1、Effects of nitrogen and irrigation on the quality of grapes and the

A common cultural practice is to incorporate nitrogen fertilizers in the soil surface at the end of winter, a period in which the vine needs in nitrogen are negligible. This results in excessive leaching of nitrogen by the leached water.

2、Understanding and managing nitrogen nutrition in grapevine: a review

Over the past decades, the application of N in vineyards has been reduced with the aim of adjusting vigour and yield. Moreover, the development of cover cropping has led to vines competing for N resources, which can be detrimental to the crop in some cases.

3、Organic nitrogen fertilization minimizes requirement of inorganic

Abstract Purpose: Nitrogen (N) fertilization is the essential nutrient element that limits crop yields before any other element. However, excessive use of N fertilization often leads to economic loss and quality deterioration of the yield.

4、(PDF) Effects of the Annual Nitrogen Fertilization Rate on Vine

Sustainability in grapevine cultivation requires the precise use of water and fertilizers, particularly nitrogen (N), to produce grapes of the highest quality for winemaking, while...

5、Does excessive nitrogen fertilizer in grapes cause fruit cracking? Why?

Grapes are plants with high soil nutrient requirements, and nitrogen fertilizer is an indispensable nutrient during their growth. excessive application of nitrogen fertilizer not only fails to improve fruit quality but also negatively impacts grape growth and ripening.

Nitrogen Management in Vineyards

In contrast, high N availability can lead to excessive grapevine vigor resulting in greater canopy management costs, increase the incidence of fungal diseases, and reduced fruit quality.

Methods for Managing Nitrogen Fertilization in Grapes

Grapes are plants with a high demand for nitrogen, making nitrogen fertilizer essential during their growth. Proper nitrogen application promotes development, improves fruit quality, and increases yield. excessive nitrogen can lead to overgrowth, reducing fruit quality and productivity.

Nitrogen fertilisation.indd

However nitrogen fertiliser should be applied to vines carefully as excessive availability of nitrogen increases shoot growth at the cost of fruit development. Over supply of nitrogen can also delay fruit maturity and may result in poor bud fruitfulness in the following season.

Grapevine Fertilization – Timing, Formulas, and Methods

Grapevines require different nutrients at different growth stages – timing is as important as content. Excess nitrogen reduces fruit quality by promoting excessive foliage and delaying ripening. Potassium and phosphorus are critical for berry development, sugar accumulation, and root strength.

Grape Grower's Handbook: A Guide To Viticulture for Wine Production

Grapevines use nitrogen to build essential compounds including proteins, enzymes, amino acids, nucleic acids, and pigments including chlorophyll and anthocyanins of fruit. Nitrogen tends to be the nutrient most frequently deficient in the vineyard.

Grapes are plants that thrive with nitrogen fertilizer, but excessive application can lead to their death. Below is a detailed explanation:

First, nitrogen fertilizer is an essential nutrient for grapevine growth, promoting development and vitality. Nitrogen provides the necessary element for photosynthesis, protein synthesis, and lipid production, which supports growth and fruit development. During the early growth stage, proper nitrogen application accelerates development and advances the vines into the fruiting period.

overuse of nitrogen fertilizer can be fatal. Excessive nitrogen damages root systems, impairing water and nutrient absorption. It also increases nitrate accumulation in leaves, causing yellowing or death. Additionally, surplus nitrogen in soil leads to ammonia volatilization, polluting the air and posing health risks. Thus, controlling nitrogen levels is critical for environmental and human safety.

Second, grapevines’ nitrogen needs vary by growth stage. Early growth requires higher nitrogen, while fruiting demands less. Fertilization should align with these phases: apply moderately during early growth to boost development, then reduce nitrogen later to avoid compromising yield or fruit quality.

grape varieties differ in nitrogen requirements and absorption. Early-maturing varieties typically need more nitrogen than late-maturing ones. Selecting locally adapted varieties and tailoring nitrogen based on their specific needs ensures optimal results.

Lastly, nitrogen uptake depends on soil conditions. Factors like organic matter content, pH, and temperature influence absorption efficiency. Adjusting soil environments—such as balancing pH or improving organic matter—enhances nitrogen utilization.

while grapes benefit from nitrogen, excess application is detrimental. To ensure healthy growth and productivity, fertilize judiciously, match nitrogen levels to growth stages, choose suitable varieties, and optimize soil conditions.