Abstract:
The research work was carried out for consecutive two years during rabi seasons of 2012 and 2013 to study the effect of micronutrients on yield and quality of onion seed. The experiment was laid out in randomized block design with nine different combinations of micronutrients with three replications. The treatments consist of soil application of three micronutrients and one micronutrient mixture viz., Zn, Fe, B and micronutrient mixture, each in two doses (Zn @ 1 and 2 kg ha-1, Fe @2.5 and 5 kg ha-1, B @ 0.5 and 1 kg ha-1, micronutrient mixture @ 10 and 20 kg ha-1) and no micronutrient as control along with recommended dose of fertilizer. The applications of micronutrients were done as basal along with recommended dose of fertilizer before planting. Results of over the two year of experimentations indicated that soil application of recommended dose of fertilizer (N: P: K: S:: 125:80:100:40 kg ha-1) + Micronutrient Mixture @ 20 kg ha-1 gave better Vegetative and flower characteristics followed by recommended dose of fertilizer +Boron (B) @ 1 kg ha-1. Application of recommended dose of fertilizers along with Boron (B) @ 1 kg ha-1 produced higher seed yield (907.55kg ha-1) followed by recommended dose of fertilizers + Micronutrient Mixture @ 20 kg ha-1 (870.14 kg ha-1). Increased yield in this treatment was due to better umbel and yield attributing characteristics. Application of recommended dose of fertilizers along with Boron (B) @ 1 kg ha-1 was also influenced markedly on seed quality characteristics and economics viz., benefit cost ratio (4.25) than other treatments. Soil application of B (@1kg ha-1) along with recommended dose of fertilizers gave the superiority in all measured parameters than other treatments. |
