Vol. 6, Issue 5 (2018)
Weed management options in spring sweet corn (Zea mays L. saccharata)
Author(s): Prithwiraj Dey, Tej Pratap, VP Singh, Rohitashav Singh and SP Singh
Abstract: A field experiment was conducted with objectives to study the bio efficacy of new generation herbicides against complex weed flora, to study the effects of different cultural and chemical control measures alone and their combinations on weeds, crop growth and yield and to find out the best method of weed management in spring sweet corn on the basis of crop yield and economic parameters. Pre-emergence application of atrazine 1000 g ha-1 followed by (fb) post-emergence application of halosulfuron-methyl 90 g ha-1 was the most effective in reducing the weed density and twice hand weeding at 20 and 40 DAS was found most effective in reducing weed dry matter accumulation as compared to other treatments. All the weed control treatments significantly influenced the yield and yield attributing characters. The highest green cob yield was obtained with twice hand weeding at 20 and 40 DAS (15.46 t ha-1) which was at par with pre-emergence application of atrazine 1000 g ha-1 fb post-emergence application of tembotrione 120 g ha-1 (15.31 t ha-1) among the weed control treatments. The highest net return and B:C ratio was recoded with pre-emergence application of atrazine 1000 g ha-1 fb post-emergence application of tembotrione 120 g ha-1 which was followed by twice hand weeding at 20 and 40 DAS. Pre-emergence application of atrazine 1000 g ha-1 fb tembotrione 120 g ha-1 was found best among the herbicidal treatments in all respect. Twice hand weeding at 20 and 40 DAS was found comparable with pre-emergence application of atrazine 1000 g ha-1 fb post-emergence application of tembotrione 120 g ha-1 and can be used as an alternative subjected to availability of labourers.
Pages: 647-650 | 4399 Views 88 Downloads
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How to cite this article:
Prithwiraj Dey, Tej Pratap, VP Singh, Rohitashav Singh, SP Singh. Weed management options in spring sweet corn (Zea mays L. saccharata). Int J Chem Stud 2018;6(5):647-650.
