NITROGEN MANAGEMENT IN MACHINE TRANSPLANTED RICE

Simple item page
dc.contributor.advisorBharatha Lakshmi, M
dc.contributor.authorJYOTHI SWAROOPA, V
dc.date.accessioned2016-12-05T09:39:34Z
dc.date.available2016-12-05T09:39:34Z
dc.date.issued2014
dc.description.abstractA field experiment entitled “Nitrogen Management in Machine Transplanted Rice” was conducted at Andhra Pradesh Rice Research Institute & Regional Agricultural Research Station – Maruteru during Kharif 2013 under canal irrigation. The experiment was laid out in a split plot design and replicated thrice. The experiment consisted of four main plot treatments viz., 75%RDN, 100% RDN ,150% RDN and 200% RDN and foliar application of 2% KNO3 ,2% DAP and 1% 19-19-19 as sub plot treatments. The experimental soil was sandy clay loam in texture, slightly alkaline in reaction, low in organic carbon (0.43 %), low in available nitrogen (188 kg ha-1), high in available phosphorus (14.4 kg ha-1) and high in available potassium (1254 kg ha-1 ). Plant height was found to be non-significant by different treatments at all stages of crop growth studied. Interaction between nitrogen levels and foliar feeding at Panicle initiation stage was found to be non-significant at all stages of the crop growth. Significantly higher number of tillers m-2 at 60, 90 DAT and at harvest was observed with the application of 150 percent recommended dose of nitrogen except 30 DAT. Significantly higher dry matter accumulation at 30DAT, 60DAT, 90DAT and harvest was recorded with 150 percent recommended dose of nitrogen which was on a par with 200 percent RDN. However, foliar nutrition did not influence the tiller and dry matter production. Among different treatments, yield attributes i.e., productive tillers m-2, total number of grains panicle-1, number of filled grains panicle-1 , panicle weight were significantly influenced by N levels only wherein application of 150 percent recommended dose of nitrogen exerted favourable influence and improved all the yield attributes. Foliar nutrition with different fertilizers at PI stage did not influence the yield attributes significantly.However, the interaction between nitrogen levels & foliar feeding treatments was found to be non-significant. Significantly higher grain and straw yields (6363 kg ha-1 and 9399 kg ha-1 respectively) were recorded with the application of 150 percent RDN while further increase to 200% RDN resulted in significant reduction. Additional nutrition through foliar application of 1% 19-19-19 though not statistically significant, tended to increase grain and straw yield marginally over 2% DAP & 2% KNO3. There were no significant differences between nitrogen levels and foliar nutrition in respect of quality parameters of rice grain such as protein content, milling per cent, hulling per cent, head rice recovery. The maximum N uptake at 30, 60, and at harvest stages of the crop was observed with the nitrogen levels only. The highest uptake was recorded with the 150% recommended dose of nitrogen which was on a par with 200% RDN. Additional nutrition through foliar application at PI stage did not influence N uptake significantly. Higher net returns (Rs.56832 ha -1) and returns per rupee invested (1.5) were registered with the application of 150% recommended dose of nitrogen. Among foliar feeding, foliar application of 1% 19-19-19 resulted in relatively higher net returns (Rs.48292 ha -1) and returns per rupee invested (1.26) than 2% DAP and 2% KNO3. From the present study, it can be concluded that application of 150% recommended dose of nitrogen (135 kg ha-1) is optimum for realizing higher grain yield in machine transplanted rice. Foliar nutrition with different fertilizers once at PI stage did not improve the yield attributes and grain yield significantly in machine transplanted rice.en_US
dc.identifier.citation94p.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/89085
dc.language.isoen_USen_US
dc.publisherACHARYA N.G. RANGA AGRICULTURAL UNIVERSITYen_US
dc.relation.ispartofseriesD5048;
dc.subAgronomyen_US
dc.these.typeM.Sc
dc.titleNITROGEN MANAGEMENT IN MACHINE TRANSPLANTED RICEen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
FINAL.pdf
Size:
1.31 MB
Format:
Adobe Portable Document Format
Description:
NITROGEN MANAGEMENT IN MACHINE TRANSPLANTED RICE
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.28 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses