Effect of soil temperature alteration by soil covers on seedling emergence of wheat (Triticum aestivum L.) sown on two dates

1980 ◽  
Vol 57 (1) ◽  
pp. 125-129 ◽  
Author(s):  
Usha K. Chopra ◽  
T. N. Chaudhary
Keyword(s):  
Triticum Aestivum ◽  
Soil Temperature ◽  
Seedling Emergence ◽  
Triticum Aestivum L ◽  
Soil Covers

Triallate absorption and metabolism in relationship to tolerance in wheat (Triticum aestivum and Triticum durum)

1991 ◽  
Vol 71 (4) ◽  
pp. 1081-1088 ◽  
Author(s):  
Patrick M. McMullan ◽  
John D. Nalewaja
Keyword(s):  
Triticum Aestivum ◽  
Soil Temperature ◽  
Triticum Durum ◽  
Triticum Aestivum L ◽  
Meristematic Tissue ◽  
Influence Of Temperature ◽  
Key Words Wheat ◽  
Shoot Tissue ◽  
Influence Of Temperature On ◽  
Label Content

Research was conducted to determine the influence of temperature on triallate absorption and metabolism in triallate-tolerant durum wheat (Triticum durum L. 'Monroe'), moderately tolerant Hard Red Spring (HRS) wheat (Triticum aestivum L. 'Coteau'), and susceptible HRS wheat, Alex. Uptake of 14C-triallate by the shoot was greater at 24 than at 8 °C by all species. Triallate uptake as influenced by soil temperature is a factor affecting triallate phytotoxicity to wheat. However, Monroe shoot meristematic tissue contained more 14C-label than Alex or Coteau, indicating that 14C-label content in the meristematic tissue was not related to triallate tolerance. Further, the coleoptile tissue of Monroe contained less 14C-label than Alex or Coteau. The coleoptile tissue did not prevent 14C-label entry into shoot tissue. Coleoptile tissue did not seem to be a factor influencing triallate tolerance. 14C-triallate concentration in the shoot related to triallate tolerance at both 8 and 24 °C. Triallate metabolism was apparently involved in differential tolerance among cultivars as the more tolerant Monroe and Coteau had more 14C-metabolites than susceptible Alex. Key words: Wheat, triallate, herbicide, temperature, absorption, metabolism

scholarly journals Winter Wheat (Triticum aestivum L.) Tolerance to Mulch

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2047
Author(s):  
Matthew R. Ryan ◽  
Sandra Wayman ◽  
Christopher J. Pelzer ◽  
Caitlin A. Peterson ◽  
Uriel D. Menalled ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Grain Yield ◽  
Cover Crops ◽  
Seedling Emergence ◽  
Triticum Aestivum L ◽  
Weed Suppression ◽  
Future Research ◽  
Wheat Grain ◽  
No Till

Mulch from cover crops can effectively suppress weeds in organic corn (Zea mays L.) and soybean (Glycine max L.) as part of cover crop-based rotational no-till systems, but little is known about the feasibility of using mulch to suppress weeds in organic winter small grain crops. A field experiment was conducted in central NY, USA, to quantify winter wheat (Triticum aestivum L.) seedling emergence, weed and crop biomass production, and wheat grain yield across a gradient of mulch biomass. Winter wheat seedling density showed an asymptotic relationship with mulch biomass, with no effect at low rates and a gradual decrease from moderate to high rates of mulch. Selective suppression of weed biomass but not wheat biomass was observed, and wheat grain yield was not reduced at the highest level of mulch (9000 kg ha−1). Results indicate that organic winter wheat can be no-till planted in systems that use mulch for weed suppression. Future research should explore wheat tolerance to mulch under different conditions, and the potential of no-till planting wheat directly into rolled-crimped cover crops.

Effects of laboratory germination, soil temperature and moisture content on the emergence of spring wheat

1986 ◽  
Vol 107 (2) ◽  
pp. 431-438 ◽  
Author(s):  
E. M. Khah ◽  
R. H. Ellis ◽  
E. H. Roberts
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Temperature ◽  
Linear Function ◽  
Spring Wheat ◽  
Sandy Loam ◽  
Seedling Emergence ◽  
Triticum Aestivum L ◽  
Obvious Effect ◽  
Soil Temperatures

SummaryIn field investigations in a sandy-loam soil, probit percentage seedling emergence of commercial and aged seed lots of spring wheat (Triticum aestivum L., cv. Timmo) was a positive linear function of probit percentage laboratory germination and mean soil temperature and a negative linear function of percentage soil moisture content over the ranges 12·1–15·5% moisture content and 7·0–11·0 °C. In a laboratory investigation using the same soil a similar form of relationship was observed in six lots over a range of constant soil moisture contents between 10 and 18% and at constant soil temperatures of 8 and 20 °C. In all cases there was no interaction between any of these determinants of seedling emergence.Linear relationships between the mean rate of seedling emergence in the field (i.e. reciprocal of mean emergence time) and probit percentage laboratory germination and mean soil temperature were shown, but there was no obvious effect of mean scil moisture content between 12·1 and 15·5% on rate of field emergence. Seed lots of different percentage laboratory germination had the same base tsmperature for emergence (1·9 °C): differences between seed lots in mean emergence rate were due to different thermal time (day-degree) requirements for emergence; the thermal times required were a function of probit percentage germination in a standard laboratory test. The implications of these results in providing better advice on sowing rates are discussed.

scholarly journals Canadian spring hexaploid wheat (Triticum aestivum L.) cultivars exhibit broad adaptation to ultra-early wheat planting systems.

2021 ◽  
Author(s):  
Graham Robert Stephen Collier ◽  
Dean Spaner ◽  
Robert J. Graf ◽  
Cindy A Gampe ◽  
Brian L Beres
Keyword(s):  
Triticum Aestivum ◽  
Soil Temperature ◽  
Grain Yield ◽  
Great Plains ◽  
Spring Wheat ◽  
Hexaploid Wheat ◽  
Triticum Aestivum L ◽  
Field Trials ◽  
System Stability ◽  
Northern Great Plains

Ultra-early wheat growing systems based on soil temperature triggers for planting instead of arbitrary calendar dates can increase grain yield and overall growing system stability of spring wheat (Triticum aestivum L.) on the northern Great Plains. We conducted field trials at three sites in western Canada from 2017 to 2019 to evaluate the suitability of Canadian spring hexaploid wheat cultivars and market classes for use within ultra-early spring wheat growing systems. All cultivars and classes exhibited improved grain yield stability (lower adjusted coefficient of variation values) and optimal grain yield when planted ultra-early at 2°C soil temperature rather than delaying planting to 8°C.

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