Effect of root pruning and irrigation on growth, water relations and gas exchange in pear trees
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Effect of root pruning and irrigation on growth, water relations and gas exchange in pear trees. / Wang, Y.; Bertelsen, M. G.; Petersen, K. K.; Liu, F.
VII International Symposium on Irrigation of Horticultural Crops. International Society for Horticultural Science, 2014. p. 471-478 (Acta Horticulturae, Vol. 1038).Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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TY - GEN
T1 - Effect of root pruning and irrigation on growth, water relations and gas exchange in pear trees
AU - Wang, Y.
AU - Bertelsen, M. G.
AU - Petersen, K. K.
AU - Liu, F.
PY - 2014
Y1 - 2014
N2 - Vegetative growth control is crucial for high fruit yield in pear orchards. The use of chemical growth retardants has been prohibited in Danish and European pear production due to increasing concerns about environment and chemical residues on fruits. Root pruning has been proven as a good alternative to control the vegetative growth of fruit trees substituting the use of chemical growth regulators. A field experiment was conducted in 2011 to investigate the effects of root pruning and different irrigation regimes on shoot growth, tree water status, leaf photosynthesis and fruit size and color in a pear orchard. The results showed that root pruning is very effective in controlling the vegetative growth of pear trees. In root pruned pear trees full irrigation and deficit irrigation did not stimulate additional shoot growth. Root pruning decreased the tree water status and stomatal conductance. However, leaf photosynthesis was not affected resulting in improved intrinsic water use efficiency. Root pruning resulted in lower fruit weight, size and less green color. Full irrigation and deficit irrigation tended to improve fruit weight and size in root pruned pear trees, and thus maybe used as an efficient tool to alleviate the negative effects of root pruning on fruit yield and quality.
AB - Vegetative growth control is crucial for high fruit yield in pear orchards. The use of chemical growth retardants has been prohibited in Danish and European pear production due to increasing concerns about environment and chemical residues on fruits. Root pruning has been proven as a good alternative to control the vegetative growth of fruit trees substituting the use of chemical growth regulators. A field experiment was conducted in 2011 to investigate the effects of root pruning and different irrigation regimes on shoot growth, tree water status, leaf photosynthesis and fruit size and color in a pear orchard. The results showed that root pruning is very effective in controlling the vegetative growth of pear trees. In root pruned pear trees full irrigation and deficit irrigation did not stimulate additional shoot growth. Root pruning decreased the tree water status and stomatal conductance. However, leaf photosynthesis was not affected resulting in improved intrinsic water use efficiency. Root pruning resulted in lower fruit weight, size and less green color. Full irrigation and deficit irrigation tended to improve fruit weight and size in root pruned pear trees, and thus maybe used as an efficient tool to alleviate the negative effects of root pruning on fruit yield and quality.
KW - Growth control
KW - Irrigation regimes
KW - Photosynthesis
KW - Shoot water potential
KW - Stomatal conductance
U2 - 10.17660/actahortic.2014.1038.58
DO - 10.17660/actahortic.2014.1038.58
M3 - Article in proceedings
AN - SCOPUS:84905041248
SN - 9789462610262
T3 - Acta Horticulturae
SP - 471
EP - 478
BT - VII International Symposium on Irrigation of Horticultural Crops
PB - International Society for Horticultural Science
Y2 - 16 July 2012 through 20 July 2012
ER -
ID: 271684372