The Fence Post (Issue 2)

This week: why ploughing might be doing more harm than good, a new superfood for bees, and what thirty years of warmer winters are doing to the fungi that feed our grasslands. 

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1 | Using fibre-optic cables for soil tilling management 

Tilling has been part of farming for thousands of years. But a recent study argues that modern heavy ploughing is making things worse, not better. 

Researchers used fiber-optic cables to track how rainwater moves through soil tilled to different depths. In more deeply worked ground, rainwater pooled near the surface and evaporated quickly, rather than seeping downward to where plant roots need it. 

The team says disrupting the soil’s natural water network doesn’t just reduce crop productivity. It also makes land less resilient to the floods and droughts farmers are increasingly facing. 

The same fiber-optic technique could double as a low-cost, real-time tool for monitoring soil moisture across large farm areas. 

Read more: Heavy soil tilling for agriculture can do more harm than good , from Science News, 30 March 2026 

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2 | A Superfood for Bees 

A third of the food we eat depends on pollination. So, when bees struggle, so would our food security.  

Climate change and intensive farming have reduced the floral variety bees depend on, while most artificial pollen substitutes provide calories without the sterols bees actually need. 

Researchers at the University of Oxford, working with the Royal Botanic Gardens Kew and partners in Denmark, engineered a yeast that produces the key nutrients bees normally get from pollen. In controlled trials, colonies fed this enriched diet produced up to 15 times more larvae than those on standard feed. The researchers estimate that the product could be made commercial availability within two years. 

Read more: Scientists uncovered the nutrients bees were missing — Colonies surged 15-fold — from ScienceDaily, 27 March 2026 

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3 | Unveiling the hidden impacts of warming winters on Fungi 

A thirty-year experiment in the Colorado Rockies has produced one of the most striking long-term findings in soil science in recent memory. 

Plots of land warmed by 2°C over three decades shifted above ground from grassland to shrubland. Below the surface, researchers found noticeably fewer mycorrhizal fungi, leaving plants less able to acquire nutrients or cope with drought and freezing. 

The culprit is a timing mismatch. Plants respond to light as well as temperature, but soil microorganisms respond to temperature and nutrient availability. Warmer winters cause these fungi to become active well before plants are ready to use what they provide. 

Read more: Warming winters are disrupting the hidden world of fungi — The Conversation | PNAS study 

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For any enquires and feedback, email us at smartfertiliser-hub@unimelb.edu.au