EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Tree growth and fruit production of various organic Asian pear (Pyrus pyrifolia Nakai) cultivars grown under a rain- shelter system


Tree growth and fruit production of various organic Asian pear (Pyrus pyrifolia Nakai) cultivars grown under a rain- shelter system



Journal of Horticultural Science and Biotechnology 90(6): 655-663



ISSN/ISBN: 1462-0316

DOI: 10.1080/14620316.2015.11668728

A study was conducted to compare the effects of an open-field or rain-shelter system on the physiological responses of four Asian pear (Pyrus pyrifolia Nakai) cultivars ('Hanareum', 'Wonhwang', 'Manpungbae', and 'Niitaka') in an organic orchard in 2013 and in 2014. The rain shelter was covered with polyethylene film between 31 March - 4 July each season, then uncovered during the remainder of each growing season. The incidences of fruit disease and insect pests, and fruit quality were measured in 2013. The rain-shelter system increased leaf chlorophyll contents to a SPAD value of 44.0 and rates of CO2 assimilation to 17.0 mu mol m(-2) s(-1) in all four cultivars. It also increased leaf total nitrogen concentrations and dry weights in 'Wonhwang' and 'Niitaka' trees compared to the open field. Freezing temperatures were observed in the open field during flowering. The rain-shelter system resulted in a 10.3% delay in completion of current year shoot extension in all cultivars on 7 August 2014. It also significantly increased fruit yields (22,900 kg ha(-1)), mean fruit fresh weights (582 g), fruit size (94 mm in length and 105 mm in diameter), and total soluble solids contents (12.7 degrees Brix) in 2013 and 2014. The incidence of scab on fruit was reduced by 3.3% in the rain-shelter system in 2013, but scab and rust on leaves and fruit were not completely prevented by this system in September 2014. The incidence of green chafers on leaves was significantly reduced from 23.3% to 51.0% by the rain-shelter system on 15 July 2014. The average income from fruit production in both seasons increased by approx. 138%, 167%, 326%, and 215% for rain-sheltered 'Hanareum', 'Wonhwang', 'Manpungbae', and 'Niitaka' trees, respectively, compared to open-field production.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 066307380

Download citation: RISBibTeXText

Related references

Studies on the inheritance of major characters in oriental pear cultivars pyrus pyrifolia nakai and pyrus pyrifolia x pyrus ussuriensis 1. the inheritance of physiological characteristics colors of leaf fruit skin blooming time maturity and diseases. Research Reports of the Rural Development Administration 33(3 HORTIC): 76-84, 1991

Effects of fruit load on growth, dry matter production and assimilate partitioning in Japanese pear trees (Pyrus pyrifolia Nakai) cv. Kousui grown under film. Journal of the Japanese Society for Horticultural Science 69(6): 724-731, 2000

Spur characteristics, fruit growth, and carbon partitioning in two late-maturing Japanese pear (Pyrus pyrifolia Nakai) cultivars with contrasting fruit size. Journal of the American Society for Horticultural Science 130(2): 252-260, 2005

Spur characteristics, fruit growth, and carbon partitioning in two late-maturing Japanese pear (Pyrus pyrifolia Nakai) cultivars with contrasting fruit size. Journal of the American Society for Horticultural Science 130(2): 252-260, 2005

Studies on the inheritance of major characters in oriental pear cultivars (Pyrus pyrifolia Nakai and P. pyrifolia x P. ussuriensis). 2. The inheritance of characteristics concerned with fruit shape, fruit volume and fruit weight. Research Reports of the Rural Development Administration, Horticulture 34(1): 51-59, 1992

Isolation and identification of phenolic compounds from an Asian pear Pyrus pyrifolia Nakai fruit peel. Food Science and Biotechnology 20(6): 1539-1545, 2011

Pollination Efficiency of Honeybees (Apis mellifera L.) and Bumblebees (Bombus terrestris L.) in Different Cultivars of Asian Pear (Pyrus pyrifolia Nakai). Journal of Apiculture 32(4): 303-314, 2017

Studies on the inheritance of major characters in oriental pear cultivars (Pyrus pyrifolia Nakai and P. pyrifolia X P. ussuriensis). 3. The inheritance of fruit characteristics concerned with sensory characteristics of fruit firmness, soluble solids, pH, astringency, and oxidative browning. RDA Journal of Agricultural Science, Horticulture 35(2): 476-483, 1993

Effect of soil moisture status on stem and fruit diameters, fruit production and quality in Japanese pear (Pyrus pyrifolia Nakai cv. Kosui). Japanese Journal of Soil Science and Plant Nutrition 74(3): 301-308, 2003

Effect of supplemental lighting on fruit production and quality in Japanese pear (Pyrus pyrifolia Nakai cv. Kosui). Japanese Journal of Soil Science and Plant Nutrition 74(3): 309-315, 2003

Genetics of the Japanese pear (Pyrus pyrifolia Nakai var. culta Nakai) and prospects for the improvement of Japanese pear cultivars. Recent Research Developments in Genetics and Breeding Vol 1, Part II: 397-412, 2004

Effect of wax coating on storage life and fruit quality of five Asian pear (Pyrus pyrifolia) cultivars. Acta Horticulturae 279: 511-528, 1990

Seasonal changes of dry matter production and assimilate partitioning in Japanese pear trees (Pyrus pyrifolia Nakai) cv. Kousui and Housui grown under film. Journal of the Japanese Society for Horticultural Science 68(2): 364-372, 1999

Effect of germanium supply by trunk injection on tree growth and fruit quality of 'Niitaka' Asian pear (Pyrus pyrifolia). HortScience 40(4): 1084, 2005

Production of pollen grains from winter-pruned twigs by cutting in Oriental pear (Pyrus pyrifolia Nakai var. culta Nakai). RDA Journal of Agricultural Science, Horticulture 35(2): 471-475, 1993