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A fractional factorial experiment was designed to study the response of greenhouse-produced muskmelon root system to 3 levels of sub-surface drip irrigation in combination with drip-tubing placed at 3 different depths in the soil, and 4 frequency levels of supplemental soil aeration. Drip irrigation (I) levels were 70, 80, and 90% of field capacity (I70, I80, I90) in combination with sub-surface tubing...
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