Effective day lengths for the study of photoperiod sensitive reactions in plants (Record no. 88632)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02024nab a22003497a 4500 |
| 001 - CONTROL NUMBER | |
| control field | 39649 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | CO-PlCIA |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20130510185006.0 |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | CO-PlCIA |
| Transcribing agency | CO-PlCIA |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 120511t1970 000 0seng d |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Francis, Charles Andrew |
| 245 ## - TITLE STATEMENT | |
| Title | Effective day lengths for the study of photoperiod sensitive reactions in plants |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 62(6):790-792 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | The number of hours with a light intensity above the critical level for photoperiod sensitive reactions in plants is greater than the number of sunglight hours. In temperate latitudes, dark periods calculated from time of sunset to sunrise are nearly 1 hour longer than the effective dark period with an intensity less than 1 ft.-c.; conversely, the effective photoperiod is longer by 1 hour. The length of the twilight period was used to calculate the number of "photoperiod effective" hours above critical intensities of 10, 5, 2, and 1 ft.-c. (108, 54, 22, and 11 lux). These photoperiodic day lengths are presented for latitudes from 70 degrees N to 60 degrees S and all months of the year. Heavy cloud cover reduces the effective photoperiod, while scattered high clouds may reflect enough light from the sun below the horizon to lengthen the day slightly. These physical day lengths may be used to predic plant response for different planting dates in a given location when critical intensities of light and critical photoperiods which influence reactions in each crop sciences are known |
| -- | eng |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Photoperiodicity |
| 9 (RLIN) | eng |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Daylight |
| 9 (RLIN) | eng |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Crops |
| 9 (RLIN) | eng |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Adaptation |
| 9 (RLIN) | eng |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Fotoperiodismo |
| 9 (RLIN) | spa |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Luz del día |
| 9 (RLIN) | spa |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Cultivos |
| 9 (RLIN) | spa |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Adaptación |
| 9 (RLIN) | spa |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Thompson |
| -- | spa |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | CIAT Autor |
| -- | spa |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | RJ |
| -- | spa |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Articles in Refereed Journals |
| -- | eng |
| 773 ## - HOST ITEM ENTRY | |
| Title | Agronomy Journal (USA) |
| Place, publisher, and date of publication | 1970 |
| 998 ## - Data Base | |
| DataBase | CATAL |
| 998 ## - Data Base | |
| DataBase | BICIAT |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Library of Congress Classification |
| Koha item type | Journal Article |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Use restrictions | Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Total Checkouts | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Library of Congress Classification | Restricted Access | Not For Loan | Journal Collection | CIAT Library | CIAT Library | Journal Collection | 05/11/2012 | 05/11/2012 | c.1 | 05/11/2012 | Journal Article |