Abstract
Zeolite may help crop growth, yield increase, and salt removal. Field experiment under greenhouse cultivation was conducted to study the effect of zeolite application on growth and yield of Chinese cabbage (Brassica campestris L.) and soil. Soil was classified as Gyuam series (coarse silty, mixed, nonacid, mesic family of Aquic Fluvaquentic Eutrudepts). Six zeolite rates were 0, 3, 5, 10, 20 and $40Mg\;ha^{-1}$. Experimental design was a completely randomized design. Chinese cabbage was grown three times consecutively. Established plant number of plant and yield as fresh weight (F.W.) were measured and soil samples were taken before and after harvesting. Chinese cabbage yield was $76.9Mg\;ha^{-1}$ at a rate of $20Mg\;zeolite\;ha^{-1}$, $54.3Mg\;ha^{-1}$ at a rate of $5Mg\;zeolite\;ha^{-1}$, and $51.3Mg\;ha^{-1}$ at control (no zeolite), respectively. Second order regression analysis using zeolite rate and yield showed that optimum zeolite application rate was between 24 and $26Mg\;ha^{-1}$. The regression equation explained about 88% of the yield variability. The electrical conductivity (EC) decreased from 3.2 to $1.0dS\;m^{-1}$ for all treatments so that salt accumulation was not a concern. Based on the results, we recommend that optimum zeolite application rate is between 20 and $24Mg\;ha^{-1}$ for Chinese cabbage under greenhouse cultivation.
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Claims 6
Claim · model-written summary
Chinese cabbage yielded 76.9 Mg per hectare at the 20 Mg zeolite rate.
- Taxon
- Chinese cabbage
Brassica rapa subsp. pekinensise0 - Treatment
- at a rate of $20Mg\;zeolite\;ha^{-1}$e0
- Outcome
- yielde0
- Direction
- higherinferrede0
- Value
- $76.9Mg\;ha^{-1}$e0
- Qualifier
- $51.3Mg\;ha^{-1}$e0
- Comparator
- control (no zeolite)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chinese cabbage yield was $76.9Mg\;ha^{-1}$ at a rate of $20Mg\;zeolite\;ha^{-1}$, $54.3Mg\;ha^{-1}$ at a rate of $5Mg\;zeolite\;ha^{-1}$, and $51.3Mg\;ha^{-1}$ at control (no zeolite), respectively.”
Claim · model-written summary
Chinese cabbage yielded 54.3 Mg per hectare at the 5 Mg zeolite rate.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise0
- Treatment
- at a rate of $5Mg\;zeolite\;ha^{-1}$e0
- Outcome
- yielde0
- Direction
- higherinferrede0
- Value
- $54.3Mg\;ha^{-1}$e0
- Qualifier
- $51.3Mg\;ha^{-1}$e0
- Comparator
- control (no zeolite)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chinese cabbage yield was $76.9Mg\;ha^{-1}$ at a rate of $20Mg\;zeolite\;ha^{-1}$, $54.3Mg\;ha^{-1}$ at a rate of $5Mg\;zeolite\;ha^{-1}$, and $51.3Mg\;ha^{-1}$ at control (no zeolite), respectively.”
Claim · model-written summary
The fitted optimum zeolite rate was between 24 and 26 Mg per hectare.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Outcome
- optimum zeolite application ratee0
- Value
- between 24 and $26Mg\;ha^{-1}$e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimum zeolite application rate was between 24 and $26Mg\;ha^{-1}$”
e1“Chinese cabbage (Brassica campestris L.)”
Claim · model-written summary
Zeolite-rate regression explained about 88% of yield variability.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise2
- Treatment
- zeolite ratee1
- Outcome
- yield variabilitye0
- Value
- about 88%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The regression equation explained about 88% of the yield variability.”
e1“Second order regression analysis using zeolite rate and yield”
e2“Chinese cabbage (Brassica campestris L.)”
Claim · model-written summary
Soil electrical conductivity decreased across all treatments.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise1
- Outcome
- electrical conductivity (EC)e0
- Direction
- decreasede0
- Value
- $1.0dS\;m^{-1}$e0
- Qualifier
- from 3.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The electrical conductivity (EC) decreased from 3.2 to $1.0dS\;m^{-1}$ for all treatments”
e1“Chinese cabbage (Brassica campestris L.)”
Claim · model-written summary
The authors recommend 20 to 24 Mg zeolite per hectare for greenhouse Chinese cabbage.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise0
- Outcome
- optimum zeolite application ratee0
- Value
- between 20 and $24Mg\;ha^{-1}$e0
- Setting
- greenhouse cultivatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we recommend that optimum zeolite application rate is between 20 and $24Mg\;ha^{-1}$ for Chinese cabbage under greenhouse cultivation.”
The same questions in other papers
other · yield · Brassica rapa (field mustard)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- no effect
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- positive
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See all 12 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.