Abstract
THAKUR, P. S. & SEHGAL, S. 2003. Growth, leaf gas exchange and production of biomass in coppiced and pollarded agroforestry tree species. Four coppicing or pollarding treatments (stems cut at heights of 0.5, 1.0, 1.5 and 2.0 m) were applied to four tree species, aged five years old, in an agroforestry plantation. We measured growth, leaf gas exchange characteristics and foliage and branchwood biomass in four important fuel and fodder agroforestry tree species, namely, Grewia optiva, Celtis australis, Bauhinia variegata and Morus alba. Out of the four species, B. variegata transpired the most followed by M. alba, then C. australis and G. optiva. For G. optiva and M. alba, transpiration was higher from plants pollarded at 1.5 or 2.0 m compared with plants pollarded at 1.0 m or coppiced at 0.5 m. Photosynthetic rate was highest in M. alba and lowest in C. australis. In M. alba and G. optiva, higher rates of photosynthesis were observed in trees pollarded at 1.5 and 2.0 m. Water-use efficiency was higher in M. alba and G. optiva than in B. variegata and C. australis. Maximum leaf size was observed in B. variegata, followed by M. alba and G. optiva. Cutting height did not affect leaf size significantly. For M. alba and G. optiva, LAI was highest at cutting heights of 1.5 and 2.0 m. Coppicing and pollarding significantly affected the production of foliage and branchwood biomass. Fodder and fuelwood production from agroforestry plantations would be maximised by planting M. alba or G. optiva and pollarding annually at a height of 2.0 m.
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Claims 13
Claim · model-written summary
Bauhinia variegata transpired the most among the four agroforestry tree species.
- Taxon
- B. variegata
Bauhinia variegatae1 - Outcome
- transpiratione2
- Direction
- transpired the moste1
- Setting
- agroforestry plantatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four coppicing or pollarding treatments (stems cut at heights of 0.5, 1.0, 1.5 and 2.0 m) were applied to four tree species, aged five years old, in an agroforestry plantation”
e1“Out of the four species, B. variegata transpired the most followed by M. alba, then C. australis and G. optiva”
e2“For G. optiva and M. alba, transpiration was higher from plants pollarded at 1.5 or 2.0 m compared with plants pollarded at 1.0 m or coppiced at 0.5 m”
Claim · model-written summary
For Grewia optiva, transpiration was higher in plants pollarded at 1.5 or 2.0 m than in plants pollarded at 1.0 m or coppiced at 0.5 m.
- Taxon
- G. optiva
Grewia optivae2 - Treatment
- pollarded at 1.5 or 2.0 me2
- Outcome
- transpiratione2
- Direction
- highere2
- Comparator
- pollarded at 1.0 m or coppiced at 0.5 me2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“For G. optiva and M. alba, transpiration was higher from plants pollarded at 1.5 or 2.0 m compared with plants pollarded at 1.0 m or coppiced at 0.5 m”
Claim · model-written summary
For Morus alba, transpiration was higher in plants pollarded at 1.5 or 2.0 m than in plants pollarded at 1.0 m or coppiced at 0.5 m.
- Taxon
- M. alba
Morus albae2 - Treatment
- pollarded at 1.5 or 2.0 me2
- Outcome
- transpiratione2
- Direction
- highere2
- Comparator
- pollarded at 1.0 m or coppiced at 0.5 me2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“For G. optiva and M. alba, transpiration was higher from plants pollarded at 1.5 or 2.0 m compared with plants pollarded at 1.0 m or coppiced at 0.5 m”
Claim · model-written summary
Photosynthetic rate was highest in Morus alba.
- Taxon
- M. albaMorus albae3
- Outcome
- Photosynthetic ratee3
- Direction
- higheste3
- Comparator
- C. australise3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Photosynthetic rate was highest in M. alba and lowest in C. australis”
Claim · model-written summary
Photosynthetic rate was lowest in Celtis australis.
- Taxon
- C. australis
Celtis australise3 - Outcome
- Photosynthetic ratee3
- Direction
- loweste3
- Comparator
- M. albae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Photosynthetic rate was highest in M. alba and lowest in C. australis”
Claim · model-written summary
Water-use efficiency was higher in Morus alba than in Bauhinia variegata and Celtis australis.
- Taxon
- M. albaMorus albae4
- Outcome
- Water-use efficiencye4
- Direction
- highere4
- Comparator
- B. variegata and C. australise4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Water-use efficiency was higher in M. alba and G. optiva than in B. variegata and C. australis”
Claim · model-written summary
Water-use efficiency was higher in Grewia optiva than in Bauhinia variegata and Celtis australis.
- Taxon
- G. optivaGrewia optivae4
- Outcome
- Water-use efficiencye4
- Direction
- highere4
- Comparator
- B. variegata and C. australise4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Water-use efficiency was higher in M. alba and G. optiva than in B. variegata and C. australis”
Claim · model-written summary
Maximum leaf size was observed in Bauhinia variegata, followed by Morus alba and Grewia optiva.
- Taxon
- B. variegataBauhinia variegatae5
- Outcome
- leaf sizee5
- Direction
- Maximume5
- Comparator
- M. alba and G. optivae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Maximum leaf size was observed in B. variegata, followed by M. alba and G. optiva”
Claim · model-written summary
Cutting height did not significantly affect leaf size.
- Taxon
- agroforestry tree speciest0
- Treatment
- Cutting heighte6
- Outcome
- leaf sizee6
- Direction
- did not affecte6
Not reportedComparator
Verbatim
t0“coppiced and pollarded agroforestry tree species”
e6“Cutting height did not affect leaf size significantly”
Claim · model-written summary
For Morus alba, LAI was highest at cutting heights of 1.5 and 2.0 m.
- Taxon
- M. albaMorus albae7
- Treatment
- cutting heights of 1.5 and 2.0 me7
- Outcome
- LAIe7
- Direction
- higheste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“For M. alba and G. optiva, LAI was highest at cutting heights of 1.5 and 2.0 m”
Claim · model-written summary
For Grewia optiva, LAI was highest at cutting heights of 1.5 and 2.0 m.
- Taxon
- G. optivaGrewia optivae7
- Treatment
- cutting heights of 1.5 and 2.0 me7
- Outcome
- LAIe7
- Direction
- higheste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“For M. alba and G. optiva, LAI was highest at cutting heights of 1.5 and 2.0 m”
Claim · model-written summary
Coppicing and pollarding significantly affected the production of foliage and branchwood biomass.
- Taxon
- agroforestry tree speciest0
- Treatment
- Coppicing and pollardinge1
- Outcome
- production of foliage and branchwood biomasse1
Not reportedComparatorDirection
Verbatim
t0“coppiced and pollarded agroforestry tree species”
e1“Coppicing and pollarding significantly affected the production of foliage and branchwood biomass”
Claim · model-written summary
Fodder and fuelwood production would be maximised by planting Morus alba or Grewia optiva and pollarding annually at 2.0 m.
- Taxon
- M. alba or G. optivaMorus albaGrewia optivae1
- Treatment
- pollarding annually at a height of 2.0 me1
- Outcome
- Fodder and fuelwood productione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fodder and fuelwood production from agroforestry plantations would be maximised by planting M. alba or G. optiva and pollarding annually at a height of 2.0 m”