Effct of Sowing Date and Humic Acid Foliar Application on Yield and Yield Components of Canola Cultivars

Abstract

In order to investigate the effcts of diffrent sowing dates and humic acid foliar application on some agronomic traitsof six canola cultivars a two-year experiment was carried out in 2015 and 2016 growing seasons. The experimentswere laid out in a randomized complete block design arranged in factorial split plot with three replicates. The factorialcombination of three sowing dates (7th, 17th and 27th October) and two humic acid levels (0 and 0.2%) were allocatedto the main plots and six canola cultivars (HW118, WPN6, HL3721, L14, Tassilo and Natali) were randomized in subplots. The results indicated that the main effcts of experimental factors were signifiant on all studied traits, except forharvest index. Interaction between sowing date and cultivar was also signifiant on all traits except for branch numberand harvest index. In general, early seed sowing caused the highest yield and yield component as well as oil percentageand yield. Similarly, humic acid foliar application could increase agronomic traits in canola cultivars. In sum, early seedsowing and humic acid foliar application are highly recommended in canola production.