agri tools
Post on 16-Aug-2015
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A tensiometer is a hollow tube with a porous ceramic cup at one end The tube is filled with water and sealed with a cap. Some tensiometers have an attached Bourdon vacuum gauge. Others come with an electronic vacuum gauge that can be transferred from one tensiometer to another
.
Install one or two stations for each crop of the same age and variety. Crops planted on different sides of a hill should each have at least one tensiometer station installed in them. When a crop is planted in an area with more than one soil type, set up at least one station within each soil type.
Ensure that the position selected for a tensiometer station is a site where irrigation application is representative of the whole field. Ideally, you should check the operating pressures, water output and water distribution of sprinklers, so that you can choose the best possible site.
Anemometer, wind speed, weather measurement
wind vane, wind direction, weather measurement
Barometer, air pressure, millibars, weather measurement
Rain gauge, precipitation, weather measurement
Hygrometer, humidity, atmospheric moisture, weather measurement
In 1961, P.E. Skaling (Soilmoisture's founder) and Dr. George H. Wagner, of the University of Missouri, fashioned the first suction lysimeter. The suction lysimeter was a cylindrical device consisting of a porous ceramic cup (to withdraw soil pore water); a body tube to act as a reservoir; and a simple stopper assembly with a single hole for pulling a vacuum and retrieving the sample. These early suction lysimeters allowed pore water to be "pulled" from unsaturated soils near the soil surface
.• Neutron probe is a device used to measure the
quantity of water present in Soil.• A typical neutron probe contains a pellet
of americium-241 and beryllium. The alpha particles emitted by the decay of the americium collide with the light beryllium nuclei, producing fast neutrons. When these fast neutrons collide with hydrogen nuclei present in the soil being studied, they lose much of their energy. The detection of slow neutrons returning to the probe allows an estimate of the amount of hydrogen present. Since water contains two atoms of hydrogen per molecule, this therefore gives a measure of soil moisture.
.• Soil moisture measuring system with gypsum blocks The soil moisture meter can be used in combination with soil moisture blocks (relatively cheap gypsum blocks). The soil moisture content is determined by measuring the resistance between two electrodes inside the gypsum blocks. The condition for reliable measurements is the optimal contact between sensor and soil.
• The gypsum blocks are permanently buried in the soil at the desired depth. Once buried there the blocks have a life of 3 to 5 years (depending on the type of soil).
Why measure chlorophyll?
Chlorophyll is the green pigment that allows plants to photosynthesize. This process uses sunlight to convert carbon dioxide and water into the building blocks of plants. Because nitrogen is a part of chlorophyll, by measuring chlorophyll, one can indirectly measure the amount of nitrogen in the plant. This allows for more efficient scheduling of fertilizer applications.
Trigger-
Sprayer
Variations of sprayers
Hand-
Compression
Sprayer
Knapsack-
Sprayer
Stainless Steel-
Compression
Sprayer
Engine
Sprayer
Hollow cone pattern
Uniform coverage (Full cone)
Full jet spray pattern
Flat spray pattern (Fanjet) Tapered edges
Full coverage edges
Spray pattern
Application Nozzle Type Application l / ha spay volume at 50 cm reach *
Spray ApplicationCone
(full or hollow)
Fanjet DeflectorPress
ure (bar)
Wind speed(m/s)
Iso Düse015
Iso Düse
02
Iso Düse 03
Iso Düse 04
Iso Düse 05
Herbizide,System Fungizide
Ground novery good
very good
1.0
0.8 0.34 l/min
1400.46 l/min
1900.68 l/min
280 0.91 l/min
370 1.14 l/min
460
1.0 110 150 230 300 370
Kontakt Fungizide,Insektizide
Groundvery good
very good
good 2.0
0.8 0.48 l/min
2000.65 l/min
2650.96 l/min
400 1.29 l/min
375 1.61 l/min
470
1.0 160 210 320 420 520
Kontact FungizideInsectizide
Tries and bushes
very good
good no 3.0
0.80.59 l/min
250 0.79 l/min
325 1.18 l/min
4901.58 l/min
6501.97 l/min
810
1.0 200 260 390 520 650
*) eine Strahlweite von 1 m halbiert das angegebene Sprühvolumen
A) Anwendung bestimmt den Düsetyp & Druck (prüfen via l/min) B) Geschwindigkeit festlegen C) Gewünschtes Sprühvolumen bestimmt die Düsengrösse
Nozzle and spray volume (for good performance and safety)
Birchmeier Sprühtechnik AG / 2007 ©
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