In tree crop production, harvest may signal the end of one season – but physiologically, it marks the beginning of the next.

The post-harvest pre-senescence period is a critical window when trees actively rebuild the nutrient and carbohydrate reserves which will drive growth, flowering, and yield in the coming season.

Even after fruit removal, trees remain metabolically active.

Leaves continue to photosynthesise, producing carbohydrates that are transported to roots, trunks, and woody tissues for storage.

At the same time, nutrients absorbed during this stage are also stored within the plant, forming a vital reserve pool that supports early spring growth before new leaves become fully functional.

Why this stage matters

Research across tree crops – such as apples, citrus, stone fruit, and nuts – shows a significant proportion of nutrients required for the next season comes from reserves accumulated after harvest.

Nitrogen and phosphorus are particularly important, contributing to budburst, early shoot development, and flowering.

Trees are also capable of absorbing a meaningful portion of their annual nutrient requirements during this period.

Nitrogen supports protein synthesis and canopy activity, phosphorus drives energy transfer and root function, while calcium and magnesium strengthen plant structure and resilience.

Micronutrients such as boron and zinc are equally critical, playing key roles in flower initiation and fruit set.

Without effective nutrient management during this window, reserve accumulation can be compromised – resulting in weaker growth, uneven flowering, and reduced productivity in the following season.

The role of canopy health

The success of post-harvest nutrition depends heavily on maintaining a healthy, active canopy.

Continued photosynthesis is essential for carbohydrate production and nutrient translocation into storage tissues.

Premature leaf drop, moisture stress, or nutrient deficiencies can limit this process.

In contrast, well-managed orchards which maintain green leaf area for longer are better positioned to build strong reserves and support consistent performance year after year.

Supporting trees with Kendon PFF Gold

Balanced nutrition is key during the post-harvest pre-senescence stage, and this is where Kendon PFF Gold offers a practical advantage.

Formulated with a balanced NPK ratio of 5:3:5 (% w/w), Kendon PFF Gold aligns well with the physiological needs of trees during reserve accumulation.

• Nitrogen (5 per cent) helps maintain chlorophyll activity and sustain photosynthesis
• Phosphorus (3 per cent) supports energy transfer and nutrient storage processes
• Potassium (5 per cent) assists with carbohydrate transport and metabolic regulation

In addition, Kendon PFF Gold contains EDTA-chelated magnesium along with key micronutrients such as zinc, boron, and molybdenum. These elements enhance foliar uptake and play an important role in building nutrient reserves that support flowering and fruit set in the following season.

Applied as a foliar spray while leaves are still active, Kendon PFF Gold allows for efficient nutrient absorption and utilisation during this short but highly influential window.

Practical benefits in the orchard

Incorporating Kendon PFF Gold into post-harvest nutrition programs can help:

• Maintain green leaf area and extend photosynthetic activity
• Improve carbohydrate production and storage
• Enhance nutrient reserve accumulation in roots and woody tissues
• Support tree recovery after harvest stress
• Promote more uniform budburst and early season growth
• Improve flowering potential and fruit set consistency

Investing in next season

The post-harvest period is not simply a wind-down phase – it is a strategic opportunity to influence the next crop.

Trees which enter dormancy with strong reserves are better equipped to deliver consistent yields and high-quality fruit.

By combining good canopy management with balanced foliar nutrition, growers can maximise this window and set their orchards up for success.

Kendon PFF Gold provides a targeted, balanced solution to support tree physiology during this critical stage – helping turn post-harvest management into a powerful investment in the season ahead