Abstract
Abstract Cool‐season food legumes (CSFLs) are important supplementary protein sources and soil fertility restorers for subsistence farmers in Ethiopia. Yields of CSFLs, however, are limited by low soil fertility, as they are grown in poor soils, often without fertilizer. Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia. It is highly appreciated by the local people for its taste. This paper reports on the effect of phosphorus (P) on the yield and nutrition value of Dekoko under field conditions, and compares the results with those obtained for Ater ( Pisum sativum var. sativum ). The experiment was conducted in the 1998 and 1999 growing seasons. Three rates of P equivalent to zero, 30, and 60 kg ha −1 P 2 O 5 were tested. Biomass, leaf area index, branches/plant, pods/m 2 and yield responded positively while seeds/pod and seed weight were not significantly affected by P. Tissue P contents in shoots and roots increased with an increase in P application rate, while P in the nodules was not affected. Crude protein (CP) content increased from 24.9 % of dry matter (DM) at P0 to 26.2 % at P2, and from 24.3 % at P0 to 25.2 % at P2, in Dekoko and Ater seeds, respectively, while total sugars decreased with an increase in P application rate. Cysteine in Dekoko and asparagine and threonine in both varieties decreased, while lysine and other amino acids were not significantly affected by P. P improved seed yield and CP content without greatly affecting the amino acid profile of Dekoko, when compared with that of the FAO/WHO (1991, Protein Quality Evaluation. Food and Nutrition, Paper 51. FAO/WHO, Rome) standard pattern of amino acid for children 2–5 years of age. Thus, improving yield through fertilization may help to improve nutritional quality and household food security for subsistence farmers.
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Claims 12
Claim · model-written summary
Phosphorus application increased biomass, leaf area index and branches per plant of Dekoko under field conditions.
- Taxon
- Pisum sativum var. abyssinicum
Lathyrus oleraceuse0 - Treatment
- Pe2
- Outcome
- Biomass, leaf area index, branches/plante1
- Direction
- responded positivelye1
- Comparator
- zeroe2
- Setting
- under field conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e1“Biomass, leaf area index, branches/plant, pods/m 2 and yield responded positively while seeds/pod and seed weight were not significantly affected by P”
e2“Three rates of P equivalent to zero, 30, and 60 kg ha −1 P 2 O 5 were tested”
e3“under field conditions”
Claim · model-written summary
Phosphorus application increased pods per square metre and seed yield of Dekoko under field conditions.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Treatment
- Pe2
- Outcome
- pods/m 2 and yielde1
- Direction
- responded positivelye1
- Comparator
- zeroe2
- Setting
- under field conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e1“Biomass, leaf area index, branches/plant, pods/m 2 and yield responded positively while seeds/pod and seed weight were not significantly affected by P”
e2“Three rates of P equivalent to zero, 30, and 60 kg ha −1 P 2 O 5 were tested”
e3“under field conditions”
Claim · model-written summary
Phosphorus application did not significantly affect seeds per pod or seed weight of Dekoko.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Treatment
- Pe2
- Outcome
- seeds/pod and seed weighte1
- Direction
- not significantly affectede1
- Comparator
- zeroe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e1“Biomass, leaf area index, branches/plant, pods/m 2 and yield responded positively while seeds/pod and seed weight were not significantly affected by P”
e2“Three rates of P equivalent to zero, 30, and 60 kg ha −1 P 2 O 5 were tested”
Claim · model-written summary
Tissue P content of shoots and roots increased with increasing P application rate.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Organ / stage
- shoots and rootse4
- Treatment
- increase in P application ratee4
- Outcome
- Tissue P contentse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e4“Tissue P contents in shoots and roots increased with an increase in P application rate, while P in the nodules was not affected”
Claim · model-written summary
Tissue P content of nodules was not affected by increasing P application rate.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Organ / stage
- nodulese4
- Treatment
- increase in P application ratee4
- Outcome
- P in the nodulese4
- Direction
- not affectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e4“Tissue P contents in shoots and roots increased with an increase in P application rate, while P in the nodules was not affected”
Claim · model-written summary
Phosphorus increased crude protein content of Dekoko seeds from 24.9 % to 26.2 % of dry matter between P0 and P2.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Material
- Dekokoe5
- Organ / stage
- seedse5
- Treatment
- Pe2
- Outcome
- Crude protein (CP) contente5
- Direction
- increasede5
- Value
- 24.9 % of dry matter (DM) at P0 to 26.2 % at P2e5
- Comparator
- P0e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e2“Three rates of P equivalent to zero, 30, and 60 kg ha −1 P 2 O 5 were tested”
e5“Crude protein (CP) content increased from 24.9 % of dry matter (DM) at P0 to 26.2 % at P2, and from 24.3 % at P0 to 25.2 % at P2, in Dekoko and Ater seeds, respectively”
Claim · model-written summary
Phosphorus increased crude protein content of Ater seeds from 24.3 % to 25.2 % of dry matter between P0 and P2.
- Taxon
- Pisum sativum var. sativumLathyrus oleraceuse6
- Material
- Atere5
- Organ / stage
- seedse5
- Treatment
- Pe2
- Outcome
- Crude protein (CP) contente5
- Direction
- increasede5
- Value
- 24.3 % at P0 to 25.2 % at P2e5
- Comparator
- P0e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Three rates of P equivalent to zero, 30, and 60 kg ha −1 P 2 O 5 were tested”
e5“Crude protein (CP) content increased from 24.9 % of dry matter (DM) at P0 to 26.2 % at P2, and from 24.3 % at P0 to 25.2 % at P2, in Dekoko and Ater seeds, respectively”
e6“compares the results with those obtained for Ater ( Pisum sativum var. sativum )”
Claim · model-written summary
Total sugars decreased as P application rate increased.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Treatment
- increase in P application ratee7
- Outcome
- total sugarse7
- Direction
- decreasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e7“while total sugars decreased with an increase in P application rate”
Claim · model-written summary
Cysteine content of Dekoko decreased with phosphorus application.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Material
- Dekokoe1
- Treatment
- Pe1
- Outcome
- Cysteinee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e1“Cysteine in Dekoko and asparagine and threonine in both varieties decreased, while lysine and other amino acids were not significantly affected by P”
Claim · model-written summary
Asparagine and threonine content decreased with phosphorus application in both varieties.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Material
- both varietiese1
- Treatment
- Pe1
- Outcome
- asparagine and threoninee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e1“Cysteine in Dekoko and asparagine and threonine in both varieties decreased, while lysine and other amino acids were not significantly affected by P”
Claim · model-written summary
Lysine and other amino acids were not significantly affected by phosphorus application.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Treatment
- Pe1
- Outcome
- lysine and other amino acidse1
- Direction
- not significantly affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e1“Cysteine in Dekoko and asparagine and threonine in both varieties decreased, while lysine and other amino acids were not significantly affected by P”
Claim · model-written summary
Improving yield through fertilization may help improve nutritional quality and household food security of subsistence farmers.
- Taxon
- Pisum sativum var. abyssinicumLathyrus oleraceuse0
- Outcome
- nutritional quality and household food securitye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dekoko ( Pisum sativum var. abyssinicum ) is one of the CSFLs cultivated in Tigray, Northern Ethiopia”
e2“Thus, improving yield through fertilization may help to improve nutritional quality and household food security for subsistence farmers”
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