scholarly journals Response of wheat growth, grain yield and water use to elevated CO 2 under a Free‐Air CO 2 Enrichment ( FACE ) experiment and modelling in a semi‐arid environment

2015 ◽  
Vol 21 (7) ◽  
pp. 2670-2686 ◽  
Author(s):  
Garry J. O'Leary ◽  
Brendan Christy ◽  
James Nuttall ◽  
Neil Huth ◽  
Davide Cammarano ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use ◽  
Arid Environment ◽  
Wheat Growth ◽  
Free Air ◽  
Face Experiment ◽  
Semi Arid

Nutrient and tillage strategies to increase grain yield and water use efficiency in semi-arid areas

2016 ◽  
Vol 178 ◽  
pp. 137-147 ◽  
Author(s):  
Yanhao Lian ◽  
Shahzad Ali ◽  
Xudong Zhang ◽  
Tianlu Wang ◽  
Qi Liu ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Arid Areas ◽  
Use Efficiency ◽  
Semi Arid

Water use efficiency and crop water balance of rainfed wheat in a semi-arid environment: sensitivity of future changes to projected climate changes and soil type

2015 ◽  
Vol 123 (3-4) ◽  
pp. 565-579 ◽  
Author(s):  
Yanmin Yang ◽  
De Li Liu ◽  
Muhuddin Rajin Anwar ◽  
Garry O’Leary ◽  
Ian Macadam ◽  
...  
Keyword(s):  
Water Balance ◽  
Water Use Efficiency ◽  
Water Use ◽  
Soil Type ◽  
Climate Changes ◽  
Arid Environment ◽  
Crop Water ◽  
Use Efficiency ◽  
Rainfed Wheat ◽  
Semi Arid

Deficit irrigation improves maize yield and water use efficiency in a semi-arid environment

2021 ◽  
Vol 243 ◽  
pp. 106483 ◽  
Author(s):  
Yufeng Zou ◽  
Qaisar Saddique ◽  
Ajaz Ali ◽  
Jiatun Xu ◽  
Muhammad Imran Khan ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Maize Yield ◽  
Arid Environment ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Yield, growth and grain nitrogen response to elevated CO2 in six lentil (Lens culinaris) cultivars grown under Free Air CO2 Enrichment (FACE) in a semi-arid environment

2017 ◽  
Vol 87 ◽  
pp. 50-58 ◽  
Author(s):  
M. Bourgault ◽  
J. Brand ◽  
S. Tausz-Posch ◽  
R.D. Armstrong ◽  
G.L. O’Leary ◽  
...  
Keyword(s):  
Elevated Co2 ◽  
Lens Culinaris ◽  
Co2 Enrichment ◽  
Arid Environment ◽  
Nitrogen Response ◽  
Free Air Co2 Enrichment ◽  
Free Air ◽  
Grain Nitrogen ◽  
Semi Arid

scholarly journals Water use of cowpea under deficit irrigation and cultivation systems in semi-arid region

2019 ◽  
Vol 23 (4) ◽  
pp. 271-276
Author(s):  
Rômulo M. O. de Freitas ◽  
Jeferson L. D. Dombroski ◽  
Francisco C. L. de Freitas ◽  
Narjara W. Nogueira ◽  
Tiago S. Leite ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Leaf Area ◽  
Water Use ◽  
Water Consumption ◽  
Arid Region ◽  
No Tillage ◽  
Use Efficiency ◽  
Semi Arid Region ◽  
Semi Arid

ABSTRACT The resilience of crops to drought depends heavily on the cultural practices adopted, which can have a direct effect on water use efficiency. The aim of this study was to assess the influence of irrigation intervals on the growth, water consumption and water use efficiency of cowpea crops (cv. BRS Guariba) under conventional and no-tillage systems. The experiment was carried out in the semi-arid region of Rio Grande do Norte, Brazil, using a split-plot in a randomised complete block design, with four replications. Treatments consisted of two cultivation systems in the whole plots (conventional and no-tillage) and six irrigation intervals in the subplots (2, 6, 10, 14, 18 and 22 days) which were applied at full bloom. The biomass of the different parts of the plant, leaf area and leaf area index were assessed at 64 days after sowing (DAS) and grain yield, water consumption and water use efficiency at 70 DAS. No-tillage is a promising cultivation technique for cowpea crops, promoting higher grain yield and water use efficiency under semi-arid conditions. This system allows cowpea cultivation with irrigation intervals of 10 or 14 days, with no or small reduction in yield, respectively.

Sulfur and nitrogen responses by barley and wheat on a sandy soil in a semi-arid environment

2020 ◽  
Vol 71 (10) ◽  
pp. 894
Author(s):  
M. K. Conyers ◽  
J. E. Holland ◽  
B. Haskins ◽  
R. Whitworth ◽  
G. J. Poile ◽  
...  
Keyword(s):  
Grain Yield ◽  
Sandy Soil ◽  
Nutrient Content ◽  
Triticum Aestivum L ◽  
Arid Environment ◽  
Yield Response ◽  
Soil Tests ◽  
Hordeum Vulgare L ◽  
Eastern Australia ◽  
Semi Arid

Soil testing guidelines for sulfur (S) under dryland cropping in south-eastern Australia are not well developed. Our objective was to assess the value of soil and tissue tests for S and nitrogen (N), because the two minerals frequently interact), in predicting S-deficient sites and hence increasing the probability of response to application of S (and N). Here, we report three proximal experiments in 2014–16 for barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) on a sandy soil in a semi-arid environment near Merriwagga in western New South Wales. The trials contained a factorial combination of four rates of each of applied N as urea and S as high-grade gypsum. Responses to S were obtained for dry matter (DM) quantity and nutrient content at flowering in 2014, but no grain-yield response was obtained in any year. DM response to applied S was obtained when the concentration of S in the DM was increased from 0.08% in barley and 0.09% in wheat without S application to 0.10–0.11% in both crops with S applied as gypsum. Because we obtained no grain-yield responses to applied S, the 0.10% S in grain was likely to have been adequate for both crops in these experiments. A pool of subsoil S was accessed during each season and this compensated for any DM deficiencies of S by the time of grainfill. Shallow soil tests (0–10 cm) for S can therefore indicate sufficiency but not necessarily deficiency; therefore, in grain-cropping areas, we recommend soil S tests on the same samples as used for deep N testing (to 60 cm) and that an S-budgeting approach be used following the soil tests. Furthermore, for marginal nutritional circumstances such as occurred in this study, the supporting use of N:S ratio is recommended, with values >17 in DM or grain likely to indicate S deficiency for both barley and wheat.

Nitrogen fertilizer and wheat in a semi-arid environment. 3. Soil and cultural factors affecting response

1968 ◽  
Vol 8 (32) ◽  
pp. 340 ◽  
Author(s):  
JS Russell
Keyword(s):  
Grain Yield ◽  
Arid Environment ◽  
Cultural Factors ◽  
Nitrate Content ◽  
Straw Yield ◽  
Independent Variables ◽  
Nitrogen Yield ◽  
Grain Nitrogen ◽  
Semi Arid ◽  
Applied Nitrogen

The response of Gabo wheat to applied nitrogen at 52 sites in the wheat growing areas of South Australia during 1956-61 was examined in relation to soil and cultural factors, as separate groups and together with climatic factors, by a stepwise multiple regression analysis using a computer. The 10 dependent variables were the linear and quadratic coefficients obtained by fitting orthogonal polynomials to response curves of various parameters (grain yield, grain + straw yield, harvest index, grain nitrogen percentage, and grain nitrogen yield) to applied nitrogen at each of 52 sites. The independent variables were 14 soil properties, such as total nitrogen content and initial nitrate status, and 6 cultural characteristics, including date of sowing and period of cultivation. In addition, 23 climatic variables were also included in analysis considering all independent variables. Of the soil variables the most potent was initial nitrate content of the 0-6 inch horizon. Date of sowing was the most potent cultural variable. The proportion of variance explained in the final analysis by the variables examined was greatest for grain nitrogen yield (73.0 per cent) and grain + straw yield (72.1 per cent). The value for grain yield was 48.9 per cent. Differences between nitrogen and phosphorus response in a semi-arid environment and the theoretical and practical implications of these differences are discussed in relation to the predictive value of soil analyses.

Effect of date and final irrigation on yield and yield components of sunflowers in a semi-arid environment

1977 ◽  
Vol 17 (86) ◽  
pp. 482 ◽  
Author(s):  
CL Browne
Keyword(s):  
Water Use ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Arid Environment ◽  
Irrigation Season ◽  
Yield And Yield Components ◽  
Dry Climates ◽  
Total Oil ◽  
Semi Arid

In the semi-arid irrigation areas of south-western New South Wales, many sunflower crops receive no irrigation after flowering. In these dry climates, such premature termination of irrigation could be leading to substantial yield losses. The effect of date of final irrigation on yield and yield components of sunflowers (cv. VNIIMK 6540) was thus examined in two experiments. In the first experiment, seed yield was increased by 19 per cent when final irrigation was applied 22 days after mid-flowering, rather than at mid-flowering. The higher yield resulted principally from an increase in the number of harvestable seeds. Higher frequency of irrigation further increased seed yield by 9 per cent via increase in seed weight. Estimated total consumptive water use by treatments ranged from 546 to 677 mm and the regression of yield (kg ha-1) on water use (mm) was y = 3.9x - 47.4 (r = 0.77, P < 0.001). In the second experiment, in which all treatments were irrigated at a high frequency, seed yield was increased by 30 per cent and total oil yield by 48 per cent when final irrigation was applied 16 days after mid-flowering, rather than at mid-flowering. Both seed weight and seed number were increased by the later irrigation. No further yield improvement was achieved by extending the irrigation season to encompass physiological maturity (a mean 31 days after mid-flowering).

Effect of a Heat Wave on Lentil Grown under Free‐Air CO 2 Enrichment (FACE) in a Semi‐Arid Environment

Crop Science ◽  
2018 ◽  
Vol 58 (2) ◽  
pp. 803-812 ◽  
Author(s):  
M. Bourgault ◽  
M. Löw ◽  
S. Tausz‐Posch ◽  
J. G. Nuttall ◽  
A. J. Delahunty ◽  
...  
Keyword(s):  
Heat Wave ◽  
Arid Environment ◽  
Free Air ◽  
Semi Arid

scholarly journals Effect of weather on yield, heat and water use efficiency of wheat crop in a semi-arid environment

2021 ◽  
Vol 21 (1) ◽  
pp. 89-92
Author(s):  
RACHANA DUBEY ◽  
HIMANSHU PATHAK ◽  
SANATAN PRADHAN ◽  
BIDISHA CHAKRABARTI ◽  
N. MANIKANDAN
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Environment ◽  
Wheat Crop ◽  
Use Efficiency ◽  
Semi Arid
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