Prof. John Annandale Prof. John Annandale (University of Pretoria) (University of Pretoria) Prof. Rui Brito Prof. Rui Brito (University Eduardo Mondlane) (University Eduardo Mondlane) Dr. Martin Steyn Dr. Martin Steyn (University of Pretoria) (University of Pretoria) Prof. Richard Stirzaker Prof. Richard Stirzaker (CISRO) (CISRO) by by Paiva Munguambe Paiva Munguambe WATER & NITROGEN MANAGEMENT ON WATER & NITROGEN MANAGEMENT ON SALT-AFFECTED SOILS IN THE SALT-AFFECTED SOILS IN THE CHÓKWÈ IRRIGATION SCHEME, CHÓKWÈ IRRIGATION SCHEME, MOZAMBIQUE MOZAMBIQUE - - - - - - - - - - - - -- -- - - Progress Report Progress Report - - - - - - - - - - - - -- -- - - Final Scientific Workshop – CP 17 Final Scientific Workshop – CP 17 JHB, 15 to 18 June 2009 JHB, 15 to 18 June 2009 UEM/FAEF
17
Embed
Prof. John Annandale (University of Pretoria) Prof. Rui Brito (University Eduardo Mondlane) Dr. Martin Steyn (University of Pretoria) Prof. Richard Stirzaker.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Prof. John AnnandaleProf. John Annandale (University of Pretoria) (University of Pretoria)
Final Scientific Workshop – CP 17Final Scientific Workshop – CP 17JHB, 15 to 18 June 2009JHB, 15 to 18 June 2009
UEM/FAEF
IntroductionIntroduction
IntroductionIntroduction……
Some features of the CIS Designed in the 50s… drainage was not so relevant….!! Water from Massingir & Macarretane Dams (Gravity) HICEP…… 30,000 ha ( 1,000 ha salinazed & only 6 to 7,000 ha
effectively cultivated) 12,000 farmers (Small <4 ha; Medium 4 to 15 ha; big > 20
ha) Private company (MIA) Water Users Association Rice (summer crop) : 2 to 4.5 ton/ha Vegetables + maize (winter crops): tomatoes up to 60
ton/ha; Heavy clay soils (low infiltration & transmissivity rates) Good irrigation water ( 0.5 dS/m) Poor crop and irrigation water management (Irrigation