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Sustainability 2017, 9(5), 841; doi:10.3390/su9050841

Effects of Liquid Organic Fertilizers on Plant Growth and Rhizosphere Soil Characteristics of Chrysanthemum

1
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
2
University of the Chinese Academy of Sciences, Beijing 100049, China
3
Amway (China) Botanical R&D Center, Wuxi 214115, China
*
Author to whom correspondence should be addressed.
Academic Editor: Iain Gordon
Received: 31 March 2017 / Revised: 7 May 2017 / Accepted: 8 May 2017 / Published: 18 May 2017
(This article belongs to the Section Sustainable Agriculture, Food and Wildlife)
View Full-Text   |   Download PDF [6874 KB, uploaded 18 May 2017]   |  

Abstract

Organic fertilizers are generally thought to be an effective way to sustain soil fertility and plant growth. To promote the productivity of chrysanthemum, five sources of liquid organic fertilizers (L1–L5), as well as a chemical fertilizer, were applied at an early stage of the growth cycle to investigate their effects on plant growth. In the short-term pot experiment, the liquid organic fertilizers significantly promoted root and aboveground growth by 10.2–77.8% and 10.7–33.3%, respectively, compared with the chemical fertilizer. The order of growth promotion was: L1 (shrimp extracts) > L2 (plant decomposition) > L4 (seaweed extracts)/L5 (fish extracts) > L3 (vermicompost). Morphological and chemical analyses indicated that, compared with other organic fertilizers, the treatment with shrimp extract (L1) produced the greatest increases in root dry weight, total length, surface area, volume, tips, and thick root length, respectively. Furthermore, the shrimp extract treatment significantly increased the nutrient contents and altered the soil’s functional microbial community at the rhizospheric level compared with the chemical fertilizer treatment. Thus, the shrimp extract liquid organic fertilizer could be part of an effective alternative to chemical fertilization during the early stage of chrysanthemum growth. View Full-Text
Keywords: liquid organic fertilizer; chrysanthemum; root architecture; nutrient level; microbial community liquid organic fertilizer; chrysanthemum; root architecture; nutrient level; microbial community
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Ji, R.; Dong, G.; Shi, W.; Min, J. Effects of Liquid Organic Fertilizers on Plant Growth and Rhizosphere Soil Characteristics of Chrysanthemum. Sustainability 2017, 9, 841.

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