MARC details
| 000 -LEADER |
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| fixed length control field |
03229nam a22004697a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G74501 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20211006084815.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s ||||f| 0 p|p||0|| | |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
92-9146-065-6 |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
P33 |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
P35 |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
633.15 |
| Item number |
EAS No. 6 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Ikerra, S. |
| Affiliation |
Maize Production Technology for the Future: Challenges and Opportunities. Proceedings of the Eastern and Southern Africa Regional Maize Conference, 6; Addis Ababa (Ethiopia); 21-25 Sep 1998 |
| 110 2# - MAIN ENTRY--CORPORATE NAME |
|---|
| Corporate name or jurisdiction name as entry element |
Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) |
| 245 00 - TITLE STATEMENT |
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| Title |
Soil nitrogen dynamics and maize yields in a Gliricidia Sepium-maize intercrop in Southern Malawi |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Addis Ababa (Ethiopia) |
| Name of publisher, distributor, etc. |
CIMMYT|EARO : |
| Date of publication, distribution, etc. |
1999 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
p. 226-231 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Many soils of southern Africa are severely deficient in N, but inorganic fertilizers are frequently unaffordable for most farmers. Leguminous fallows or intercrops can alleviate N deficiency, but N use efficiency of organic inputs may be low due to non-synchrony of N release and crop N requirements. We monitored soil inorganic N dynamics for two seasons in a gliricidia [Gliricidia sepium (Jacq.) Walp.]- maize (Zea mays L.) intercrop in the unimodal rainfall area of southern Malawi. Treatments were plus or minus gliricidia, and N at 0, 24 or 48 kg N ha-1 in factorial combination. Application of gliricidia prunings significantly (p < 0.001) increased topsoil (0-20 cm) inorganic N at the end of the dry season. Fertilization alone also increased topsoil N (p < 0.001 ), but accumulated 38 to 41% less N than the tree plots. Differences between tree and fertilized plots became non-significant by 4 weeks after planting. Tree plots accumulated significantly (p < 0.01) more ammonium-N during the dry season. Nitrate-N remained constant during the dry season but rose rapidly in tree plots after the onset of rains. Both tree biomass and inorganic N significantly (p < 0.001) increased maize grain yields. Pre-season inorganic N accounted for 71% of the variation in maize yields for the two seasons data combined. A 2- factor model including pre-season inorganic N and anaerobic N mineralization potential accounted for 84% of the variability in maize yields for the two seasons data combined, Pre-season inorganic N could be used to adjust or eliminate basal applications of N in seasonal rainfall areas, particularly in seasons preceded by a drought year. Delayed timing of biomass additions may increase N use efficiency by the crop. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
0103|AL-Maize Program|AGRIS 0102|AJ |
| 595 ## - COLLECTION |
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| Collection |
CIMMYT Publications Collection |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Africa |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Gliricidia sepium |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Inorganic fertilizers |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Intercropping |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| 9 (RLIN) |
1963 |
| Topical term or geographic name as entry element |
Legumes |
| Miscellaneous information |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Maize |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1173 |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Malawi |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Mineralization |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Nitrates |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Nitrogen |
| 653 0# - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
CIMMYT |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1314 |
| Topical term or geographic name as entry element |
Zea mays |
| Miscellaneous information |
AGROVOC |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Buresh, R.J., |
| Relator term |
coaut. |
| 9 (RLIN) |
2061 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
CIMMYT |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Maghembe, J.A., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Smithson, P. C., |
| Relator term |
coaut. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Conference proceedings |