Water management for wheat grown in sandy soil under climate change conditions

Mahmoud, I.Y.; Ouda, Samiha; Taha, Ahmed M.; Afandi, Gamal El; Eid, S.

doi:10.4067/s0718-95162012000200001

Cited by 12 publications

(5 citation statements)

References 26 publications

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“…It was reported that the CropSyst model was appropriate in predicting growth and yield of wheat under different irrigation treatments, where the value of RMSE was 0.36 ton ha −1 and the RMSE value between observed and predicted biomass was 1.27 ton ha −1 [39]. Similar results were obtained with a low RMSE value and higher d-stat value [36,40,41]. within the same column for each trait with the same lower-case letter are not significantly different according to Tukey's HSD (honestly significant difference) test at p ≤ 0.05.…”

Section: Cropsyst Validationsupporting

confidence: 67%

Response of Spring Wheat (Triticum aestivum) to Deficit Irrigation Management under the Semi-Arid Environment of Egypt: Field and Modeling Study

et al. 2021

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In many areas of the world, water shortages prevail and threaten food production. Deficit irrigation was commonly investigated in dry areas as a precious and sustainable production approach. Using the CropSyst model to simulate the effects of different deficit irrigation treatments could help draw conclusions and save time, effort, and money. Therefore, the aims of this research were (i) to calibrate and validate the CropSyst model for wheat under different sustained and phenological stage-based deficit irrigation treatments, (ii) to simulate the impacts of the latter treatments on limiting wheat yield reduction. Two field experiments were conducted in Nubaria (Egypt), representing an arid environment. They included seven irrigation treatments: (1) 100%, (2) 75%, or (3) 50% of crop evapotranspiration (ETc) during the whole crop cycle; (4) 50% ETc at tillering only, or (5) at booting only, or (6) at grain filling only, or (7) at both tillering and grain filling, with the replenishment of 100% ETc to the treatments (4) to (7) in the remaining phenological stages. The results revealed that phenological stage-based deficit irrigation of wheat resulted in lower yield reduction compared to sustained deficit irrigation treatments, with a 6% yield reduction when 50% ETc was applied at the booting stage. Wheat yield loss was reduced to 4 or 6% when 95 or 90% of ETc were applied, respectively. The CropSyst model accurately simulated wheat grain and total dry matter under deficit irrigation with low RMSE value. In conclusion, the CropSyst model can be reliably used for evaluating the strategy of planned deficit irrigation management in terms of wheat production under the arid environment.

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Section: Cropsyst Validationsupporting

confidence: 67%

Response of Spring Wheat (Triticum aestivum) to Deficit Irrigation Management under the Semi-Arid Environment of Egypt: Field and Modeling Study

et al. 2021

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“…These results indicating that, water stress ( I 3 ) had more adverse effect on relative water content, transpiration rate, plant height, number of spikes/m 2 , number of grains/spike, its may be due to the effect of water deficit on pollinated and fertilization processes, then caused decreasing that traits and then decreased 1000-grain weight and grain yield. The previous results are in full agreement with those reported by Abd El-Gawad et al (1998) andEl Far &Teama (1999), Siddique et al (2000) , El-Sayed (2003, Hefnawy & Wahba (2003), Huang GuanHua et al (2008), Lui HaiJun et al (2011, Sayed &Bedaiwy (2011) and Ibrahim et al (2012) Cultivar differences effect Data given in Table 6 clearly indicate the significant differences among wheat cultivars respecting number of grains/spike, 1000-grain weight(g) and grain yield ardab/fed in the two seasons and their combined. The highest value of number of grains/spike in combined data was obtained by Giza 168 (41.03) followed by Sids 12 (39.11) and Gemmeiza 11 (32.77), whereas, Sakha 94 showed lowest value (28.43).…”

Section: Interaction Effectsupporting

confidence: 90%

“…While irrigation with a depth over 1.0E also had negative effect on 1000-grains weight and yield. Ibrahim, et al (2012) found that, irrigating wheat grown in sandy soil with an amount of either 1.0 or 0.8 of ETc with fertigation application in 80% of application time is recommended to enhance growth and yield, and to reduce wheat's damage caused by extreme climate change.…”

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confidence: 99%

Physiological Characteristics, Yield and Yield Attributes of Some New Bread Wheat (Triticum aestivum L.) Cultivars as Affected by Irrigation Regimes under Sprinkler Irrigation System

2012

Egypt. J. Agron.

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The experiments determined the effect of three irrigation regimes (I 1 , I 2 and I 3) on some new bread wheat cultivars (Giza 168, Sakha 94, Sids 12 and Gemmeiza 11) under sprinkler irrigation system in sandy soils. Severe water stress was induced by irrigation every three weeks throughout the season (I 3) using a sprinkler irrigation system in sandy soil conditions. This treatment significantly decreased plant height (55.71 cm), days to 50% heading (84.5 day) and maturity (115.65 day), relative water content (41.09%), transpiration rate (105.65 mg H 2 O/g FW/h), number of spikes/m 2 (220.06), number of grains/ spike (24.57), 1000-grain weight (26.83 g) and grain yield (3.69 ardab/fed) but increased proline content. Lesser reductions were observed for treatments with irrigation every two weeks (I 2) relative to irrigation every week (I 1) throughout the season. These effects were present for both seasons and in a combined analysis. Gemmeiza 11 had the highest plant height (66.66 cm), relative water content (55.38%), and 1000-grain weight (35.2 g). It had a transpiration rate of 132.23 mg H 2 O/g FW/h. Giza 168 had the highest number of spikes/m 2 (263.5) and number of grains/spike (41.03), as well as transpiration rate (134.23 mg H 2 O/g FW/h). Sids 12 had the highest number of spikes/m 2 (263.15) and grain yield (6.33 ardab/fed). Meanwhile, Sakha 94 was latest in heading and maturity, gave the highest proline content (18.53µ moles proline/g FW) and the lowest transpiration rate (121.3 mg H 2 O/g FW/h). Gemmeiza 11 and Giza 168 followed by Sids 12 were tolerant to water stress and Sakha 94 was the most sensitive. Physiological characters, i.e., relative water content (RWC), transpiration rate and proline content may be playing a role in the tolerance of wheat plants to water deficit. It is suggested that breeders can use these characters as selection criteria for drought tolerance.

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“…These points can be spent on almost 44 different food products and used from 27,000 partnered private grocery stores and 5,000 state-owned consumer complexes. The government bears costs of about EGP 5.4 Billion (306$ million) annually on this point system (19,32).…”

Section: A Wheat In Egyptmentioning

confidence: 99%

“…It is very important to get safe food without endangering any other civilians. Moreover, consumer's preferences can be an issue if the food price does not fit with the PPP and national income, therefore, Egypt suffers a huge crisis in food and the most imported grain that causes deficits in the country dollar reserves is wheat (13,19,20,23).…”

Section: B Factors Affecting Wheatmentioning

confidence: 99%

The Interrelationship Between Controlled and Uncontrolled Factors Affecting The Percentage of Value Added of Wheat To GDP In Egypt

Nada,

Tharwat*

2019

IJRTE

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Agriculture had been the essence of the Egyptian economy but recently it had been facing a major decline in its value-added GDP going from 30% to 12% in the year 2016. The cause of this was believed to be due to the agricultural policies that have focused on the production of the local market in the short-term and neglected the long-term aspects and dimensions. This had led the Egyptians to move towards urbanization, which has a growth rate of 22%. However, this shift had affected one of the major strategic crops in the country. This is the wheat agriculture whose importance shows through the wheat consumption-GDP ratio which was about 1.66%, making it the first among all other significant crops. On the other hand, it is noticed that there is a huge gap between the wheat production and wheat consumption in Egypt that is due to the large purchases of imported wheat where Egypt is considered the world's largest wheat importer. This affects both the trade balance as well as the foreign net reserves that the country possesses because of issues with wheat production and economic instability, A wheat production model using Econometrics is being prepared to assess whether the stated variables have a significant impact. Our assumption in this paper is based on the economic theory, we built the multiple regression model by first changing the verbal equation into a simpler, verbal error-free equation, we carried out the work by using the science of “Econometrics” to interpret the reality of the relationship of different variables we will determine in paper to wheat production. This is done by knowing the values of the parameters of each independent variable to be then known as coefficients.

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Water management for wheat grown in sandy soil under climate change conditions

Cited by 12 publications

References 26 publications

Response of Spring Wheat (Triticum aestivum) to Deficit Irrigation Management under the Semi-Arid Environment of Egypt: Field and Modeling Study

Response of Spring Wheat (Triticum aestivum) to Deficit Irrigation Management under the Semi-Arid Environment of Egypt: Field and Modeling Study

Physiological Characteristics, Yield and Yield Attributes of Some New Bread Wheat (Triticum aestivum L.) Cultivars as Affected by Irrigation Regimes under Sprinkler Irrigation System

The Interrelationship Between Controlled and Uncontrolled Factors Affecting The Percentage of Value Added of Wheat To GDP In Egypt

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