scholarly journals High growth temperatures and high soil nitrogen do not alter differences in CO 2 assimilation between invasive Phalaris arundinacea (reed canarygrass) and Carex stricta (tussock sedge)

2017 ◽  
Vol 104 (7) ◽  
pp. 999-1007 ◽  
Author(s):  
Elizabeth F. Waring ◽  
A. Scott Holaday
Keyword(s):  
Soil Nitrogen ◽  
High Growth ◽  
Phalaris Arundinacea ◽  
Reed Canarygrass ◽  
Carex Stricta ◽  
High Soil

Fertility studies of pasture soils in the wet tropical coast of Queensland. 3. Basaltic soils

1972 ◽  
Vol 12 (54) ◽  
pp. 49 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Soil Nitrogen ◽  
Phosphorus Deficiency ◽  
Growth Responses ◽  
Nitrogen Status ◽  
Fertility Status ◽  
High Soil ◽  
Basaltic Soils ◽  
Tropical Coast

Results of thirteen investigations into the fertility status of fifteen basaltic soils in the wet tropical coast of Queensland are presented. Although farming experience has shown these soils to be among the most fertile in the area, a widespread phosphorus deficiency is recorded. Plant growth responses to molybdenum, sulphur and calcium also occurred. The molybdenum deficiency appears to be particularly important in older , pastures where the initailly high soil nitrogen status has been depleted.

Environment and Chlorsulfuron Phytotoxicity

Weed Science ◽  
1985 ◽  
Vol 33 (3) ◽  
pp. 395-399 ◽  
Author(s):  
John D. Nalewaja ◽  
Zenon Woznica
Keyword(s):  
Soil Moisture ◽  
Soil Nitrogen ◽  
Setaria Viridis ◽  
Kochia Scoparia ◽  
Humidity Effects ◽  
High Soil Moisture ◽  
High Soil ◽  
Green Foxtail ◽  
Temperature And Humidity ◽  
Reduced Toxicity

Glasshouse and growth chamber experiments were conducted to determine chlorsulfuron {2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] benzenesulfonamide} phytotoxicity to kochia [Kochia scoparia(L.) Schrad. ♯ KCHSC] and green foxtail [Setaria viridis(L.) Beauv. ♯ SETVI] as influenced by temperature and humidity for 1 week after treatment, and by soil moisture and nitrogen. Chlorsulfuron was more phytotoxic to both kochia and green foxtail at 95 to 100% than at 45 to 50% relative humidity for 1 week after treatment whether at 10, 20, or 30 C. Chlorsulfuron phytotoxicity was similar with all posttreatment temperatures at each humidity, except that phytotoxicity was lower at 30 C than at 10 or 20 C at 90 to 100% humidity. Surfactant added to chlorsulfuron exhanced control of kochia more than that of green foxtail and overcame temperature and humidity effects on chlorsulfuron phytotoxicity. A simulated rainfall of 2 mm after chlorsulfuron application reduced toxicity of chlorsulfuron to green foxtail more than to kochia. Chlorsulfuron was more phytotoxic to green foxtail growing with a high than a low soil nitrogen level. High soil moisture following chlorsulfuron application enhanced phytotoxicity to kochia and green foxtail compared to high soil moisture before treatment.

Effluent effects on the nutrient concentrations and growth of reed canarygrass (Phalaris arundinacea L.) and hybrid poplar (Populus deltoides × P. Petrowskyana L.)

2009 ◽  
Vol 89 (2) ◽  
pp. 223-234 ◽  
Author(s):  
S J Patterson ◽  
D S Chanasyk ◽  
M A Naeth ◽  
E. Mapfumo
Keyword(s):  
Kraft Pulp ◽  
Populus Deltoides ◽  
Hybrid Poplar ◽  
Pulp Mill ◽  
Phalaris Arundinacea ◽  
Nutrient Concentrations ◽  
Leaf Biomass ◽  
Reed Canarygrass ◽  
Kraft Pulp Mill ◽  
Pulp Mill Effluents

Using effluent as a source of irrigation water and to provide nutrients for plant growth is gaining favour as an environmentally positive practice instead of discharging effluent into surface water bodies. A growth chamber study was conducted to evaluate pulp mill wastewater as an irrigation source. This study evaluated the effects of water (TPW), municipal effluent (ME), and Kraft pulp mill effluent (KPME) and waste activated sludge (WAS) at rates of 1.5, 3, and 6 mm d-1 on available soil nutrients, nutrient uptake, and growth of reed canarygrass (Phalaris arundinacea L.) and hybrid poplar (Populus deltoides × P. petrowskyana L.). Increasing the application rate significantly increased biomass for both crops, but the KPME treatment significantly decreased leaf biomass of the hybrid poplar. Effluent applications did not result in toxic accumulations of nutrients within the analyzed tissues for either reed canarygrass or hybrid poplar. Only the WAS treatment significantly increased soil available concentrations of P, K, S, B, Mn, and Zn. Results of the study found lower irrigation rates of Kraft pulp mill effluents could be used as supplementary source and provide nutrients for reed canarygrass and hybrid poplar. Key words: Biomass, effluent irrigation, hybrid poplar, nutrient concentration, reed canarygrass

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