Nitrate transport in clay soils and its losses into field drains tiles from urea applied for sugar beet (Record no. 40557)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03657cab a2200277Ia 45 0 |
| 001 - CONTROL NUMBER | |
| control field | u185152 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | SIRSI |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 100921s2007 ua ss b eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EAL |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | ara |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | ART MUJAS V32 No6 68 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Antar, A. S. |
| 240 10 - UNIFORM TITLE | |
| Uniform title | Mansoura University journal of agricultural sciences, 2007 v. 32 (6) |
| Medium | [electronic resource]. |
| 245 10 - TITLE STATEMENT | |
| Title | Nitrate transport in clay soils and its losses into field drains tiles from urea applied for sugar beet |
| Medium | [electronic resource]. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | انتقال النترات في الاراض الطينية وفقدها الي المصارف الحقلية المغطاه من اليوريا المضافة لبنجر السكر. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | p.4987-4998 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Includes reference. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Two field experiments were carried out at Fuwwa district, Kafr EI-Sheikh Govemorate (North Nile Delta), during the two growing seasons 2005/2006 and 2006/2007 to find out the impact of tile drainage system with two spacings of 30-m and 60-m on nitrate losses. N-fertilizer in the form of urea was added in two doses before the first and second irrigation. Results indicated that, water table levels increased with time after irrigation. The drop was faster with 30 m spacing than 60 m one. Drain discharge were higher for 30 m spacing (0.09 - 9.15 mrnlday) than 60 m one (0.34-7.48 mm/day). N03' content of the soil was decreased with the increasing of soil depth. The highest contents of N03' were found after fertilizer application, and ranged from 29.4 to 61.5 ppm. These contents were reduced at the end of seasons. After fertilizer application, N03' content was lower to some degree in 30 m spacing than 60 m spacing. At the end of seasons, N03' content was increased under 60 m spacing than 30 m by about 26.3% and 24.9% for the first and second seasons, respectively. Nitrate concentration in drainage water during the two growing seasons was reduced with the time and it ranged from 11 to 18.5 ppm. The concentration of N03' was higher under 30 m spacing than 60 m spacing. The average of N03' concentrations for 30 m and 60 m spacings in the first season were 12.9 and 11.9 ppm, respectively. The estimated loss of N03'was 16.7 kglfed for 30 m drain spacing and 11.7 kg/fed for 60 m. Also, in the second season the estimated loss of N03' was 16.8 kg/fed for 30 m drain spacing and 11.8 kg/fed for 60 m one. N03' concentration in the groundwater ranged from 12.4 to 20.1 ppm and reduced at the end of seasons. The concentration of n in groundwater waf'. higher with 30 m spacing than 60 m one. Root, shoot and gross sugar yield of sugar beet was higher under 30 m spacing than 60 m one. N-uptake by root and shoot was paralleled to the yield results, whereas, N-uptake of root and shoot was higher with 30 m spacing than 60 m spacing, in both seasons. Nitrogen application efficiency (%) was higher in 30 m spacing than 60 m for both seasons. Research should be focused on designing practical strategies to minimize the preferential flow during the first few irrigations after fertilizers application and consequently nitrate loss. Continued research is also needed on ways to better predict and apply N to more closely match the needs of the crop during the growing season. |
| 546 ## - LANGUAGE NOTE | |
| Language note | Summary in Arabic. |
| 596 ## - | |
| -- | 1 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sugar beet |
| General subdivision | Irrigation. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Nitrates |
| General subdivision | Environmental aspects. |
| 650 #3 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | soil transport processes |
| 773 0# - HOST ITEM ENTRY | |
| Title | Mansoura University Journal of Agricultural Sciences. |
| Related parts | 2007.v.32(6) |
| International Standard Serial Number | 1110-0346 |
| Control subfield | nnas |
| Record control number | u182197 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://nile.enal.sci.eg/EALE/2007/MUJAS/3207/6/4987.pdf">http://nile.enal.sci.eg/EALE/2007/MUJAS/3207/6/4987.pdf</a> |
| Public note | Full Text Article. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Articles |
| Source of classification or shelving scheme | Library of Congress Classification |
No items available.