Air circulation in growth chambers stunts tomato seedling growth

1992 ◽  
Vol 72 (4) ◽  
pp. 1275-1281 ◽  
Author(s):  
A. Liptay
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Growth Inhibition ◽  
Seedling Growth ◽  
Growth Chamber ◽  
Daily Exposure ◽  
Air Movement ◽  
Movement Effect ◽  
Growth Chambers ◽  
Air Circulation

Air circulation, generally an integral part of environmentally controlled plant growth chambers, inhibited tomato (Lycopersicon esculentum Mill.) seedling growth seismomorphogenically. Tomato seedlings were grown either in a growth chamber having an air movement of 0.5–0.7 m s−1 or in a chamber with no air circulation. Growth inhibition was noticeable with as little as 15 min of daily exposure to air circulation, and a continuous exposure gave the greatest amount of growth inhibition. The air-movement effect on seedling growth was transient and required a continued daily exposure to air movement for growth inhibition. Continuous air circulation inhibited seedling growth to such an extent that in a two-factor experiment (i.e., air movement and water stress) the water-stress effects were completely hidden by the air-movement effect. The results have important implications for tomato plant growth experiments in chambers equipped with air circulation: seedling growth may be affected more by the inherent air circulation in the growth chamber than by an experimental treatment.Key words: Tomato growth inhibition, air movement, seismomorphogenic, short seedlings

scholarly journals AIR CIRCULATION IN GROWTH CHAMBERS STUNTS TOMATO SEEDLING GROWTH

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 684b-684
Author(s):  
Albert Liptay
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Growth Inhibition ◽  
Seedling Growth ◽  
Continuous Exposure ◽  
Tomato Seedling ◽  
Daily Exposure ◽  
Air Movement ◽  
Growth Chambers ◽  
Air Circulation

Air circulation, generally an integral part of environmentally-controlled plant growth chambers, retarded tomato (Lycopersicon lycopersicum Karstens) seedling growth seismomorphogenetically. Continuous air movement at a speed of 0.5 to 0.7 m·s-1 inhibited growth by about 40%. Growth inhibition was noticeable with as little as 15 min of daily exposure to the air circulation; a continuous exposure gave the greatest amount of growth inhibition. The retarding effect of air on seedling growth was transient and required a continued daily exposure to air movement. Continuous aeration of seedlings inhibited growth to such an extent that in a two factor experiment, ie aeration and water stress, the water stress effects were completely masked in the aerated chamber by the aeration effect. The results have important implications for plant growth experiments in chambers equipped with air circulation: seedling growth may be affected more by the air circulation in the growth chamber than by an experimental treatment.

scholarly journals Growth Inhibition of Caladium by High Temperature

HortScience ◽  
1994 ◽  
Vol 29 (7) ◽  
pp. 769-770
Author(s):  
Brent K. Harbaugh ◽  
Michael R. Evans
Keyword(s):  
High Temperature ◽  
Plant Growth ◽  
Growth Inhibition ◽  
Plant Height ◽  
Soil Surface ◽  
Fresh Weight ◽  
Daily Exposure ◽  
Leaf Emergence ◽  
The Hours ◽  
Plant Characteristics

Nonplanted Caladium × hortukmum Birdsey `Candidum' tubers were exposed to 26 (control), 38,43, or 48C for 1,2, or 3 days. Then tubers were planted and forced in a glasshouse for 4 weeks at 18 to 33C (air). Leaf emergence from tubers exposed to 48C for 1 or 2 days required 3-12 days longer than leaf emergence from control tubers. No leaves emerged from tubers treated at 48C for 3 days. Exposing tubers to 38C for 3 days or 43C for 1 day did not affect subsequent plant growth. Exposing tubers to 43C for 2 or 3 days or 48C for 1 or 2 days resulted in plants with reduced shoot fresh weights and fewer leaves ≥ 15 cm. In a second experiment, planted tubers were forced for 10 days at 26C so that roots had developed to the edge of the pot and shoots had emerged to the soil surface. These planted (sprouting) tubers were exposed to 43C for 0,4,8,12,16,20, or 24 hours/day for 1,3, or 5 days and then forced for 7 weeks in a glasshouse. With 3- or 5-day treatments, days to leaf emergence increased as the hours of exposure to 43C increased. Only 33% of planted tubers exposed to 43C for 24 hours/day for 5 days sprouted. Tubers exposed to 43C for≤ 12 hours/day for 3 days produced plants of similar or greater height, numbers of leaves □≥15 cm wide, and shoot fresh weights, but additional hours of daily exposure decreased these plant characteristics. At 5 days, plant height, number of ≥ 15-cm-wide leaves, and shoot fresh weight decreased linearly with increased hours of exposure of tubers to high temperature.

STUDIES ON THE EFFECT OF PSEUDOMONAS GLYCINEA ON SEPTORIA GLYCINES DEVELOPMENT ON FOLIAGE OF THE HAROSOY SOYBEAN GROWN UNDER CONTROLLED ENVIRONMENTAL CONDITIONS

1964 ◽  
Vol 42 (9) ◽  
pp. 1135-1142 ◽  
Author(s):  
W. G. Benedict
Keyword(s):  
Plant Growth ◽  
Environmental Conditions ◽  
Bacterial Blight ◽  
Brown Spot ◽  
Growth Chamber ◽  
Disease Development ◽  
Growth Chambers ◽  
Plant Growth Chamber

Conditions are described for growing soybeans in a plant growth chamber and for the development and study of bacterial blight, Pseudomonas glycinea (Coerper) Stapp, and of brown spot, Septoria glycines Hemmi. An investigation of a possible interrelationship between these two organisms during disease development revealed a marked increase in brown spot infection in the presence of bacterial blight. This resulted from a synergistic bacteria–fungus association of the two pathogens in doubly inoculated foliage of the soybean grown in the plant growth chambers.

Further aspects of the artificial illumination of plant growth chambers

1965 ◽  
Vol 10 (3) ◽  
pp. 212-229 ◽  
Author(s):  
G.A. Carpenter ◽  
L.J. Moulsley ◽  
P.A. Cottrell ◽  
R. Summerfield
Keyword(s):  
Plant Growth ◽  
Artificial Illumination ◽  
Growth Chambers

Effect of Spray Components on Glyphosate Toxicity to Annual Grasses

Weed Science ◽  
1983 ◽  
Vol 31 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Douglas D. Buhler ◽  
Orvin C. Burnside
Keyword(s):  
Soil Moisture ◽  
Water Stress ◽  
Plant Growth ◽  
Surfactant Concentration ◽  
Growth Stage ◽  
Annual Grass ◽  
Spray Solution ◽  
Annual Grasses ◽  
Small Grains ◽  
Carrier Volume

Field and greenhouse research was conducted during 1980 and 1981 to evaluate the effects of carrier volume, surfactant concentration, and treatment date on glyphosate [N- (phosphonomethyl)glycine] toxicity to annual-grass weeds and volunteer small grains. Glyphosate phytotoxicity increased as carrier volume was decreased from 190 to 24 L/ha. The presence of a surfactant in the spray solution did not influence grass control when glyphosate was applied in a carrier volume of 24 L/ha. When glyphosate was applied in 48 or 95 L/ha, the presence of surfactant resulted in better grass control than glyphosate without surfactant. When applied in 190 L/ha, glyphosate with 0.5% (v/v) surfactant gave better grass control than glyphosate alone or commercially formulated glyphosate. When glyphosate was applied to plants under water stress, little control was achieved regardless of plant growth stage. Glyphosate application to grass after head initiation also resulted in reduced control. Maximum weed control with glyphosate was attained when applications were made to seedlings growing actively because of adequate soil moisture and favorable temperatures.

Sign in / Sign up

Export Citation Format

Share Document