Abstract
growing seasons of 2013-2014 and 2014-2015, in a private farm at El-Salheya El-Gedida City, Ismailia Governorate, Egypt, to investigate the effect of rice straw (RS) as alternative to sandy soil (SS) and drenching applications of potassium humate (K2-HA) at 2 g/l, potassium silicate (K2SiO3) at 5 g/l, and seaweed extract (SWE) at 0.5 g/l on improving growth of sweet pepper (capsicum annuum L.) plants under deficit irrigation every 2 (I2), 3 (I3) and 4 (I4) days in addition to daily irrigation (I1) as control. Plant samples were taken at 90 days after transplanting to record leaf area, shoot fresh and dry weights, in addition to, determination of leaf relative water content (LRWC), concentrations of N, P, K and Ca. Mean values of drenching applications showed significant increase in the growth parameters ;shoot fresh and dry weights, leaf area, LRWC, as well as, concentrations of N, P and Ca in the two seasons comparing to untreated control and the best results were due to K2-HA followed by SWE then K2SiO3. The highest concentration of K was obtained by K2SiO3 followed by K2-HA then SWE. Plants were grown on RS showed significant increase in LRWC comparing to plants were grown on SS. Plants were applied with I2+ K2-HA+ SS showed the highest significant value of shoot fresh weight, shoot dry weight, leaf area, N, P and Ca concentrations followed by I2+SWE+SScomparing to control plants applied with I1+ SS without drenching applications. Plants were grown on RS showed significant increase in growth parameters comparing with control plants but less than those were grown on SS. The best results were achieved by I3 + K2-HA+ RS, I3 + SWE+ RS, I4 + K2-HA+ RS. Plants were grown on rice strawunderI3 irrigation and applied with K2-HA or SWE showed significant increase in N, P and Ca concentrations, while, under I4 irrigation an increase in N and P concentrations was obtained by K2-HA.The highest concentrations of k were observed with plants grown on SS under the highest level of irrigation deficit I4 by K2SiO3.It could be concluded from the present study that rice straw could alleviate the negative effect of low water supply and applications of K2-HA and SWE are recommended for enhancing sweet pepper growth and nutrient elements uptake under water deficit conditions.
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Claims 16
Claim · model-written summary
Drench treatments significantly increased shoot fresh and dry weights, leaf area, and leaf relative water content versus untreated controls; potassium humate ranked best.
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- drenching applicationse0
- Outcome
- shoot fresh and dry weights, leaf area, LRWCe0
- Direction
- increasee0
- Qualifier
- best results were due to K2-HA followed by SWE then K2SiO3e0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean values of drenching applications showed significant increase in the growth parameters ;shoot fresh and dry weights, leaf area, LRWC, as well as, concentrations of N, P and Ca in the two seasons comparing to untreated control and the best results were due to K2-HA followed by SWE then K2SiO3”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
Drench treatments significantly increased leaf N, P, and Ca concentrations versus untreated controls.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- drenching applicationse0
- Outcome
- concentrations of N, P and Cae0
- Direction
- increasee0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean values of drenching applications showed significant increase in the growth parameters ;shoot fresh and dry weights, leaf area, LRWC, as well as, concentrations of N, P and Ca in the two seasons comparing to untreated control and the best results were due to K2-HA followed by SWE then K2SiO3”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
Potassium silicate gave the highest leaf K concentration, ahead of potassium humate and seaweed extract.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- K2SiO3e0
- Outcome
- concentration of Ke0
- Direction
- higheste0
- Comparator
- K2-HA then SWEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentration of K was obtained by K2SiO3 followed by K2-HA then SWE”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
Rice straw increased leaf relative water content significantly versus sandy soil.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were grown on RS showed significant increase in LRWC comparing to plants were grown on SS”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
I2 plus K2-HA on sandy soil gave the highest significant shoot fresh weight, shoot dry weight, and leaf area versus daily irrigation on sandy soil without drench.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- I2+ K2-HA+ SSe0
- Outcome
- shoot fresh weight, shoot dry weight, leaf areae0
- Direction
- higheste0
- Comparator
- I1+ SS without drenching applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were applied with I2+ K2-HA+ SS showed the highest significant value of shoot fresh weight, shoot dry weight, leaf area, N, P and Ca concentrations followed by I2+SWE+SScomparing to control plants applied with I1+ SS without drenching applications”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
I2 plus K2-HA on sandy soil gave the highest significant N, P, and Ca concentrations versus daily irrigation on sandy soil without drench.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- I2+ K2-HA+ SSe0
- Outcome
- N, P and Ca concentrationse0
- Direction
- higheste0
- Comparator
- I1+ SS without drenching applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were applied with I2+ K2-HA+ SS showed the highest significant value of shoot fresh weight, shoot dry weight, leaf area, N, P and Ca concentrations followed by I2+SWE+SScomparing to control plants applied with I1+ SS without drenching applications”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
Rice straw significantly increased pepper growth parameters versus controls, though less than sandy soil.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- RSe0
- Outcome
- growth parameterse0
- Direction
- increasee0
- Qualifier
- less than those were grown on SSe0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were grown on RS showed significant increase in growth parameters comparing with control plants but less than those were grown on SS”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
I3 with potassium humate on rice straw was among the best treatment combinations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- I3 + K2-HA+ RSe0
- Outcome
- best resultse0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best results were achieved by I3 + K2-HA+ RS, I3 + SWE+ RS, I4 + K2-HA+ RS”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
I3 with seaweed extract on rice straw was among the best treatment combinations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- I3 + SWE+ RSe0
- Outcome
- best resultse0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best results were achieved by I3 + K2-HA+ RS, I3 + SWE+ RS, I4 + K2-HA+ RS”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
I4 with potassium humate on rice straw was among the best treatment combinations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- I4 + K2-HA+ RSe0
- Outcome
- best resultse0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best results were achieved by I3 + K2-HA+ RS, I3 + SWE+ RS, I4 + K2-HA+ RS”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
On rice straw under I3 irrigation, potassium humate significantly increased N, P, and Ca concentrations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- K2-HAe0
- Outcome
- N, P and Ca concentrationse0
- Direction
- increasee0
- Qualifier
- rice strawunderI3 irrigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were grown on rice strawunderI3 irrigation and applied with K2-HA or SWE showed significant increase in N, P and Ca concentrations”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
On rice straw under I3 irrigation, seaweed extract significantly increased N, P, and Ca concentrations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- SWEe0
- Outcome
- N, P and Ca concentrationse0
- Direction
- increasee0
- Qualifier
- rice strawunderI3 irrigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were grown on rice strawunderI3 irrigation and applied with K2-HA or SWE showed significant increase in N, P and Ca concentrations”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
Under I4 irrigation on rice straw, potassium humate increased N and P concentrations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- K2-HAe0
- Outcome
- N and P concentrationse0
- Direction
- increasee0
- Qualifier
- I4 irrigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under I4 irrigation an increase in N and P concentrations was obtained by K2-HA”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
Under I4 irrigation on sandy soil, potassium silicate yielded the highest K concentrations.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- K2SiO3e0
- Outcome
- concentrations of ke0
- Direction
- higheste0
- Qualifier
- SS under the highest level of irrigation deficit I4e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentrations of k were observed with plants grown on SS under the highest level of irrigation deficit I4 by K2SiO3”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
The authors concluded rice straw could alleviate the adverse effects of low water supply.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- rice strawe0
- Outcome
- alleviate the negative effect of low water supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice straw could alleviate the negative effect of low water supply”
t0“sweet pepper (capsicum annuum L.)”
Claim · model-written summary
The authors recommend potassium humate and seaweed extract to enhance growth and nutrient uptake under water deficit.
- Taxon
- sweet pepperCapsicum annuume0
- Treatment
- K2-HA and SWEe0
- Outcome
- enhancing sweet pepper growth and nutrient elements uptakee0
- Qualifier
- under water deficit conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of K2-HA and SWE are recommended for enhancing sweet pepper growth and nutrient elements uptake under water deficit conditions”
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See all 11 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.