Spring Barley Responses to Nitrogen Fertilizer and Ethephon in Regions with a Short Crop Growing Season

L., B.; Leibovitch, S.; Maloba, W. E.; Smith, Donald L.

doi:10.1111/j.1439-037x.1992.tb01021.x

Cited by 16 publications

(22 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Canada, characterized by more continental conditions, are reported positive effects of split application in wheat on grain protein content (Ma et al. , Zebarth et al. ), but again without an increase in total grain yield.…”

Section: Discussionmentioning

confidence: 99%

Some Agronomic Strategies for Organic Quinoa (Chenopodium quinoa Willd.)

Jacobsen

Christiansen

2016

J Agronomy Crop Science

View full text Add to dashboard Cite

Quinoa is a potential new seed crop for protein feed and human consumption in Europe, with tolerance to a range of abiotic stresses. For this purpose the study was planned to analyse the effect of important agronomic strategies like nitrogen level, N application strategy, row spacing and harvest time on yield and quality of quinoa. The experiments took place in the field of the experimental station of the Faculty of Science, University of Copenhagen. Three levels of organic nitrogen from slurry was used (60, 120 and 180 kg N ha À1 ), supplied either all at once at sowing, or split between sowing and beginning of the reproductive phase. The effect of row spacing and harvest time was studied by harvesting seeds at seed maturity, which occurred 2-3 weeks prior to the mechanical harvest by threshing, and a couple of months after. Yield increased significantly (P ≤ 0.05) with an application up to 180 kg N ha À1 , reaching 2200 kg ha À1 . Increasing N also caused a significantly increased seed weight (up to 3.3 mg) and protein content (up to 17 %). N level did not affect number and amount of weeds. Split application with part of the N applied at bud formation did not have a significant effect on yield. Delayed harvest had a negative influence on seed weight, whereas protein content was stable after harvesting even a month after seed maturity. A late harvest significantly reduced seed germination, being reduced by 50 % after a 2-month delay. A conclusion from this study is that both yield and protein content of seed can be manipulated by N level and application strategy. Harvest time is important for securing a high seed quality measured as seed germination, seed weight and protein content. A fast germination of quinoa is an important characteristic demonstrating that the crop has good possibilities for being well-established in the field when free from weeds at the time of sowing. The choice of row spacing is important and depends on weed control method. Weed control strategy should be developed based on modern precision tools.

show abstract

Section: Discussionmentioning

confidence: 99%

Some Agronomic Strategies for Organic Quinoa (Chenopodium quinoa Willd.)

Jacobsen

Christiansen

2016

J Agronomy Crop Science

View full text Add to dashboard Cite

show abstract

“…The N rate was doubled and the row width was reduced to half compared with CCM, as other research had shown potential response to these treatments (Caldwell and Starrat, 1987;Leibovitch et al 1992;Ma et al 1992 (Grant et al 1985;Rouke 1985;Caldwell and Starrat 1987) (Ma et al 1992) …”

Section: Methodsmentioning

confidence: 99%

Comparison of crop management effects on spring barley cultivars grown on three soil types in southwestern Quebec

Smith¹,

L.²,

Leibovitch³

et al. 1993

Can. J. Plant Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…An increased spike number can result in improved yields even in the absence of lodging (Hill et al 1982). However, ethephon often decreases grain number per spike, and/or the lOOOgrain weight (Moes and Stobbe 1991c;Ma et al 1992). The various responses to ethephon may be due to genotypic sensitivities (Caldwell et al 1988), environmental conditions (Wiersma et al 1986) or both (Caldwell et al 1988).…”

Section: Plant Lodging and Growth Regulatorsmentioning

confidence: 96%

Barley: Physiology of Yield

Smith¹,

Dijak²,

Bulman³

et al. 1999

Crop Yield

Self Cite

View full text Add to dashboard Cite

Physiology describes the operation of a plant at the biochemical, cell, tissue, organ and whole plant levels, recognizing that all of these are under the control of the plant genome. In the case of crop plants we are interested in how the combined operation of all plant's functions leads to the production of the harvestable component which, in cereal crops, is generally grain. Broadly speaking, the most important of the physiological activities in a crop plant with regard to yield are dry matter production, nutrient uptake, plant component partitioning and the processes of development (especially grain filling and the other aspects of yield component development). The developmental processes occur sequentially in time and involve progressive shifts in physiology. As barley (Hordeum vulgare L.) is a feed grain and a major source of malting grain for beer and spirits, aspects of physiology that affect the amount of grain produced and its quality (the amount of energy and protein) are of special interest.

show abstract

Spring Barley Responses to Nitrogen Fertilizer and Ethephon in Regions with a Short Crop Growing Season

Cited by 16 publications

References 23 publications

Some Agronomic Strategies for Organic Quinoa (Chenopodium quinoa Willd.)

Some Agronomic Strategies for Organic Quinoa (Chenopodium quinoa Willd.)

Comparison of crop management effects on spring barley cultivars grown on three soil types in southwestern Quebec

Barley: Physiology of Yield

Contact Info

Product

Resources

About