Spring root-zone temperature regulates root growth, nutrient uptake and shoot growth dynamics in grapevines

2015 ◽  
Vol 21 (3) ◽  
pp. 479-489 ◽  
Author(s):  
S.J. Clarke ◽  
K.J. Lamont ◽  
H.Y. Pan ◽  
L.A. Barry ◽  
A. Hall ◽  
...  
Keyword(s):  
Root Growth ◽  
Nutrient Uptake ◽  
Shoot Growth ◽  
Root Zone ◽  
Growth Dynamics ◽  
Root Zone Temperature ◽  
Zone Temperature

The effect of root zone temperature on nutrient uptake of tomato

1990 ◽  
Vol 13 (8) ◽  
pp. 939-956 ◽  
Author(s):  
James A. Tindall ◽  
H.A. Mills ◽  
D.E. Radcliffe
Keyword(s):  
Nutrient Uptake ◽  
Root Zone ◽  
Root Zone Temperature ◽  
Zone Temperature

scholarly journals Response of Peach Seedlings to Root-zone Temperature and Root-applied Growth Regulators

HortScience ◽  
1991 ◽  
Vol 26 (7) ◽  
pp. 870-872 ◽  
Author(s):  
M. Tagliavini ◽  
N.E. Looney
Keyword(s):  
Shoot Growth ◽  
Root Zone ◽  
Dry Weight ◽  
Shoot Elongation ◽  
Fruit Production ◽  
Root Diameter ◽  
Promoting Effect ◽  
Root Volume ◽  
Root Zone Temperature ◽  
Zone Temperature

Root and shoot growth of peach seedlings was strongly suppressed when the roots were held at 8 to 10C. Shoot and root dry weights and root volume increased linearly with increasing root-zone temperature (RZT) to 22C. GA3 at 5.7 μm (2 ppm) added to the aerated full nutrient solution reversed the effect of low RZT on shoot elongation but inhibited root growth at all RZTs. Paclobutrazol (PBZ) (6.8 × 10-3μm) (2 ppb) inhibited shoot elongation at all RZTs and shoot dry weight at 16 and 22C. However, PBZ had no effect on root dry weight accumulation at any RZT. The shoot growth-promoting effect of GA3, relative to control plants, disappeared at higher RZTs, but GA3 reversed the growth-inhibiting effect of PBZ at all RZTs. PBZ increased mean root diameter at all RZTs and significantly increased root volume at 22C. These results show that growth of peach seedlings is profoundly influenced by a cool root-zone environment. The plant growth regulator effects suggest that seedling roots play an important role in whole-plant gibberellin physiology. Some possible implications for fruit production are discussed. Chemical names used: gibberellic acid (GA3); β -[(4-chlorophenyl)methyl]- α -(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol(paclobutrazol,PBZ).

scholarly journals Container Color and Compost Substrate Affect Root Zone Temperature and Growth of “Green Giant” Arborvitae

Agronomy ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 484 ◽  
Author(s):  
Anthony L. Witcher ◽  
Jeremy M. Pickens ◽  
Eugene K. Blythe
Keyword(s):  
Shoot Growth ◽  
Root Zone ◽  
Chemical Properties ◽  
Side Wall ◽  
Nutrient Retention ◽  
Plant Responses ◽  
Root Zone Temperature ◽  
Excessive Heat ◽  
Nursery Production ◽  
Zone Temperature

Container-grown nursery crops are commonly exposed to root zone stress due to inadequate moisture and supraoptimal root zone temperature (RZT). Compost substrates can improve water and nutrient retention but plant responses can vary due to physical and chemical properties. Dark color containers absorb solar radiation through the container side wall leading to excessive heat buildup in the substrate, yet white containers can reduce RZT. Compost substrates and container color were examined for effects on RZT and growth of “Green Giant” arborvitae (Thuja standishii × plicata “Green Giant”). “Green Giant” arborvitae were transplanted into white or black containers (11.3 L) filled with a pine bark substrate (PB) or PB mixed with compost (C) at two different proportions [PB:C (9:1) and PB:C (7:3)]. White containers reduced maximum RZT by up to 7 °C and RZT remained above 38 °C for only 3% of the time compared to 21% of the time in black containers. Shoot growth increased over 50% in white containers compared to black containers. Compost increased substrate volumetric water content (VWC), increased shoot growth by up to 24%, and reduced total irrigation volume by up to 40%. Utilizing white containers for minimizing RZT and compost-amended substrates to maintain adequate VWC can improve root and shoot growth and overall crop quality while reducing nursery production inputs.

Effect of increasing root‐zone temperature on growth and nutrient uptake by ‘gold star’ muskmelon plants1

1998 ◽  
Vol 21 (2) ◽  
pp. 321-328 ◽  
Author(s):  
Rhonda M. Bode Stoltzfus ◽  
Henry G. Taber ◽  
Anthony S. Aiello
Keyword(s):  
Nutrient Uptake ◽  
Root Zone ◽  
Root Zone Temperature ◽  
Gold Star ◽  
Zone Temperature

Effect of Zinc, Phosphorus, and Root-zone Temperature on Nutrient Uptake by Barley1

1987 ◽  
Vol 51 (2) ◽  
pp. 371 ◽  
Author(s):  
S. M. Schwartz ◽  
R. M. Welch ◽  
D. L. Grunes ◽  
E. E. Cary ◽  
W. A. Norvell ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Root Zone ◽  
Root Zone Temperature ◽  
Zone Temperature

scholarly journals Effect of Cooling Root-Zone Temperature on Growth, Yield and Nutrient Uptake in Cucumber Grown in Hydroponic System During Summer Season in Cooled Greenhouse

2018 ◽  
Vol 11 (1) ◽  
pp. 47 ◽  
Author(s):  
Muthir S. Al-Rawahy ◽  
Salim A. Al-Rawahy ◽  
Yaseen A. Al-Mulla ◽  
Saleem K. Nadaf
Keyword(s):  
Nutrient Uptake ◽  
Root Zone ◽  
Growth Yield ◽  
Nutrient Concentrations ◽  
First Year ◽  
Cucumis Sativus L ◽  
Root Zone Temperature ◽  
Hydroponic System ◽  
Dry Matter Weight ◽  
Zone Temperature

Optimum cool root zone temperature positively influences the production of greenhouse vegetables grown during summer/high temperature period under hydroponics system. Hence, the effect of root-zone temperature was investigated on the growth, yield and nutrient uptake of cucumber (Cucumis sativus L.) plants grown in pots filled with perlite medium under recirculating hydroponic system in greenhouse during summer period (June-August) in two consecutive years 2016/2017 and 2017/2018 using three cooling treatments-T1 (22 ºC), T2 (25 ºC) and T3 (28 ºC) and non-cooled treatment T4 (33 ºC) as control in Randomized Complete Design (RCD). All the treatments received the same nutrient concentrations. Significant (p < 0.05) differences were observed for all the characters viz. plant height, leaf number/m2, chlorophyll content, leaf area (cm2), fruit number /m2, yield (t/gh), fresh (g) and dry matter weight (g) of shoot and root at all cooled root-zone temperatures as compared to control in both the years. Plants at cooled root-zone temperature (RZT) of 22 ºC gave high number of fruits/m2 to the extent of 180 in 2016/2017 and 220 in 2017/2018 followed by that at 25 ºC (167, 221) and 28 ºC (178, 143) as compared to those in control (33 ºC) (101,133) in both the years. Similarly, highest fruit yields were found at cooled RZT of 22 ºC (5.0 t/gh) and 28 ºC (4.7 t/gh) in the first year and 22 ºC (6.1 t/gh) and 25 ºC (6.0 t/gh) in the second year. The plants at cooled RZT responded positively and significantly (p < 0.05) in the uptake of all nutrient elements in shoots and roots in comparison with those at non-cooled RZT in both years.

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