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2025 Annual Photo Contest Results

We’re excited to announce the results of our annual photo contest! Thank you for the incredible submissions from across Africa. Your participation helps us showcase nutrient deficiency examples and plant nutrition research, raising awareness about healthy soils and crops, and sharing interesting activities and perspectives about agricultural R&D in Africa.

Cash prizes have been awarded to the top photos in each category, and we’re pleased to feature additional honourable mentions.

The contest will reopen in early 2026—watch for details in the next issue of Growing Africa, on our website, or follow us on social media for updates.

Thank you for helping us celebrate the great work towards improving nutrient use in Africa!

Crop Nutrient Deficiency Category

Winning Entry: Calcium Deficiency in Carnation Plants
Mr. Victor Kipkurui
Naivasha, Kenya

Mr. Kipkurui’s photos from a field of carnation plants (Dianthus caryophyllus) growing in Naivasha, Kenya, provides a clear example of calcium (Ca) deficiency. Victor explains that the symptoms of leaf tip burn are a result of the current prevailing conditions of high relative humidity and heavy rains which hindered plant uptake of calcium even if supplied at regularly adequate rates within fertigation solutions. Since calcium uptake is dependent on a steady transpiration stream, if relative humidity is high the resulting decline in transpiration reduces calcium absorption and limits its concentration in actively growing tissues like leaf tips. Mr. Kipkurui’s further explains that mitigation measures involve additional calcium application with foliar sprays and, if grown in a controlled environment, dehumidification using fans during night hours.

Honourable Mention
Mr. Abubakar Ahmad Rufa’l
Yakawada Giwa Local Government Area, Kaduna State, Nigeria

Abubakar shares a photo from a crop of okra growing in his home garden that is showing vivid symptoms of magnesium (Mg) deficiency observed as yellowing between the leaf veins, and leaf curling, initially on older growth.

Honourable Mention
Mr. Workat Sebnie
Lalibella, Ethiopia

Mr. Sebnie’s photo was taken from an experiment studying nitrogen (N) and phosphorus
(P) rates in wheat. It clearly illustrates the effects of N deficiency on plant growth in the
experiment’s N omission control plot.

Plant Nutrition Research Category
Winning Entry: Striga Infestation in Maize
Mr. Moses Odur
Mumias West, Kakamega County, Kenya

Mr. Odur took this photo from a smallholder maize farm in Kenya, which shows an active infestation of Striga
hermonthica (commonly known as purple witchweed) a parasitic plant that significantly reduces maize yields in the region. His ongoing field research links the persistence of Striga to acidic soil conditions (low pH) and plant stress caused by inherent nutrient deficiencies. Moses’s team has implemented agricultural liming treatments to correct soil pH and improve nutrient availability. While they have recorded a notable reduction in Striga density, total eradication has not yet been achieved, indicating the need for integrated soil and crop health strategies.

Honourable Mentions
Ms. Andrialalao Sophie Raharimalala
Ankilizato, Menabe region, Madagascar

Ms. Raharimalala took this photo from a farmer’s field growing common bean, an off-season legume crop in
rotation with lowland rice. Andrialalao explains that although farmers in this region may not fully understand the underlying mechanisms of soil fertility improvement, they do recognize the benefits of integrating legumes into their crop rotation. The visible improvement in rice growth and the additional yield obtained after rotating with a leguminous crop encourage them to continue this practice. In addition, the legume grains provide a valuable source of protein and extra income, contributing to improved household nutrition and livelihoods.
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