Studies on zinc nutrition of basmati rice (Oryza sativa)
| dc.contributor.advisor | Verma, Gayatri | |
| dc.contributor.author | Khushdeep Singh | |
| dc.date.accessioned | 2018-05-14T12:14:06Z | |
| dc.date.available | 2018-05-14T12:14:06Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | The present investigation entitled “Studies on zinc nutrition of basmati rice (Oryza sativa)” was carried out to evaluate effect of different doses of zinc on yield and yield attributes of Basmati rice. A field experiment was conducted at two sites (Zn-deficient and Zn-sufficient) at experimental farm of Regional Research Station, Gurdaspur, Punjab Agricultural University, Ludhiana and another study at farmers’ fields in different villages of Gurdaspur during Kharif 2016. The soil of the experimental farm was silt loam in texture, noncalcareous and alkaline in reaction and the soil at farmers’ fields varied from loam to silt loam in texture and alkaline in reaction. The treatments at two sites (Zn-deficient and Zn-sufficient) comprised of two rice varieties as main plot and seven Zn treatments as sub-plots replicated three times in a split-plot design. In Zn-deficient site (Site-I), a significant increase in grain and straw yield was found with Zn application @ 12.5 kg Zn/ha (T4), 6.25 kg Zn/ha (T3) and 3.12 kg Zn/ha (T2) whereas in Zn sufficient site (Site-II) there was non-significant increase in grain and straw yield with increasing Zn levels. Among the tested varieties, Pusa basmati 1121 recorded significantly higher grain yield in comparison to Punjab basmati 2 in Zn deficient site (Site-I) and non-significant increase was found for varieties in Zn sufficient site (Site-II). Yield attributes showed non-significant increase with increasing Zn levels at both the sites except 1000-grain weight which increased significantly with increasing Zn levels in deficient site. DTPA-Zn showed significant increase in Zn deficient site whereas it was nonsignificant in Zn sufficient site. The Zn content in whole grain, brown rice and straw at both the sites at experimental farm increased significantly with soil applied Zn treatments but maximum Zn content was recorded in treatments which had soil plus foliar Zn application. The amount of Zn extracted by using different extractants in soil samples collected at harvest from different sites at farmers’ field was in the following order: AB-EDTA> Mehlich-3> ABDTPA> DTPA-HCL> 0.1N HCL= DTPA with Zn extraction of 1.14, 0.95, 0.94, 0.73, 0.65 and 0.65 mg kg-1 and critical limit values using Cate & Nelson procedure for these were 0.87, 0.65, 0.69, 0.55, 0.64 and 0.59 mg kg-1, respectively. Different extractants were highly and significantly correlated with each other indicating that they could extract zinc more or less from soil. DTPA-Zn and AB-DTPA-Zn showed the highest correlation (0.966**) while ABDTPA-Zn and DTPA+HCL showed the least (0.755**). Accordingly, DTPA-Zn and ABDTPA-Zn extractant could be used effectively for estimating Zn for Basmati rice grown in Gurdaspur district of Punjab. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810045490 | |
| dc.keywords | Basmati rice, zinc, yield, chemical extractants, critical limit | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 69 | en_US |
| dc.publisher | Punjab Agricultural University, Ludhiana | en_US |
| dc.research.problem | Studies on zinc nutrition of basmati rice (Oryza sativa) | en_US |
| dc.sub | Soil Science | en_US |
| dc.theme | Studies on zinc nutrition of basmati rice (Oryza sativa) | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Studies on zinc nutrition of basmati rice (Oryza sativa) | en_US |
| dc.type | Thesis | en_US |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Khushdeep thesis after viva 22.01.2018.pdf
- Size:
- 527.59 KB
- Format:
- Adobe Portable Document Format
- Description:
- M.Sc.
License bundle
1 - 1 of 1
No Thumbnail Available
- Name:
- license.txt
- Size:
- 1.71 KB
- Format:
- Item-specific license agreed upon to submission
- Description: