Differential Response Of Rice Cultivators to Potash Application In The Rice Soil Of Onattukara (Record no. 26137)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03326nam a2200181Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20220824144231.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 140128s9999 xx 000 0 und d |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 631.4 |
| Item number | SHA/DI |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Shaji KV |
| 245 ## - TITLE STATEMENT | |
| Title | Differential Response Of Rice Cultivators to Potash Application In The Rice Soil Of Onattukara |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Vellayani |
| Name of publisher, distributor, etc. | Department of Soil Science and Agricultural Chemistry, College of Agriculture |
| Date of publication, distribution, etc. | 1996 |
| 502 ## - DISSERTATION NOTE | |
| Degree type | MSc |
| Year degree granted | 1996 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | It is known that there exists varietal differences in tolerance to nutrient deficiency conditions among rice cultivars. The sandy soils of Onattukara region is inherently deficient in K which resulted in a higher POP recommendation for rice in terms of K application. So to exploit the varietal differences of rice in deficiency tolerance of K, a field experiment was undertaken to screen 48 rice cultivars belonging to tall indicas and dwarf high yielding groups of varying growth durations. The experiment was laid in 384 microplots in "Group Balanced. Block in Split Plot Design" with four K levels and two replications. The various growth and yield attributes and yield were studied with a view to locate varieties which could produce similar yields even at lower levels of K. The results indicated that in general the varietal influences on most of the growth characters in all the four groups were profound. Moreover positive and significant effect of K doses were observed. However LAI showed no variation with differing levels of K. Differential response of varieties to varying K doses as manifested by root spread was considerable only in medium duration varieties while an appreciable difference was noticed in the root spread in all the groups. Root length, thin root-thick root ratio and root CEC appeared to be varietal characters which increased with increasing levels of K. The plant nitrogen content at varying levels of K was more of a varietal character. On the contrary, long duration varieties exhibited significant variation in P content with differing K levels at all critical stages of crop growth. Both K levels and genetic variability of the varieties were equally important in deciding the K content in plants and the response to added K was of a higher magnitude. All but long duration varieties responded positively and significantly to K in terms of productive tiller formation and generally tall indicas produced relatively longer panicles than dwarf varieties. Higher levels of K also led to the production of heavier grains. Yield increases over control was comparatively higher in tall short duration varieties than. any other varieties for higher levels of K. Differential response of K was highly pronounced in tall short duration varieties with Ptb23, Ptb29, Cul 7005-6-1, Cul 7004-3-1, and Cul 7006-2-1 giving comparable yields at 22.5 kg K20 ha-1 as that of the POP recommendation. However as this experiment was done in microplots the final recommendation of varieties tolerant to K deficiency could be done only after extensive studies in large plots and in farmers' fields during various seasons. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rajendran P (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://krishikosh.egranth.ac.in/handle/1/5810084659 |
| 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 | 631.4 SHA/DI | 171184 | 2014-03-18 | 2014-03-18 | Theses |