North Dakota State University: Agricultural and Biosystems Engineering Dept.

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Our project titled the "Effect of Optimal Water Management for Sustainable and Profitable Crop Production and Improvement of Water Quality in Red River Valley" is funded through the Sustainable Agricultural Research & Education (SARE) grant.

Monday, March 16, 2015

Infiltration Test in Frozen Soil

PhD. student Debjit Roi started the infiltration test in frozen soil. This experiemnt will be carried out in our lab, of which the moisture and tempertaure of the frozen soil are monitored and controlled.

Wednesday, March 4, 2015

Maintaining Three Wireless Weather Stations in the Fields

The wireless weather station in a subsurface irrigation (SI) field. It measures photosynthetic active radiation (PAR), air relative humidity (RH) and temperature, rainfall and soil moisture and temperature at 5 cm, 15 cm and 30 cm below surface.

The wireless weather station in a free drainage (FD) field. It measures photosynthetic active radiation (PAR), air relative humidity (RH) and temperature, rainfall and soil moisture and temperature at 5 cm, 15 cm and 30 cm below surface or wind direction and speed.

The wireless weather station in a undrained (UD) field. It measures photosynthetic active radiation (PAR), air relative humidity (RH) and temperature, wind direction and speed, gust speed and soil moisture and temperature at 5 cm, 15 cm and 30 cm below surface.

Effects of Waterlogging on Wheat Seed Germination

The waterlogging experiment has been carried out in a greenhouse. There are one regular planting as control and four plantings waterlogging treated of one, three, five and seven days respectively. Six different types of wheat seeds have been planted in each tote.

The oxygen level in the water has been monitored by a CS511-L dissolved oxygen sensor with a CR1000 datalogger, both from Campbell Scientific, Inc.

The plant comparison of control and waterlogging treatment is shown above. The control is in the leftmost. To the right, the plants are waterlogging treated of one, three, five and seven days respectively. 

Agricultural Survey Measuring Soil Salinity

A Geonics EM38-MK2 Ground Conductivity Meter was tested in the field.

The ground conductivity mapping was implemented using a customized EM38-MK2 system as shown above. The signals were transmitted to and recorded in a Trimble Juno 3 Series Handheld GPS for further analysis.

Estimating Crop Yields

Dr. Xinhua Jia and PhD. student Debjit Roy harvested soybean for yield estimation.

Graduate student Hannah Bye used Mini GAC Plus Tester to measure the moisture and test weight for yield estimation.

Friday, January 30, 2015

Maintaining Sensors in the Field

PhD student Debjit Roy checked the current sensor and downloaded data. The current sensor is used to monitor the drainage and irrigation flow. 

Tuesday, December 2, 2014

Measuring the Snow Depth in the Field

A sonic ranging sensor (SR50A-L, Campbell Scientific Inc.) was installed to measure the accumulated snow depth in the field. It was used to monitor the water level in the ditch for subsurface drainage and water quality related research last year. 
A camera (BirdCam WSCA02, WINGSCAPES) was also set up nearby to monitor the field conditions on a daily basis.