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http://krishi.icar.gov.in/jspui/handle/123456789/32913| Title: | Statistical evaluation and optimization of fertilizer requirement of upland rice (Oryza sativa) genotypes at varying levels of crop seasonal rainfall under moist subhumid alfisols. |
| Other Titles: | Statistical evaluation and optimization of fertilizer requirement of upland rice (Oryza sativa) genotypes at varying levels of crop seasonal rainfall under moist subhumid alfisols. |
| Authors: | ICAR_CRIDA |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR_CRIDA |
| Published/ Complete Date: | 2008 |
| Project Code: | Not Available |
| Keywords: | varieties, varying, fertilizer ,levels. |
| Publisher: | Maruthi Sankar, G.R |
| Citation: | Not Available |
| Series/Report no.: | Not Available; |
| Abstract/Description: | A study was conducted during rainy season (kharif 2003-05) at Phulbani using experimental data on the response of rice (Oryza sativa L.) varieties to varying fertilizer levels under moist sub-humid Alfisols. Statistical models were developed for yield prediction and fertilizer optimization at varying crop seasonal rainfall. Eight genotypes, viz 'Vandana', 'ZHU-11-26', 'RR-361-1', 'Jaldi-6', 'RR-166-645', 'RR-348-6', 'Heera' and 'Saria' genotypes were tested with an application of 60-30-30, 40-20-20, 20-10-10 kg N-P(2)O(5)-K(2)O/ha and a control. The genotypes attained a mean yield of 1651 kg/ha with 13% variation in 3 seasons. 'Vandana' was superior in control and 20-10-10 kg/ha, compared with the 'RR-348-6' in 40-20-20 kg/ha and 'RR-166-645' in 60-30-30 NPK kg/ha. Rank correlation between ranks assigned to mean and variation of genotypes shows that the performance of a genotype was significantly correlated with its variation with a maximum correlation of 0.79 in control and a minimum of 0.43 in 60-30-30 kg/ha. Regression models of yield through rainfall, applied fertilizer and their interaction indicated a significant predictability ranging from 0.92 for 'Vandana', 'ZHU-11-26' and 'Jaldi-6' to 0.97 for 'RR-361-1', 'RR-166-645' and 'Saria'. Rainfall had a significant positive influence on yield of all genotypes while quadratic variables of N, P and K had a significant negative influence on 'Vandana' and 'Saria'. Optimum NPK doses for attaining maximum yield were minimum for 'Saria' and maximum for 'ZHU-11-26'. For economic yield they were minimum for 'Saria' while N was maximum for 'Vandana' and K was maximum for 'ZHU-11-26'. P was maximum for 'RR-166-645' at 750 and 1000 mm and 'ZHU-11-26' at 1250 mm of rainfall. Optimum N ranged from 35 to 77 kg/ha while, P and K ranged from 16 to 67 kg/ha for maximum yield at a crop seasonal rainfall of 750 to 1250 mm. The optimum doses for economic yield ranged from 32 to 69 kg/ha for N, 15 to 56 kg/ha. for P and 16 to 62 kg/ha for K in the study. |
| Description: | Not Available |
| ISSN: | Not Available |
| Type(s) of content: | Technical Report |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Indian Journal of Agricultural Sciences |
| NAAS Rating: | 6.21 |
| Volume No.: | 78(3) |
| Page Number: | 18 – 23. |
| Name of the Division/Regional Station: | Not Available |
| Source, DOI or any other URL: | Not Available |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/32913 |
| Appears in Collections: | NRM-CRIDA-Publication |
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