Studeis on Persistence and Degradation of Propineb and Its Effect on Zinc Content in Rice
| dc.contributor.advisor | Prakash, N B | |
| dc.contributor.author | CHAKPRAM, BIRENDRAJIT | |
| dc.date.accessioned | 2017-03-16T05:10:30Z | |
| dc.date.available | 2017-03-16T05:10:30Z | |
| dc.date.issued | 2008-02 | |
| dc.description.abstract | A laboratory and two field experiments were conducted in order to determine the persistence and degradation of propineb in soils, rice and its effect on zinc content in rice. Persistence of Propineb was studied in Shimoga and Mandya soils at the application rate of 10 and 25 pg g"1. The degradation pattern of Propineb in soils followed the first order reaction kinetics and was faster in initial period of incubation and later slower degradation. Degradation of Propineb was faster under field capacity moisture regimes than submergence. Higher persistence of Propineb was noticed in Shimoga soil than Mandya soil at both the application rates and moisture regimes. The half life values ranged from 5.2 to 5.3 days in Mandya soil and from 6 to 9.6 days in Shimoga soil following application at 10 and 25 pg g"1 under field capacity. It ranged from 6.7 to 7.7 days and 10 to 12.1 days in Mandya and Shimoga soil under submerged moisture regimes. Propineb residues dissipated faster in rice when applied at 700 and 1400 g a.i. ha-1on 20 or 30 days after transplanting. Dissipation was faster at lower dose than higher dose of application. The rate of degradation of propineb residues was higher when applied at 30 days after transplanting (DAT) as compared to 20 DAT. The half-life values varied according to the difference in time of application irrespective of rate of application. Half-life values of propineb when applied at 20 DAT ranged from 1.96 to 2.29 days and from 1.25 to 1.59 days when applied at 30 DAT. There was a significant increase in grain and straw yield over control in the application of zinc based fungicide and fertilizers. Although no significant difference in zinc content was observed, there was a significant difference in zinc uptake by grain and straw among different treatments. | en_US |
| dc.identifier.other | TH-9063 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810004998 | |
| dc.language.iso | en | en_US |
| dc.pages | 133 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Soil Science and Agriculture Chemistry | en_US |
| dc.subject | null | en_US |
| dc.theme | Studeis on Persistence and Degradation | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Studeis on Persistence and Degradation of Propineb and Its Effect on Zinc Content in Rice | en_US |
| dc.type | Thesis | en_US |