Die wisselwerking tussen onkruiddoders en grond
Fertasa se grondsuurheidswerkgroep* in samewerking met Graan SA, kyk in hierdie reeks artikels na die oorsake, slaggate, invloed van en oplossing vir grondsuurheid. In hierdie negende artikel in die reeks kyk prof Charlie Reinhardt...
SA producers keen on precision agriculture
The incessant cost-price squeeze which forces producers to continually increase their productivity and reduce input costs, has prompted the author to research current adoption rates, farm-level barriers and perceived benefits of precision agriculture technology.
Surveys...
Target-site herbicide resistance in barley: a three-year summary
Weeds have a negative impact on any crop yield. Depending on the weed species present, such impact can range from very low to total crop loss.
Several studies have been conducted on the possible impact...
Plantestand – ’n balanseertoertjie
Om mielies ekonomies doeltreffend te produseer, is dit eerstens noodsaaklik dat die opbrengspotensiaal wat die grond en reënval bied, ten volle benut word.
Dit vereis aan die een kant dat insette soos saad en kunsmis...
Wat is fout met my koring?
“Daar is groot fout met my koring! Die oes wat aanvanklik goeie potensiaal getoon het, lyk nou treurig en daar is nie pitte in die are nie of die pitte is maer en verkrimp!...
Eyespot reoccurs after 16 years
In South Africa, maize eyespot has generally been of minor economic importance due to its limited incidence range (spatial) and low disease severities, with insignificant yield losses reported even
in more severely affected areas.
Originally this...
Topografie affekteer klimaat en landbou só
Die topografie van ’n gebied kan beskryf word as die rangskikking van natuurlike asook kunsmatige terreinvorms. Dit kan voorwerpe van verskillende hoogtes bo seevlak wat teen verskillende hellings ten opsigte van die horisontale of...
Kunsmispryse styg hemelhoog
Internasionale kunsmispryse, behalwe vir kaliumchloried, is tans (Maart 2021) op die hoogste vlakke in meer as 24 maande (Grafiek 1). Hierdie pryse het veral die afgelope agt maande skerp toegeneem, maar is nog glad...
Bacterial leaf streak found in the Piet Retief district
The pathogen causing bacterial leaf streak (BLS) is Xanthomonas campestris pv zeae, which was first reported in South Africa in 1949. To date maize is the only reported host of this pathogen which was...
Alternaria leaf blight – in search of an integrated control system
Alternaria leaf blight (ALB) of sunflower is caused by Alternaria alternata, a seed-borne pathogen on sunflower, able to infect seedlings from a very young age.
However, the majority of infections take place during head formation....
