Abstract
In southern region acid soils cover appreciable areas of arable land and reduce or cause total failure of some sensitive crop yield. Barley is the most sensitive crop to soil acidity. A field experiment was carried out for three years (2007 to 2009) on loam Haplic Alisols of Chencha and clay loam Dystric luvisols of Hagerselam, Southern Region of Ethiopia, to evaluate the response of food barley and change in soil acidity to applied lime and NPK fertilizers. The study comprises three levels of calcitic lime (no lime, half and full doses of the recommend lime rate) and five different combinations of N-P-K fertilizers at the rate of 46-40-50 kg ha-1 (no fertilizer, NP, NK, PK, and NPK). The experimental design was factorial randomized complete block with three replications. Results obtained showed that application of lime and all combinations of fertilizers, either alone or combined, significantly (p < 0.05) increased barley yield over untreated control. The highest barley grain yield (2792 and 3279.3 kg ha-1) was recorded from combined application of NPK and half the recommended lime rate (3.84 and 0.85 t/ha at Chencha and Hagerselam, respectively) in 2007 when lime is freshly applied. In 2008 and 2009, when lime is used as residual effect, highest barley grain and biomass yields were obtained from applications of full lime rate + NPK. NPK application either alone or with lime gave better barley yield, which might suggest the importance of balanced (NPK) fertilizer application. The efficiency of fertilizers increased in the order of NP<NK<PK<NPK for Alisols of Chencha and NK<PK<NP<NPK for Luvisols of Hagereselam, with the effects accentuated more in the limed than in the un limed treatments. Liming 1.75 to 7.68 Mg ha-1 decreased the concentration of surface (0-30 cm) soil exchangeable aluminum by 50 to 80 per cent and increased pHw by 0.5 to 1.3 units after one month of application. Half and full recommended lime rates had statistically similar direct and residual effect on barley yield in both investigated soils; hence, applying half the recommended lime rate can be used without significant yield loss.
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Claims 10
Claim · model-written summary
Lime and all fertilizer combinations significantly increased barley yield over the untreated control.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- application of lime and all combinations of fertilizerse0
- Outcome
- barley yielde0
- Direction
- increasede0
- Qualifier
- p < 0.05e0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Results obtained showed that application of lime and all combinations of fertilizers, either alone or combined, significantly (p < 0.05) increased barley yield over untreated control”
Claim · model-written summary
Combined NPK and half the recommended lime rate gave the highest barley grain yield in 2007.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- combined application of NPK and half the recommended lime ratee1
- Outcome
- barley grain yielde1
- Direction
- higheste1
- Value
- 2792 and 3279.3 kg ha-1e1
- Qualifier
- in 2007 when lime is freshly appliede1
- Setting
- Chencha and Hagerselame1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The highest barley grain yield (2792 and 3279.3 kg ha-1) was recorded from combined application of NPK and half the recommended lime rate (3.84 and 0.85 t/ha at Chencha and Hagerselam, respectively) in 2007 when lime is freshly applied”
Claim · model-written summary
In 2008 and 2009, full lime rate plus NPK gave the highest barley grain and biomass yields under the residual lime effect.
- Taxon
- barleyHordeum vulgaree2
- Treatment
- full lime rate + NPKe2
- Outcome
- barley grain and biomass yieldse2
- Direction
- higheste2
- Qualifier
- when lime is used as residual effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In 2008 and 2009, when lime is used as residual effect, highest barley grain and biomass yields were obtained from applications of full lime rate + NPK”
Claim · model-written summary
NPK application alone or with lime gave better barley yield.
- Taxon
- barleyHordeum vulgaree4
- Treatment
- NPK application either alone or with limee4
- Outcome
- barley yielde4
- Direction
- bettere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“NPK application either alone or with lime gave better barley yield”
Claim · model-written summary
Fertilizer efficiency at Chencha increased in the order NP<NK<PK<NPK.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- NP<NK<PK<NPKe3
- Outcome
- efficiency of fertilizerse3
- Direction
- increasede3
- Setting
- Chenchae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“LIME AND NPK EFFECT ON SOIL ACIDITY AND YIELD OF BARLEY IN DIFFERENT ACID SOILS OF SOUTHERN REGION, ETHIOPIA”
e3“The efficiency of fertilizers increased in the order of NP<NK<PK<NPK for Alisols of Chencha and NK<PK<NP<NPK for Luvisols of Hagereselam”
Claim · model-written summary
Fertilizer efficiency at Hagerselam increased in the order NK<PK<NP<NPK.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- NK<PK<NP<NPKe3
- Outcome
- efficiency of fertilizerse3
- Direction
- increasede3
- Setting
- Hagereselame3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“LIME AND NPK EFFECT ON SOIL ACIDITY AND YIELD OF BARLEY IN DIFFERENT ACID SOILS OF SOUTHERN REGION, ETHIOPIA”
e3“The efficiency of fertilizers increased in the order of NP<NK<PK<NPK for Alisols of Chencha and NK<PK<NP<NPK for Luvisols of Hagereselam”
Claim · model-written summary
Liming at 1.75 to 7.68 Mg ha-1 decreased surface soil exchangeable aluminum by 50 to 80 per cent.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Liming 1.75 to 7.68 Mg ha-1e5
- Outcome
- concentration of surface (0-30 cm) soil exchangeable aluminume5
- Direction
- decreasede5
- Value
- 50 to 80 per cente5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“LIME AND NPK EFFECT ON SOIL ACIDITY AND YIELD OF BARLEY IN DIFFERENT ACID SOILS OF SOUTHERN REGION, ETHIOPIA”
e5“Liming 1.75 to 7.68 Mg ha-1 decreased the concentration of surface (0-30 cm) soil exchangeable aluminum by 50 to 80 per cent”
Claim · model-written summary
Liming at 1.75 to 7.68 Mg ha-1 increased pHw by 0.5 to 1.3 units after one month.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Liming 1.75 to 7.68 Mg ha-1e5
- Outcome
- pHwe6
- Direction
- increasede6
- Value
- 0.5 to 1.3 unitse6
- Qualifier
- after one month of applicatione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“LIME AND NPK EFFECT ON SOIL ACIDITY AND YIELD OF BARLEY IN DIFFERENT ACID SOILS OF SOUTHERN REGION, ETHIOPIA”
e5“Liming 1.75 to 7.68 Mg ha-1 decreased the concentration of surface (0-30 cm) soil exchangeable aluminum by 50 to 80 per cent”
e6“increased pHw by 0.5 to 1.3 units after one month of application”
Claim · model-written summary
Half and full recommended lime rates had statistically similar direct and residual effects on barley yield.
- Taxon
- barleyHordeum vulgaree7
- Treatment
- Half and full recommended lime ratese7
- Outcome
- direct and residual effect on barley yielde7
- Direction
- similare7
- Qualifier
- statistically similare7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Half and full recommended lime rates had statistically similar direct and residual effect on barley yield in both investigated soils”
Claim · model-written summary
Applying half the recommended lime rate can be used without significant barley yield loss.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- half the recommended lime ratee1
- Outcome
- applying half the recommended lime ratee1
- Qualifier
- without significant yield losse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“LIME AND NPK EFFECT ON SOIL ACIDITY AND YIELD OF BARLEY IN DIFFERENT ACID SOILS OF SOUTHERN REGION, ETHIOPIA”
e1“applying half the recommended lime rate can be used without significant yield loss”
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