Diagnosis and recommendation integrated system 1. Formulation of DRIS norms for Hevea brasiliensis (Record no. 57149)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01541nam a2200217Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Joseph M |
| 245 #0 - TITLE STATEMENT | |
| Title | Diagnosis and recommendation integrated system 1. Formulation of DRIS norms for Hevea brasiliensis |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | Indian Journal of Natural Rubber Research |
| Year of publication | 1993 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 111-116 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | The diagnosis and recommendation Integrated System (DRIS) involves the use of nutrient concentration ratios to determine the relative sufficiency of nutrients within the plant tissue. A data bank comprising yield, leaf nutrient concentration for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) and soil fertility status from 1200 individual fields from 15 estates representing the major rubber growing regions of South India was built. DRIS norms for the nutrients N, P, K, Ca and Mg were developed from a regrouped data set having uniformity in age and system of tapping. The variance ratio (low yield/high yield) was highly significant for the nutrient combinations involving Mg indicating the direct role of Mg on latex yield. The mean valuesa and the corresponding cv from the high yielding population for the ratio N/P, K/N, K/P, Ca/N, Ca/P, Ca/K, Ca/Mg, N/Mg, P/Mg and K/Mg were selected as the standard norms. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Data bank |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | DRIS |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Foliar diagnosis |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Hevea brasiliensis |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | India |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mathew M |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ranganathan C R |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sethuraj M R |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Date acquired | Serial Enumeration / chronology | Koha item type |
|---|---|---|---|---|---|---|---|---|
| Journals | RRII Library | RRII Library | 17/12/2021 | Volume 6, Issue 1&2 | Journals |