Abstract
The suitability as growing media of composts made from pine bark or pine bark cocomposted with goat manure or sewage sludge and either inoculated or not inoculated with effective microorganisms, was evaluated under greenhouse conditions with and without fertilization using cabbage as the test crop. The treatments were replicated three times and arranged in a randomized complete block design in a fibre glass covered greenhouse. Cabbage seedlings were grown in cavity trays for five weeks, after which plants were harvested and fresh and dry weights determined. Samples were also analyzed for N, P, K and selected heavy metal concentrations. Results revealed that pine bark-goat manure cocomposts supported good seedling growth and could thus be good substitutes for pine bark alone as a growing medium where goat manure or similar manures are available. The results also showed that despite the superior nutritional value of these alternative growing media, nutrient supplementation may still be necessary where seedlings are kept in the nursery for extended periods due to nutrient exhaustion through plant uptake and leaching. Pine bark-sewage sludge compost also had positive effects on seedling growth but could only be recommended as a growing medium for nonfood plants because its composting did not reach the thermophillic temperatures necessary for adequate pathogen kill. Inoculation with effective microorganisms improved seedling growth in sewage sludge and goat manure based composts but the mechanisms involved remain to be established.
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Claims 6
Claim · model-written summary
Pine bark-goat manure cocompost supported good cabbage seedling growth.
- Taxon
- cabbage
Brassica oleracea var. capitatae1 - Treatment
- pine bark-goat manure cocompostse0
- Outcome
- seedling growthe0
- Direction
- goode0
- Comparator
- pine bark alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pine bark-goat manure cocomposts supported good seedling growth and could thus be good substitutes for pine bark alone as a growing medium”
t0“Vegetable Seedlings”
e1“using cabbage as the test crop”
Claim · model-written summary
Pine bark-sewage sludge compost had positive effects on cabbage seedling growth.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Treatment
- Pine bark-sewage sludge composte0
- Outcome
- seedling growthe0
- Direction
- positive effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pine bark-sewage sludge compost also had positive effects on seedling growth”
t0“Vegetable Seedlings”
e1“using cabbage as the test crop”
Claim · model-written summary
Effective microorganism inoculation improved seedling growth in sewage sludge compost.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Treatment
- Inoculation with effective microorganismse0
- Interactor
- effective microorganismse0symbiont
- Outcome
- seedling growthe0
- Direction
- improvede0
- Qualifier
- sewage sludgee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with effective microorganisms improved seedling growth in sewage sludge and goat manure based composts”
t0“Vegetable Seedlings”
e1“using cabbage as the test crop”
Claim · model-written summary
Effective microorganism inoculation improved seedling growth in goat manure compost.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Treatment
- Inoculation with effective microorganismse0
- Interactor
- effective microorganismse0symbiont
- Outcome
- seedling growthe0
- Direction
- improvede0
- Qualifier
- goat manuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with effective microorganisms improved seedling growth in sewage sludge and goat manure based composts”
t0“Vegetable Seedlings”
e1“using cabbage as the test crop”
Claim · model-written summary
Nutrient supplementation may be needed for seedlings kept longer in the nursery.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Outcome
- nutrient supplementation may still be necessarye0
- Qualifier
- extended periodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrient supplementation may still be necessary where seedlings are kept in the nursery for extended periods due to nutrient exhaustion through plant uptake and leaching”
t0“Vegetable Seedlings”
e1“using cabbage as the test crop”
Claim · model-written summary
Sewage sludge compost was recommended only for nonfood plants because composting did not reach pathogen-killing temperatures.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Outcome
- growing medium for nonfood plantse0
- Qualifier
- did not reach the thermophillic temperatures necessary for adequate pathogen kille0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“could only be recommended as a growing medium for nonfood plants because its composting did not reach the thermophillic temperatures necessary for adequate pathogen kill”
t0“Vegetable Seedlings”
e1“using cabbage as the test crop”
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