Top fruit flavor and taste are related to the level of soluble solids in the fruit, which are mainly sugars. Total Soluble Solids (TSS) is therefore of extreme importance to measure the quality of top fruit. Referred to as oBrix, TSS is assessed by refractometry or near-infrared spectroscopy and can be used to check fruit maturity and ripeness, important to determine harvest timing. A balanced crop nutrition can influence TSS content of fruit.
Crop Nutrition and Top Fruit TSS Content
Nitrogen and Potassium
Nitrogen has a positive effect on the soluble solids content of apples and pears. Potassium also plays an important role on sweetness, measured by oBrix, as shown in trials in India. °Brix is used to approximate the TSS content because the soluble sugars usually represent more than 75 - 85% of the soluble solids.
Magnesium
Apple acidity is a relevant characteristic for both fresh and processing markets. It is one of the main group compounds determining flavour. The higher the level of acidity, the more tart the flavour and the better the thirst-quenching properties of processed soft drinks.
12-4.8-14.9 + 8% S - Prilled NPK fertilizer which also contains magnesium and sulphur as well as micronutrients ideal for use on a wide range of arable and horticultural crops.
A fully formulated flowable liquid micronutrient fertilizer containing 700 g/l zinc for foliar application to prevent and treat zinc deficiency on a wide range of crops.
A liquid micronutrient fertilizer containing 150 g/l boron for foliar application to provide additional boron or to treat boron deficiencies in a wide range of crops.
A liquid micronutrient fertilizer containing high concentrations of phosphate and calcium for foliar application to improve yield and quality in fruit and potatoes.
A liquid micronutrient fertilizer containing 160 g/l calcium for foliar application to control and reduce calcium related disorders in top fruit and other crops.
A flowable liquid suspension fertilizer with nutrients and micronutrients including magnesium, zinc, nitrogen, boron and phosphate for foliar application to improve the flowering of top and soft fruit.
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