Studies on rice root-knot nematode, meloidogyne graminicola golden and birchfield, 1965 with emphasis on its management in rice nursery
| dc.contributor.advisor | Kanwar, R.S. | |
| dc.contributor.author | Matcha, Udaya Kumar | |
| dc.date.accessioned | 2018-10-29T04:50:19Z | |
| dc.date.available | 2018-10-29T04:50:19Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | Survey of rice nurseries for M. graminicola in Ambala, Kaithal, Karnal, Kurukshetra, Panchkula and Yamunanagar districts of Haryana showed that 55.0% samples in in situ and 80.0 % samples after bioassay were infected with rice root-knot nematode. Nematode infestation was more in sandy loam than loamy sand and loam soils. In the experiment on the effect of M. graminicola on absorption and translocation of nutrients from the soil, at all three levels of 0, 2, and 4 J2/g soil, maximum plant growth parameters were observed in the treatment with all nutrients (shoot weight 2.4 g, root weight 2.2 g and shoot length 21.9 cm) and minimum in treatment where no nutrient was applied (shoot weight 1.3 g, root weight 1.0 g and shoot length 15.1 cm). Nematode population per plant was more (2650.0) in treatment where no nutrients were applied and minimum in potassium treatment (1895.6). The nutrient content of N, P, K, Zn, Fe and Cu were more in soil, in their respective treatments where the individual nutrients were applied alone. The data on uptake of nutrients in rice seedlings revealed the maximum uptake of nutrients (N 23.0%, P 12.7 %, K 19.4 %, Zn 14.3 ppm, Fe 20.5 ppm, and Cu 6.0 ppm) in rice seedlings was recorded in control (0 J2/g soil). Among the treatments maximum nutrients uptake was observed in treatment where all nutrients were applied in soil (N 15.1 %, P 11.7 %, K 14.9 %, Zn 13.6 ppm, Fe 21.0 ppm and Cu 4.1 ppm). Amount of nutrients was more in soil at 4 J2/g soil (N 151.5 mg, P 33.7 mg, K 125.2 mg, Zn 37.5 ppm, Fe 78.2 ppm, and Cu 20.4 ppm per kg soil) than 2J2/g soil (N 140.0 mg, P 32.9 mg, K 123.7 mg, Zn 31.5 ppm, Fe 74.5 ppm, and Cu 19.4 ppm per kg soil). Among five bacterial isolates evaluated for nematoxicity, Bacillus strain (RKB-91) showed best results on nematode mortality as well as in inhibiting egg hatching at S/2 concentration in both cell cultures and cell free culture filterates. This strain also suppressed the nematode population as well as promoted plant growth. Among neem, cabbage and cauliflower, neem showed best results in terms of nematode mortality at 100 % concentration and > 50% hatching inhibition at 1:10 dilution. It reduced the nematode population and improved plant growth in pots. In vitro results on synthetic chemicals showed that the Coumarin carbamate series, Coumarin I and Coumarin III gave > 50% on mortality of nematode as well as hatching supression at 1000 and 500 ppm concentration. In planta study revealed that Coumarin carbamate III and Coumarin Carbamate V were more effective in reducing the nematode population and improving plant growth. Integration of different treatments for the management of M. graminicola in rice nursery showed that application of Bacillus sp. (RKB-91) + Neem extract + Coumarin carbamate III ranked first in reducing the galls as well as the nematode population and also in improving the plant growth. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810082430 | |
| dc.keywords | Meloidogyne graminicola, Rice, Survey, Nutrient uptake, Management, Rice nursery | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | CCSHAU | en_US |
| dc.sub | Nematology | en_US |
| dc.subject | null | en_US |
| dc.theme | Studies on rice root-knot nematode, meloidogyne graminicola golden and birchfield, 1965 with emphasis on its management in rice nursery | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | Studies on rice root-knot nematode, meloidogyne graminicola golden and birchfield, 1965 with emphasis on its management in rice nursery | en_US |
| dc.type | Thesis | en_US |