Root growth and hydraulic conductivity of southern pine seedlings in response to soil temperature and water availability after planting

New Forests ◽  
2005 ◽  
Vol 30 (2-3) ◽  
pp. 253-272 ◽  
Author(s):  
Mary Anne Sword Sayer ◽  
John C. Brissette ◽  
James P. Barnett
Keyword(s):  
Hydraulic Conductivity ◽  
Root Growth ◽  
Soil Temperature ◽  
Water Availability ◽  
Southern Pine ◽  
Pine Seedlings

Acclimation of cold-stored jack pine and white spruce seedlings: effect of soil temperature on water relation patterns

1985 ◽  
Vol 15 (3) ◽  
pp. 544-550 ◽  
Author(s):  
Steven C. Grossnickle ◽  
Terence J. Blake
Keyword(s):  
Root Growth ◽  
Soil Temperature ◽  
Water Flow ◽  
Flow Resistance ◽  
Stomatal Closure ◽  
White Spruce ◽  
Jack Pine ◽  
Stomatal Opening ◽  
Pine Seedlings ◽  
Soil Temperatures

Cold-stored jack pine (Pinusbanksiana Lamb.) and white spruce (Piceaglauca (Moench) Voss) seedlings were planted in a controlled environmental chamber providing an air temperature of 22 °C and soil temperatures of 22, 16, or 10 °C. After 21 days, observation of root growth for white spruce seedlings was limited at all soil temperatures, whereas jack pine seedlings showed limited root growth at a soil temperature of 10 °C but not at 22 °C. During 21 days of observation after removal from cold storage, stomatal response patterns changed during the transition phase from darkness to first light. Jack pine seedlings showed increasing stomatal opening at first light with greater stomatal opening for seedlings in the 22 °C root-temperature treatment, while all white spruce seedlings exhibited a greater stomatal closure during darkness. In both species, seedlings at lower soil temperatures experienced greater initial water stress than seedlings at higher soil temperatures, the difference being associated with a greater water-flow resistance through the soil–plant–atmosphere continuum (SPAC). In both species, xylem pressure potentials increased with time at all temperatures; a change attributable to a decline in water-flow resistance through the SPAC. The decline in water-flow resistance was possibly due to either a change in the permeability of older suberized roots or, as in jack pine at the higher soil temperature, a significantly greater development of new unsuberized white roots.

scholarly journals COMPARATIVE ASSESSMENT OF TRANSPIRATION, ROOT GROWTH AND HYDRAULIC CONDUCTIVITY OF WHEAT PLANTS DIFFERING IN YIELD UNDER DROUGHT CONDITIONS

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 734-740
Author(s):  
L.N. Timergalina ◽  
◽  
R.S. Ivanov ◽  
V.I. Nikonov ◽  
I.I. Ivanov ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Root Growth ◽  
Water Flow ◽  
Water Availability ◽  
Climatic Conditions ◽  
Comparative Assessment ◽  
Hydrothermal Coefficient ◽  
The Past ◽  
Drought Conditions ◽  
Reduced Water

A comparative assessment of transpiration, root growth, and hydraulic conductivity in wheat plants varieties Bashkirskaya 28 and Omskaya 35was performed under laboratory conditions. Plants of the Bashkirskaya variety were characterized by increased transpiration and hydraulic conductivity under both stress and normal conditions, and the Omskaya 35 variety was characterized by the ability to save water. Comparison of plant productivity over the past 5 years revealed its higher level in plants of the variety Bashkirskaya 28. Hydrothermal coefficient has been below1.0 over the years, indicating that reduced water availability, and a higher yield of plants of the Bashkirskaya 28 variety indicates that the ability to maintain water flow is more important than to save it in these climatic conditions.

Effects of soil temperature and water on maize root growth

1988 ◽  
Vol 111 (2) ◽  
pp. 267-269 ◽  
Author(s):  
S. A. Barber ◽  
A. D. Mackay ◽  
R. O. Kuchenbuch ◽  
P. B. Barraclough
Keyword(s):  
Root Growth ◽  
Soil Temperature ◽  
Maize Root

Machine Vision for Grading Southern Pine Seedlings

1991 ◽  
Vol 31 (2) ◽  
pp. 0642-0646 ◽  
Author(s):  
M. P. Rigney ◽  
G. A. Kranzler
Keyword(s):  
Machine Vision ◽  
Southern Pine ◽  
Pine Seedlings

scholarly journals Implications of Agricultural Gypsum Doses in Physical-Hydric Attributes of a Typic Haplortox and on Root Growth and Soybean Productivity

2019 ◽  
Vol 11 (4) ◽  
pp. 549
Author(s):  
Francisco de Assis Guedes Júnior ◽  
Deonir Secco ◽  
Luiz Antônio Zanão Júnior ◽  
Luciene Kazue Tokura ◽  
Marcos Felipe Leal Martins
Keyword(s):  
Hydraulic Conductivity ◽  
Root Growth ◽  
Block Design ◽  
Total Porosity ◽  
Calcium Deficiency ◽  
Saturated Hydraulic Conductivity ◽  
Soil Density ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Physical Attributes

The response to agricultural gypsum, as a conditioner of the root environment in depth, has been observed for most annual crops. These responses are attributed to the better distribution of roots of the crops in depth in the soil by the reduction of chemical impediments, caused by the exchangeable aluminum and calcium deficiency in these layers, which allows to the plants the use of greater volume of water when they occur summer. In this way, the objective of this study was to evaluate the effects of gypsum doses on physical-hydric attributes, root growth and soybean productivity. The experiment was conducted at the Agronomic Institute of Paraná (IAPAR) in Santa Tereza do Oeste-PR. The soil was classified as Typic Haplortox. Five doses of agricultural gypsum were evaluated: 0; 3; 6; 9 and 12 t ha-1, in outline randomized block design with six repetitions. Soil density, total porosity, macroporosity, microporosity and saturated hydraulic conductivity were evaluated at layers of 0.0-0.1; 0.1-0.2 and 0.2-0.3 m. Soybean productivity and root growth were also evaluated. Data were submitted to regression analysis. The physical attributes soil density, macroporosity and saturated hydraulic conductivity did not differ significantly with the application of the gypsum doses in the 0.0-0.1 and 0.2-0.3 m layers. However, in the 0.1-0.2 m layer, due to pressures imposed by the machines and agricultural implements deforming the soil, there were significant differences in the physical attributes of the density, macroporosity and saturated hydraulic conductivity. There was no significant difference in grain productivity and root growth of soybean.

EFFECT OF SOIL WATER AND TEMPERATURE ON CORN (Zea mays L.) ROOT GROWTH DURING EMERGENCE

1986 ◽  
Vol 66 (1) ◽  
pp. 51-58 ◽  
Author(s):  
H. W. CUTFORTH ◽  
C. F. SHAYKEWICH ◽  
C. M. CHO
Keyword(s):  
Root Growth ◽  
Soil Temperature ◽  
Water Content ◽  
Soil Water ◽  
Zea Mays L ◽  
Rate Sensitivity ◽  
Corn Hybrids ◽  
Soil Water Stress ◽  
Soil Temperatures ◽  
Water Contents

Root growth between germination and emergence for the corn hybrids Pioneer 3995, Northrup King 403 and Pride 1108 was studied. Soil temperatures of 15, 19, 25 and 30.5 °C and a range of soil water contents were used. Decreases in soil temperature and water content both decreased root growth rate. Sensitivity to water content decreased with decreasing soil temperature. All three hybrids responded to soil temperature in the same way. By contrast, Pioneer 3995 was less sensitive to soil water stress than was Northrup King 403, while Pride 1108 was the most sensitive. Key words: Soil water, soil temperature, root growth (early), corn

Sign in / Sign up

Export Citation Format

Share Document