TIEN jaar terug is klimaatverandering deur talle nog as \u2019n samesweringsteorie afgemaak. Vandag word daar nie eers meer gepraat oor \u201cas\u201d dit sou gebeur nie, daar word eerder gevra \u201cwat gaan ons doen?\u201d<\/p>\n\n\n\n
Om haar bogenoemde stelling te staaf, het dr. Zelda Bijzet van die Landbounavorsingraad (LNR), Oos-Kaapse boere tydens \u2019n inligtingsdag by die Addo Navorsingstasie oor die impak van klimaatverandering op sitrusproduksie in die Sondagsriviervallei, asook oor die moontlikheid van subtropiese gewasproduksie in die Oos- Kaap, toegespreek.<\/p>\n\n\n\n
\u201cIn sommige plekke loop die bloeisels al uit \u2013 die bome is verward. Sommige streke is nie meer geskik vir sitrus nie.\u201d<\/p>\n\n\n\n
Benewens warmer en meer onvoorspelbare klimaat-toestande is gronderosie ook kommerwekkend, het dr. Bijzet bygevoeg. <\/p>\n\n\n\n
\u201cDie toediening van chemiese stowwe soos kunsmis en plaagdoders het die grond feitlik leweloos gemaak wat tot gevolg het dat die grond sy bindings- en waterdravermo\u00eb verloor. Dus spoel die bolaag tydens goeie re\u00ebnbuie weg.\u201d<\/p>\n\n\n\n
Volgens haar is daar reeds talle boere wat die nie-ploeg opsie volg en hul grond verryk deur die toediening van organiese kompos, bemesting en plantmateriaal-deklae.<\/p>\n\n\n\n
Peste en plae sal volgens Bijzet ook \u2019n toe- nemende kopsorg te midde van klimaatverandering word, gevolglik sal boere hul bespuitings-programme moet aanpas. Di\u00e9 en ander aanpas-sings is nie net vir die oorlewing van die boer noodsaaklik nie, maar ook vir \u2019n stabiele ekonomie.<\/p>\n\n\n\n
\u201cVolume-gewys voer Suid-Afrika, na Spanje en Turkye, die derde meeste vars sitrus uit. Di\u00e9 uitvoere dra 14,8 miljoen by tot die bruto binnelandse produk en is \u2019n reuse werkverskaffer. Nie net ho\u00ebr temperature nie, maar ook wisselende re\u00ebnvalpatrone \u00e9n al hoe minder re\u00ebnval bedreig sitrusverbouing,\u201d aldus dr. Bijzet.<\/p>\n\n\n\n
Dr. Bijzet het die klimaatprojeksies (2015-2090), wat gedoen is om die potensi\u00eble verandering in die vereiste klimaat- toestande vir die verbouing van verskillende sitrussoorte in Suid-Afrika te bepaal, met die boere gedeel.<\/p>\n\n\n\n
Dit skep \u2019n neerdrukkende prentjie van verminderde potensiaal vir verbouing, vernaam as grondtoestande ook in ag geneem word. <\/p>\n\n\n\n
\u201cElke sitrus-spesie in Suid-Afrika, asook die ge-skikte verbouingsgebiede, sal binne die volgende 75 jaar geraak word.\u201d<\/p>\n\n\n\n
Dr. Bijzet het bygevoeg dat besproeiings- water in die toekoms nie as \u2019n noodwendige gegewe beskou kan word nie. Watergehalte kan ook \u2019n toenemend groter kwessie word.<\/p>\n\n\n\n
Die besproeiingswater vir die sitrusboorde van die Sondagsriviervallei kom via die Darlingtondam van die Gariep.<\/p>\n\n\n\n
\u201cDie watergehalte van die Darlingtondam is reeds swak. Dit is baie sout. Wat gaan gebeur as dit nie in hierdie dam of die Gariepdam se opvangsgebiede re\u00ebn nie?\u201d<\/p>\n\n\n\n
Die huidige navorsing dui daarop dat impak van klimaatverandering binne die 15 jaar van 2015 tot 2030 die felste in Suid-Afrika se noorde-like gebiede sal wees.<\/p>\n\n\n\n
\u201cDie grootste impak sal dus op Valencia- en pomelo produksie wees, wat tans 56% van alle sitrus-aanplantings uitmaak.\u201d<\/p>\n\n\n\n
Een moontlike oplossing om klimaatverandering die hoof te bied, is om \u2019n stabiele kultivar te kweek, het dr. Bijzet, \u2019n plantteler by die LNR, bygevoeg. \u201cEen wat \u2019n voorspelbare opbrengs kan lewer en nie op en af in produksie is nie.\u201d<\/p>\n\n\n\n
Maar \u2019n geskikte plant is slegs deel van die aanpassings-opsies, het Bijzet ges\u00ea, die grond waarin die sitrusboom geplant word, speel net so \u2019n belangrike rol. <\/p>\n\n\n\n
\u201c\u00d3f grondherstel moet sodanig wees dat mikrobes weer ryklik voorkom, \u00f3f dit mag nodig wees om bome in die toekoms in potte \u2013 wat dus \u2019n beheerbare omgewing bied \u2013 te plant.\u201d<\/p>\n\n\n\n
Die mensefaktor is die derde, en ewe belangrike faktor, het dr. Bijzet beklemtoon. \u201cKlimaatverandering veroorsaak dat alles wat jy as boer geweet het, nie meer van toepassing is nie. Boere moet uit hul gemaksone tree en hulself herleer en leer om aan te pas by die onafwendbare klimaatverandering.\u201d<\/p>\n\n\n\n
Ten slotte het sy die boere aangemoedig om aan te klop by die LNR vir hulp.<\/p>\n\n\n\n
\u201c Vroe\u00ebr het \u2019n boer my gevra hoekom ek hulle al hierdie dinge vertel, want \u2019n boer kan enigiets bestuur,\u201d het sy glimlaggend ges\u00ea, \u201cek weet dit is s\u00f3, maar ons wil help waar ons kan.\u201d<\/p>\n\n\n\n
\n TIEN jaar terug is klimaatverandering deur talle nog as \u2019n samesweringsteorie afgemaak. Vandag word daar nie eers meer gepraat oor \u201cas\u201d dit sou gebeur nie, daar word eerder gevra \u201cwat gaan ons 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\n
\n ,<\/span> <\/span>Dr Zelda Bijzet kan gekontak word by 013 753 7048 \/ 083 280 3498 of per e-pos by zeldab@arc.agric.za<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"