Fungal diseases represent a persistent threat to crops, causing significant economic losses and impacting food security. They occur when fungal spores germinate and penetrate a plant. The fungus grows in, on and through the plant and can reproduce by releasing spores that can lead to secondary infections.
Leonard Oberholzer, corn go-to-market lead for Africa at Bayer Crop Science, told Farmer's Weekly that for fungi to infect the crop, the fungi (pathogen), crop (host) and a favourable environment must be present at the same time. This phenomenon is known as the disease triangle.
To reduce the probability of fungal infections, integrated pest management (IPM) is handy to eliminate the host, manipulate the environment or reduce pathogens to help prevent their future spread. An example is alternating between crops (crop rotation), planting resistant cultivars, and managing the amount of crop residue left on the soil before planting a new crop.
CONTACT VS SYSTEMIC
Fungicides are broadly categorised based on their mode of action (MOA), encompassing two main types: contact and systemic. Contact fungicides primarily act on the surface of plant tissues, forming a protective barrier that inhibits fungal spore germination and growth. They do not penetrate plant tissues and instead provide localised protection, making them effective against foliar diseases and superficial infections. They offer immediate yet temporary protection as they can be washed away by rainfall or degraded by sunlight.
هذه القصة مأخوذة من طبعة July 26, 2024 من Farmer's Weekly.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة July 26, 2024 من Farmer's Weekly.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
Review: the Toyota Hilux 2.8GD-6 DC 4×4 GR-Sport III
The third iteration of the Hilux GR-Sport has finally achieved a sense of presence and style befitting its raceinspired branding. But is this the ultimate modern Hilux? Car Magazine takes a closer look.
Why maize prices soar in Kenya and Malawi but not Tanzania
Namhla Landani, an economist at the Centre for Competition, Regulation and Economic Development, University of Johannesburg, and Arthur Khomotso Mahuma, economist and researcher at the Centre for Competition, Regulation and Economic Development, University of Johannesburg, analyse the issue.
Wet carcass syndrome: a scourge in SA sheep farming
Wet carcass syndrome continues to take a huge financial toll on South African sheep farmers. Octavia Avesca Spandiel spoke to two experts about the ongoing genetic research aimed at addressing this issue.
Pollination innovation
Bee-Tech Group is transforming South African agriculture with pollination technologies that boost crop yields and enhance sustainability. Founder Michiel Bruggeman spoke to Octavia Avesca Spandiel.
The valuable addition that makes this farm tick
Owning the value chain provides farmers with far more control over their produce. However, it requires a fine balance between production and ensuring there is a strong and steady market. Lindi Botha visited Rosemary Hill to find out how this essential oil producer leverages hospitality to make the farm viable.
The benefits of recirculating aquaculture systems
A powerful set of attributes has established recirculating aquaculture systems as a cornerstone of global temperate fish farming, writes Leslie Ter Morshuizen, owner of Aquaculture Solutions.
Minister has big plans for emerging and commercial farmers
DA leader and Minister of Agriculture John Steenhuisen spoke to Glenneis Kriel about his priorities for his department over the next five years, including an increased focus on biosecurity.
New study aims to make wheat more disease resistant
A recent international study explains how bread wheat has helped to transform the ancient world on its path to becoming the iconic crop that today helps sustain a global population of eight billion.
Conservation farming and biodiversity boost soil health and sustainability
A recent academic event focused on research into the links between soil biodiversity, soil health and sustainable agriculture
What has led to the unparalleled rice shortage in Japan?
Japan is facing a rice shortage amid concerns about a potential 'megaquake', several typhoons and an annual week-long holiday, which has led to an increase in panic buying.