Site-specific liquid fertilization: achieve maximum grain yields!

8.4.2021

Apply fertilizer

The lap phase is the perfect time for site-specific liquid fertilization. With the right knowledge of the state of your crops and the combination of modern application technology and clever sensors, you can not only secure your yields, but also increase them. We'll tell you how it works here.

ISARIA Pro Active

Nitrogen (N) is one of the five essential bulk elements and is responsible for plant growth and development processes as well as yield formation. To enable your plants to grow optimally, nitrogen is one of your tools for success. As a component of chlorophyll, nitrogen controls photosynthesis in plants and is responsible for the green color. Why is that important? Thanks to this function, you can optimize your fertilization using optical sensor technology. The advantages of site-specific applications are obvious — with the balanced fertilization strategy, you ensure a homogeneous stock. With the profit-oriented strategy, you ensure that your earnings potential is optimally exploited in inhomogeneous strokes.

How to: nitrogen fertilization

For your wheat farming, you should keep an eye on the three most important sources of N. The first dose is initial fertilization and is carried out in spring immediately after dormancy. It has a direct influence on biomass growth and shooting. An early first N dose (before BBCH 25) ensures a high degree of filling at all sites. A late first dose (from BBCH 25) can promote the formation of the resulting shoots into spice-bearing stalks. The aim is to create a stock with as many strong shoots as possible at the start of the lap (BBCH 30) as the plant can keep later in growth. The second N dose is given at the start of the lap (BBCH 30-32). An optimal, demand-oriented supply of nitrogen to your stock is important here, because a lack of nitrogen during this growth phase means that too few shoots are set up into spice-bearing stalks. You should apply the third dose of N to soils that have enough water to open the last leaf (BBCH 37-49). Here, a renewed supply of N influences the formation of storage cells in the grain. This dose therefore has an effect on the thousandgrain weight, the hectoliter weight, the number of cases, the protein content and other quality criteria of your stock. Depending on location and water availability, this dose can also be divided into two doses. When the third dose is divided into 2 doses, good water availability is essential for the effectiveness of this strategy.

IMPORTANT: In order to distribute the total amount of fertilizer, it must always be considered that the stock may only plant as well as set up as many spice-bearing stalks in youth development as can be established later on the basis of the amount of fertilizer still available.

How to improve your lap yield for efficiency with liquid fertilization

As you can see: To increase and secure your income, a targeted N dose is useful. Liquid mineral fertilizers such as AHL (ammonium nitrate urea solution) are well suited for application of fertilizer to shoot. When liquid fertilizing this nitrogen fertilizer in the second dose, it is recommended to use special liquid fertilizer nozzles or drag hoses on the field sprayer to avoid burns on the leaf. To avoid storage areas in your inventory, you should also rely on site-specific fertilization here. Combined with applying your fertilizer, you can with ISARIA PRO Active Credit your inventory and perform an N uptake scan. As soon as the ISARIA plant sensor is switched on, it emits light in the near infrared to infrared range. The radiation reflected by the plants is then measured — the system therefore has its own light supply and is not dependent on sunlight. This is followed by a location-specific calculation of the application quantity and transmission to your deployment device. This means that all areas are fertilized as needed, even in the case of highly inhomogeneous areas. To optimally supply your inventory, you can choose between two measurement variables:

Among other things, the ISARIA system works in crops:

By the way: You can also use your ISARIA system according to the map overlay principle, which means a combination of a historical yield potential card (EPK) and the current N recording in the inventory (sensor measurement) during deployment. This also gives you the opportunity to incorporate experience, e.g. from yield maps or satellite data, into your fertilizer application.

Site-specific liquid fertilization: Diverse use in all crops

The use of growth regulators is just as important as fertilization. Site-specific liquid fertilization makes particular sense here. Uniform spraying of growth regulators leads to yield losses in areas with poorer plant populations on sandducks or on forest edges. The amount used at these locations is too high for the comparatively poor plant population and inhibits natural plant growth too much. At the same time, you save money with biomass-based spraying.

However, you can not only use ISARIA PRO Active Spray for N fertilization or the use of growth regulators. Our sensor is also used for fungicide applications on grains, herb rot treatment on potatoes, weed spraying on potatoes, biomass-dependent siccations and much more.

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