Raisins

The grape continuously absorbs nitrogen from bud break to ripening, and its greatest need is at three time points: firstly, when active growth restarts, after bud break; secondly, at flowering, whereupon it is frequently found that the nitrogen is not readily available at that time; finally, a third period where nitrogen is very important is when the fruit begins to grow rapidly.

Furthermore, it attenuates the effects of excess nitrogen and acts on maturation, as well as making the branches stronger. It also decreases the susceptibility to cryptogamic diseases.

Phosphorus is considered to be a quality factor in vineyards that helps to produce balanced musts and intense uptake occurs from germination to flowering. It is also considered to be a regulator of plant development and it plays a role in fruit evolution. Phosphorus also promotes the development of roots and is therefore an essential factor in terms of enabling the plants to settle in the first few years after planting.

Therefore, it helps to increase sugar content and hence alcohol content. It also helps to promote the storage of reserves in different parts of the plants.

Potassium plays a role in crop vigor and yield, and it contributes to the neutralization of formed organic acids. It also promotes respiration and activates growth. This is an important health factor for plants because it facilitates the proper distribution of reserves between different parts of the plant. It intervenes in the regulation of the opening and closing of stomata, it plays a role in improving drought resistance via better water use efficiency, ensuring an improvement in the functioning of the stomata.

Potassium promotes the setting and advances the ripening of the grapes. In addition, it is an element of protection against frost. By intervening in the salification of tartaric acid, it is responsible for the increase and control of the pH of the must.

In wine grapes, a potassium deficiency (corresponding to less than 0.5% potassium in the leaf dry matter) will lead to a reduction in the alcohol level of the wine and it will also weaken the plant. Meanwhile, in table grapes, potassium deficiency will lead to a reduction in the sugar content of the fruit and it will also weaken the vine.

Sulfur is also a major component in Thiols. These are any of a number of different compounds with the general formula RSH and which are analogous to alcohol but in which sulfur replaces the oxygen of the hydroxyl group. Thiols and sulfur are strongly linked to the taste and aroma of fruit and wine.

Calcium is the dominant element of the intracellular buffer that regulates the pH of the cellular fluid.

Calcium has an important function with other cations (potassium and magnesium) in the neutralization of organic acids and in terms of ensuring the stability of the cell walls. It also participates in various enzymatic reactions.

Its deficiency appears as chlorosis on the old leaves at the base of branches, which can fall prematurely and cause the appearance of secondary branches. Symptoms are more pronounced on leaves situated close to clusters.

Grape bunches appear less compact and are characterized by significant weight loss. Deficiency occurs by impairment, as well as by antagonism, with calcium and potassium. Magnesium deficiency can occur with light, acidic soils that are prone to leaching or in soils that have received high doses of potassium fertilizers.

Each litre of Thio-Sul provides approximately 160 g of nitrogen and 346 g of sulfur, delivering a concentrated and efficient source of both nutrients. Its liquid formulation is easy to handle and integrates readily into modern crop nutrition programmes across a wide range of crops and production systems.

By supplying nitrogen and thiosulfate sulfur together, Thio-Sul helps maintain an appropriate nitrogen-to-sulfur balance, supports protein formation and promotes more efficient use of applied nitrogen. Its sulfur becomes available progressively as thiosulfate is converted in the soil, helping support crop nutrition throughout key growth stages.

Thio-Sul can be applied through irrigation systems, banded, broadcast, injected into the soil or incorporated into compatible liquid fertiliser blends. This application flexibility makes it a practical solution for improving sulfur nutrition and complementing nitrogen fertilisation.

Each litre of KTS supplies approximately 360 g of potash and 252 g of sulfur, providing a highly concentrated source of soluble potassium and sulfur. Its nitrate-free and chloride-free formulation allows potassium to be supplied without adding unnecessary nitrogen or chloride.

Potassium supports water regulation, enzyme activity, carbohydrate transport and the development of crop yield and quality, while sulfur contributes to protein and enzyme formation. KTS is particularly valuable during periods of rapid growth, reproductive development and crop filling, when potassium requirements can increase substantially.

KTS can be used through fertigation, in starter or side-dress programmes, in compatible liquid fertiliser blends and as a foliar treatment on selected crops. Its versatility allows potassium and sulfur to be delivered at critical stages within a wide range of crop nutrition programmes.

Each litre of CaTs supplies approximately 75 g of calcium and 125 g of sulfur, providing both nutrients in a fully soluble liquid form. CaTs combines crop nutrition with soil-management benefits and can be incorporated into a broad range of fertilisation programmes.

Calcium contributes to cell-wall strength, root development and the structural integrity of growing plant tissues, while sulfur supports protein and enzyme formation. A consistent calcium supply is especially important during periods of rapid vegetative growth and fruit development, helping support crop quality, firmness and marketability.

CaTs can be applied through irrigation systems, banded, broadcast or blended with compatible liquid fertilisers. It may also be used as a soil amendment to provide soluble calcium, support soil aggregation and water infiltration, and help manage the effects of excess sodium in saline or sodic soils.

Its fine crystalline formulation dissolves rapidly and completely, producing a clean spray solution with minimal residue. This makes K-Leaf particularly suitable for precision spraying and for situations in which crops require a rapid supplementary supply of potassium and sulfur.

Applied directly to the foliage, K-Leaf helps prevent or correct potassium and sulfur deficiencies during critical growth stages. Potassium supports water regulation, photosynthesis, carbohydrate movement and crop quality, while sulfur contributes to protein synthesis and essential metabolic processes.

K-Leaf can supplement soil fertilisation when nutrient uptake through the roots is restricted or when crop demand temporarily exceeds soil supply. It is suitable for a wide range of broad-acre, fruit and vegetable crops and can be combined with many compatible soluble fertilisers and crop-protection products following a compatibility test.

SoluPotasse provides potassium and sulfur without nitrogen or chloride, allowing both nutrients to be managed independently within the crop nutrition programme. Its fine crystalline form dissolves rapidly and completely, making it suitable for demanding fertigation applications.

Potassium supports water-use regulation, enzyme activation, carbohydrate transport and crop quality, while sulfur contributes to protein formation and nutrient metabolism. SoluPotasse is particularly useful when crops require additional potassium but no further nitrogen, including during fruit, tuber and grain development.

SoluPotasse can be applied through fertigation and other systems designed for fully soluble fertilisers. Its low-chloride, nitrogen-free composition makes it well suited to chloride-sensitive crops, saline growing conditions and fertilisation programmes requiring precise control of nitrogen and potassium inputs.

The chloride-free, nitrogen-free formulation of GranuPotasse provides an efficient source of potassium and sulfur, making it ideal for chloride-sensitive crops and high-value production systems. The uniform, free-flowing granules ensure accurate spreading, easy handling and consistent field performance.

By supplying potassium and sulfur in readily available forms, GranuPotasse supports water regulation, enzyme activation, carbohydrate transport and protein synthesis, helping improve crop yield, quality and marketability. It is particularly beneficial for fruit, vegetable and other high-value crops where crop quality, storage life and export potential are essential.

GranuPotasse® is suitable for pre-plant, basal and in-season applications and can be broadcast, banded or incorporated into the soil. It also blends readily with many granular fertilizers, providing growers with a flexible solution for balanced potassium and sulfur nutrition across a wide range of cropping systems.