COMPARATIVE STUDY OF HERBICIDAL EFFECT ON VEGETATIVE GROWTH AND PHENOLOGY OF EARLY SEASON MAIZE.....

The growth performance of maize (Zea mays) when treated to chemical weed control was investigated in the field. 2, 4-D (Bextra and Calliherbe), glyphosate (Kalach 360SL, Fire and Weed Out), Atrazine (Callitraz 500SC and Trazine 500SC), and paraquat (Gramoxone Super and Benaxone) were among the herbicides utilised. Each of the herbicides listed served as a treatment, with manual weeding serving as the control. There were ten herbicide treatments in total, with four replications in each. A randomised complete block design was used to order the treatments. Treatments with paraquat and glyphosate were sprayed before sowing, while atrazine and 2, 4-D were applied two days later. As a side dressing 2 WAP, the compound fertiliser 15-15-15 (N-P-K) was sprayed at a rate of 250 kg/ha. 6 WAP, a top dressing of ammonium sulphate at a rate of 125kg/ha was applied. The statistical tool Genstat 10 was used to do analysis of variance (ANOVA) and correlation. The Least Significant Difference was used to estimate significant differences between means at a 5% level of significance. The herbicides contributed considerably to maize growth by providing adequate weed control and so reducing the competition presented by fast growing weeds, according to an analysis of their effect on maize. However, auxin-type herbicides may inhibit root growth during the juvenile stage of growth, resulting in sclerophylly-induced high density tissue development that fades with time. When maize plants were treated with herbicides, they increased their overall leaf area at the expense of biomass absorption efficiency per unit leaf area.

Please see the link :- https://www.ikprress.org/index.php/JOGAE/article/view/2380