Background Image
Previous Page  38 / 84 Next Page
Basic version Information
Show Menu
Previous Page 38 / 84 Next Page
Page Background

April 2016

36

Die innoveringsvermoë en die intensie/motivering van ‘n produ-

sent (die joggie) speel ‘n groot rol in die sukses hiervan. Die bewa-

ringslandbou-innoveringsproses is “op-plaas” en is lewenslank; dit

word ook versterk deur die ondersteuning van ‘n groep produsente,

soos ‘n studiegroep.

Hoe meer hierdie produsentegroepe, -strukture of innoveringsplat-

forms deur ander rolspelers, soos navorsers en landboubesighede

gebruik en ondersteun word, hoe vinniger en beter (kwaliteit) is die

proses en die stelsel.

Op-plaas proewe is een van die belangrikste instrumente in hier-

die leer- of innoveringsproses (sien

Foto 6

en

Foto 7

by die

Ottosdal

No-till

-klubproewe, een van die Graan SA/Mielietrust-

projekte wat bewaringslandbou in die westelike graangebiede

bevorder).

Gevolgtrekking

Die boodskap behoort duidelik te wees: Die manier waarop ons

gaan boer gaan óf meer koolstof in die lug plaas en verder bydra

tot aardverwarming, stofstorms en grondagteruitgang, óf dit gaan

koolstof terug in die grond plaas, reg onder ons voetsole waar dit

hoort en so deel word van die langtermynoplossing.

Die heropbou van grond deur regenererende bewaringslandbou

is ‘n prakties-haalbare sleutel tot die volhoubaarheid van graanver-

bouing in Suid-Afrika en die wêreld en is die verantwoordelikheid

van ons generasie.

Verwysings

Department of Environmental Affairs (DEA). 2015.

Strategic climate policy fund:

Improvement of the greenhouse gas emissions inventory for the agricultural sector.

Document 1 of SCPF003.

Du Preez, CC. 2003.

Volhoubare landgebruik en grondkwaliteit: organiese materiaal

as indikator.

SA Tydskrif vir Natuurwetenskap en Tegnologie 22, no. 4. ISSN 0254-

3486.

Du Preez, CC, Van Huyssteen, CW and Mnkeni, PNS. 2011.

Land use and soil organic

matter in South Africa 2: A review on the influence of arable crop production.

S Afr J Sci. 107(5/6), Art. #358, 8 pages. doi:10.4102/sajs. v107i5/6.358.

Griffin, DW, Kellogg, CA and Shinn, EA. 2001.

Dust in the wind: Long range transport

of dust in the atmosphere and its implications for global public and ecosystem

health.

Global Change Hum. Health 2, 20 - 33.

Intergovernmental Panel on Climate Change (IPCC). 2014.

Fifth assessment report:

Climate change 2014 synthetic report.

Available at:

https://www.ipcc.ch/report/ar5/

(accessed 20 August 2015).

Jones, C. 2007.

Building soil carbon with yearlong green farming.

Evergreen

Farming Newsletter 08.

Lal, R, Negassa, W and Lorenz, K. 2015.

Carbon sequestration in soil.

Current

Opinion in Environmental Sustainability 15, 79 - 86.

Lobe, I, Amelung, W and Du Preez, CC. 2001.

Losses of carbon and nitrogen

with prolonged arable cropping from sandy soils of the South African Highveld.

European Journal of Soil Science 52, 93 - 101.

Pimentel, D. 2006.

Soil Erosion: A food and environmental threat.

Environment,

Development and Sustainability 8, 119 - 137.

Swanepoel CM, Van der Laan, M, Weepener, HL, Du Preez, CC and Annandale,

JG. 2015.

Review and meta-analysis of organic matter dynamics and associated

greenhouse gas emissions in cultivated soils in southern Africa.

Presentation at

the Sustainable Soil Management Symposium 5 - 6 November 2015: Stellenbosch,

South Africa.

Wiggs, G and Holmes, P. 2011.

Dynamic controls on wind erosion and dust

generation on west-central Free State agricultural land, South Africa.

Earth Surf.

Process. Landforms 36, 827 - 838.

OP PLAASVLAK

Bewaringslandbou

6: ‘n Somergewas wat direk in dooie winterdekgewas geplant is,

Noordwes-Vrystaat.

Foto: Hendrik Smith

7: Grondprofielondersoek by bewaringslandbouproewe, Ottosdal.

Foto: Hendrik Smith

6

7

Omgekrapte weerpatrone en

verwoestende stofstorms