Spatial distribution of fine roots of larch and ash in the mixed plantation stand

2002 ◽  
Vol 13 (4) ◽  
pp. 265-268 ◽  
Author(s):  
Wang Qing-cheng
Keyword(s):  
Spatial Distribution ◽  
Fine Roots ◽  
Mixed Plantation

An In-Situ Rainwater Collection and Infiltration System to Improve Plant-Available Water and Fine Root Growth for Drought Resistance

2020 ◽  
Vol 36 (5) ◽  
pp. 807-814
Author(s):  
Xiaolin Song ◽  
Xiaodong Gao ◽  
Paul Reese Weckler ◽  
Wei Zhang ◽  
Jie Yao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Root Growth ◽  
Root System ◽  
Drought Resistance ◽  
Fine Roots ◽  
Soil Depth ◽  
List Type ◽  
Available Water ◽  
Plant Available Water

HighlightsAn in-situ rainwater collection and infiltration (RWCI) method is a rainwater catchment utilization techniqueRWCI is advantageous for increasing sustainable plant-avaibale water to increase drought resistanceRWCI significantly increased the amount of water and nutrients in the rhizosphere for uptake by apple tree rootsABSTRACT. A two-year field experiment was undertaken to determine the spatial distribution of plant-available water and roots in soil profiles under two rainfall control systems—an in-situ rainwater collection and infiltration (RWCI) method and a semi-circular basin (SCB)—in apple orchards in the Loess Plateau of China. The results showed that the RWCI treatments with a soil depth of 40 cm (RWCI40), 60 cm (RWCI60), and 80 cm (RWCI80) significantly increased plant-available water in different seasons and depths and increased root growth of apple trees in the experimental soil profile (0–200 cm). At 0–200 cm soil depth, then RWCI treatments had significantly higher (91.86%-110.01%) mean plant-available water storage (PAWS) than the SCB treatment in both study years (2015 and 2016). From 0–120 cm soil depth, the RWCI60 treatment had significantly higher growing season mean PAWS than RWCI40 and RWCI80; however, RWCI80 had the highest from 120–200 cm. From 0–60 cm, the RWCI treatments had 25.84%-36.86% a smaller proportion of root system than the SCB treatment. However, from 60–120 cm, the proportion of root system increased by 131.53% (RWCI40), 157.95% (RWCI60) and 129.98% (RWCI80), relative to SCB. From 0–200 cm, the RWCI treatments had 1.49–1.94 times more root dry weight density than the SCB treatment. The highest concentration of fine roots occurred in the RWCI treatments. Thus, RWCI enabled roots to absorb more water and nutrients from a wider wetted area and improved drought resistance. Keywords: Drought resistance, Fine roots, Loess Plateau, Plant-available water, Spatial distribution.

scholarly journals The Spatial Distribution of Root System in M9 Rootstock Is Affected by Apple Cultivar and Tree Age

2019 ◽  
Vol 7 (2) ◽  
pp. 160
Author(s):  
Fadil Thomaj ◽  
Hafuz Domi ◽  
Glenda Sallaku ◽  
Astrit Balliu
Keyword(s):  
Spatial Distribution ◽  
Root System ◽  
Fine Roots ◽  
Old French ◽  
Soil Surface ◽  
Tree Age ◽  
Cumulative Number ◽  
Coarse Roots ◽  
Apple Cultivars ◽  
Late Maturity

The aim of study was to evaluate how different apple cultivars affect root morphology and spatial distribution of rootstock. The experiment was conducted with three different cultivars; ‘Golden delicious’, ‘Gala’ and ‘Starking’ grafted on M9 dwarfing rootstock. Nine and fourteen years old, French vertical axe trained trees were included in the experiment. The trench profile method was chosen to study the morphology of root system and the counted root intersects were divided into three classes; fine roots (<2mm), medium-sized roots (2-5 mm), and coarse roots (>5 mm). To analyze the spatial distribution of root system, the respective cumulative number of fine roots at three successive distances from the base of tree trunk and the cumulative number of fine roots in three successive distances from soil surface were expressed as percentage versus the total fine roots. Significant effects of scion on the total number of fine roots, and as well, on their side and in depth distribution were found. The pattern of root distribution is changing over years, tending to shift the bulk of absorptive roots further from the tank and deeper into the soil. This tendency was more visible to high yielding and late maturity cultivars.

scholarly journals Influence of Fertilizer Management on Sanded Soil and Its Response on Spatial Distribution of fine Roots

2021 ◽  
Vol 9 (2) ◽  
pp. 323
Author(s):  
Huan Pablo De Souza ◽  
Dione Richer Momolli ◽  
Mauro Valdir Schumacher ◽  
Aline Aparecida Ludvichak ◽  
Angélica Costa Malheiros ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Fine Roots ◽  
Fine Root ◽  
Fertilizer Management ◽  
Line Position ◽  
Nutrient Input ◽  
Soil Layers ◽  
Significant Difference ◽  
Physiological Quality

The fine root component, although it represents the lowest proportional biomass in a tree, has an important function in obtaining water and nutrients. In addition, it is an indicator of the physiological quality and growth of a tree. Thus, the objective of the study was to evaluate the spatial distribution of biomass and the density of fine roots in five different fertilizer treatments. The five treatments received increasing amounts of fertilizers. The collections were made between trees in the planting line and between the planting lines. Soil layers of 25 cm x 25 cm x 20 cm (length x width x depth) were collected until reaching a depth of 1 meter. Treatments that had less nutrient input via fertilization showed higher production of fine roots. In general, the line position in the superficial layers showed a higher density of fine roots. There was significant difference between the positions of the land monoliths and between the different layers. Strategically, the lower supply of nutrients via fertilization provided greater investment in the production of fine roots by trees in order to increase the area of absorption and exploration of the soil.

scholarly journals The spatial distribution and seasonal dynamics of fine roots in a youngCaragana korshinskiiplantation

2012 ◽  
Vol 32 (17) ◽  
pp. 5484-5493 ◽  
Author(s):  
张帆 ZHANG Fan ◽  
陈建文 CHEN Jianwen ◽  
王孟本 WANG Mengben
Keyword(s):  
Spatial Distribution ◽  
Seasonal Dynamics ◽  
Fine Roots
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