ASSIMILATE DISTRIBUTION PATTERNS AND CARBOHYDRATE CONCENTRATION CHANGES IN ORGANS OF SOLIDAGO CANADENSIS DURING AN ANNUAL DEVELOPMENTAL CYCLE.BRADBURY IK; HOFSTRA G.1977; CANAD. J. BOT.; CANADA; DA. 1977; VOL. 55; NO 9; PP. 1121-1127; ABS. FR.; BIBL. 14 REF.Article

Response of source-sink relationship in soybean to temperatureHOFSTRA, G.Canadian journal of botany. 1984, Vol 62, Num 1, pp 166-169, issn 0008-4026Article

FOLIAR RESPONSES OF FIVE PLANT SPECIES TO OZONE AND A SULPHUR DIOXIDE-OZONE MIXTURE AFTER A SULPHUR DIOXIDE PRE-EXPOSUREHOFSTRA G; BECKERSON DW.1981; ATMOS. ENVIRON.; ISSN 0004-6981; GBR; DA. 1981; VOL. 15; NO 3; PP. 383-389; BIBL. 32 REF.Article

EFFECT OF SULPHUR DIOXIDE AND OZONE SINGLY OR IN COMBINATION ON LEAF CHLOROPHYLL, RNA, AND PROTEIN IN WHITE BEANBECKERSON DW; HOFSTRA G.1979; CANAD. J. BOT.; CAN; DA. 1979; VOL. 57; NO 18; PP. 1940-1945; ABS. FRE; BIBL. 2 P.Article

RESPONSE OF LEAD DIFFUSIVE RESISTANCE OF RADISH, CUCUMBER AND SOYBEAN TO O₃ AND SO₂ SINGLY OR IN COMBINATIONBECKERSON DW; HOFSTRA G.1979; ATMOSPH. ENVIRONMENT; GBR; DA. 1979; VOL. 13; NO 9; PP. 1263-1268; BIBL. 20 REF.Article

STOMATAL RESPONSES OF WHITE BEAN TO O₃ AND SO₂ SINGLY OR IN COMBINATIONBECKERSON DW; HOFSTRA G.1979; ATMOSPH. ENVIRONMENT; GBR; DA. 1979; VOL. 13; NO 4; PP. 533-535; BIBL. 11 REF.Article

IMPACT OF THE AIR POLLUTANT OZONE ON ACETYLENE REDUCTION AND SHOOT GROWTH OF RED CLOVERENSING J; HOFSTRA G.1982; CAN. J. PLANT PATHOL.; CAN; DA. 1982; VOL. 4; NO 3; PP. 237-242; ABS. FRE; BIBL. 19 REF.Article

EFFECTS OF SULPHUR DIOXIDE AND OZONE, SINGLY OR IN COMBINATION, ON MEMBRANE PERMEABILITYBECKERSON DW; HOFSTRA G.1980; CANAD. J. BOT.; CAN; DA. 1980; VOL. 58; NO 4; PP. 451-457; ABS. FRE; BIBL. 28 REF.Article

OZONE AND BOTRYTIS INTERACTIONS IN ONION-LEAF DIEBACK: OPEN-TOP CHAMBER STUDIES.WUKASCH RT; HOFSTRA G.1977; PHYTOPATHOLOGY; U.S.A.; DA. 1977; VOL. 67; NO 9; PP. 1080-1084; BIBL. 25 REF.Article

THE PARTITIONING OF NET ENERGY RESOURCES IN TWO POPULATIONS OF SOLIDAGO CANADENSIS DURING A SINGLE DEVELOPMENTAL CYCLE IN SOUTHERN ONTARIO.BRADBURY IK; HOFSTRA G.1976; CANAD. J. BOT.; CANADA; DA. 1976; VOL. 54; NO 21; PP. 2449-2456; ABS. FR.; BIBL. 18 REF.Article

LEVELS OF DEICING SALT PRODUCING INJURY ON APPLE TREES = DEGATS CAUSES AUX POMMIERS PAR LES SELS ANTIGELSHOFSTRA G; LUMIS GP.1975; CANAD. J. PLANT SCI.; CANADA; DA. 1975; VOL. 55; NO 1; PP. 113-115; ABS. FR.; BIBL. 5REF.Article

OZONE AND SULPHUR DIOXIDE INTERACTION IN WHITE BEAN AND SOYBEAN.HOFSTRA G; ORMROD DP.1977; CANAD. J. PLANT SCI.; CANADA; DA. 1977; VOL. 57; NO 4; PP. 1193-1198; BIBL. 14 REF.Article

OZONE AND BOTRYTIS SPP. INTERACTION IN ONION LEAF DIEBACK: FIELD STUDIES.WUKASCH RT; HOFSTRA G.1977; J. AMER. SOC. HORTIC. SCI.; U.S.A.; DA. 1977; VOL. 102; NO 5; PP. 543-546; BIBL. 16 REF.Article

VEGETATION DEATH AND ITS IMPORTANCE IN PRIMARY PRODUCTION MEASUREMENTS.BRADBURY IK; HOFSTRA G.1976; ECOLOGY; U.S.A.; DA. 1976; VOL. 57; NO 1; PP. 209-211; BIBL. 5 REF.Article

THE EFFICACY OF THE ANTIOXIDANT ETHYLENE-DIUREA (EDU) COMPARED TO CARBOXIN AND BENOMYL IN REDUCING YIELD LOSSES FROM OZONE IN NAVY BEAMHOFSTRA G; LITTLEJOHNS DA; WUKASH RT et al.1978; PLANT DIS. REPORTER; U.S.A.; DA. 1978; VOL. 62; NO 4; PP. 350-352; BIBL. 8 REF.Article

ROADSIDE WOODY PLANT SUSCEPTIBILITY TO SODIUM AND CHLORIDE ACCUMULATION DURING WINTER AND SPRING.LUMIS GP; HOFSTRA G; HALL R et al.1976; CANAD. J. PLANT SCI.; CANADA; DA. 1976; VOL. 56; NO 4; PP. 853-859; ABS. FR.; BIBL. 11 REF.Article

IDENTIFICATION OF RATE-REDUCING RESISTANCE TO EARLY BLIGHT IN POTATOHOLLEY JD; HALL R; HOFSTRA G et al.1983; CAN. J. PLANT PATHOL.; CAN; DA. 1983; VOL. 5; NO 2; PP. 111-114; ABS. FRE; BIBL. 14 REF.Article

OZONE STIMULATION OF TOMATO STEM ELONGATION = STIMULATION PAR L'OZONE DE L'ELONGATION DE LA TIGE DE TOMATENEIL LJ; ORMROD DP; HOFSTRA G et al.1973; HORTSCIENCE; U.S.A.; DA. 1973; VOL. 8; NO 6; PP. 488-489; BIBL. 10REF.Article

ASSESSMENT OF YIELD LOSSES IN WHITE BEAN DUE TO OZONE USING THE ANTIOXYDANT EDUTOIVONEN PMA; HOFSTRA G; WUKASCH RT et al.1982; CAN. J. PLANT PATHOL.; CAN; DA. 1982; VOL. 4; NO 4; PP. 381-386; ABS. FRE; BIBL. 18 REF.Article

THE RELATIVE SENSITIVITIES OF 33 BEAN CULTIVARS TO OZONE AND SULFUR DIOXIDE SINGLY OR IN COMBINATION IN CONTROLLED EXPOSURES AND TO OXIDANTS IN THE FIELDBECKERSON DW; HOFSTRA G; WUKASCH R et al.1979; PLANT DIS. REPORTER; USA; DA. 1979; VOL. 63; NO 6; PP. 478-482; BIBL. 8 REF.Article

OZONE INJURY ON POTATO FOLIAGE AS INFLUENCED BY THE ANTIOXIDANT EDU AND SULPHUR DIOXIDEHOFSTRA G; WUKASCH RT; DREXLER DM et al.1983; CAN. J. PLANT PATHOL.; CAN; DA. 1983; VOL. 5; NO 2; PP. 115-119; ABS. FRE; BIBL. 14 REF.Article

A PLASTOCHRON MODEL FOR SOYBEAN LEAF AND STEM GROWTH.HOFSTRA G; HESKETH JD; MYHRE DL et al.1977; CANAD. J. PLANT SCI.; CANADA; DA. 1977; VOL. 57; NO 1; PP. 167-175; ABS. FR.; BIBL. 16 REF.Article

The effects of road deicing salt on the levels of ions in roadside soils in southern OntarioHOFSTRA, G; SMITH, D. W.Journal of environmental management. 1984, Vol 19, Num 3, pp 261-271, issn 0301-4797Article

AIR POLLUTION EFFECTS ON AGRICULTURAL CROPS IN ONTARIO: A REVIEWORMROD DP; PROCTOR JTA; HOFSTRA G et al.1980; CAN. J. PLANT SCI.; ISSN 0008-4220; CAN; DA. 1980; VOL. 60; NO 3; PP. 1023-1030; ABS. FRE; BIBL. 2 P.Article

Improvement of uniconazole-induced protection in wheat seedlingsFLETCHER, R. A; HOFSTRA, G.Journal of plant growth regulation (Print). 1990, Vol 9, Num 4, pp 207-212, issn 0721-7595, 6 p.Article