Effect of time of sowing and weed management on the performance of dry sown rainfed rice (Record no. 25419)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02724nam a2200193Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20220209170528.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 140128s9999 xx 000 0 und d |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 630 |
| Item number | JAC/EF |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Jacob John |
| 245 ## - TITLE STATEMENT | |
| Title | Effect of time of sowing and weed management on the performance of dry sown rainfed rice |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Vellayani |
| Name of publisher, distributor, etc. | Department of Agronomy, College of Agriculture |
| Date of publication, distribution, etc. | 1993 |
| 502 ## - DISSERTATION NOTE | |
| Degree type | MSc |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | An experiment was conducted at the College of Agriculture, Vellayani during the first crop season of 1992 to study the effect of time of sowing and weed management on the performance of dry sown rainfed rice using Onam variety. Split plot experiment in randomised block design with time of sowing as major treatments and weed management as minor treatments was adopted and the treatments replicated thrice. May 16, May 23 and May 30 were the first, second the third dates of sowing respectively. The weed management treatments included combination of butachlor with 2, 4-D, butachlor with hand weeding, hand weeding twice 20 and 40 DAS, complete weed free and un weeded control. Sowing on May 23 resulted in greater plant height, panicle weight, grain and straw yield, nutrient uptake, grain protein and lesser uptake of phosphorus and potash by weeds when compared to May 16 and May 30. The second best sowing date was May 16. When compared to un weeded control, hand weeding twice, combination of butachlor with hand weeding and butchlor with 2, 4-D gave higher plant height, tiller number, productive tiller number, panicle weight, thousand grain weight, grain yield, straw yield, nutrient uptake and grain protein out of which hand weeding was the best. Hand weeding also resulted in the lowest weed population, weed dry weight, nutrient uptake by weeds, weed index and the highest weed control efficiency. Initially, butachlor alone was ineffective in reducing weed population and its dry weight. However, the combination of butachlor with 2,4-D and butachlor with hand weeding was effective in later stages. The combination of butachlor with hand weeding resulted in higher weed control efficiency than butachlor with 2,4-D. The rice grains contained no applied weedicide residues. Hand weeding, combination of butachlor with hand weeding and butachlor with 2,4-D resulted in greater profit and benefit – cost ratio than un weeded control. However, the highest profit was obtained with hand weeding twice. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Thomas Alexander V(Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/handle/1/5810150547 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810150547&fileid=b63ff3a8-d128-41c1-8e5a-c82aaa5d3d05 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Koha item type | Theses |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2014-03-18 | 630 JAC/EF | 170464 | 2014-03-18 | 2014-03-18 | Theses |