Growth and Yield of Sunflower as Influenced by Different Spacing, Organic and Inorganic Fertilizer Levels

An experiment was conducted to study the effect of spacings, organic and inorganic fertilizer levels on growth and yield of sunflower. The treatments include 2 organic levels (M₁-No organics, M₂-Compost @ 5 t ha⁻¹), 3 spacings (P₁-60cm x 30cm, P₂-60cm x 45cm, P₃-60cm x 22.5cm and 3 fertilizer levels (F₁100% NPK (90: 45: 45 kg ha⁻¹) + S +ZnSO₄, F₂125% NPK+ S +ZnSO₄, F₃-133% NPK+ S +ZnSO₄). The results indicated that application of Compost @ 5 t ha⁻¹ with spacing 60cm x 30cm andfertilizer level of 133% NPK+ S +ZnSO₄ was found significantly superior in case of no of filled seeds plant⁻¹, seed yield ha⁻¹ and net monetary returns ha⁻¹ of sunflower. Similarly, oil yield ha⁻¹ were recorded significantly superior under the treatment Compost @ 5 t ha⁻¹ with spacing 60cm x 30cm and fertilizer level of 133% NPK+ S +ZnSO₄).