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Canopy management practices in mulberry: impact on fine and coarse roots

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Title Canopy management practices in mulberry: impact on fine and coarse roots
Not Available
 
Creator R. Kaushal
J. Jayaparkash
D. Mandal.
Ambrish Kumar
N. M. Alam
J. M. S. Tomar
H. Mehta
O. P. Chaturvedi
 
Subject Biomass _ Canopy management _ Coarse roots _ Coppicing _ Fine roots _ Lopping _ Morus alba _ Pollarding turnover
 
Description Not Available
Canopy management practices viz. lopping,
pruning, coppicing and pollarding in trees alter branch
density, height, leaf area index and rooting pattern of the
trees. The present study was conducted to quantify the
impact of canopy management practices and intercropping
on fine and coarse roots distribution in mulberry
(Morus alba). In total, six treatments comprising of three
management practices (pollarding, coppicing and lopping)
and two cropping situations (intercropping and
without intercropping) were evaluated. Vertical and
lateral distribution of fine root biomass (FRB) was
recorded through sequential core method in different
seasons. Coarse root distribution and biomass was
studied using excavation method. Results revealed that
canopy management treatments viz., coppicing and
pollarding reduced the FRB as compared to lopping
treatment in both intercropped and non-intercropped
situation. Results also revealed that majority of the fine
root biomass (67.3%) was confined in 0–15 cm soil layer.
All the canopy management treatments under nonintercropped
plots showed higher production rate as. compared to intercropped plots. Fine root turnover rate
(yr-1 ) was highest (0.592) in lopping treatment in nonintercropped
plots whereas, the minimum turnover rate
was recorded in coppicing treatment (0.331) in nonintercropped
plots. Coarse root biomass was highest in
case of intercropped plots in all the three canopy
management treatments. Pollarding + turmeric cultivation
showed the maximum root biomass followed by
lopping +turmeric intercropping treatment. The main
and primary roots in all the treatments accounted
for [70% biomass except for coppicng + turmeric
treatment, whereas secondary and tertiary roots contributed
about 40% biomass]. All the treatments showed a
pronounced decrease in root biomass with increasing soil
depth and 75–84% of the total root biomass (main + lateral
roots) was allocated in the top 30 cm of the soil
profile. From the study, it can be concluded that tree
management practices have direct impact on fine and
coarse root distribution and should be judiciously used
for avoiding competition in intercropping situation.
Not Available
 
Date 2020-06-04T10:00:19Z
2020-06-04T10:00:19Z
2017-10-22
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36859
 
Language English
 
Relation Not Available;
 
Publisher Not Available