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Agronomy
Volume 12
Issue 2
10.3390/agronomy12020357
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Article
Peer-Review Record

Strategies to Reduce Crop Water Footprint in Intensive Wheat-Maize Rotations in North China Plain

Agronomy 2022, 12(2), 357; https://doi.org/10.3390/agronomy12020357
by Di Zhang 1,2,3,4,†, Dongxiao Li 1,†, Haoran Li 1, Hongguang Wang 1, Jinna Liu 2, Hui Ju 4, William D. Batchelor 3, Ruiqi Li 1 and Yanming Li 1,*
Reviewer 1: Anonymous
Reviewer 2:
Sarfraz Hashim
Agronomy 2022, 12(2), 357; https://doi.org/10.3390/agronomy12020357
Submission received: 2 January 2022 / Revised: 22 January 2022 / Accepted: 29 January 2022 / Published: 31 January 2022

Round 1

Reviewer 1 Report

The authors presented a comprehensive study on an important problem
related to the optimization of water consumption (water footprint) and nitrogen fertilization in the production of two
very important species of cereals: winter wheat and maize.
The authors conducted field research and simulations using the DSSAT
model. Many years of field research (7 years) are the strengths of the
presented work, which has become less and less frequent in recent
times, as such research is very expensive and needs a lot of work.
The work written correctly, in good language, research methods selected
in good way,results presented in clear manner, rich literature included.
A small corrections and explanations are needed which are marked at the
body of the manuscript.
 

Comments for author File: Comments.pdf

Author Response

Dear Editors,

 

Thanks very much for your kind work and consideration on publication of our paper. On behalf of my co-authors, we would like to express our great appreciation to you and reviewers.

We have studied the comments carefully and have made correction which we hope meet with approval. Revised portion are marked in red in the paper. The main corrections in the paper are as follows:

 

 

 

Reviewer 1

  1. Line132: what was the size of the single plot?

Response: Thanks for your comment. We have added the plot size in the manuscript. Please see line 133.

 

  1. Line133: Please add the information about irrigation method was used....

Response: We have supplemented the irrigation method. Please see line 134.

 

  1. Lin143: What kind of method of irrigation was used?  single irrigation doses are huge...

Response: Thanks for this valuable question. The border irrigation was adopted in this research. The single irrigation doses 70~80 mm was common in North China Plain as depicted in reference [43] and [44].

Reviewer 2 Report

I appreciated the the efforts of the authors that a seven-year rotation experiment was conducted to collect data on wheat and maize 19 growth response to nitrogen rates and irrigation schedules and to explore how the water footprint was affected with DSSAT 4.6 Wheat and Maize crop models. The following points may be considered to improve the draft.

  1. The pixels of the figures needs to improve for the proper visibility.
  2. The color of the graphs in results may changed to differentiate the parameters.
  3. Latest DSSAT v4.7.5 available, why 4.6 used for current study
  4. Line 201 may rewrite and subscript word "green" 
  5.  Table-4, Comparison of observed and simulated grain yields for winter wheat and 280 summer maize from 2006 to 2013 may recheck, some data for both crops are mismanage to compare with full and limited irrigation.

Author Response

Reviewer 2

  1. The pixels of the figures needs to improve for the proper visibility.

Response: Thanks for this valuable comment. We changed the pixels of the Figure 6.

 

  1. The color of the graphs in results may changed to differentiate the parameters.

Response: Thanks for your comment. We have changed graphs colors to differentiate water footprint of wheat and water footprint of maize. We want to know whether this changing is appropriate or not. Please see Figure 3 and Figure 4.

 

  1. Latest DSSAT v4.7.5 available, why 4.6 used for current study

Response: This work was done several years ago and V4.6 was the latest available. DSSAT v4.6 is still widely used around the world. There have been no changes in v4.7 that would affect these results.

 

 

  1. Line 201 may rewrite and subscript word "green" 

Response: We are very sorry for this mistake. We have corrected it. Please see line 202 and line 204.

 

  1.  Table-4, Comparison of observed and simulated grain yields for winter wheat and 280 summer maize from 2006 to 2013 may recheck, some data for both crops are mismanage to compare with full and limited irrigation.

Response: Thanks for this valuable comment. We have rechecked it and the data have been published on the references [43] and [44]. And reference [43] have analyzed that yield level of wheat and maize was influenced by different regions and different rainfall year type.

Additionally, we have corrected some formal mistakes in reference list.

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