The fate of surface residue mulch during the dry winter and spring seasons in Zimbabwe (Record no. 7650)

000 -LEADER
fixed length control field 03654nam a22003617a 4500
001 - CONTROL NUMBER
control field 90283
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20190927201701.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 121211s ||||f| 0 p|p||0|| |
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) CIS-5192
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Nhamo, N.
Affiliation Conference on International Agricultural Research for Development; Tropentag, Germany; 9-11 Oct 2007
110 0# - MAIN ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element University of Kassel-Witzenhausen|University of Gottingen
245 00 - TITLE STATEMENT
Title The fate of surface residue mulch during the dry winter and spring seasons in Zimbabwe
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Date of publication, distribution, etc. 2007
300 ## - PHYSICAL DESCRIPTION
Extent 5 pages
340 ## - PHYSICAL MEDIUM
Material base and configuration Computer File|Printed
520 ## - SUMMARY, ETC.
Summary, etc. Mulching is important in protecting the surface structure and reducing erosion of poorly structured degraded soils. The high intensity short duration erosive rain storms experienced at the onset of the wet cropping season in Zimbabwe makes soil cover especially important. Conservation Agriculture (CA), comprising minimal soil movement, surface mulch and crop rotation, is being researched and promoted to increase land and labour productivity while enhancing the natural resource base dedicated to agriculture. Maintaining soil cover under CA systems also contributes to soil biota biomass build-up. Given competing uses of crop residues on the farm, knowledge of mulch losses through decomposition is important in maintaining and managing the mulch over the winter and spring seasons to maintain sufficient soil cover at the onset of the rainy season. Coarse-meshed polyester litter bags were used to study the rate of maize litter loss from the soil surface. The aim of the experiment was to assess the rate of fauna-driven mulch decomposition on CA and conventionally ploughed plots. A total of 256 litter bags, mesh size 5 mm, were used to measure loss of litter mass during winter and spring in one on-station trial (Henderson Research Station) and four on-farm sites (two each from Shamva and Zimuto). The sites represented agro-ecological zones II and IV of Zimbabwe, some with heavy clay and others with sandy soils. At Henderson litter bags were applied on the soil surface of four treatments with different levels of soil movement: conventionally ploughed (CP), direct seeded (DS), manually-dug basins (BA) and manual sowing into rip lines (MR). The on-farm sites included conventional ploughing, ripper (RR) and direct seeder treatments were used. A negative exponential decay model y = yoe-kt described surface litter loss data adequately. At Henderson, daily k rates were in the order BA>DS=CP>MR whereas at Chinyanga and Kajengo (Shamva) and Zhinya (Zimuto) DS>SS>CP. The influence of soil mulch on the microclimate explained the variation in decomposition between CA treatments and conventional ploughing. The measurements suggest low decompositions rates of surface applied maize litter during winter and spring. Losses can be managed by mulch supplementation to achieve adequate soil cover at the start of the rainy season. Further, the results show that decomposition during winter allows carryover of mulch on CA plots into the next season
536 ## - FUNDING INFORMATION NOTE
Text of note Conservation Agriculture Program
546 ## - LANGUAGE NOTE
Language note English
594 ## - STAFFID
StaffID INT2939
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element litter bags
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element mulch
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Reduced tillage
9 (RLIN) 1361
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element residue decomposition
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Conservation agriculture
9 (RLIN) 2619
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Martius, C.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Wall, P.C.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
9 (RLIN) 877
Personal name Thierfelder, C.
Miscellaneous information Sustainable Intensification Program
Field link and sequence number INT2939
856 4# - ELECTRONIC LOCATION AND ACCESS
Link text Access only for CIMMYT Staff
Uniform Resource Identifier http://46.20.115.203/download/cis/90283.PDF
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Conference proceedings
Source of classification or shelving scheme
Holdings
Withdrawn status Lost status Damaged status Not for loan Collection code Permanent Location Current Location Date acquired Full call number Barcode Date last seen Copy number Price effective from Koha item type
  Not Lost     CIMMYT Staff Publications Collection CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 2015-02-10 CIS-5192 635048 2015-02-10 1 2015-02-10 Conference proceedings
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Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org