Abstract
This study investigated composted rabbit manure as an organic matrix to replace peat for manufacturing horticultural growing media, where three kinds of rabbit manures were composted with temperatures > 50 °C lasting > 7 days, with a germination index > 70%. The heavy metal contents in rabbit manure were far lower than the thresholds in Chinese standards for safe use as horticultural growing media. Then, different ratios of compost and peat were mixed with perlite and vermiculite to manufacture growing media, which were evaluated in a 28-day seedling experiment with cabbage. The manufactured growing media characteristics could satisfy the seedlings’ requirements; air spaces in particular were improved from 15.7% to up to 28.7% by mixing composted manure. Seedling emergence percentages > 90% and good seedling qualities (including enhanced root length, seedling height, and chlorophyll content) indicated that composted rabbit manure could effectively replace peat to manufacture horticultural growing media. The best seedling performance was obtained with the following ratio of composted manure, peat, perlite, and vermiculite: 3:3:2:2. However, the mixing ratio could be further optimized, and other methods to reduce the salinity may be required for the different requirements of specific crops in further research.
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Claims 4
Claim · model-written summary
Composted manure mixtures improved growing-media air space from 15.7% to 28.7%.
- Taxon
- cabbage
Brassica oleracea var. capitatae1 - Treatment
- mixing composted manuree0
- Outcome
- air spacese0
- Direction
- improvede0
- Value
- 15.7% to up to 28.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“air spaces in particular were improved from 15.7% to up to 28.7% by mixing composted manure”
e1“seedling experiment with cabbage”
Claim · model-written summary
Cabbage seedling emergence exceeded 90% in the manufactured media.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Outcome
- Seedling emergence percentagese0
- Value
- > 90%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling emergence percentages > 90%”
e1“seedling experiment with cabbage”
Claim · model-written summary
Composted rabbit manure enhanced cabbage seedling root length, height and chlorophyll content.
- Taxon
- cabbageBrassica oleracea var. capitatae2
- Treatment
- composted rabbit manuree1
- Outcome
- root length, seedling height, and chlorophyll contente0
- Direction
- enhancede0
- Comparator
- peate1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced root length, seedling height, and chlorophyll content”
e1“composted rabbit manure could effectively replace peat”
e2“seedling experiment with cabbage”
Claim · model-written summary
The 3:3:2:2 composted manure, peat, perlite and vermiculite ratio gave the best cabbage seedling performance.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Outcome
- seedling performancee0
- Direction
- beste0
- Value
- 3:3:2:2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best seedling performance was obtained with the following ratio of composted manure, peat, perlite, and vermiculite: 3:3:2:2”
e1“seedling experiment with cabbage”
The same questions in other papers
fertilization · physiology: pigments · Brassica oleracea (wild cabbage)Positive and negative results
46 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
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See all 49 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.