Influence of Seed Sizes, Seed Treatments and Mother Plant Nutrition on Plant Growth and Seed Yield of Sweet Corn cv. Priya (Zea mays var. Rugosa)

A field and laboratory experiments were conducted to know the influence of seed sizes and seed treatments on seed yield and quality of sweet corn cv. Priya. Study comprises of 18 treatment combination and replicated thrice. The following are the treatment combinations with two seed sizes viz., small-S₁ (seeds passed through the 5.2 R mm sieve), large-S₂ (seeds retained on the 5.2 R mm sieve), three priming treatments (P₁unprimed, P₂-hydro priming for 24 h and P₃-1% KH₂PO₄ priming) and three fertilizer levels (F₁ 150: 75: 40 kg NPK ha⁻¹ + 10 kg ZnSO₄, F₂ 187.5: 93: 50 kg NPK ha⁻¹+ 12 kg ZnSO₄ and F₃ 225: 112: 60 kg NPK ha⁻¹ + 15 kg ZnSO₄). Large seeds recorded expressively higher values for plant height, days to 50% tasseling, silking, maturity and seed yield compared to small seeds. Significantly yield advantage was also obtained by 1% KH₂PO₄ priming treatment.