Article abstract

Journal of Agricultural and Crop Research

Research Article | Published December 2018 | Volume 6, Issue 6, pp. 110-115.

doi: https://doi.org/10.33495/jacr_v6i6.18.150

 

Regulation effects of water and nitrogen on potato dry matter and nitrogen accumulation and partitioning

 


 

 

Li Wen-ting1,2

Wang Shi-wen1,3*

Deng Xi-ping1,3

Yin Li-na1,3

Li Hong-bing1,3

 

Email Author
Tel: +86-29-87012872.

 

1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, P. R. China.

2. Institute of Agricultural Resources and Economics, Shanxi Academy of Agricultural Sciences, Taiyuan 030006, P.R. China.

3. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P.R. China.


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Citation: Wen-ting L, Shi-wen W, Xi-ping D, Li-na Y, Hong-bing L (2018). Regulation effects of water and nitrogen on potato dry matter and nitrogen accumulation and partitioning. J. Agric. Crop Res. 6(6): 110-115.

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 Abstract 


In order to maximize potato tuber yield and nitrogen uptake, it is important to optimize the management practices related to dry matter (DM) and nitrogen (N) accumulation and partitioning. To evaluate the effects of water and N level on DM and N accumulation and partitioning during the tuber bulking stage in the potato, a pot experiment was conducted with three water levels (90%, 70%, and 50% of field capacity) and three N levels (0, 85.5 and 171 kg N ha-1). The results showed that potato tuber yield and tuber N uptake were significantly affected by the water levels, N levels, and the interaction between water and N. Under the watered and moderate N conditions (90% of field capacity and 85.5 kg N ha-1), the tuber yield and N uptake were the highest. Watered conditions, moderate N conditions, and the watered combined with moderate N condition increased the tuber yield and tuber N uptake by increasing the accumulation of total DM and N in the plant, while not by increasing the partitioning of DM and N to tubers. Therefore, these results suggest that optimizing water and N management to improve DM and N accumulation is the key to ensuring high tuber yield and N uptake in the potato.

Keywords  Potato   water   nitrogen   dry matter   accumulation   partitioning  

 

 

Copyright © 2018 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

 

 

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