Effects of Compost and Mineral Sulfur Fertilizers on Phosphorus Desorption at Wujiraba Watershed, Northwestern Highlands of Ethiopia

1
Habtamu Admas
Habtamu Admas
2
Heluf Gebrekidan
Heluf Gebrekidan
3
Bobie Bedadi
Bobie Bedadi
4
Enyew Adgo
Enyew Adgo
1 Haramaya University

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GJSFR Volume 14 Issue D10

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Phosphorus fixation, which is responsible for low availability of P, is one of the major problems of crop growth in acidic soils such as Nitisols. It is one of the most chronic problems for crop yield decline in Wujiraba watershed. Therefore, an incubation study was conducted for two months to investigate the effects of compost and S fertilizers on P desorption in strongly acid soils (pH/KCl 4.53) and low P content (Bray II P 4.8 mg kg -1 ). After air drying, grinding and passing through 2 mm sieve, 200 g of soil was placed to each pot. The experimental treatments included three rates of compost (0, 5 and 10 t compost ha -1 ) and S (0, 15 and 30 kg S ha -1 ) fertilizers were laid down in CRD with three replications. At the end of the incubation period, the analyzed data result revealed highly significant (P ≤ 0.001) difference in available P by interaction effects of compost and S fertilizers whereby the highest (22.8 mg kg -1 ) was recorded in pots treated with high dose of compost (10 kg compost ha -1 ) and nil S fertilizer rates which increased by 301% relative to the control.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Habtamu Admas. 2015. \u201cEffects of Compost and Mineral Sulfur Fertilizers on Phosphorus Desorption at Wujiraba Watershed, Northwestern Highlands of Ethiopia\u201d. Global Journal of Science Frontier Research - D: Agriculture & Veterinary GJSFR-D Volume 14 (GJSFR Volume 14 Issue D10): .

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GJSFR Volume 14 Issue D10
Pg. 69- 78
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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January 14, 2015

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English

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Phosphorus fixation, which is responsible for low availability of P, is one of the major problems of crop growth in acidic soils such as Nitisols. It is one of the most chronic problems for crop yield decline in Wujiraba watershed. Therefore, an incubation study was conducted for two months to investigate the effects of compost and S fertilizers on P desorption in strongly acid soils (pH/KCl 4.53) and low P content (Bray II P 4.8 mg kg -1 ). After air drying, grinding and passing through 2 mm sieve, 200 g of soil was placed to each pot. The experimental treatments included three rates of compost (0, 5 and 10 t compost ha -1 ) and S (0, 15 and 30 kg S ha -1 ) fertilizers were laid down in CRD with three replications. At the end of the incubation period, the analyzed data result revealed highly significant (P ≤ 0.001) difference in available P by interaction effects of compost and S fertilizers whereby the highest (22.8 mg kg -1 ) was recorded in pots treated with high dose of compost (10 kg compost ha -1 ) and nil S fertilizer rates which increased by 301% relative to the control.

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Effects of Compost and Mineral Sulfur Fertilizers on Phosphorus Desorption at Wujiraba Watershed, Northwestern Highlands of Ethiopia

Habtamu Admas
Habtamu Admas Haramaya University
Heluf Gebrekidan
Heluf Gebrekidan
Bobie Bedadi
Bobie Bedadi
Enyew Adgo
Enyew Adgo

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