Grass Seedling Emergence and Survival from Furrows

Seedling emergence response to temperature in safflower: measurements and modeling

Quantitative information about the response of seedling emergence totemperature for safflower (Carthamus tinctorius L.) is rare. The main objective ofthe present study was to develop a model for predicting days to emergence forsafflower as influenced by the temperature. In this regard, a field experiment with arange of sowing dates and four safflower cultivars were conducted to describe theresp...

Competitive effects of herbaceous vegetation on tree seedling emergence, growth and survival: Does gap size matter?

Question: What is the effect of gap size on the seedling emergence, growth and survival of four common tree species in wooded pastures? Location: A pasture in the Jura mountains, Switzerland. Methods: Seeds were sown in a complete three-way factorial design with eight blocks in May 2003. Each block consisted of a competition treatment (four gap sizes including zero) and a mowing treatment (mown...

Plant Biology: Seedling Emergence through Soil

The resistance encountered by a seedling as it pushes through the soil causes inhibition of stem elongation and stimulates stem thickening, facilitating soil penetration. A new study demonstrates that two proteolytic pathways work in double-negative fashion - one targeting the other - to protect transcription factors central to this response.

Soil Nitrogen Controls on Grass Seedling Tiller Recruitment

Establishment of perennial grass seedlings is critical for repairing rangeland ecosystems in the Western United States. Mineral N in the soil may be one of the controlling factors for seedling establishment and may improve the competitive ability of perennial grasses compared to the annual grass, cheatgrass (Bromus tectorum L.). A greenhouse experiment was conducted to investigate the effects o...

Seedling emergence and growth of sugarbeets as influenced by surface and incorporation applications of petroleum mulches