Recent advances towards understanding and managing Kenyan acid soils for improved crop production

Kisinyo, P. O.; Opala, P. A.; Gudu, S.; Othieno, C. O.; Okalebo, J. R.; Palapala, Valerie A.; Otinga, Abigael N.

doi:10.5897/ajar2013.8359

Cited by 30 publications

(27 citation statements)

References 36 publications

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“…The exchangeable soil acidity and exchangeable Al 3+ were 3.84 and 1.52 cmol c kg −1 soil, respectively. Under such soil acidity environment, crop growth is adversely affected due to the toxicity of Al on plant roots, reduced availability P and microbial activity such as atmospheric N 2 fixation, and OM decomposition [45]. The available P falls within the low range (6-10 mg kg −1 ) for clay soils [46] and therefore indicates the need for applying supplemental P in these soils.…”

Section: Soil Fertility Status Prior To Experiments and Quality Of Orgmentioning

confidence: 99%

Yield of faba bean (Vicia faba L.) as affected by lime, mineral P, farmyard manure, compost and rhizobium in acid soil of Lay Gayint District, northwestern highlands of Ethiopia

et al. 2018

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Background: Soil acidity with associated low nutrient availability is one of the major constraints to faba bean (Vicia faba L.) production on Ethiopian highlands. Integrated use of organic and inorganic amendments is believed to reduce soil acidity and improve crop production. Therefore, this field experiment was conducted with the objective of evaluating the effects of lime, mineral P, farmyard manure (FYM), compost and rhizobium in acid soil of Lay Gayint District, northwestern highlands of Ethiopia, in 2016-2017 main cropping season. The experiment comprised twenty sole and combined treatments arranged in a completely randomized block design with three replications. Results: Combined application of 8 t FYM ha −1 + 30 kg P ha −1 + 3.6 t lime ha −1 significantly (P < 0.05) increased plant height, number of leaves and branches per plant, pod length, biological and straw yields. Grain per pod, grain yield and thousand grain weight were significantly (P < 0.05) increased with the application of 4 t FYM ha −1 + 15 kg P ha −1 + 7.2 t lime ha −1. This treatment resulted in 102% grain yield advantage over the control. The next higher grain yield advantage of 89% was achieved with 4 t FYM ha −1 + 15 kg P ha −1 + 3.6 t lime ha −1. Nodule number and nodule dry weight per plant were also improved due to 4 t FYM ha −1 + 15 kg P ha −1 + 7.2 t lime ha −1 application. Among sole treatments applied separately, 8 t FYM ha −1 was observed to be superior in all parameters considered followed by 7.2 t lime ha −1. Conclusion: Combined application of 4 t FYM ha −1 + 15 kg P ha −1 + 3.2 t lime ha −1 could be suggested as effective amendment to improve the yield of faba bean and therefore contribute the effort to insure food security in strongly acid soils of the study area.

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Section: Soil Fertility Status Prior To Experiments and Quality Of Orgmentioning

confidence: 99%

Yield of faba bean (Vicia faba L.) as affected by lime, mineral P, farmyard manure, compost and rhizobium in acid soil of Lay Gayint District, northwestern highlands of Ethiopia

et al. 2018

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“…Most acidic soils have been found to be low in fertility, have poor chemical and biological properties. Strong soil acidity is associated with Al, H, Fe, Mn toxicities to plant roots in the soil solutions and corresponding deficiencies of the available P, Mo, Ca, Mg and K (Kisinyo et al, 2014). Aluminum toxicity primary affects the root apex and causes stunting of the primary root and inhibition of lateral root formation.…”

Section: Introductionmentioning

confidence: 99%

Organic and inorganic amendments on soil chemical properties at different period of incubation of acidic soil

Fekadu¹,

Kibret²,

Bedadi³

et al. 2018

Eurasian Journal of Soil Science (Ejss)

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Soil acidity is a critical issue necessitating urgent attention in most highlands of Ethiopia due to its impact on crop production productivity. Application of organic and inorganic amendments could effectively minimize the problem and improve the fertility level of the soil. Accordingly, a greenhouse experiment was conducted to evaluate the effects of sole and combined applications of lime, FYM, compost and P on soil chemical properties incubated at 20, 40 and 60 days. The treatments were arranged in a completely randomized design with three replications. The results indicated that various treatment combinations raised the soil pH at the 40 days of incubation. All treatments showed increased P availability consistently with increasing time of incubation. Maximum available P was observed at the 60 days of incubation due to application of 8 t FYM ha-1 + 30 kg P ha-1 + 5 t lime ha-1 followed by 8 t compost ha-1 + 30 kg P ha-1 + 5 t lime ha-1. Exchangeable acidity and Al were reduced at the 40 and 60 days of incubation with the application of 30 kg P ha-1 + 10 t lime ha-1 followed by 4 t FYM or compost ha-1 + 15 kg P ha-1 + 10 t lime ha-1. Highest exchangeable Ca was obtained at 20 days of incubation with the application of 30 kg P ha-1 + 10 t lime ha-1 followed by 4 t ha-1 FYM + 15 kg P ha-1 + 10 t lime ha-1. Sole addition of 10 t lime ha-1 elevated ECEC from 19.29 to 22.30 cmolc kg-1 at the 40 days of incubation. Likewise, combined applications of 30 kg P ha-1 + 10 t lime ha-1 improved ECEC of the soil from 19.53 to 24.27 cmolc kg-1 at the 40 days of incubation. Integrated applications of organic and inorganic amendments were found more effective to reduce soil acidity and Al 3+ concentration with increasing the fertility of the soil.

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“…Acid soils are found dominantly in South and North Americas, Asia, and Africa. ey occupy about 40% of the total arable land area in the world [1]. Soil acidity and decline in soil fertility are forms of soil degradation adversely affecting sustainable crop production in the Ethiopian highlands, where the rainfall intensity is high and crop cultivation has occurred with reduced manure application, and removal of crop residue [2,3].…”

Section: Introductionmentioning

confidence: 99%

Integrated Acid Soil Management for Growth, Nodulation, and Nutrient Uptake of Faba Bean (Vicia faba L.) in Lay Gayint District, Northwestern Highlands of Ethiopia

Fekadu

Kibret

Melese

2019

International Journal of Agronomy

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Soil acidity is one of the forms of soil degradation affecting sustainable crop production adversely in the Ethiopian highlands. In order to contribute to soil acidity amelioration and crop productivity improvement on acid soils, an experiment was conducted to investigate the effects of lime, mineral P, FYM, compost, and rhizobium on growth, nodulation, and nutrient uptake of faba bean (Vicia faba L.) in cultivated acid soil under greenhouse conditions. Twenty treatments were tested in isolations as well as suitable combinations. The treatments were arranged in a completely randomized design with three replications. The results showed that application of 8 t FYM·ha−1 + 30 kg P·ha−1 + 5 t lime·ha−1 produced significantly (P<0.001) higher plant height (58.67 cm), number of branches (13.78) and leaves per plant (37.11), shoot dry weight (5.14 g per plant), tissue N (3.83%) and P (0.219) contents and uptakes, and soil N (0.28%) and P (7.61 mg·Kg−1) after harvest. However, significant increases (P<0.001) in nodule number (153.33) and nodule dry weight (131.33 mg per plant) were obtained due to application of 4 t FYM·ha−1 + 15 kg P·ha−1 + 10 t lime·ha−1. The increased above-ground biomass, and nodulation could be due reducing soil acidity, and the supply of N, P, and other nutrients in FYM through mineralization. Therefore, combined use of lime, FYM, and P fertilizers could improve the growth characteristics, nodulation, and nutrient uptake of faba bean in acid soil of Lay Gayint district. However, the treatments should be tested in the field to verify the greenhouse results.

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Recent advances towards understanding and managing Kenyan acid soils for improved crop production

Cited by 30 publications

References 36 publications

Yield of faba bean (Vicia faba L.) as affected by lime, mineral P, farmyard manure, compost and rhizobium in acid soil of Lay Gayint District, northwestern highlands of Ethiopia

Yield of faba bean (Vicia faba L.) as affected by lime, mineral P, farmyard manure, compost and rhizobium in acid soil of Lay Gayint District, northwestern highlands of Ethiopia

Organic and inorganic amendments on soil chemical properties at different period of incubation of acidic soil

Integrated Acid Soil Management for Growth, Nodulation, and Nutrient Uptake of Faba Bean (Vicia faba L.) in Lay Gayint District, Northwestern Highlands of Ethiopia

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