Archive: April 2024

In New Zealand, where farming practices are integral to the economy and food production, soil fertility plays a pivotal role in determining the success of agricultural endeavours. However, amidst economic challenges such as recession and inflation, ensuring optimal soil health becomes even more imperative for farmers striving to maintain productivity and profitability.

Phosphate, a key component of soil fertility, serves as a vital nutrient for plant growth and development. Its presence in the soil is essential for facilitating various biochemical processes necessary for crop production and pasture growth. Through soil testing and fertiliser recommendations, experts like Dr Rajendram help farmers assess and address deficiencies in phosphate levels, ensuring that their land remains fertile and productive.

“Phosphate, the silent hero beneath our feet, holds the key to unlocking the potential of our soil. In a world of economic uncertainties, its role in maintaining soil fertility becomes paramount. By nurturing this vital nutrient, we not only cultivate bountiful harvests but also sow the seeds of sustainability for generations to come.” – Dr. Gordon Rajendram

By maintaining adequate phosphate levels in the soil, farmers can optimise nutrient uptake by crops and pastures, leading to improved yields and enhanced animal nutrition. Pasture testing and feed analysis further aid in fine-tuning nutrient management strategies, ensuring that livestock receive balanced diets essential for growth and performance.

Moreover, prioritising soil health and nutrient management not only benefits farm profitability but also contributes to environmental sustainability. By minimising the use of excess fertilisers and adopting precision farming practices, farmers can reduce their environmental footprint and mitigate the risk of nutrient runoff into waterways.

Dr. Gordon Rajendram’s expertise in soil science and agricultural practices underscores the importance of proactive soil management in optimising farm productivity and sustainability. Through ongoing research and education initiatives, he continues to empower farmers with the knowledge and tools needed to safeguard soil health and enhance agricultural resilience in the face of evolving challenges.

In conclusion, phosphate stands as a cornerstone of soil fertility, supporting vibrant farming ecosystems and ensuring food security for future generations. By heeding the insights of leading soil scientists like Dr Rajendram and prioritising soil health in farming practices, New Zealand farmers can navigate economic fluctuations while fostering a more sustainable and prosperous agricultural landscape.

Contact Dr. Gordon Rajendram

Soil Scientist

Soil Fertility, Agronomy & Farm Environmental Consultant

021 466077

rajendram@xtra.co.nz

www.gordonrajendramsoilscientist.co.nz

‘Bringing science to the farm ‘

Contact Media PA

027 458 7724

phillip@mediapa.co.nz

www.mediapa.co.nz

In South Island, New Zealand, the diversity of soil types offers a unique tapestry that underpins the region’s agricultural and horticultural potential. The island’s varied landscapes are dominated by Podzol soils in the west, Brown and Pallic soils in the east, and semi-arid Brown stony soils in Central Otago. Agraforum New Zealand, based in Canterbury, provides valuable insights into these soils and offers guidance on optimising their use.

Podzol Soils of the West: Characterised by their acidic nature and leached profile, Podzol soils are typically found under forested areas. These soils are often challenging for traditional farming due to their low fertility. However, they are excellent for forestry and certain types of berry cultivation. Enhancing these soils with appropriate organic amendments can improve their productivity for selected crops.

Brown and Pallic Soils of the East: These soils are more fertile and versatile. Brown soils, which are prevalent on terraces and in hill country, are well-drained and suitable for a range of pastoral activities. Farmers can maximize yields by employing regular soil testing and tailored fertilization plans to maintain nutrient levels. Pallic soils, found in both rolling lands and flat terraces, often require careful management to avoid issues with drought stress, particularly under low rainfall conditions. Strategic irrigation and the use of drought-resistant crop varieties can help capitalize on their agricultural potential.

Semi-arid Brown Stony Soils of Central Otago: These soils are unique to the arid conditions of Central Otago. Their stony texture provides excellent drainage, making them ideal for vineyards and stone fruit orchards. Viticulture thrives here, with the region’s renowned Pinot Noir attributing much of its character to these distinctive soils. Proper nutrient management and efficient water use are crucial for sustainable production.

For all these soil types, sustainable practices such as crop rotation, soil testing, conservative tillage, and the integration of organic matter are recommended to enhance soil health and ensure long-term productivity. Agraforum New Zealand continues to support local farmers and growers in adapting these practices, ensuring that the rich soils of South Island are used to their fullest potential.

Contact Agraforum New Zealand

Mobile: 0274 485 159
Email: allan@agraforum.co.nz

www.agraforum.co.nz

Contact Phillip Quay
phillip@mediapa.co.nz
P: 0274 587 724
www.mediapa.co.nz

**Subject to availability**

Profile Fertilisers is proud to present Enforcer, a revolutionary new product in agricultural nutrition. Designed as a slow-release, environmentally friendly alternative to traditional Diammonium Phosphate (DAP), Enforcer offers a balanced formulation of N 15, P 8, S 7, and Ca 16. This unique blend is not only cost-comparable to DAP but also boasts features that are specifically tailored to enhance soil health and plant nutrition over an extended period.

Enforcer’s innovative formulation allows for a 75-day nitrogen release, which ensures a steady supply of this crucial nutrient. This slow release is particularly beneficial during the critical growth phases of crops, reducing the risk of nitrogen leaching into waterways and thereby supporting environmental sustainability. Additionally, the product features a long-term release of phosphate and sulphur, essential nutrients that support root development and overall plant health.

Ideal for application from late autumn to early spring, Enforcer provides a robust nutrient foundation that supports plant growth throughout the colder months when nutrient uptake can be challenging. Its high calcium content is especially beneficial for soil structure, helping to improve water infiltration and aeration, which are crucial for healthy root development.

Farmers and growers looking for a sustainable fertiliser option will find Enforcer to be an excellent choice. Its slow-release properties mean fewer applications are needed, reducing labour costs and environmental impact. By using Enforcer, farmers can maintain high yields and healthy crops while contributing positively to the environment by minimising runoff and nutrient leaching.

Profile Fertilisers is committed to advancing agricultural practices that protect both yield and the environment. Enforcer is a testament to this commitment, offering a powerful yet sustainable solution that meets the needs of modern agriculture. Choose Enforcer for your crops and contribute to a healthier, more sustainable farming future.

Contact Profile Fertilisers

Don Henderson: 021 643 698

donh@profilefert.co.nz

www.profilefert.co.nz

Contact Phillip Quay

Media PA

phillip@mediapa.co.nz

027 458 7724

www.mediapa.co.nz

Soil structure plays a pivotal role in determining the agricultural productivity and sustainability of New Zealand’s diverse landscapes. Dr. Gordon Rajendram, a leading soil scientist, examines how the structural integrity of soil affects everything from water retention and drainage to root development and nutrient uptake. Understanding these differences is crucial for effective farm management and long-term soil health.

In New Zealand, soil structure varies significantly not only between the volcanic soils in regions such as Waikato and Taranaki, and the sedimentary soils found predominantly in areas like Canterbury but also across other soil types such as peaty soils in wetter regions and clay soils in drier areas. Volcanic soils benefit from a loose, porous structure due to the presence of allophane, a mineral that not only enhances soil stability but also aids in significant carbon storage, with carbon levels reaching 10-12%, thereby enriching the soil’s organic content. This structure promotes excellent water retention and nutrient availability, making these soils ideal for high-demand agricultural activities, such as dairy farming.

Conversely, sedimentary soils present different challenges. Dr. Rajendram explains, “Sedimentary soils tend to be denser and can suffer from compaction more easily, which reduces aeration and negatively impacts root penetration and moisture permeability.” These soils typically have lower organic matter content, generally around 3-5% carbon, making them more prone to degradation. which can lead to faster degradation and fertility loss over time if not managed correctly.

Peaty soils, while excellent for specific horticultural uses due to their high organic matter content, require careful water management to prevent over-saturation, which can suffocate plant roots. Similarly, clay soils, known for their ability to retain water, are advantageous in drier regions but can become hard and crack when dry, posing challenges for root growth and soil aeration.

Effective management practices are essential for maintaining the health of all these soil types. Dr. Rajendram highlights that strategies such as regular soil testing, appropriate crop rotation, and the careful application of organic amendments are vital. For volcanic soils, maintaining the structural integrity involves minimal tilling and controlled grazing to prevent compaction. For sedimentary soils, improving structure may involve more frequent organic matter addition and careful water management to avoid surface crusting and compaction.

Dr. Rajendram emphasises that by tailoring farming practices to the specific type of soil structure, New Zealand farmers can enhance productivity and ensure the sustainability of their valuable agricultural lands.

 Contact Dr Gordon Rajendram

021 466077

rajendram@xtra.co.nz

www.gordonrajendramsoilscientist.co.nz

Contact Phillip Quay

phillip@mediapa.co.nz

027 458 7724

www.mediapa.co.nz