Methods of soil moisture maintenance for production of sunflower under controlled conditions

Fontenelli, Julyane Vieira; Silva, Tonny José Araújo da; Bonfim-Silva, Edna Maria; Sousa, Helon H. F.; Duarte, Thiago Franco; Koetz, Márcio

doi:10.21475/ajcs.17.11.05.p405

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…The depth of water delivered to the eld was recorded using a Parshall ume (Xiao et al, 2015) installed at the entrance of each eld during irrigation. Soil moisture content before and after irrigation was determined by the gravimetric method (Fontenelli et al, 2017) TAW = 100* Fc − PWP *D r (Eq. 5)…”

Section: Selection and Evaluation Of Performance Indicatorsmentioning

confidence: 99%

Evaluating the Performance of Small-Scale Irrigation Schemes in Sub Humid Ethiopian Highlands; a case study in Mugie and Fesas

Belay¹,

Assefa

Belay

et al. 2022

Preprint

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Background This study was conducted to evaluate the performance of two small-scale irrigation (SSI) schemes in the sub-humid Ethiopian highlands. Water application at the farm level was monitored using partial flume and the average flow velocity along the main canal was measured using the current meter. The infiltration measurement was conducted at the head, middle, and tail of the scheme within the command area using a double-ring infiltrometer. Soil samples were collected using an auger up to 60cm depth. Climatic and agronomic data were collected from the nearby meteorological station and woreda agricultural office, respectively. CROPWAT was used to determine the water requirement of crops. Results The result showed that the average conveyance efficiency for the lined main canal was 90% and 92% for Mugie and Fesas SSI, respectively. The conveyance efficiency for the unlined main canal was in the order of 86% and 87% for Mugie and Fesas SSI. On the other hand, the average application efficiency and overall efficiency were found to be 56% and 51%, respectively, with storage efficiency of 50% for Mugie irrigation scheme. Similarly, the overall, application and storage efficiencies were found 50%, 54%, and 56%, respectively, for Fesas irrigation scheme. The relative irrigation and water supplies were 1.23 and 3.17, respectively, for Mugie SSI, while the supplies were 0.94 and 2.45, respectively, for Fesas SSI. Conclusions Conveyance efficiency for both Mugie and Fesas schemes was found below standard (95%) and overall efficacy was low as well (~50%). Failure of operating gates in the main canal, overtopping of water from the main canal due to canal siltation, and leakage through the main canals were the main causes for poor performance. Improvement measures are needed for both Mugie and Fesas irrigation schemes and institutional support is vital to improve and maintain the failure of infrastructures for better performance.

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Section: Selection and Evaluation Of Performance Indicatorsmentioning

confidence: 99%

Evaluating the Performance of Small-Scale Irrigation Schemes in Sub Humid Ethiopian Highlands; a case study in Mugie and Fesas

Belay¹,

Assefa

Belay

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The depth of water delivered to the field was recorded using a Parshall flume (Xiao et al, 2015) installed at the entrance of each field during irrigation. The soil moisture content before and after irrigation was identified by the gravimetric method (Fontenelli et al, 2017) to determine the depth of water stored in the root zone by collecting soil samples from 0 to 60 cm depths with 20-cm depth increments.…”

Section: Selection and Evaluation Of Performance Indicatorsmentioning

confidence: 99%

Evaluating the performance of small‐scale irrigation schemes in subhumid Ethiopian highlands

Belay¹,

Assefa

Belay

et al. 2022

Irrigation and Drainage

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This study was conducted to evaluate the performance of two small-scale irrigation (SSI) schemes in the subhumid Ethiopian highlands. Water application at the farm level and flow velocity along the main canal were monitored using a Parshall flume and current meter, respectively. The infiltration was measured at the head, middle and tail of the scheme within the command area using a double-ring infiltrometer. Soil samples were collected using an auger up to 60 cm in depth. Climatic and agronomic data were supplied to the crop water assessment tool (CROPWAT) to determine crop water requirements. The results showed that the average conveyance efficiency for the lined main canal was 90% and 92% for the Mugie and Fesas SSI schemes, respectively. The conveyance efficiency for the unlined main canal was in the order of 86% and 87% for the Mugie and Fesas SSI schemes, respectively. On the other hand, the average application efficiency and overall efficiency were found to be 56% and 51%, respectively, with a storage efficiency of 50% for the Mugie irrigation scheme. Similarly, the overall, application and storage efficiencies were 50%, 54% and 56%, respectively, for the Fesas irrigation scheme. Failure of operating gates, canal siltation and leakage through the main canals were the main causes of poor performance. K E Y W O R D S irrigation scheme performance, small-scale irrigation, subhumid Ethiopian highlands Résumé Cette étude a été réalisée pour évaluer les performances de deux projets d'irrigation à petite échelle (SSI) dans les hauts plateaux subhumides éthiopiens. L'application de l'eau au niveau de la ferme et la vitesse d'écoulement le long du canal principal ont été surveillées à l'aide d'un carneau de Parshall et d'un compteur de courant, respectivement. L'infiltration a été mesurée à la tête, au milieu et à la queue du schéma dans la zone de commande à l'aide d'un infiltrateur à double anneau. Des échantillons de sol ont été prélevés à l'aide d'une auget jusqu'à 60 cm de profondeur. Des données climatiques et agronomiques ont été fournies au CROPWAT pour déterminer les besoins en eau des cultures. Les résultats ont montré que le rendement moyen du transport pour le Article title in French: Evaluation des résultats des projets d'irrigation à petite échelle dans les hauts plateaux subhumides d' Ethiopie.

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Changes in the composition and structure of cell wall polysaccharides from Artemisia annua in response to salt stress

Corrêa-Ferreira

Viudes

Magalhães

et al. 2019

Carbohydrate Research

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Methods of soil moisture maintenance for production of sunflower under controlled conditions

Cited by 3 publications

References 13 publications

Evaluating the Performance of Small-Scale Irrigation Schemes in Sub Humid Ethiopian Highlands; a case study in Mugie and Fesas

Evaluating the Performance of Small-Scale Irrigation Schemes in Sub Humid Ethiopian Highlands; a case study in Mugie and Fesas

Evaluating the performance of small‐scale irrigation schemes in subhumid Ethiopian highlands

Changes in the composition and structure of cell wall polysaccharides from Artemisia annua in response to salt stress

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