The diamondback moth (DBM; Plutella xylostella), which breeds prolifically and whose larvae are highly destructive, is the number one pest of brassicas in South Africa.
Young plants are particularly vulnerable. DBMs lay their eggs in small clusters on the young leaves and the larvae later hatch and eat holes in the leaves. These holes expand as the leaves grow, reducing the leaf area and, consequently, the yield.
The larvae prefer to feed on the underside of the leaves, leaving the upper epidermis in place; this gives the appearance of little translucent ‘windows’.
Because they feed under the leaves, especially when these leaves are just above the ground, it is extremely difficult to reach DBMs with insecticides.
هذه القصة مأخوذة من طبعة 16 June 2023 من Farmer's Weekly.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 8500 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة 16 June 2023 من Farmer's Weekly.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 8500 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
The big appeal of a small Karoo dorp
Van Wyksdorp in the Karoo may not be near to anything, yet exploring its surrounding mountain passes and staying there is a journey very much worth taking.
THE HITCHING POST
I am a retired man and have been a widower for two years. I would like to hear from fun-loving women between 50 and 60 years of age with a good sense of humour.
Theft of horsebox wheels: an ongoing problem
When thieves broke in at her farm recently, they came well prepared with the right tools to forcibly remove locknuts on wheels, says Dr Mac.
How much nitrogen is enough?
Nitrogen is key to profitable vegetable farming. However, the application of this element can be overdone, causing crop loss, or underdone, with the same result, writes Bill Kerr.
Review: Toyota Hilux GR-Sport III
Siyavuya Mbaduli takes a look at Toyota's highly anticipated GR-Sport Ill, which is making a strong entry into the local market as a rugged and ready off-road adventurer.
Medical cannabis production is easier said than done
The production of medical cannabis calls for extreme attention to detail and precision, as well as compliance with intricate legislative requirements and official demands. It also calls for perseverance, as Annelie Coleman found out on a visit to medical cannabis producers Coenie and Ilse Venter near Viljoenskroon in the Free State.
The biggest threats to horse health in South Africa
Janine Ryan looks at the most threatening diseases and conditions in South Africa that impact horses and other equines, including colic, laminitis and Cushing's disease.
Paper: part and parcel of the agriculture industry
Despite the everyday use of electronic communication and other technologies, society is far from becoming paperless. Wood-based paper products are woven into the fabric of our everyday lives. Paper is used in printing, writing and stationery, food packaging, packaging of other goods and medicine, for hygiene and insulation purposes, money, and even in jewellery and construction.
Challenges facing vet services in South Africa
Dr Paul van der Merwe, CEO of the South African Veterinary Association, spoke to Glenneis Kriel about the issues discussed at the World Veterinary Association Congress and how these related to the local industry.
Building a farming legacy from scratch
Mac Mabidilala is proof that you don't need to own land to get started in agriculture. He spoke to Glenneis Kriel about how he is realising his farming dream.
