Question 8 of 17intermediate🔍 AnalyzeShort Answer3 marks

List three key challenges you faced during the construction and maintenance of the system. What will you do differently next time?

Correct Answer

Three key challenges in DWC system construction and maintenance include:

  1. Ensuring adequate dissolved oxygen for healthy root growth - this requires a functioning aerator; brown roots indicate oxygen starvation.

  2. Preventing algae growth in the water reservoir - covering the water surface with styrofoam sheet prevents sunlight entry and algae formation.

  3. Maintaining proper water level - water should just touch the base of the net pot for optimal plant growth.

For future improvements, ensure regular aerator checks, use algae-prevention measures, and monitor water levels consistently.

Exercise: Activity 4: Building a hydroponic system using Deep Water Culture (DWC) | Q: 1 | (Page Page 21)
For More Understanding

Explanation

The chapter on Page 21 explains that healthy roots should be white, and brown roots indicate lack of dissolved oxygen. It also mentions that covering water surface with styrofoam prevents algae growth by blocking sunlight. The water level should touch the base of the net pot.

Solution Steps

  1. Ensuring adequate dissolved oxygen for healthy root growth requires a functioning aerator

  2. Brown roots indicate oxygen starvation

  3. Covering water surface with styrofoam sheet prevents algae growth by blocking sunlight

  4. Water level should just touch the base of the net pot for optimal plant growth

  5. Future improvements: regular aerator checks, algae-prevention measures, and consistent water level monitoring

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