Abstract
This experiment was carried out during the two successive seasons of 1999- 2000 and 2000-2001 in the unheated plastic house of the Vegetable Crops Department, Faculty of Agriculture, Cairo University. Transplants for sweet pepper (Capsicum annuum L. cv. Bruyo hybrid) were arranged In 3 replicates using split-plot design. The treatment of preplanting NPK soil addition was stablished in the main plots and 5 NPK fertigation levels in the sub-main. Generally, it can be observed that plant hleght and total leaf area showed higher Significant increases with the third fertigation level (100kg. NH~N~+ SOkg H,pO~+ 60kg K2S0~/plastic house, 540 m'). Meanwhile, number of leaves as well as dry weights of roots, stems and leaves recorded the highest significant increases with the fifth fertigation level (1 SOkg NH"N03+ 75kg H3PO~ + 90kg ~S04) in both seasons. In addition, the third fertigation level showed higher significant increases for early and total yield except, early yield In the second season. Also, concentrations of N and Fe showed significant increases by fifth fertigation level in leaves tissue. Furthermore, the same fertigalion level combined with preplanting NPK soil addition increased significantly concentration of Pb in leaves. Howeover, no constant trend could be detected in Ni concentrations between treatments. As regard fruit quality; fruit length, width and size as well as ascorbic acid no signifICant differences among treatments were recorded. However, total acidity and total soluble solids were increased significantly with increasing fertigation level in both seasons. Also, fruits tissue showed higher concentrations for N, P and K by NPK preplanting soil addition combined with the fifth fertigation level. Furthermore, fruit concentration of Fe and Zn recorded significant increases by increasing fertigation levels. In addition, preplanting NPK soil addition combined with the fifth fertigation level showed the lowest value of Pb concentration in fruits tissue. Moreover, concentration of Ni showed no significant differences among treatments. Furthermore, nitrate concentration was increased significantly by increasing fertigation levels, vice versa for total sugars. However, the concentrations of Pb and nitrate accumulation in sweet pepper fruit still less than the critical limits permitted to be found for human consumption.
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Claims 15
Claim · model-written summary
The third fertigation level increased plant height and total leaf area.
- Taxon
- SWEET PEPPER PLANTS
Capsicum annuumt0 - Treatment
- third fertigation levele0
- Outcome
- plant hleght and total leaf areae0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant hleght and total leaf area showed higher Significant increases with the third fertigation level”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
The fifth fertigation level gave the largest increases in leaf number and dry weights of roots, stems and leaves.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- fifth fertigation levele0
- Outcome
- number of leaves as well as dry weights of roots, stems and leavese0
- Direction
- highest significant increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of leaves as well as dry weights of roots, stems and leaves recorded the highest significant increases with the fifth fertigation level”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
The third fertigation level increased early and total yield except early yield in the second season.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- third fertigation levele0
- Outcome
- early and total yielde0
- Direction
- increasese0
- Qualifier
- except, early yield In the second seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the third fertigation level showed higher significant increases for early and total yield except, early yield In the second season”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
The fifth fertigation level increased leaf nitrogen and iron concentrations.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Organ / stage
- leaves tissuee0
- Treatment
- fifth fertigation levele0
- Outcome
- concentrations of N and Fee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentrations of N and Fe showed significant increases by fifth fertigation level in leaves tissue”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Fifth-level fertigation combined with preplant NPK increased leaf lead concentration.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Organ / stage
- leavese0
- Treatment
- preplanting NPK soil additione0
- Outcome
- concentration of Pb in leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the same fertigalion level combined with preplanting NPK soil addition increased significantly concentration of Pb in leaves”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Nickel concentrations had no consistent treatment trend.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Outcome
- Ni concentrationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no constant trend could be detected in Ni concentrations between treatments”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Fruit dimensions and ascorbic acid showed no significant treatment differences.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- treatmentse0
- Outcome
- fruit length, width and size as well as ascorbic acide0
- Direction
- no signifICant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruit length, width and size as well as ascorbic acid no signifICant differences among treatments were recorded”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Total acidity and soluble solids increased with fertigation level.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- increasing fertigation levele0
- Outcome
- total acidity and total soluble solidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total acidity and total soluble solids were increased significantly with increasing fertigation level in both seasons”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Preplant NPK combined with fifth-level fertigation increased fruit N, P and K concentrations.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Organ / stage
- fruits tissuee0
- Treatment
- NPK preplanting soil addition combined with the fifth fertigation levele0
- Outcome
- concentrations for N, P and Ke0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits tissue showed higher concentrations for N, P and K by NPK preplanting soil addition combined with the fifth fertigation level”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Fruit iron and zinc concentrations increased with fertigation level.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- increasing fertigation levelse0
- Outcome
- fruit concentration of Fe and Zne0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruit concentration of Fe and Zn recorded significant increases by increasing fertigation levels”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Preplant NPK combined with fifth-level fertigation gave the lowest fruit lead concentration.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- preplanting NPK soil addition combined with the fifth fertigation levele0
- Outcome
- Pb concentration in fruits tissuee0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preplanting NPK soil addition combined with the fifth fertigation level showed the lowest value of Pb concentration in fruits tissue”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Fruit nickel concentration did not differ significantly among treatments.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- treatmentse0
- Outcome
- concentration of Nie0
- Direction
- no significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentration of Ni showed no significant differences among treatments”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Nitrate concentration increased with fertigation level.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- increasing fertigation levelse0
- Outcome
- nitrate concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrate concentration was increased significantly by increasing fertigation levels”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Total sugars decreased with increasing fertigation.
- Taxon
- SWEET PEPPER PLANTSCapsicum annuumt0
- Treatment
- increasing fertigation levelse0
- Outcome
- total sugarse0
- Direction
- decreaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrate concentration was increased significantly by increasing fertigation levels, vice versa for total sugars”
t0“SWEET PEPPER PLANTS”
Claim · model-written summary
Fruit lead and nitrate concentrations stayed below limits for human consumption.
- Taxon
- sweet pepperCapsicum annuume0
- Outcome
- concentrations of Pb and nitrate accumulatione0
- Direction
- less thane0
- Comparator
- critical limitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentrations of Pb and nitrate accumulation in sweet pepper fruit still less than the critical limits permitted to be found for human consumption”
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