National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field experiment entitled was conducted on loamy sand soil, which was low in organic carbon and available nitrogen and medium in available phosphorus and potassium during spring season of 2014 and 2015 at Student's Research Farm, Punjab Agricultural University, Ludhiana. Experiment was laid out in split plot design with four replications with three dates of planting viz. February 10, February 20 and March 2 in main plots and seven foliar applications viz. 1% KNO3 at tassel initiation, 2% KNO3 at tassel initiation, 1% KNO3 at tassel initiation+ another spray after one week, 2% KNO3 at tassel initiation+ another spray after one week, WS at tassel initiation tassel initiation+ another spray after one week and control (no spray) in sub plots. Different planting dates as well as foliar applications of both water and KNO3 had a significant effect on yield and yield attributes of spring maize. The planting of maize on February 20 gave significantly higher grain yield. Various yield attributes (number of cobs per plant, cob length, cob girth, number of rows per cob, number of grains per row, number grains per cob and 100 grain weight) were higher for February 20. Foliar application had significant effect on various yield attributes like number of cobs per plant, cob length, cob girth, number of rows per cob, number of grains per row, number grains per cob and 100 grain weight with 1% KNO3 at tassel initiation gave significantly higher grain yield.
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