applications - avocado

Recommended Application in Cotton

BACKGROUND

 

Cotton is a soft, fluffy staple fiber that grows in a boll, or protective capsule, around the seeds of cotton plants of the genus Gossypium. The fibre is almost pure cellulose. The botanical purpose of cotton fiber is to aid in seed dispersal.
 
The plant is a shrub native to tropical and subtropical regions around the world, including the Americas, Africa, and India. The greatest diversity of wild cotton species is found in Mexico, followed by Australia and Africa. 
 
Current estimates for world production are about 25 million tonnes annually, accounting for 2.5% of the world's arable land. China is the world's largest producer of cotton, but most of this is used domestically. The United States has been the largest exporter for many years. 
 
 

PYHTOMONITORING IN COTTON

One of the main elements of the cultivation of cotton is it’s precise irrigation. The most common method of irrigation management is the monitoring of climatic and soil moisture conditions. From the data of evapotranspiration and soil moisture a farmer can decide on the adjustment of his irrigation regime. However, the constantly changing conditions cause some uncertainty in the planning of irrigation. Therefore, farmers require a modern technology to more efficiently and accurately manage the irrigation regime.
 

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Recommended set-up for 5 hectars

Plant sensors:

Stem and trunk Diameter Variation  Sensor - 1

Monitors micro-variations of stem diameter in micron range.
This sensor is a highly precise incremental LVDT-based sensor. Plant growth and water balance affect diurnal behavior of stem diameter. The growth rate depends on a vegetation stage and environmental conditions. The diurnal variations represent mostly fluctuations of water content in plants. Two diameter-based indices are commonly used for evaluating plant water status: daily contraction amplitude and trend of daily maxima.

Range of measurement: 0 - 5 mm
Resolution: 0.005 mm
Temperature stability: 0.003 mm/c° max.
Suitable stem diameter range: 5 - 25 mm
Suitable trunk diameter range: 2 – 7 cm

 
 

Soil sensors:

Tensiometer sensor

Tensiometer Sensor - 2

Measures water tension in the soil
Pipes length: 30 cm, 60 cm, 90 cm
Measurement range: 0 - 84 cBar
Temperature range: 0-40 C
soil Moisture Sensor

Soil Moisture Sensor - 2

Monitors the volumetric water content (VWC) of the soil
Comes with 5cm two prong design 
Measurement Range 0-70% moisture
 

Environmental sensors:

weather station

Phytechs Weather station

Including 6 sensors:
1. Wind Speed meter.
2. Wind Direction (optional: Leaf wetness)
3. Rain Meter.
4. Irradiation meter.
5. Air temperature.
6. Air humidity.
   
   

Success Stories

 

     
     

 

Presentations

 

     
     

 

Articles

 

Phytomonitoring    
     

 

Related Links

 

Winter Irrigation | 2009    
     

 


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