Growth leaf gas exchanges and production of biomass in coppiced and pollarded agroforesttry tree species

Sehgal S., . and Thakur P. S., . Growth leaf gas exchanges and production of biomass in coppiced and pollarded agroforesttry tree species. pp. 432-440. ISSN 0128-1283

Four coppicing or pollarding treatments (stems cut at heights of0.5. 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 fue1 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.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v15n3/43...

Abstract

Four coppicing or pollarding treatments (stems cut at heights of0.5. 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 fue1 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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Item Type:	Article
AGROVOC Term:	Gas exchange
AGROVOC Term:	Agroforestry
AGROVOC Term:	Pollarding
AGROVOC Term:	Biomass
AGROVOC Term:	Coppice system
AGROVOC Term:	Foliage
AGROVOC Term:	Grewia
AGROVOC Term:	Celtis
AGROVOC Term:	Bauhinia variegata
AGROVOC Term:	Morus alba
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22321

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