Search Results - "E. Obalum, Sunday"

Comparative assessment of temporal changes in soil degradation under four contrasting land‐use options along a tropical toposequence by Alarima, Cornelius I., Annan‐Afful, Ebenezer, Obalum, Sunday E., Awotunde, Joseph M., Masunaga, Tsugimasu, Igwe, Charles A., Wakatsuki, Toshiyuki

“…Assessment of land‐use types has conventionally been on spatial rather than temporal scales, thus limiting the inference on relative potential of land‐use…”
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An overview of uncertainties in evapotranspiration estimation techniques by Ezenne, Gloria I, Eyibio, Nkpouto U, Tanner, Jane L, Asoiro, Felix U, Obalum, Sunday E

“…Accurate estimation of evapotranspiration (ET) is essential both at the regional and local scales for many management tasks. Numerous methods for estimating ET…”
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Soil Degradation-Induced Decline in Productivity of Sub-Saharan African Soils: The Prospects of Looking Downwards the Lowlands with the Sawah Ecotechnology by Obalum, Sunday E., Buri, Mohammed M., Nwite, John C., Hermansah, Watanabe, Yoshinori, Igwe, Charles A., Wakatsuki, Toshiyuki

“…The paper provides an insight into the problem of land degradation in Sub-Saharan Africa, with emphasis on soil erosion and its effect on soil quality and…”
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Puddling Intensity for Late-season Sawah Systems Based on Soil Hydrophysical Conditions and Rice Performance by Obalum, Sunday E., Watanabe, Yoshinori, Igwe, Charles A., Obi, Martin E., Wakatsuki, Toshiyuki

“…Abstract Lowland sawah farmers often puddle to improve soil hydrophysical conditions for rice, but the puddling intensity beyond which no extra yield increases…”
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Differences in carbon and nitrogen retention and bacterial diversity in sandy soil in response to application methods of charred organic materials by Oraegbunam, Chidozie J., Obalum, Sunday E., Watanabe, Toshihiro, Madegwa, Yvonne M., Uchida, Yoshitaka

“…The use of charred organic materials (biochar) as soil amendment can alter soil nutrient, microbial abundance, and their diversities. These alterations can be…”
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Physical-hydraulic properties of tropical sandy-loam soil in response to rice-husk dust and cattle dung amendments and surface mulching by Ezenne, Gloria I., Obalum, Sunday E., Tanner, Jane

“…The effects of topsoil addition of rice-husk dust (RHD) and cattle dung (CD), alongside surface mulching with dry grasses/legume, on the infiltration…”
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Effects of Subsoiling Depth on Soil Aggregate Stability and Carbon Storage in a Clay-Loam Soil by Wang, Shaobo, Liu, Zhen, Obalum, Sunday E., Liang, Chang, Han, Kun, Han, Huifang

“…Subsoiling can affect the stability of soil aggregates and soil organic carbon (SOC) sequestration. However, the effects of subsoiling depth on soil…”
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Physicochemical properties as related to mineralogical composition of floodplain soils in humid tropical environment and the pedological significance by Ukabiala, Maduabuchi E., Kolo, Jonah, Obalum, Sunday E., Amhakhian, Sunday O., Igwe, Charles A., Hermensah

“…Floodplains represent a huge but poorly understood and hence underutilised agricultural resource in the tropics. Insight into the pedogenesis of the soils…”
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Relative distribution of rare-earth metals alongside alkaline earth and alkali metals in rhizosphere of agricultural soils in humid tropical environment by Tyopine, Andrew A., Sikakwe, Gregory U., Obalum, Sunday E., Okoye, Chukwuma O.B.

“…The study of trace and major elements in the biosphere has traditionally focused on the transition and basic metals; the rare earth (REMs), alkaline earth…”
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Estimating impact of forest land on groundwater recharge in a humid subtropical watershed of the Lower Mississippi River Alluvial Valley by Ouyang, Ying, Jin, Wei, Grace, Johnny M., Obalum, Sunday E., Zipperer, Wayne C., Huang, Xiaoqing

“…•Contribution of precipitation to groundwater recharge in the Lower Mississippi River Alluvial Valley was small.•Forest land increases rather than reduces…”
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Paddy rice yield and greenhouse gas emissions: Any trade-off due to co-application of biochar and nitrogen fertilizer? A systematic review by Iboko, Maduabuchi P., Dossou-Yovo, Elliott R., Obalum, Sunday E., Oraegbunam, Chidozie J., Diedhiou, Siméon, Brümmer, Christian, Témé, Niaba

“…Combined application of biochar and nitrogen (N) fertilizer could offer opportunities to increase rice yield and reduce methane emissions from paddy fields…”
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Some utilisation options for cattle dung as soil amendment and their effects in coarse-textured Ultisols and maize growth by Ndzeshala, Solange D, Obalum, Sunday E, Igwe, Charles A

“…Purpose Scarcity of effective manures frustrates the adoption of organic-based soil fertility management in tropical agriculture. Cattle dung (CD) is hugely…”
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Bacterial Communities and Soil Properties Influencing Dung Decomposition and Gas Emissions Among Japanese Dairy Farms by Oraegbunam, Chidozie J., Kimura, Akari, Yamamoto, Terumasa, Madegwa, Yvonne M., Obalum, Sunday E., Tatsumi, Chikae, Watanabe, Toshihiro, Uchida, Yoshitaka

“…Dung decomposition on dairy farm soils is an important ecosystem service because it is linked to nutrient recycling in the soil. Contrastingly, the emissions…”
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Measured versus estimated total porosity along structure-stability gradients of coarse-textured tropical soils with low-activity clay by Obalum, Sunday E, Obi, Martin E

“…Soil total porosity is, rather than measured by water desorption method, more often estimated from bulk density (BD) and assumed particle density. Measured and…”
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Long-Term Effects of Crude Oil Spillage on Selected Physicochemical Properties Including Heavy Metal Contents of Sandy Tropical Soil by Umoren, Abasiama S., Igwenagu, Chioma M., Ezeaku, Peter I., Ezenne, Gloria I., Obalum, Sunday E., Gyang, Bitrus D., Igwe, Charles A.

“…Crude oil spillage effects on the environment often wane with time, making late remediation of affected soils look irrelevant. Physicochemical quality of a…”
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Interaction of small-scale supplemental irrigation, sawah preparation intensity and soil amendment type on productivity of lowland sawah-rice system by Nwite, John C, Obalum, Sunday E, Igwe, Charles A, Wakatsuki, Toshiyuki

“…Sole dependence on rainfall, poor water management and low soil fertility largely explain the fluctuations in agricultural productivity in West Africa…”
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Soil physical properties and grain yields of lowland rice in response to sawah preparation intensities and soil amendment types by Nwite, John C., Obalum, Sunday E., Igwe, Charles A., Wakatsuki, Toshiyuki

“…Sawah, an Indo-Malaysian word for rice paddy, is used in West Africa to refer to a lowland rice field that is bunded, puddled and levelled for ease of water…”
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Agronomic evaluation of seedbed and mulching alternatives with plant spacing for dry‐season fluted pumpkin in coarse‐textured tropical soil by Obalum, Sunday E., Edeh, Ifeoma G., Imoh, Odirichi N., Njoku, Ogechi M., Uzoh, Ifeyinwa M., Onyia, Vincent N., Igwe, Charles A., Reichert, Jose M.

“…Fluted pumpkin (Telfairia occidentalis) has high agronomic and food relevance in the tropics. Production of this vegetable in the dry season with irrigation is…”
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Aggregate-associated soil organic carbon and total nitrogen following amendment of puddled and sawah-managed rice soils in southeastern Nigeria by Igwe, Charles A., Nwite, John C., Agharanya, Kingsley U., Watanabe, Yoshinori, Obalum, Sunday E., Okebalama, Chinyere B., Wakatsuki, Toshiyuki

“…Puddling during sawah rice cultivation destabilizes the soil structure. The re-formation of soil water-stable aggregates (WSA) following puddling and…”
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Variations in selected soil physical properties with landforms and slope within an inland valley ecosystem in Ashanti region of Ghana by Obalum, Sunday E., Nwite, John C., Oppong, James, Igwe, Charles A., Wakatsuki, Toshiyuki

“…One peculiar feature of the inland valleys abundant in West Africa is their site-specific hydrology, underlain mainly by the prevailing landforms and…”
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