Analysis of options for increasing wheat (Triticum aestivum L.) yield in south-eastern Australia: The role of irrigation, cultivar choice and time of sowing

Zeleke, Ketema; Nendel, Claas

doi:10.1016/j.agwat.2015.12.016

Cited by 33 publications

(22 citation statements)

References 38 publications

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“…Also, Saini and Westgate (2000) reported that water stress initially affected kernel development, which resulting in a decrease in sink potential of kernel, and during the linear fill or its later stages of development, it inhibited the enzyme activity directly, thereby causing premature desiccation. Our results are in a good line with those obtained by Musick et al (1994), Kang et al (2002), Abdrabbo et al (2016), Labuschagne et al (2016), Tari (2016) and Zeleke and Nendel (2016). NS, * and ** means not significant, significant at 0.05 and 0.01 probability, respectively.…”

Section: Results and Discussion Effect Of Irrigation Levelssupporting

confidence: 93%

“…since, Giza -168 and Sakha-93 cultivars surpassed the other tested cultivars in spike length, number of grain spike -1 and grain yield. The results of current study are in harmony with those recorded by Abdrabo et al (2016) Zeleke and Nendel (2016). NS, * and ** means not significant, significant at 0.05 and 0.01 probability, respectively.…”

Section: Effect Of Wheat Cultivarssupporting

confidence: 91%

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Response of Two Bread Wheat Cultivars to Foliar Spray by Salicylic and Ascorbic Acids under Water Stress Conditions

2016

AJAS

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Three field experiments were conducted at El-Wady El-Assiuty Experimental Farm, Agriculture Faculty, Assiut University, Assiut Governorate during 2013/2014 and 2014/2015 seasons to study the effect of foliar spray by antioxidant (salicylic and ascorbic acids) on the productivity of two bread wheat cultivars. Each experiment was subjected to one of three levels of evapotranspiration (100% or 75% or 50% of ET i.e. 4800, 3600 and 2400 m 3 , respectively) including two factors i.e wheat cultivars (Masr1 and Shandaweel 1) and three treatments of antioxidant (100 ppm salicylic, 100 ppm ascorbic and 100 ppm salicylic + 100 ppm ascorbic) using randomized complete block design in split plot arrangement with three replications. The obtained results showed that all studied factors and their involved interactions had significant effects on most of studied traits in the two growing seasons. Thus, the highest mean values of grain yield (3.24 and 3.27-ton ha -1 in the first and second seasons, respectively) were obtained from Masr 1 cultivar under 75% ET with 100 ppm Salicylic acid as foliar spray, while, the highest mean values of WUE (1.24 and 1.17 kg m -3 in the first and second seasons, respectively) were obtained from Masr 1 cultivar irrigated by 50% ET and sprayed by 100 ppm ascorbic acid.

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Section: Results and Discussion Effect Of Irrigation Levelssupporting

confidence: 93%

Section: Effect Of Wheat Cultivarssupporting

confidence: 91%

Response of Two Bread Wheat Cultivars to Foliar Spray by Salicylic and Ascorbic Acids under Water Stress Conditions

2016

AJAS

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“…Among the many environmental factors affecting wheat quality, the availability of water and nitrogen (N) is often the most influential [15][16][17][18][19]. It has been widely reported that grain protein content increases under drought stress [15,[20][21][22]; however, responses of gluten-related parameters to reduced water availability are not consistent among previous studies. For instance, Saint Pierre et al [19] and Guttieri et al [15] reported that reduced irrigation did not affect mixograph parameters (e.g., mixograph peak height, an indicator of gluten strength) among various wheat genotypes, whereas Ozturk and Aydin [23] observed increased gluten strength and wet gluten content in response to late season drought stress compared to the full irrigation treatment.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Water and Nitrogen Availability on the Expression of End-Use Quality Parameters of Spring Wheat

et al. 2018

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Wheat (Triticum aestivum L.) grain quality is determined by multiple physical and chemical attributes. However, previous studies mainly focused on protein quantity and composition, which may not be adequate for understanding grain quality, especially end-use quality. Field experiments were conducted at two locations for two years to better understand how and to what extent water and nitrogen (N) availability affect flour end-use quality. Four drought stress levels (i.e., mild, moderate, severe, and well-watered) and four N rates (i.e., zero, low, medium, and high) were applied to two spring wheat cultivars (i.e., Dayn and Egan). Evaluated end-use quality traits, including milling quality, mixograph parameters, flour protein and gluten contents, solvent retention capacity (SRC), and baking quality. Most end-use quality parameters were not significantly different between the well-watered treatment and mild drought stress in both cultivars. Nitrogen availability above the low rate (168 kg N ha−1) failed to further improve most end-use quality traits in either cultivar. Among all the end-use quality traits, lactic acid SRC may be a reliable indicator of flour end-use quality. These results indicate that mild drought stress (i.e., a 25% reduction in irrigation throughout the growing season) may not negatively affect end-use quality and excessive N fertilization offers minimal improvement in end-use quality. Such information could facilitate the development of irrigation and fertilization guidelines targeting at grain quality.

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“…The soil information required by the APSIM model was obtained from the APSOIL data base (https://www.apsim.info/Products/APSoil.aspx). APSIM has been already calibrated and tested for wheat growth, development, and yield over a wide range of environments in Australia [24,25]. In this study, the measured soil water content, grain yield, and dry matter data of the experiment conducted at Wagga Wagga, NSW were used to test the model performance.…”

Section: Simulation Analysismentioning

confidence: 99%

Evaluating Dry Matter Production and Grain Yield of Dual-Purpose Winter Wheat Using Field Experiment and Modelling

Zeleke

2020

Agronomy

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The potential of a winter wheat (Triticum aestivum L.) cultivar Wedgetail to provide grazing and grain yield under different sowing times, grazing times, and watering regimes, under current and future climate, was investigated using field experiment and simulation modelling. For the field experiment, there were two watering treatments (unirrigated (D) and irrigated (I)) and four simulated grazing treatments (ungrazed, simulated grazed at growth stage (GS) 25, simulated grazed at growth stage (GS) 32, and grazed at both GS 25 and GS 32). These were designated as D0, D1, D2, and D3, respectively, for the unirrigated treatment and I0, I1, I2, and I3, respectively, for the irrigated treatment. It was found that the soil water depletion was significantly higher (p < 0.05) for the irrigated/ungrazed treatment than that for the simulated grazed treatment. The crop simulated grazed at GS 25 recovered quicker than the crop grazed at GS 32, especially for the unirrigated treatment. As the sowing time is delayed, above-ground dry matter (AGDM) production decreases. For D2 and D3, the amount of simulated grazed AGDM was 3.46 t ha−1 and 3.55 t ha−1, respectively. For I2 and I3, the amount of simulated grazed AGDM was 4.73 t ha−1 and 4.34 t ha−1, respectively. For D1, simulated grazing increased grain yield by 7%, while for D2 and D3, it increased by 18% and 24%, respectively. For I1, simulated grazing reduced grain yield by 16%, while for I2 and I3, it decreased by 42% and 42%, respectively. Simulation using the Agricultural Production Systems sIMulator (APSIM) showed that, for winter wheat sown in the second week of March, the maximum AGDM expected one in two years at the ends of May, June, and July is 4.5 t ha−1, 5.8 t ha−1, and 6.8 t ha−1, respectively. If the crop is sown mid-April, these values are 0.8 t ha−1, 2.2 t ha−1, and 4.3 t ha−1, respectively. Yield did not show response to times of sowing from March to early April. The maximum value reached was about 4.5 t ha−1 when sown in the fourth week of March, after which it started decreasing and reached the lowest value of about 4.1 t ha−1 when sown by the end of May. The total above-ground dry matter (AGDM) obtained by grazing earlier during the feasible grazing period and again towards the end of this period was not significantly different from grazing only once towards the end of this period. The simulation results showed that winter wheat Wedgetail flowering date was less sensitive to sowing time and that yield did not show a significant response to times of sowing, with the maximum occurring for the fourth week of March sowing and the lowest for the fourth week of May sowing.

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Analysis of options for increasing wheat (Triticum aestivum L.) yield in south-eastern Australia: The role of irrigation, cultivar choice and time of sowing

Cited by 33 publications

References 38 publications

Response of Two Bread Wheat Cultivars to Foliar Spray by Salicylic and Ascorbic Acids under Water Stress Conditions

Response of Two Bread Wheat Cultivars to Foliar Spray by Salicylic and Ascorbic Acids under Water Stress Conditions

The Influence of Water and Nitrogen Availability on the Expression of End-Use Quality Parameters of Spring Wheat

Evaluating Dry Matter Production and Grain Yield of Dual-Purpose Winter Wheat Using Field Experiment and Modelling

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