Bio-Efficacy of Early Post-Emergent Herbicides in Irrigated Maize (Zea mays L.)
| dc.contributor.advisor | Wali, S.Y. | |
| dc.contributor.author | Arakeri, Soumya G. | |
| dc.date.accessioned | 2023-10-09T14:45:44Z | |
| dc.date.available | 2023-10-09T14:45:44Z | |
| dc.date.issued | 2018-06 | |
| dc.description.abstract | A field experiment to evaluate Bio-efficacy of early post-emergent herbicides in irrigated maize was conducted at farmer’s field of Nagathan village, Vijayapura (Karnataka) during kharif, 2016. The experiment was laid out in randomised block design replicated thrice with 13 treatments which includes pre-emergent application of Atrazine (0.50 kg ha-1), post-emergent herbicide 2,4-D sodium salt (0.50 kg ha-1) and early post-emergent herbicides applied at 2-3 leaf stage of weeds both single and tank mix. The treatments T1, T2 and T3 were Tembotrione applied at (75, 100 and 125 g ha-1, respectively), and T4, T5 and T6 are tank mix application of herbicides i.e. Tembotrione + Atrazine. Treatment T7, T8 and T9 are application of Tembotrione + 2,4-D sodium salt . The results of investigation revealed that (T6) Tembotrione applied @ 125 g ha-1 + Atrazine 50 % WP @ 0.50 kg ha-1 have shown lower weed density (6.00 m-2) and weed dry weight (5.10 m-2) at 30 DAS. Total dry matter production was also higher (5.39 g plant-1) compared to rest of the treatments except (T13) weed free check (5.82 g plant-1) and (T10) recommended package of practice i.e. Atrazine 1.00 kg ha-1 + IC + HW (5.58 g plant-1). Grain weight per plant (36.13 g plant-1), grain yield (6,215 kg ha- 1) and stover yield (7,167 kg ha-1) were also significantly higher. The net returns and benefit cost ratio were significantly higher ( 59,623 ha-1 and 2.77, respectively) compared to rest of the treatments. The above results concluded that (T6) Tembotrione applied @ 125 g ha-1 + Atrazine 50 % WP @ 0.50 kg ha-1 has given lower weed density, weed dry weight. And also recorded higher grain and stover yield. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810198595 | |
| dc.language.iso | English | |
| dc.pages | 91 | |
| dc.publisher | University of Agricultural Sciences, Dharwad | |
| dc.research.problem | Bio-Efficacy of Early Post-Emergent Herbicides in Irrigated Maize (Zea mays L.) | |
| dc.sub | Agronomy | |
| dc.theme | Bio-Efficacy of Early Post-Emergent Herbicides in Irrigated Maize (Zea mays L.) | |
| dc.these.type | M.Sc | |
| dc.title | Bio-Efficacy of Early Post-Emergent Herbicides in Irrigated Maize (Zea mays L.) | |
| dc.type | Thesis |