Effect of Greenhouse Cladding Materials and Thermal Screen Configuration on Heating Energy and Strawberry (Fragaria ananassa var. “Seolhyang”) Yield in Winter

Round 1

Reviewer 1 Report

Dear Authors

I have gone through the manuscript "Effect of greenhouse glazing materials and thermal screen configuration on heating energy and strawberry (fragaria ananassa var. seolhyang) yield in winter". It is well written, but I have some queries to ask and improve the manuscript.

1. Please specify the objectives clearly in points  (Page 3 just before materials and methods).
2. The original photograph of the experimental setup must be included in the manuscript. 
3. The cost analysis should also be added to the manuscript. 
4. The statistical analysis equations must be a part of the manuscript.
5. In conclusion point no. iii The thermal screen obstructed SR in both greenhouses during the day; thus, it is recommended to investigate another retraction method.  If some other thermal screen is to be investigated, then there is no use of the thermal screen used in the experiments. And what is the significance of the thermal screen used in the manuscript. 

 

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

The work deals with an interesting subject worth investigating. However, the choice of the greenhouses for the experimental trial is wrong. Indeed, one of the greenhouses is subjected to shadowing of near buildings, so that the solar radiation values are significantly different in the two greenhouses (lines 293-301). Furthermore, the comparison of fig.1 and fig.2 show a different roof vent, making the results not comparable.

Other minor findings:

• Define SR in the introduction
• What is the thickness of the PE film? 50 microns (line 152) or 150 microns (fig.2)?
• What about the IR barrier of the films? It is the most important parameter to evaluate the night performance.
• The position of the PE film is not clear. Please draw it in fig.2
• The system used for retracting the thermal screen is not clear. This detail is important, as heavily influenced SR results.
• Fig. 4 show two SR sensor, whereas in the results you have 3 positions (south, center, north)
• Write the model(s) of datalogger(s) used.

Author Response

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Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Thanks

Author Response

Dear Esteemed Reviewer,

Thank you for review.

Reviewer 2 Report

The answers given by the authors regarding the choice of two different greenhouses are not sufficient. What they themselves affirmed, namely that "without the shading effect, more SR would have been
received by the SLGH and that might have made the yield
much higher than the yield in DLGH.", attests that the test cannot return reliable values. I do research in this area and I understand the logistical difficulties in finding suitable experimental fields, but unfortunately general principles, such as the comparability of results starting from identical conditions, cannot be derogated from.

Author Response

Dear Reviewer, 

Please see the attached file.

Author Response File: Author Response.pdf