Abstract
This study was conducted on pea (Pisum sativum L.) cv. Master B in the Experimental Farm of Vegetable Research Station, Faculty of Agriculture, Mansoura University, Egypt during two winter seasons of 2015/2016 and 2016/2017 under silty clay loam conditions by using furrow irrigation system to investigate the effect of ascorbic acid (AsA), inorganic nitrogen (N) fertilization and their interactions on growth, productivity and quality of pea. Therefore, four concentrations of AsA, viz, 0, 100, 200 and 400 mg L-1 (ppm) applied as a foliar application combined with three N-fertilization levels, i.e., 60, 80 and 100 kg fed.-1 as a soil application were studied. The experiment was laid out as split plot in randomized complete block design (RCBD) with three replications. The obtained results revealed that fertilization of pea plants with 100 kg N/fed. combined with foliar application of AsA at 400 mg L-1 followed by 80 kg N/fed. with 400 mg L-1 of AsA gave significant increases for the traits of plant vegetative growth (plant height and fresh weight, branches and leaves number/plant, leaves fresh weight, leaves area/plant and partially leaves dry matter percentage), leaves chemical composition (N, P and K percentages and chlorophyll a, b and carotenoids contents), pods and seeds yield components (number and fresh weight of green pods/plant, green pods yield/fed., 100 seeds fresh weight and green seeds yield/fed.), seeds quality (Vit. C, TSS, total carbohydrates, crude protein, N, P, and K contents) and moderate values for both seeds nitrate (NO3) and dry matter percentage of pea compared with control treatment (60 kg N/fed. only), without significant differences between two interaction treatments in both seasons. Concerning the effect of nitrogen fertilization levels, all above mentioned parameters significantly increased with increasing N-fertilization level from 60 kg /fed. to 100 kg /fed. and vice versa for leaves and seeds dry matter percentages and seeds nitrate (NO3) content in both seasons. As for the impact of AsA, the rate of 400 ppm recorded significant increases for all forecited parameters with the lowest nitrate content of dry seeds compared with control treatment (untreated plants), with no significant differences among AsA concentrations in this respect in both seasons. Therefore, adding 100 kg N/fed. combined with AsA at 400 mg L-1 as a foliar application was the best treatment of which this study recommends to use followed by the treatment of 80 kg N/fed. + 400 mg L-1 of AsA to reduce the costs of production, environmental pollution and produce safe food for human health.
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Claims 6
Claim · model-written summary
Both combined nitrogen–AsA treatments significantly increased vegetative growth, leaf composition, yield and seed quality relative to the control; the treatments did not differ significantly.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- 100 kg N/fed. combined with foliar application of AsA at 400 mg L-1e0
- Outcome
- plant vegetative growthe0
- Direction
- increasese0
- Qualifier
- without significant differences between two interaction treatments in both seasonse0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: Extensive results exceed the budget when fully separated; grouped outcomes retain the reported production and quality results.
Verbatim
e0“fertilization of pea plants with 100 kg N/fed. combined with foliar application of AsA at 400 mg L-1 followed by 80 kg N/fed. with 400 mg L-1 of AsA gave significant increases for the traits of plant vegetative growth (plant height and fresh weight, branches and leaves number/plant, leaves fresh weight, leaves area/plant and partially leaves dry matter percentage), leaves chemical composition (N, P and K percentages and chlorophyll a, b and carotenoids contents), pods and seeds yield components (number and fresh weight of green pods/plant, green pods yield/fed., 100 seeds fresh weight and green seeds yield/fed.), seeds quality (Vit. C, TSS, total carbohydrates, crude protein, N, P, and K contents) and moderate values for both seeds nitrate (NO3) and dry matter percentage of pea compared with control treatment (60 kg N/fed. only), without significant differences between two interaction treatments in both seasons.”
Claim · model-written summary
The combined treatments produced moderate seed nitrate and dry matter values.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- 100 kg N/fed. combined with foliar application of AsA at 400 mg L-1e1
- Outcome
- seeds nitrate (NO3) and dry matter percentagee0
- Comparator
- control treatmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moderate values for both seeds nitrate (NO3) and dry matter percentage of pea compared with control treatment (60 kg N/fed. only)”
e1“100 kg N/fed. combined with foliar application of AsA at 400 mg L-1 followed by 80 kg N/fed. with 400 mg L-1 of AsA”
Claim · model-written summary
Increasing nitrogen from 60 to 100 kg/fed significantly increased the previously listed traits except leaf and seed dry matter and seed nitrate, which decreased.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- 100 kg /fed.e0
- Outcome
- all above mentioned parameterse0
- Direction
- increasede0
- Qualifier
- and vice versa for leaves and seeds dry matter percentages and seeds nitrate (NO3) content in both seasonse0
- Comparator
- 60 kg /fed.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all above mentioned parameters significantly increased with increasing N-fertilization level from 60 kg /fed. to 100 kg /fed. and vice versa for leaves and seeds dry matter percentages and seeds nitrate (NO3) content in both seasons.”
t0“Pea Plants”
Claim · model-written summary
AsA at 400 ppm significantly increased the preceding parameters relative to untreated plants.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- 400 ppme0
- Outcome
- all forecited parameterse0
- Direction
- increasese0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As for the impact of AsA, the rate of 400 ppm recorded significant increases for all forecited parameters with the lowest nitrate content of dry seeds compared with control treatment (untreated plants), with no significant differences among AsA concentrations in this respect in both seasons.”
t0“Pea Plants”
Claim · model-written summary
AsA at 400 ppm gave the lowest dry-seed nitrate content, with no significant difference among AsA concentrations in this respect.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- 400 ppme0
- Outcome
- nitrate content of dry seedse0
- Direction
- loweste0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of 400 ppm recorded significant increases for all forecited parameters with the lowest nitrate content of dry seeds compared with control treatment (untreated plants), with no significant differences among AsA concentrations in this respect in both seasons.”
t0“Pea Plants”
Claim · model-written summary
The authors recommend 100 kg N/fed with 400 mg L-1 foliar AsA, followed by the 80 kg N/fed alternative to reduce costs and pollution and produce safe food.
- Taxon
- PeaLathyrus oleraceust0
- Outcome
- adding 100 kg N/fed. combined with AsA at 400 mg L-1 as a foliar applicatione0
- Qualifier
- followed by the treatment of 80 kg N/fed. + 400 mg L-1 of AsAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“adding 100 kg N/fed. combined with AsA at 400 mg L-1 as a foliar application was the best treatment of which this study recommends to use followed by the treatment of 80 kg N/fed. + 400 mg L-1 of AsA to reduce the costs of production, environmental pollution and produce safe food for human health.”
t0“Pea Plants”
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