Grain sorghum hybrids under drought stress and full‐irrigation conditions in the Brazilian Semiarid

2021 ◽  
Author(s):  
Cicero Beserra de Menezes ◽  
Karla Jorge da Silva ◽  
Larissa Pereira Ribeiro Teodoro ◽  
Crislene Vieira dos Santos ◽  
Bruno Henrique Mingote Julio ◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Sorghum ◽  
Full Irrigation ◽  
Brazilian Semiarid

Grain Sorghum Water Requirement and Responses to Drought Stress: A Review

2010 ◽  
Vol 9 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Yared Assefa ◽  
Scott A. Staggenborg ◽  
Vara P. V. Prasad
Keyword(s):  
Drought Stress ◽  
Grain Sorghum ◽  
Water Requirement

scholarly journals Performance of grain sorghum hybrids under drought stress using GGE biplot analyses

2017 ◽  
Vol 16 (3) ◽  
Author(s):  
P S C Batista ◽  
C B Menezes ◽  
A J Carvalho ◽  
A F Portugal ◽  
E A Bastos ◽  
...  
Keyword(s):  
Drought Stress ◽  
Grain Sorghum ◽  
Gge Biplot

Moisture Deficits and Grain Sorghum Performance: Drought Stress Conditioning 1

1983 ◽  
Vol 75 (6) ◽  
pp. 997-1004 ◽  
Author(s):  
Dennis P. Garrity ◽  
Charles Y. Sullivan ◽  
Darrell G. Watts
Keyword(s):  
Drought Stress ◽  
Grain Sorghum ◽  
Stress Conditioning

Moisture Stress Effects on Absorption and Translocation of Four Foliar-Applied Herbicides

1988 ◽  
Vol 2 (4) ◽  
pp. 437-441 ◽  
Author(s):  
Daniel B. Reynolds ◽  
Trina G. Wheless ◽  
E. Basler ◽  
Don S. Murray
Keyword(s):  
Drought Stress ◽  
Methyl Ester ◽  
Ethyl Ester ◽  
Indicator Species ◽  
Laboratory Experiments ◽  
Butyl Ester ◽  
Moisture Stress ◽  
Grain Sorghum ◽  
Stress Effects

Laboratory experiments with14C-herbicides were conducted with grain sorghum as an indicator species to determine the effects of imposed moisture stress on absorption, precent recovery, and acropetal and basipetal translocation of the butyl ester of fluazifop, the methyl ester of haloxyfop, the ethyl ester of quizalofop, and sethoxydim. Haloxyfop was the only herbicide where recovery decreased between the 3-and 48-h interval. All plants absorbed more of the herbicide at the 48-h interval than at the 3- or 6-h interval under both stressed and non-stressed conditions. Increased drought stress caused more acropetal movement with fluazifop and sethoxydim and less acropetal movement with quizalofop at the 3-h interval. Basipetal transloation, although different among herbicides, responded similarly to imposed moisture stress, which decreased basipetal translocation approximately 19%.

scholarly journals Studying Maize Growth Indices in Different water Stress Conditions and the use of Humic Acid

2017 ◽  
Vol 10 (01) ◽  
pp. 303-310
Author(s):  
Parisa sharifi
Keyword(s):  
Growth Rate ◽  
Water Stress ◽  
Drought Stress ◽  
Humic Acid ◽  
Irrigation Treatment ◽  
Dry Matter Accumulation ◽  
Full Irrigation ◽  
Growth Indices ◽  
Maize Growth ◽  
Biological Yield

An experiment was conducted in split plots in a completely randomized block design with three replications to evaluate the impact of drought stress on physiological indices of maize growth and the effect of humic acid fertilizer on alleviating drought stress. The main factor included three irrigation levels of 100%, 75%, and 50% and sub-factor was the use and non-use of humic acid. The results showed that in all different levels of irrigation and humic acid treatments, the index of leaf area index (LAI), crop growth rate (CGR) and dry matter accumulation are sigmoid. The highest LAI was (4.5) and biological yield was (15.5 ha) in full irrigation treatment with humic acid, and minimum LAI was (3) with biological yield (8.8 tons per hectare) in 50% irrigation treatment and non-use of humic acid. The results showed that LAI and receiving light were the most important factor affecting the growth indices. Moreover, the highest and lowest CGR CGR, relative growth rate (RGR) RGR and net absorption rate (NAR) were related to full irrigation + consumption of humic acid and 50% irrigation and non-use of humic acid respectively. Overall, the results showed that in without stress treatment (irrigation 100%), the use of humic acid compared to non-use increased RGR, CGR, NAR and LAI at 1.3%, 21%, 8% and 12.5% respectively. This is while in water stress (irrigation 50%), humic acid consumption increased these indices 7%, 25%, 14% and 30% respectively representing a reduction drought stress by humic acid. In general, it could be argued that the use of humic acid, due to adjusting the drought, could have a positive role in water stress to reduce the use of chemical fertilizers, reducing environmental pollution, and to mitigate drought stress, and as is suggested a stable source of supplying nutrients in drought conditions for maize.

scholarly journals Assessing the Climate Change Impacts on Grain Sorghum Yield and Irrigation Water Use under Full and Deficit Irrigation Strategies

2020 ◽  
Vol 63 (1) ◽  
pp. 81-94 ◽  
Author(s):  
Kritika Kothari ◽  
Srinivasulu Ale ◽  
James P. Bordovsky ◽  
Clyde L. Munster
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Irrigation Water ◽  
Deficit Irrigation ◽  
Climate Change Impacts ◽  
Grain Filling ◽  
Growing Season ◽  
Grain Sorghum ◽  
Full Irrigation ◽  
Irrigation Water Use

HighlightsIrrigated grain sorghum yield and irrigation water use decreased under climate change.Increase in growing season temperature beyond 26°C resulted in a sharp decline in grain sorghum yield.Irrigating during early reproductive stages resulted in the most efficient use of limited water.Irrigating to replenish soil water to 80% of field capacity was found suitable for both current and future climates. Groundwater overdraft from the Ogallala Aquifer for irrigation use and anticipated climate change impacts pose major threats to the sustainability of agriculture in the Texas High Plains (THP) region. In this study, the DSSAT-CSM-CERES-Sorghum model was used to simulate climate change impacts on grain sorghum production under full and deficit irrigation strategies and suggest optimal deficit irrigation strategies. Two irrigation strategies were designed based on (1) crop growth stage and (2) soil water deficit. For the first strategy, seven deficit irrigation scenarios and one full irrigation scenario were simulated: three scenarios with a single 100 mm irrigation scheduled between panicle initiation and boot (T1), between boot and early grain filling (T2), and between early and late grain filling (T3) growth stages; three 200 mm irrigation treatments with combinations of T1 and T2 (T4), T1 and T3 (T5), and T2 and T3 (T6); one 300 mm irrigation scenario (T7) that was a combination of T1, T2, and T3; and a full irrigation scenario (T8) in which irrigation was applied throughout the growing season to maintain at least 50% of plant-available water in the top 30 cm soil profile. For the second strategy, the irrigation schedule obtained from auto-irrigation (T8) was mimicked to create a full irrigation scenario (I100) and six deficit irrigation scenarios. In the deficit irrigation scenarios, water was applied on the same dates as scenario I100; however, the irrigation amounts of scenario I100 were reduced by 10%, 20%, 30%, 40%, 50%, and 60% to create deficit irrigation scenarios I90, I80, I70, I60, I50, and I40, respectively. Projected climate forcings were drawn from nine global climate models (GCMs) and two representative concentration pathways (RCP 4.5 and RCP 8.5). Climate change analysis indicated that grain sorghum yield under full irrigation was expected to be reduced by 5% by mid-century (2036 to 2065) and by 15% by late-century (2066 to 2095) under RCP 8.5 compared to the baseline period (1976 to 2005). Simulated future irrigation water demand of grain sorghum was reduced due to the shorter growing season and improved dry matter- and yield-transpiration productivity, likely due to CO2 fertilization. Based on the simulated grain sorghum yield and irrigation water use efficiency, the most efficient use of limited irrigation was achieved by applying irrigation during the early reproductive stages of grain sorghum (panicle initiation through early grain filling). A 20% deficit irrigation scenario was found to be optimal for current and future conditions because it was more water use efficient than full irrigation with a minor yield reduction of <11%. In summary, these results indicated that strategic planning of when and how much to irrigate could help in getting the most out of limited irrigation. Keywords: CERES-Sorghum, Critical growth stages, Crop yield, Global climate model, Irrigation demand, Soil water depletion.

scholarly journals Grain Sorghum Grown Under Drought Stress at Pre- and Post-flowering in Semiarid Environment

2020 ◽  
Vol 12 (4) ◽  
pp. 97
Author(s):  
Andrey Antunes de Souza ◽  
Abner José de Carvalho ◽  
Edson Alves Bastos ◽  
Arley Figueiredo Portugal ◽  
Luciane Gonçalves Torres ◽  
...  
Keyword(s):  
Drought Stress ◽  
High Growth ◽  
Grain Sorghum ◽  
Growth Potential ◽  
Water Restriction ◽  
Flowering Stage ◽  
The Face ◽  
Current Scenario ◽  
Controlled Irrigation ◽  
High Yields

In the current scenario of climate change, sorghum crop has high growth potential, requiring adaptation and selection studies for the various Brazilian production environments. Sorghum is among the most drought-tolerant cereals; however, extended summer can reduce the size and number of grains in the plant, reflecting into poorer yields. Sorghum breeding programs aim to develop hybrids more tolerant to water deficit, to ensure profitable yield even in the face of drought stress. The objective of the present study was to evaluate the effects of water restriction on grain sorghum hybrids in the pre- and post-flowering phases in the Brazilian semiarid. Twenty-five hybrids were evaluated under controlled irrigation conditions in Nova Porteirinha-MG and Teresina-PI. In the Nova Porteirinha, the hybrids were cultivated under conditions of non-drought stress and with drought stress in pre- and post-flowering stage. On the other hand, in Teresina, the experiment took place with non-drought stress and drought stress at post-flowering stage. The experimental design was in randomized complete blocks, in factorial scheme, with three replications. Drought stress reduced grain yield by more than 40%, showing that even being resistant, sorghum is affected by drought. Hybrids 1168093, 1167092, 1236020 and 1423007 showed high yields in the various environments, outyielding the commercial controls, what allows the recommendation of these cultivars for the semiarid areas or late off-season in the Cerrado region.

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