| Abstrakt: |
An experiment was conducted in Zonal Agricultural research station, V. C. Farm, Mandya during summer 2021 in direct sown finger millet (Eleusine coracana L.). The experiment consisted of ten treatments, which was laid with Randomized complete block design replicated thrice. The treatments included two pre-emergence herbicides (T1- Pendimethalin 30 EC @ 500 g a.i. ha-1 and T2- Bensulfuron methyl + Pretilachlor 6.6 per cent G @ 165 g a.i. ha-1), two post emergence herbicides (T3- Metsulfuron methyl + Chlorimuronethyl 20WP @ 20 g a.i. ha-1 and T4 - 2, 4-D Na salt 80 WP @ 1000 g a.i.ha-1), four sequential application of pre followed by post emergence herbicides (T5- Pendimethalin 30 EC @ 500 g a.i. ha-1 followed by Metsulfuron methyl + Chlorimuronethy l 20WP 20 g a.i. ha-1, T6- Pendimethalin 30 EC @ 500 g a.i. ha-1 followed by 2, 4-D Na salt 80 WP @ 1000 g a.i.ha-1, T7- Bensulfuron methyl + Pretilachlor 6.6 per cent G @ 165 g a.i. ha-1 followed by Metsulfuron methyl + Chlorimuron ethyl 20WP @ 20 g a.i. ha-1 and T8- Bensulfuron methyl + Pretilachlor 6.6 per cent G @ 165 g a.i. ha-1 followed by 2, 4-D Na salt 80 WP @ 1000 g a.i. ha-1), weed free (T9- Two intercultivations at 20 and 40 DAS with one hand weeding at 30 DAS) and weedy check (T10- Unweeded control). The treatment with two intercultivations and one hand weeding treatment recorded significantly higher grain and straw yield of finger millet (3520 kg ha-1 and 4825 kg ha-1, respectively). On par grain yield (3476 kg ha-1) and straw yield (4722 kg ha-1) were obtained by sequential application of Pendimethalin 30 EC @ 500 g a.i. ha-1 (3 DAS) as pre-emergence herbicide followed by post emergence application of Metsulfuron methyl + Chlorimuronethyl 20WP @ 20 g a.i.ha-1 (20 DAS) which was on par with that of Pendimethalin 30 EC @ 500 g a.i. ha-1 (3 DAS) followed by 2, 4-D Na salt 80 WP @ 1000 g a.i.ha-1 (20 DAS) (3453 kg ha-1 and 4582 kg ha-1). Higher net returns of Rs.48132 ha 1 and B:C ratio (2.26) was obtained with sequential application of Pendimethalin 30 EC @ 500 g a.i. ha-1 (3 DAS) followed by 2, 4-D Na salt 80WP @ 1000 g a.i.ha-1 (20 DAS). Based on the current study, it is clear that sequential application of Pendimethalin 30 EC @ 500 g a.i. ha-1 (3 DAS) as pre-emergence herbicide followed by post emergence application of 2, 4-D Na salt 80WP @ 1000 g a.i.ha-1 (20 DAS) in direct sown finger millet in areas of labour scarcity is an effective weed management strategy to minimize the losses caused by weeds and to enhance the productivity of finger millet. [ABSTRACT FROM AUTHOR] |
