INTEGRATION OF PRE AND POST-EMERGENCE HERBICIDES AND CULTURAL PRACTICES FOR WEED MANAGEMENT IN SUNFLOWER (Helianthus annuus L.)
| dc.contributor.advisor | Geetha, K. N | |
| dc.contributor.author | ROHINI, N. METI | |
| dc.date.accessioned | 2017-08-02T04:16:21Z | |
| dc.date.available | 2017-08-02T04:16:21Z | |
| dc.date.issued | 2015-07-10 | |
| dc.description.abstract | A field experiment was conducted during Kharif 2014 at AICRP on sunflower, ZARS, UAS, Bengaluru. The experiment consisted of nine treatments laid out in randomized block design. In this experiment one pre-emergence, four post-emergence herbicides and farmers practice i. e., two IC at 20 and 40 DAS + one HW at 30 DAS, which was compared with three hand weedings at 15, 30 and 45 DAS and unweeded check. Among the different weed management practices, application of pendimethalin at 1.0 kg a. i. ha-1 as PE + quizalofop-ethyl 10 EC at 37.5 g a. i. ha-1 at 17 DAS as directed POE on weeds recorded significantly higher seed and oil yield (1797 and 675 kg ha-1, respectively) which was found to be on par with weed free (1824 and 697.4 kg ha-1, respectively) and farmers practice (1888 and 726.4 kg ha-1, respectively). These treatments registered lower weed density and dry weight at harvest (11.13, 7.56 and 9.57 no. m-2 and 10.00, 7.39 and 5.51 g m-2, respectively). The yield components: seed yield capitulum-1 (30.33, 30.93 and 34.33 g), capitulum diameter (17.40, 18.00 and 18.60 cm) and hundred seeds weight (4.42, 4.56 and 4.78 g) were significantly higher with the same treatments. Though highest net returns (` 35,092 ha-1) was recorded in farmers practice, highest MR:MC (10.75) and B:C ratio (2.73) were recorded in pendimethalin at 1.0 kg a. i. ha-1 as PE + quizalofop-ethyl 10 EC at 37.5 g a. i. ha-1 at 17 DAS as directed POE on weeds. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810027031 | |
| dc.language.iso | en | en_US |
| dc.pages | 150 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Agronomy | en_US |
| dc.subject | null | en_US |
| dc.theme | INTEGRATION OF PRE AND POST-EMERGENCE HERBICIDES | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | INTEGRATION OF PRE AND POST-EMERGENCE HERBICIDES AND CULTURAL PRACTICES FOR WEED MANAGEMENT IN SUNFLOWER (Helianthus annuus L.) | en_US |
| dc.type | Thesis | en_US |