HEDGEROW ORIENTATION AFFECTS CANOPY EXPOSURE, FLOWERING, AND FRUITING OF ANJOU PEAR TREES

被引:23
作者
KHEMIRA, H
LOMBARD, PB
SUGAR, D
AZARENKO, AN
机构
关键词
PYRUS-COMMUNIS; PPF; SUNLIGHT INTERCEPTION;
D O I
10.21273/HORTSCI.28.10.984
中图分类号
S6 [园艺];
学科分类号
0902 ;
摘要
Mature hedgerows of 'Anjou' pear (Pyrus communis L.) trees, planted north (N)-south (S) or east (E)-west (W), were used to study the effect of hedgerow orientation OD fruiting and canopy exposure. In 1990, flower bud density tended to be lower on the E-W rows, especially on their N sides. Fruit set (FS) was highest on the S side of E-W rows and lowest on the N side, while the E and W sides of the N-S rows were intermediate. Crop density (CD) had a similar pattern as FS, with more fruit on the S than on the N side of the E-W rows. CD was more evenly distributed between the sides on the N-S hedgerows. Differences in FS and CD between sides were related to different levels of sunlight interception. Light exposure was lowest on the N sides of the E-W rows and highest on the S sides throughout the growing season and especially toward the equinoxes. Increased exposure to the sun on the S and W sides late in the season led to more fruit with solar injury. Fruit from E-W rows were larger and less firm. Accumulated yields over 11 years showed a 21.4% increase in the N-S rows over those of the E-W rows.
引用
收藏
页码:984 / 987
页数:4
相关论文
共 27 条
[1]  
Auchter EC., 1926, P AM SOC HORTIC SCI, V23, p368
[2]  
CAIN JC, 1971, J AM SOC HORTIC SCI, V96, P664
[3]  
CAIN JC, 1972, NYS AGR EXPT STA SEA, V2, P1
[4]   EFFECTS OF DENSITY, RECTANGULARITY AND ROW ORIENTATION ON APPLE-TREES, MEASURED IN A MULTIVARIATED EXPERIMENTAL-DESIGN [J].
CHRISTENSEN, JV .
SCIENTIA HORTICULTURAE, 1979, 10 (02) :155-165
[5]   Partitioning of leaf nitrogen with respect to within canopy light exposure and nitrogen availability in peach (Prunus persica) [J].
DeJong, T. M. ;
Day, K. R. ;
Johnson, R. S. .
TREES-STRUCTURE AND FUNCTION, 1989, 3 (02) :89-95
[6]   SEASONAL RELATIONSHIPS BETWEEN LEAF NITROGEN-CONTENT (PHOTOSYNTHETIC CAPACITY) AND LEAF CANOPY LIGHT EXPOSURE IN PEACH (PRUNUS-PERSICA) [J].
DEJONG, TM ;
DOYLE, JF .
PLANT CELL AND ENVIRONMENT, 1985, 8 (09) :701-706
[7]  
DEJONG TM, 1990, 1990 P CAL PEAR COUR
[8]  
Devyatov A. S., 1978, Fruit Science Reports, V5, P1
[9]  
FERGUSON J.H.A, 1960, NETHERLANDS JOUR AGRIC SCI, V8, P271
[10]  
HEINICKE DR, 1966, P AM SOC HORTIC SCI, V88, P1