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Agronomy
Volume 12
Issue 2
10.3390/agronomy12020342
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Article

Effect of Seaweed Extract Supplement on Rice Rhizosphere Bacterial Community in Tillering and Heading Stages

by
Chun-Lin Chen
1,2,
Wan-Lin Song
1,
Lin Sun
1,
Song Qin
1,
Cheng-Gang Ren
1,
Jian-Chao Yang
3,
Da-Wei Feng
1,
Ning Liu
3,
Jun Yan
4,
Bi-Bo Cui
4,
Zhi-Hai Zhong
1,
Qing-Quan Li
1,
Zhi-Dan Liu
2 and
Zheng-Yi Liu
1,*
1
Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
2
College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
3
Institute of Intelligent Agriculture, Yantai Academy of Agricultural Science and Technology, Yantai 265500, China
4
Xinyang Agricultural Experiment Station of Yancheng City, Yancheng 224049, China
*
Author to whom correspondence should be addressed.
Agronomy 2022, 12(2), 342; https://doi.org/10.3390/agronomy12020342
Submission received: 10 January 2022 / Revised: 25 January 2022 / Accepted: 26 January 2022 / Published: 29 January 2022
(This article belongs to the Topic Soil Fertility and Plant Nutrition for Sustainable Agriculture)
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Abstract

Rhizosphere microbiota are conducive to soil nutrient cycling for plant growth. Long-term and excessive application of chemical fertilizer is harmful to agriculture. Seaweed extract is a good organic substitute for rhizosphere ecosystem and plant growth. We supplemented 5‰ seaweed extract powder to chemical fertilizer, and then studied its effect on rhizosphere bacteria of japonica rice (Oryza sativa L. subsp. japonica). In a short-term experiment, we compared the changes in rhizosphere bacteria among four treatments, i.e., no fertilizer (T1), chemical fertilizer only (T2), chemical fertilizer with 5‰ seaweed extract (T3), and less chemical fertilizer with 5‰ seaweed extract (80% of that of T3) (T4). Results show that seaweed extract supplement could affect the bacterial community in tillering and heading stages; the α-diversity of rhizosphere bacteria in the heading stage was obviously improved. In addition, seaweed extract supplement improved significantly the content of nitrate nitrogen (N), available phosphorus (P), and available potassium (K) in rhizosphere soil in the tillering stage, and, finally, increased the rice yield and quality mildly. Therefore, the seaweed extract supplement is shown to be a potential strategy to enrich the diversity of rhizosphere bacteria, which enhanced soil nutrient level, increased rice yield and quality, and also saved the use of chemical fertilizer.
Keywords: short-term fertilization; seaweed extract supplement; rhizosphere microbial community; tillering stage; heading stage; japonica rice short-term fertilization; seaweed extract supplement; rhizosphere microbial community; tillering stage; heading stage; japonica rice

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MDPI and ACS Style

Chen, C.-L.; Song, W.-L.; Sun, L.; Qin, S.; Ren, C.-G.; Yang, J.-C.; Feng, D.-W.; Liu, N.; Yan, J.; Cui, B.-B.; et al. Effect of Seaweed Extract Supplement on Rice Rhizosphere Bacterial Community in Tillering and Heading Stages. Agronomy 2022, 12, 342. https://doi.org/10.3390/agronomy12020342

AMA Style

Chen C-L, Song W-L, Sun L, Qin S, Ren C-G, Yang J-C, Feng D-W, Liu N, Yan J, Cui B-B, et al. Effect of Seaweed Extract Supplement on Rice Rhizosphere Bacterial Community in Tillering and Heading Stages. Agronomy. 2022; 12(2):342. https://doi.org/10.3390/agronomy12020342

Chicago/Turabian Style

Chen, Chun-Lin, Wan-Lin Song, Lin Sun, Song Qin, Cheng-Gang Ren, Jian-Chao Yang, Da-Wei Feng, Ning Liu, Jun Yan, Bi-Bo Cui, and et al. 2022. "Effect of Seaweed Extract Supplement on Rice Rhizosphere Bacterial Community in Tillering and Heading Stages" Agronomy 12, no. 2: 342. https://doi.org/10.3390/agronomy12020342

APA Style

Chen, C.-L., Song, W.-L., Sun, L., Qin, S., Ren, C.-G., Yang, J.-C., Feng, D.-W., Liu, N., Yan, J., Cui, B.-B., Zhong, Z.-H., Li, Q.-Q., Liu, Z.-D., & Liu, Z.-Y. (2022). Effect of Seaweed Extract Supplement on Rice Rhizosphere Bacterial Community in Tillering and Heading Stages. Agronomy, 12(2), 342. https://doi.org/10.3390/agronomy12020342

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