Pedological Characterization and Fertility Evaluation of Paddy Soils of Mvumi Village, Kilosa District, Tanzania

Massawe, Ikunda H.; Msanya, Balthazar M.; Rwehumbiza, F. B. R.

doi:10.20546/ijcrbp.2017.404.009

Cited by 7 publications

(9 citation statements)

References 12 publications

(14 reference statements)

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“…This is in line with the fact that clay content increased with depth (Table 3). Similar trend was observed for other soils in Tanzania by Massawe et al (2017). When clay content increases, ability of soil to retain water increases at any particular matric potential and the more gradual is the slope of the curves (Hillel, 2007).…”

Section: Physical Propertiessupporting

confidence: 63%

Pedological Characterization of Typical Soil of Dakawa Irrigation Scheme, Mvomero District, Morogoro Region, Tanzania

Mbaga¹,

Msanya²,

Mrema³

2017

Int. J. Curr. Res. Biosci. Plant Biol.

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A b s t r a c t A r t i c l e I n f oThis study was conducted to characterize dominant soil type at Dakawa Irrigation Scheme (DIS), Tanzania. Typical soil at DIS was identified, excavated and described using FAO (2006) Guidelines. Six disturbed samples were taken from soil profile horizons together with three undisturbed core samples for laboratory analysis. The pedon developed from Neogene alluvial parent materials under ustic moisture and isohyperthermic temperature regimes. The pedon was very deep (> 150 cm), moderately well drained, with gray to very dark gray soil colours. CaCO 3 concretions characteristic of calcic horizon were observed in subsoil. Soil texture was sandy clay loam throughout the pedon. pH was rated as medium (5.5 -7.0) to very high (7.0 -8.5) respectively for topsoil and subsoil. OC and N levels were very low; CEC and exchangeable bases were low to medium. Bulk densities were high (1.8 gcm -3 ) to very high (>1.9 gcm -3 ) for topsoil and subsoil, respectively. Study on moisture retention properties showed that subsurface (95 -100 cm) and intermediate (45 -50 cm) horizons retained more water than surface (0 -5 cm) soil, congruent with increasing clay content with depth. According to Soil Taxonomy and World Reference Base for Soil Resources, pedon at DIS classified as Vertic Calciustepts and Haplic Vertic Cambisols, respectively. These taxa reflect properties that may guide use and management of soils at DIS including selection of crops and fertilizers and rates to use. Organic fertilizers were recommended to increase organic matter content in soil. Use of acidifying inorganic fertilizers and gypsum as soil amendments should also be taken onboard to correct emerging sodicity.

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Section: Physical Propertiessupporting

confidence: 63%

Pedological Characterization of Typical Soil of Dakawa Irrigation Scheme, Mvomero District, Morogoro Region, Tanzania

Mbaga¹,

Msanya²,

Mrema³

2017

Int. J. Curr. Res. Biosci. Plant Biol.

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“…Moreover, the same profile contained many, medium, hard, round Fe concretions/nodules. The occurrence of redoximorphic features in form of mottles and Fe concretions/nodules in this profile may be attributed to redox conditions in the profile resulting from Similar observations were made elsewhere in Tanzania for similar soils by [34] and [35]. In profile HIS-P3 prominent shiny slickensides and deep wide cracks were observed.…”

Section: Soil Morphology and Genesissupporting

confidence: 81%

“…In profile HIS-P3 prominent shiny slickensides and deep wide cracks were observed. These features together with the prominence of wedge-shaped structure in the subsoil affirm that shrinking and swelling, and pedoturbation (in particular argilli-pedoturbation) were typical pedogenic processes in this profile [34]. Soil horizon boundaries were quite variable, ranging dominantly from gradual to diffuse smooth in soil profile HIS-P1 to clear and diffuse smooth in soil profiles HIS-P2 and HIS-P3.…”

Section: Soil Morphology and Genesissupporting

confidence: 56%

Pedological Characterization of Typical Soils of Dodoma Capital City District, Tanzania: Soil Morphology, Physico-chemical Properties, Classification and Soil Fertility Trends

Msanya¹,

Mwasyika²,

Amuri³

et al. 2018

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Pedolological characterization was done in Dodoma Capital City District, Tanzania. Three soil profiles developed from in-situ weathering of granic rocks and designated as HIS-P1, HIS-P2 and HIS-P3 were described. Fifteen samples were taken from genetic horizons and analyzed for physical and chemical characteristics. The soils were generally very deep, with varying textures. Whereas profile HIS-P2 was dominantly loamy, profiles HIS-P1 and HIS-P3 were both clayey but the latter had heavy clay type. In profile HIS-P1, clay eluviation-illuviation was a dominant pedogenic process manifested by presence of clay cutans in the subsoil. Profile HIS-P2 displayed redoximorphic features due to fluctuating water table. Shrinking and swelling, and argilli-pedoturbation were typical pedogenic processes in profile HIS-P3. Profile HIS-P1 had more developed structure (subangular blocky) followed by HIS-P3 and lastly profile HIS-P2 which was structureless massive breaking into weak subangular blocks. Whereas topsoil bulk density values of the soils were within acceptable range, subsoil BD values are likely to cause problems of root penetration particularly for deep rooted crops. Profiles HIS-P1 and HIS-P3 may present limitations to crop growth due to high pH values (> 7.5) in the subsoil which may limit availability of plant nutrients e.g. phosphorus. Organic carbon and nitrogen were generally low and very low in all profiles with most values being < 1.25% and < 0.10%, respectively. Availabe P values were low to very low (< 7 mg/kg) throughout the three profiles. Topsoil base saturation values were high (> 50%) in profiles HIS-P1 and HIS-P2 but very high throughout proflie HIS-P3 (83-118%). Zn and Fe levels were rated as inadequate for crop production. According to USDA Soil Taxonomy, the soils were classified as Typic Rhodustults (HIS-P1), Fluventic Dystrustepts (HIS-P2) and Chromic Calcitorrerts (HIS-P3) corresponding to Haplic Cutanic Acrisols, Haplic Cambisols and Calcic Mazic Vertisols in the WRB for Soil Resources. The three soils had different physico-chemical properties, hence the need to characterize soils before fertilizer recommendations is met.

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“…The topsoils of Seatondale and Mbimba indicated medium soil fertility status with the BS% between 20 and 50; whereas Uyole and Inyala indicated high fertility status with values >50. The literature indicates that high fertility soils have base saturation greater than 50 [24,28,29].…”

Section: Cation Exchange Capacitymentioning

confidence: 99%

“…The epipedons' K/CEC is greater than 2% for all study pedons in SHZT. This implies favorable conditions for production of tropical crops [23,29,30].…”

Section: Nutrient Ratiosmentioning

confidence: 99%

Pedology at Four Representative Sites of Southern Highland Zone of Tanzania

Mtama¹

2018

AJAF

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To study the soils of Southern Highland Zone of Tanzania, four representative pedons of some landscapes were characterized. Their names and identifiers are Seatondale, Mbimba, Inyala, and Uyole, respectively TzSea 01, TzMb 02, TzIny 03, and TzUy04. The pedons were formed from the weathering of among other materials, colluvial igneous rocks, alluvium, eluvial soils, laterite, lacustrine sands and silts, andesite, pumice, aeolian deposits, and metamorphic rocks including coarse grained and strongly foliated biotite gneisses. Twenty soil samples were taken for laboratory characterization. In addition to classical horizon by horizon descriptions and laboratory analyses, 12 core samples were taken for soil-water retention characterization. The available water holding capacity was rated as very low to low. Pedon descriptions and particle size analysis showed clay eluviation-illuviation was the predominant pedogenic process in all pedons. Soil pH was rated slightly acidic to slightly alkaline. Available P ranged from 0.71 mg/kg at Mbimba to 10.67 mg/kg at Seatondale. Exchangeable bases were variable across and within the profiles; at Uyole and Inyala they were high, while at Seatondale and Mbimba they were low and medium. Values of exchangeable bases showed decreasing trends with profile depths in all sites. C/N ratios ranged between 6 and 18, total nitrogen was rated very low to low in both A and B horizons. CEC soil ranged between 17.2 and 36.4 cmol (+) /kg. Organic carbon ranged from very low to high. The soils apparently developed from extreme and moderate weathering of parent materials. According to the USDA Soil Taxonomy, the pedons classified as Fine, Illitic, Active,

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Pedological Characterization and Fertility Evaluation of Paddy Soils of Mvumi Village, Kilosa District, Tanzania

Cited by 7 publications

References 12 publications

Pedological Characterization of Typical Soil of Dakawa Irrigation Scheme, Mvomero District, Morogoro Region, Tanzania

Pedological Characterization of Typical Soil of Dakawa Irrigation Scheme, Mvomero District, Morogoro Region, Tanzania

Pedological Characterization of Typical Soils of Dodoma Capital City District, Tanzania: Soil Morphology, Physico-chemical Properties, Classification and Soil Fertility Trends

Pedology at Four Representative Sites of Southern Highland Zone of Tanzania

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