The effect of shading and Alar application on apple root: shoot ratios in Western Australia

Cripps, J. E. L.

doi:10.1080/00221589.1972.11514470

Cited by 8 publications

(9 citation statements)

References 1 publication

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“…Colt cherry rootstocks (Prunus avium x P. pseudocerasus) were produced by micropropagation [6], transferred from agar to a loam soil and used for experiments when about 5 months old.…”

Section: Methodsmentioning

confidence: 99%

The effects of (2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyl-2-(1H-1,2,4 triazol-1-yl) pentan-3-ol (Paclobutrazol:PP333) and root pruning on the growth, water use and response to drought of Colt Cherry rootstocks

Asamoah

Atkinson

1985

Plant Growth Regul

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“…Colt cherry rootstocks (Prunus avium x P. pseudocerasus) were produced by micropropagation [6], transferred from agar to a loam soil and used for experiments when about 5 months old.…”

Section: Methodsmentioning

confidence: 99%

The effects of (2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyl-2-(1H-1,2,4 triazol-1-yl) pentan-3-ol (Paclobutrazol:PP333) and root pruning on the growth, water use and response to drought of Colt Cherry rootstocks

Asamoah

Atkinson

1985

Plant Growth Regul

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“…Illumination of apple trees has been evaluated using various types of shade including muslin ( 1), saran cloth (9), slats (17,18,20), and naturally occurring shade (14,15,16,18,20). In spite of the many variables in techniques, types of trees, and parameters measured, certain responses of bearing apple trees to shade seem well established.…”

mentioning

confidence: 99%

Apple Tree Growth, Net Photosynthesis, Dark Respiration, and Specific Leaf Weight as Affected by Continuous and Intermittent Shade1

Barden

1977

J. Amer. Soc. Hort. Sci.

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The effects of 80% shade from saran cloth and slats were very similar on young ‘Delicious’ apple (Malus domestica Borkh.) trees. Shoot-length increase was suppressed about 10% by shade but leaf area was unaffected. Dry weight increase for shaded trees was about 50% of that for trees in full sun. Sun leaves required about 43.1 klx for light saturation and shade leaves needed only about 19.4 klx. Net photosynthesis (Pn) of shade leaves was about 70% of that of sun leaves at light saturation. Dark respiration (Rd) rates were also higher in sun than shade-leaves. Specific leaf weight (SLW) of leaves near full expansion at the start of the experiment increased 15% under shade whereas sun-leaf SLW increased 40% during the experiment. For leaves unfolding under the differential light treatments, SLW of shade leaves averaged only 55% of sun leaves.

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“…We aimed to evaluate light fluxes within these dense canopies and the consequent effects on specific leaf weight and N allocation among leaves within the trees. Specific leaf weight and leaf N expressed on an area basis have been related to light, exposure in other fruit trees (Avery, 1977;Barden, 1974Barden, , 1977Barden, , 1978Crips, 1972;DeJong, 1982;DeJong and Doyle, 1985;DeJong et al, 1989;Jackson and Palmer, 1977;Kappel and Flore, 1983;Marini and Marini, 1983;MacMillen and 'McClendon, 1983;Weinbaum et al, 1989).. Quantitative evaluation of this relationship should be helpful in formulating management practices (i.e., pruning and N nutrition) for walnuts.…”

mentioning

confidence: 99%

Specific Leaf Weight and Nitrogen Allocation Responses to Light Exposure within Walnut Trees

Klein¹,

DeJong²,

Weinbaum³

et al. 1991

HortSci

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Exposure to photosynthetically active radiation and the consequent effect on leaf mass per unit leaf area (SLW) and nitrogen (percent dry weight and μg·mm-2) allocation within tree canopies was investigated in walnut (Juglans regia `Serr' and `Hartley') trees. Percent contribution of discrete light flux densities below light saturation (100-700 μmol·s-1·m-2) to the total light exposure of individual spurs, exposed up to 9 hour·day-1 to saturating light (>700 μmol·s-1·m-2), was minimal (<1 hour), indicating that individual spurs were either exposed or shaded most of the day. SLW and N content per unit leaf area of individual spurs were highly correlated (second-order polynomial curve fit) with light exposure within the tree canopy, indicating uneven allocation of available N for optimal utilization. Nitrogen expressed as percent dry weight was not correlated with light exposure and SLW. Leaf N content per leaf area was highly correlated (linear fit) with SLW.

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The effect of shading and Alar application on apple root: shoot ratios in Western Australia

Cited by 8 publications

References 1 publication

The effects of (2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyl-2-(1H-1,2,4 triazol-1-yl) pentan-3-ol (Paclobutrazol:PP333) and root pruning on the growth, water use and response to drought of Colt Cherry rootstocks

The effects of (2RS, 3RS)-1-(4-chlorophenyl)-4, 4-dimethyl-2-(1H-1,2,4 triazol-1-yl) pentan-3-ol (Paclobutrazol:PP333) and root pruning on the growth, water use and response to drought of Colt Cherry rootstocks

Apple Tree Growth, Net Photosynthesis, Dark Respiration, and Specific Leaf Weight as Affected by Continuous and Intermittent Shade1

Specific Leaf Weight and Nitrogen Allocation Responses to Light Exposure within Walnut Trees

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