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Progress report on Pear Decline: The university of california research committee on pear decline
California Agriculture, 1965 California Agriculture - All ...
California Agriculture
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Frontiers in Ecology and Evolution, 2016 Apple proliferation (AP) and pear decline (PD) are the most severe diseases in pome fruit growing areas. AP-infected trees show typical symptoms such as witches’ broom, enlarged stipules, tasteless and dwarf fruits.
Margit eRid +5 more
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Pear decline research: —Progress summary
California Agriculture, 1963 California Agriculture - All ...
California Agriculture
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A pressure machine for injecting trees
California Agriculture, 1976 A portable pressure-injection machine has proved to be an effective means of treating pear trees for pear decline and may also be useful for injecting other materials into other trees.
W Reil, J Beutel
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The relation of pear psylla to pear decline … greenhouse tests
California Agriculture, 1963 Extensive research by U.C. entomologists, in both greenhouse and field test plots, on the relation of insects to the cause or spread of pear decline disease indicates that the pear psylla, Psylla pyricola Foerster, is the key to the problem.
D Jensen, W Erwin
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SEASONAL OLIGOPOLY POWER IN THE D'ANJOU PEAR INDUSTRY [PDF]
We estimate seasonal oligopoly power at a disaggregated variety level in the D'Anjou pear market. Our data spans 1993 to 2000, during which time imported pears became more prevalent in the U.S. market.
Winfree, Jason A. +3 more
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Transmission of the European pear decline to the American indicator hosts 'Magness' and 'Precocious' [PDF]
, 1980 Durch seitliches Einpfropfen von Reisern im November und durch Wurzelpfropfungen im Februar wurde versucht, den europäischen Birnenverfall im Gewächshaus auf die amerikanischen Indikatorsorten 'Magness' und 'Precocious' zu übertragen.
Schaper, Ulrike +2 more
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Old home pear: Is proving valuable as a rootstock in combating pear decline and fire blight
California Agriculture, 1961 The Old Home pear variety is resistant to fire blight and pear decline, has a well-shaped trunk, a good scaffold system, and is easily propagated on its own roots by hardwood cuttings.
W Griggs +3 more
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, 1980 Elward Pear, age 74, recollects growing up in Humbermouth, working for the railway, and the effects of the Great Depression and WWII.Side B of cassette tape is ...
Brake, Peter
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