A new study has found that the application of fertilizers rich in calcium, magnesium and zinc can vastly improve the growth of potatoes as well as other tubers. Conducted by Egypt’s Mansoura University (www.Mans.edu.eg), the groundbreaking research was published this month in the Journal of Plant Production, an Egypt Scientific Magazine.
“These findings provide valuable insights, especially for potato farmers looking to optimize their crop yields,” M.K.F. El- Tawashy, who headed the research team, said.
“We hope our research will contribute to the development of more effective fertilization strategies for potato production, which can benefit the agricultural industry as a whole,” s/he added.
Better quality, better quantity
The research was done by a team of scientists from Egypt’s Mansoura University, who tested the effects of BRANDT Manni-Plex Ca-Mag and BRANDT Manni-Plex Ca-Zn on potato growth and productivity.
The study found that the foliar application of calcium- and magnesium-rich fertilizers – especially in newly reclaimed soil – greatly enhanced the size of potato yields. According to the study’s findings, improvements were seen in terms of both number and weight.
“This can lead to increased profitability by enhancing both the quantity and quality of the potatoes, which can then be sold at higher prices,” M.K.F. El- Tawashy said.
“The study highlights the importance of using the right fertilizers and application methods,” s/he added, “which can help farmers reduce costs associated with inefficient fertilization techniques.”
Enhancing marketability
According to the study’s findings, the foliar application of BRANDT Manni-Plex Ca-Zn and BRANDT Manni-Plex Ca-Mag to potato plants increased both dry weight and leaf-nutrient accumulation. This, M.K.F. El- Tawashy explained, may be related to the minerals’ functions on potato plants.
“Further studies on potatoes – along with other strategic crops – are still needed to determine the precise correlation between Calcium, Magnesium and Zinc applications and specific environmental factors,” s/he said.
The research also found that these mineral-rich fertilizers stimulate plant growth, thus enhancing the size and total number of leaves. It also found that these three vital minerals serve to boost overall chlorophyll content.
“Our findings highlight the importance of using high-quality fertilizers and the potential benefits of foliar application,” M.K.F. El- Tawashy said. “This will no doubt help farmers all over the world improve the marketability of their produce.”
Fighting world hunger
The study’s findings are a significant step forward in the development of more effective and sustainable fertilization strategies for potato production.
“By improving their fertilization practices, farmers can also reduce the risk of crop failure and enhance the overall sustainability of their operations,” M.K.F. El- Tawashy said. “This, in turn, will help them achieve greater profitability in the long term.”
M.K.F. El- Tawashy and her/his research team plan to continue their work and explore the potential benefits of other fertilizers and application methods.
“The potato industry is a major contributor to the global agricultural sector,” s/he explained. “Our most recent findings could have serious implications for the ongoing quest to combat world hunger.”











![Canon makes history with 170 Million lenses milestone Canon’s RF/EF lens production exceeds 170 million units, extending its world record in interchangeable lens production Both EF and RF lenses have gained strong support from a wide range of users—from beginners to professionals—leading to steady growth in production volume Canon Inc. announced that, in October 2025, Canon reached a historic milestone of producing a cumulative total of 170 million RF and EF interchangeable lenses for its EOS series, extending its world record for the highest number of interchangeable camera lenses ever produced. The EF lens was introduced in 1987 as the dedicated lens system for Canon’s EOS autofocus single-lens reflex film camera, debuting simultaneously with the EOS system itself. Since their inception, EF lenses have led the industry by incorporating a series of world-first technologies, including the Ultrasonic Motor (USM), Image Stabilizer (IS) technology, and a multilayered Diffractive Optical (DO) element, and have undergone numerous evolutions. In 2018, Canon launched the RF lens series, designed for the EOS R mirrorless camera system, which features a large aperture, short back focus, and high-speed communication system to deliver even higher image quality. The RF and EF lens series lineup now includes a total of 108 models , covering a wide range of focal lengths from ultra-wide 10mm to super-telephoto 1200mm. The series also includes the world’s first VR lens lenses with built-in power zoom suited for video shooting, and even those compatible with power zoom adapters—expanding the scope of creative expression and meeting the diverse needs of users for both still photography and video. EF lens production began at Canon’s Utsunomiya Plant in 1987. Since then, both EF and RF lenses have gained strong support from a wide range of users—from beginners to professionals—leading to steady growth in production volume. Today, Canon manufactures lenses at five sites: Utsunomiya Plant; Canon Inc., Taiwan; Canon Opto (Malaysia) Sdn. Bhd.; Oita Canon Inc.; and Miyazaki Canon Inc. Milestones include 10 million units produced by 1995 and 50 million by 2009. Then in 2014, Canon became the first company in the world to reach 100 million interchangeable camera lenses produced. In October 2025, the company reached 170 million units, leading to the achievement of this world record. The 170 millionth lens produced was the RF 70-200mm F2.8 L IS USM Z. Canon has maintained the No.1 global market share for digital interchangeable-lens cameras for 22 consecutive years since 2003. Moving forward, Canon will continue to refine its proprietary imaging technologies and further strengthen and expand its lens lineup, pioneering new imaging possibilities and contributing to the continued evolution of photographic and video culture. Highlights in the development of the RF/EF Lens Series The EF lens, which was introduced alongside EOS in March 1987, has adopted a variety of world-first technologies, including Image Stabilizer (IS) technology, featured in the EF 75-300mm f/4-5.6 IS USM released in 1995; a multilayered Diffractive Optical (DO) element, used in the EF 400mm f/4 DO IS USM launched in 2001; and Subwavelength Structure Coating (SWC) [7], applied to the EF 24mm f/1.4L II USM released in 2008. In 2021, Canon launched the EOS VR System, a VR video system consisting of a mirrorless camera [8], dedicated lens, and PC software, thereby creating a 3D 180° VR video through an interchangeable lens camera. In 2024, Canon began rolling out a new series of hybrid lenses equipped with iris rings, designed to meet the needs of both still photography and professional video production. For zoom lenses, the company has also launched RF 24-105mm F2.8 L IS USM Z and RF 70-200mm F2.8 L IS USM Z which are compatible with power zoom adapters. For single focus lenses, the company released F1.4 L hybrid prime lens series that unified the size and ring and button position across models. In September 2025, Canon launched RF 85mm F1.4 L VCM, the fifth model in this series, demonstrating that it can meet demands in line with the changing times. [1] Includes EF, EF-S, EF-M, EF Cinema, RF, RF-S, and RF Cinema lenses and extenders. As of October 21, 2025 (according to a survey by Canon) [2] Among SLR cameras (according to a survey by Canon) [3] Number of products sold as of October 22, 2025 (including extenders). The number of lens models for sale is different according to market figures. [4] Focal length is 5.2mm to 1200mm when including VR lenses [5] An interchangeable digital camera lens that enables VR footage with a single camera. Among interchangeable lens digital cameras released as of October 5, 2021 (according to a survey by Canon) [6] Refers to unit share (according to a survey by Canon) [7] A special coating with advanced anti-reflective properties [8] For applicable cameras, please visit the official Canon website *Release dates in this document refer to dates in Japan. Canon Central and North Africa (CCNA) is a division within Canon Middle East FZ LLC (CME), a subsidiary of Canon Europe. The formation of CCNA in 2016 was a strategic step that aimed to enhance Canon’s business within the Africa region - by strengthening Canon’s in-country presence and focus. CCNA also demonstrates Canon’s commitment to operating closer to its customers and meeting their demands in the rapidly evolving African market. Canon has been represented in the African continent for more than 15 years through distributors and partners that have successfully built a solid customer base in the region. CCNA ensures the provision of high quality, technologically advanced products that meet the requirements of Africa’s rapidly evolving marketplace. With over 100 employees, CCNA manages sales and marketing activities across 44 countries in Africa. Canon’s corporate philosophy is Kyosei – ‘living and working together for the common good’. CCNA pursues sustainable business growth, focusing on reducing its own environmental impact and supporting customers to reduce theirs using Canon’s products, solutions and services. At Canon, we are pioneers, constantly redefining the world of imaging for the greater good. Through our technology and our spirit of innovation, we push the bounds of what is possible – helping us to see our world in ways we never have before. We help bring creativity to life, one image at a time. Because when we can see our world, we can transform it for the better.](https://businessinsights.africa/wp-content/uploads/2026/05/1.-Canon-EOS-R50-Mirrorless-Camera-for-Beginners-1024x764-1-100x70.jpg)





