Evaluate the response of different levels of zinc, iron and organic manure on yield attributing parameters of hybrid maize (Zea mays L.)

A field experiment was conducted on student instructional farm (SIF) of Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, U.P. during kharif season 2019 and 2020, the present experiment having 32 treatments replicated thrice in factorial randomized block design on same laid out at same location. Hybrid maize variety Pioneer 3377 was sown at 60 × 20 cm (row×plant) during both the years, Soil application of Zinc (5.0 kg) and Iron (10 kg) along with 2.5 tonne vermicompost ha-1 gave maximum increase in yield attributing characterstics viz. cob length (19.25cm & 19.80 cm), cob girth (13.60cm & 13.95 cm), number of grain row cob-1 (17 & 17), number of grain row-1 (33 & 35), test weight (24.10 gm & 24.30 gm) in comparison to all the treatments during 2019 and 2020.