Correlating pattern of river discharge with degree of urbanization in sub-catchments of River Asa in Ilorin, Nigeria

Iroye, K. A.

doi:10.4314/ejesm.v10i2.11

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…The calculated ETo for the Ilorin reference station with air distance of 75 km was found to be higher for all months observed. This is expected as the study site is in the fringe of rainforest and derived savanna with humid condition compare to the reference station (Ilorin) deeply located in the guinea savanna vegetative belt (Iroye, 2017).…”

Section: Parametersmentioning

confidence: 66%

Growth-stage-specific crop coefficient and consumptive use of Capsicum chinense using hydraulic weighing lysimeter

Raphael

Ogedengbe

Fasinmirin

et al. 2018

Agricultural Water Management

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This research was conducted to determine growth stage-specific crop coefficient (Kc) and Consumptive Use (CU), for Capsicum chinense (Ata rodo) grown under irrigation in Omu-Aran, North central Nigeria. Daily CU and growth stagespecific crop coefficient Kc for Capsicum chinense was measured using a developed and calibrated hydraulic weighing lysimeter over 2 consecutive dry seasons (2015/16 and 2016/17). The values of CU and growth stage-specific Kc obtained were compared to that estimated using CROPWAT 8.0 and with existing Food and Agricultural Organization (FAO) Kc values for bell pepper. The Kc values determined over the growing seasons varied from 0.32 to 0.7, 1.02 to 1.45 and 0.76 to 0.9 representing Kc initial, Kc mid-season and Kc late season (Kc ini , Kc mid and Kc end), respectively. These Kc varied significantly (P < 0.05) from FAO established Kc values. The observed Kc was validated using relevant statistical methods. The seasonal CU of Capsicum chinense was 580.01 ± 54 mm, while the reference evapotranspiration increased from 3.26 mm day −1 in October to 4.19 mm day −1 in February. The crop factor increased from 0.7 in October to attain its peak of 1.45 in January, but decreased to 0.9 during crop senescence in February. Likewise, the daily crop water need was 2.28 mm day −1 in October but reached its peak of 5.82 mm day −1 in January and thereafter decreased to 3.77 mm day −1 in February. Mean monthly water need of Capsicum chinense pepper was 68.36 mm month −1 in October. The water need of crop rose to its peak of 166.32 mm month −1 in December, and thereafter declined to 113.13 mm month −1 in February It is inferred that the application of growth stage-specific Kc will assist in irrigation management and would serve as useful guide for precise water applications for areas around Omu-Aran as it differs from region to region.

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Section: Parametersmentioning

confidence: 66%

Growth-stage-specific crop coefficient and consumptive use of Capsicum chinense using hydraulic weighing lysimeter

Raphael

Ogedengbe

Fasinmirin

et al. 2018

Agricultural Water Management

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“…Activities around these streams include: commercial/business activities, domestic waste water channel to the stream, refuse dumps, irrigation of farmland and open defecation around Osere Stream (OS) while Yidi Stream (YDS) had industrial layout with pharmaceutical effluents discharge, cassava processing units discharge, mechanic workshops waste discharge, run offs from hotels, laundry outfits/car wash effluent, and Unity stream (UNS) is characterized with indiscriminate disposal of domestic wastes, plastic wastes, industrial effluents and car washing/laundry activities. Ilorin metropolis is mainly drained by River Asa, with many tributaries leading to a dendritic drainage pattern (Ajadi et al, 2016;Iroye, 2017). @ECRTD-UK: https://www.eajournals.org/…”

Section: Study Areamentioning

confidence: 99%

Untitled

2023

IJEPR

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This paper focuses on the determination of both the presence and concentration of phthalate esters in three tributaries of Asa River in Kwara State, Nigeria.Water samples were collected at different points from each of the three tributaries (Unity, Osere and Yidi streams) and a total number of 18 samples were collected and the concentration of the prevailing phthalates was determined using GC-MS. Seven different phthalates were found present in the samples and they are:

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“…The climate of Ilorin supports the growing of tall grass vegetation dotted with medium-sized trees. Urbanization process is fast replacing the Guinea savannah vegetation in the city with artificial (paved) surfaces with consequent effect on runoff generation, hence, frequent occurrence of flooding (Iroye, 2017), sediments yield (Jimoh, 1999) and erosion (Jimoh, 2000). The soil in Ilorin is formed under the grassland savannah cover and belong to the soil group called Ferruginous soil.…”

Section: The Study Areamentioning

confidence: 99%