 45 DAS, T₁₁: GRDF + Gypsum @ 500 kg/ha 50% at basal dose, 50% at pegging stage.The experiment was laid out in randomized block design (RBD) with 3 replications. The soil texture of the experimental site was found to be sandy clay loam. Soil was low in available nitrogen (198.56 kg ha^-1), medium in available phosphorus (17.36 kg ha^-1), high in potassium (327.56 kg ha^-1), moderately high in available sulphur (15.78 mg kg^-1), low in available zinc (0.43 mg kg^-1) and high in available calcium (26.56 cmol kg-¹). The soil was slightly alkaline in reaction (pH 8.19) with normal in electrical conductivity of 0.33 dSm^-1.The results revealed that T₁₁ i.e., GRDF + Gypsum @ 500 kg ha⁻¹ 50% at basal dose and 50% at pegging stage, recorded significantly superior performance with respect to yield attributes and yield. This treatment registered the highest number of pods plant⁻¹ (33.11), pod weight plant⁻¹ (36.24 g), number of filled pods plant⁻¹ (31.50), shelling percentage (70.05%), pod yield (36.58 q ha⁻¹), kernel yield (25.66 q ha⁻¹), haulm yield (48.23 q ha⁻¹) and biological yield (84.81 q ha⁻¹). However, T₁₁ was found to be statistically at par with T₁₀ i.e., GRDF + Nano sulphur foliar spray @ 5 ml l⁻¹ applied at 30 and 45 DAS and T₉ i.e., GRDF + Nano Sulphur foliar spray @ 2.5 ml l⁻¹ applied at 30 and 45 DAS for most of the yield attributes and yield parameters.