Effect of deficit irrigation and soil fertility management on wheat production and water productivity in the Upper Blue Nile Basin, Ethiopia

Asmamaw, Desale Kidane; Janssens, Pieter; Dessie, Mekete; Tilahun, Seifu A.; Adgo, Enyew; Nyssen, Jan; Walraevens, Kristine; Assaye, Habtamu; Yenehun, Alemu; Nigate, Fenta; Cornelis, Wim

doi:10.1016/j.agwat.2022.108077

Cited by 10 publications

(8 citation statements)

References 30 publications

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“…Ten (10) days irrigation interval resulted WP of 1.38 kg/m 3 which is statistically higher than that of 7-days irrigation interval (1.28 kg/m 3 ) and this is also in line with EL-Hwary and Yagoub [32]. Therefore, increasing irrigation interval from seven (7) to ten (10) days-maintained GY and improved the WP of the crop. The interaction of irrigation amount (IA) and irrigation interval (II) showed insignificant differences in both GY and WP.…”

Section: Scenario Study Of Deficit Irrigation Scheduling Using Aquacr...supporting

confidence: 55%

“…Applying deficit irrigation throughout the growth stages of the wheat variety using the validated model affected the grain yield significantly and the WP of the crop at water stresses above 20 %. Increasing the irrigation interval from seven (7) to ten (10) days improved the WP of the crop by 8 %. Therefore, applying an 80 % irrigation requirement throughout the wheat growing season at 10-day intervals could save 25 % of irrigation water, a valuable strategy that will improve irrigation water use without significant yield reduction.…”

Section: Discussionmentioning

confidence: 98%

“…The validated model was used to simulate some deficit irrigation scenarios. Table 10 presents the effects of deficit irrigation at seven (7) and ten (10) days irrigation frequencies on GY and WP of the wheat crop. The result showed that applying DI throughout the wheat's growth period significantly affected the crop's yield and water productivity, as observed in many works [10,28,29].…”

Section: Scenario Study Of Deficit Irrigation Scheduling Using Aquacr...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…It was extensively reported that deficit irrigation significantly affects wheat growth, yield and its components [7,8,9,10]. For many crops, research on DI produced different outcomes worldwide [7] [8]. Therefore, effectively implementing this technique requires precise knowledge of its effects on a particular cultivar under local environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Modelling effects of water stress on the productivity of irrigated wheat (Triticum Aestivum L.) in a semiarid condition of Northeastern Nigeria

Haruna

Bashir

Ismail

et al. 2023

Sinergi

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Lake Chad region is currently experiencing trending issues. Climate change is among the major influencers of these issues that require inevitable consideration for a sustainable ecosystem. Various crop models have been developed and employed in various environmental conditions and management practices, which are cheaper and easier than field experiments. Therefore, crop models could be used to simulate various water management strategies and suggest suitable options. In this work, the FAO AquaCrop model has been evaluated to simulate deficit irrigation (DI) scenarios for wheat crops using data generated from a field experiment. The model simulated grain yield (GY), biomass yield (BMY), biomass production (BMP) and canopy cover (CC) adequately during its calibration and validation. However, its performance in simulating water productivity (WP) and actual crop evapotranspiration (ETa) was low with average r2, NRMSE, model efficiency (EF) and Willmot Index of agreement (d) of 0.58, 11.0 %, -1.40 and 0.69 respectively. The study of DI scenarios using the model revealed that the application of DI throughout the growth stages of the crop could significantly affect GY and WP. The highest GY and WP of 5.3 t/ha and 1.50 kg/m3 were respectively obtained at the application of full irrigation (T100). Increasing DI beyond 20 % depressed both GY and WP significantly. However, increasing the irrigation interval from seven to ten days did not affect GY, thereby improving WP from 1.28 kg/m3 to 1.38 kg/m3. Therefore, applying an 80 % irrigation requirement throughout the wheat growing season at 10-day intervals could save 25 % of irrigation water, a valuable strategy to improve irrigation water use without significant yield reduction. Furthermore, irrigation-related scientists and managers can use the validated model to decide the current and future irrigation water management for similar wheat varieties in similar environmental conditions.

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Section: Scenario Study Of Deficit Irrigation Scheduling Using Aquacr...supporting

confidence: 55%

Section: Discussionmentioning

confidence: 98%

Section: Scenario Study Of Deficit Irrigation Scheduling Using Aquacr...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modelling effects of water stress on the productivity of irrigated wheat (Triticum Aestivum L.) in a semiarid condition of Northeastern Nigeria

Haruna

Bashir

Ismail

et al. 2023

Sinergi

View full text Add to dashboard Cite

show abstract

Optimal irrigation for wheat-maize rotation depending on precipitation in the North China Plain: Evidence from a four-year experiment

Yang,

Fang,

Zhou

et al. 2024

Agricultural Water Management

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Improvement of grain weight and crop water productivity in winter wheat by light and frequent irrigation based on crop evapotranspiration

Bao,

Zhang,

Dai

et al. 2024

Agricultural Water Management

View full text Add to dashboard Cite

Effect of deficit irrigation and soil fertility management on wheat production and water productivity in the Upper Blue Nile Basin, Ethiopia

Cited by 10 publications

References 30 publications

Modelling effects of water stress on the productivity of irrigated wheat (Triticum Aestivum L.) in a semiarid condition of Northeastern Nigeria

Modelling effects of water stress on the productivity of irrigated wheat (Triticum Aestivum L.) in a semiarid condition of Northeastern Nigeria

Optimal irrigation for wheat-maize rotation depending on precipitation in the North China Plain: Evidence from a four-year experiment

Improvement of grain weight and crop water productivity in winter wheat by light and frequent irrigation based on crop evapotranspiration

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