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ECONOMIC INJURY LEVELS: REALITY AND PRACTICALITYPOSTON FL; PEDIGO LP; WELCH SM et al.1983; BULLETIN OF THE ENTOMOLOGICAL SOCIETY OF AMERICA; ISSN 0013-8754; USA; DA. 1983; VOL. 29; NO 1; PP. 49-53; BIBL. 26 REF.Article

MODELE GENERAL DES SEUILS ECONOMIQUES DES POPULATIONS DE RAVAGEURSCHIANG HC.1979; FAO, BULL. PHYTOSANIT.; ITA; DA. 1979; VOL. 27; NO 3; PP. 71-73; BIBL. 9 REF.; 2 ILL.Article

ZUM BEGRIFF DES UNKRAUTS UND UEBER SCHADSCHWELLEN BEI DER UNKRAUTBEKAEMPFUNG = LA NOTION DE MAUVAISE HERBE ET DE SEUIL DE NOCIVITE DANS LA LUTTE CONTRE LES MAUVAISES HERBESEGGERS T; NIEMANN P.1980; BER. LANDWIRTSCH.; DEU; DA. 1980; VOL. 58; NO 2; PP. 264-272; ABS. ENG/FRE; BIBL. 26 REF.Article

THE CONCEPT OF PEST MANAGEMENT-ECONOMIC THRESHOLD LEVELS OF LOSSESGEIER PW.1982; PROT. ECOL.; NLD; DA. 1982; VOL. 4; NO 3; PP. 239-246; BIBL. 35 REF.Conference Paper

THE PROGRESS AND PROBLEMS IN PEST CONTROLPRASAD SK.1974; INDIAN J. ENTOMOL.; ISSN 0367-8288; IND; DA. 1974; VOL. 36; NO 1; PP. 51-60; BIBL. 17 REF.Article

SIMULATED DEFOLIATION AND DEPODDING EFFECTS ON YIELD AND QUALITY OF BALSY LIMA BEANSCOGGIN DL; DIVELY GP.1978; J. NEW YORK ENTOMOL. SOC.; ISSN 0028-7199; USA; DA. 1978; VOL. 86; NO 4; PP. 283Conference Paper

ROLE OF POPULATION QUALITY IN FORECASTING FOR PLANT PROTECTIONFRANZ JM.1980; BULL. OEPP; FRA; DA. 1980; VOL. 10; NO 2; PP. 147-150; ABS. FRE/RUS; BIBL. 15 REF.Article

THE RELATIONSHIP OF PLANT AGE, SOIL TEMPERATURE, AND POPULATION DENSITY OF HETERODERA SCHACHTII ON THE GROWTH OF SUGARBEETGRIFFIN GD.1981; J. NEMATOL.; USA; DA. 1981; VOL. 13; NO 2; PP. 184-191; BIBL. 15 REF.Article

ERMITTLUNG VON BEKAEMPFUNGSSCHWELLEN UND WIRTSCHAFTLICHEN SCHADENSSCHWELLEN FUER MONOKOTYLE UND DIKOTYLE UNKRAEUTER IN WINTERWEIZEN UND-GERSTE. I: ZUR METHODIK DER BESTIMMUNG DER SCHWELLENWERTE UNTER BERUECKSICHTIGUNG WIRTSCHAFTLICHER UND BIOLOGISCH-TECHNISCHER EINFLUSSGROSSEN AM BEISPIEL DES WINTERWEIZENS = DETERMINATION DES SEUILS ECONOMIQUES ET DES NIVEAUX DE DEGAT ECONOMIQUES POUR LES MAUVAISES HERBES MONOCOTYLEDONES ET DICOTYLEDONES CHEZ LE BLE D'HIVER ET L'ORGE DE PRINTEMPS. I. METHODES DE CALCUL DES VALEURS LIMINAIRES EN RELATION AVEC LES INFLUENCES ECONOMIQUES ET BIO-TECHNOLOGIQUES POUR LE BLE D'HIVERBEER E; HEITEFUSS R.1981; Z. PFLANZENKR. PFLANZENSCHUTZ (1970); ISSN 0340-8159; DEU; DA. 1981; VOL. 88; NO 2-3; PP. 65-85; ABS. ENG; BIBL. 3 P.Article

QUANTITATIVE RELATIONSHIP BETWEEN WESTERN CORN ROOTWORM POPULATION AND CORN YIELDCHIANG HC; FRENCH LK; RASMUSSEN DE et al.1980; J. ECON. ENTOMOL.; USA; DA. 1980; VOL. 73; NO 5; PP. 665-666; BIBL. 9 REF.Article

ROLE OF POPULATION QUALITY IN FORECASTING FOR PLANT PROTECTIONFRANZ JM.1980; BULL. OEPP; FRA; DA. 1980; VOL. 10; NO 2; PP. 147-150; ABS. FRE/RUS; BIBL. 15 REF.Article

SIGNIFICATION DE QUELQUES PARAMETRES POUR ESTIMER LE SEUIL DE DEGAT ECONOMIQUE CHEZ LES DEPREDATEURSVRONSKIKH MD; VASIL'EV SV.1983; S'KH. BIOL.; SUN; DA. 1983; VOL. 18; NO 7; PP. 72-82; ABS. ENG; BIBL. 9 REF.Article

THE IMPORTANCE OF ECONOMIC THRESHOLDS IN RICE MANAGEMENTVENUGOPAL RAO N; SUBBA RAO C.1982; INT. PEST CONTROL; ISSN 0020-8256; GBR; DA. 1982; VOL. 24; NO 4; PP. 96-107; 2 P.Article

DETERMINATION OF THRESHOLD LEVELS FOR INTEGRATED PEST CONTROLNARZIKULOV MN; YUNUSOV MK.1981; SOV. AGRIC. SCI.; USA; DA. 1981; NO 2; PP. 36-38; BIBL. 3 REF.;[DOKL. VSES. AKAD. S. KH. NAUK IM. LENINA; SUN; DA. 1981; NO 2; PP. 22-23]Article

GROWTH AND YIELD OF OATS AT A RANGE OF HETERODERA AVENAE DENSITIES AND UNDER DIFFERENT WATERING REGIMESSEINHORST IW.1981; NEMATOLOGICA; NLD; DA. 1981; VOL. 27; NO 1; PP. 52-71; ABS. GER; BIBL. 15 REF.Article

LE PARASITISME ANIMAL: CAS DES NEMATODES PHYTOPHAGESCAUBEL G; RIVOAL R.1982; BULF. TECH. INF.; FRA; DA. 1982; NO 370-372; PP. 467-472; BIBL. 25 REF.Article

GREENBUG ECONOMIC THRESHOLDS IN RESISTANT AND SUSCEPTIBLE VARIETIES OF WHEATSIMON DD; BURTON RL; STARKS KJ et al.1981; J. KANSAS ENTOMOL. SOC.; USA; DA. 1981; VOL. 54; NO 4; PP. 693Conference Paper

BEKAEMPFUNGSRICHTWERTE FUER SCHAEDLINGE DES GETREIDES = SEUIL DE DEGAT ECONOMIQUE POUR LES DEPREDATEURS DES CEREALESWETZEL T; FREIER B.1981; NACHRICHTENBL. PFLANZENSCHUTZ DDR, BERLIN; ISSN 0323-5912; DDR; DA. 1981; VOL. 35; NO 3; PP. 47-50; ABS. ENG/RUS; BIBL. 6 REF.Article

UNPREDICTABLE PENALTIES AT TIME OF SALE APPLIED TO INSECT-INFESTED, FARM-STORED GRAIN IN MINNESOTABARAK AV; HAREIN PK.1981; BULL. ENTOMOL. SOC. AM.; ISSN 0013-8754; USA; DA. 1981; VOL. 27; NO 3; PP. 166-169; BIBL. 6 REF.Article

VALIDATION OF PEST MANAGEMENT MODELSWELCH SM; CROFT BA; MICHELS MF et al.1981; ENVIRON. ENTOMOL.; USA; DA. 1981; VOL. 10; NO 4; PP. 425-432; BIBL. 15 REF.Article

INTEGROPANA OCHRANA ROSTLIN V ZEMEDELSKE VELKOVYROBE CSSR = LUTTE INTEGREE EN GRANDE CULTURE EN TCHECOSLOVAQUIEHRON F.1980; SB. VYS. SK. ZEMED. PRAZE, RADA A: ROSTL. VYROBA; CSK; DA. 1980; NO 32; PP. 181-197; ABS. RUS/ENG; BIBL. 12 REF.Article

PROBLEMS OF ESTIMATING THE NEED FOR AND TIMING OF CONTROL MEASURES AGAINST PESTS AND DISEASES OF CROPSHULL R; DUNNING RA.1980; BULL. OEPP; FRA; DA. 1980; VOL. 10; NO 2; PP. 3-9; ABS. FRE/RUS; BIBL. 7 REF.Article

THE RELATIONSHIP OF HETERODERA SCHACHTII POPULATION DENSITIES TO SUGARBEET YIELDSGRIFFIN GD.1981; J. NEMATOL.; USA; DA. 1981; VOL. 13; NO 2; PP. 180-184; BIBL. 9 REF.Article

METHODE D'ESTIMATION DES DEGATS DE LASPEYRESIA POMONELLA L.ZAPRYANOV A.1981; GRADINAR. LOZAR. NAUKA; BGR; DA. 1981; VOL. 18; NO 4; PP. 18-22; ABS. RUS/ENG; BIBL. 8 REF.Article

ANSATZPUNKTE UND VORAUSSETZUNGEN EINES WIRTSCHAFTLICHEN PFLANZENSCHUTZMITTELEINSATZES = CONDITIONS PRELIMAIRES A UNE UTILISATION ECONOMIQUE DES PESTICIDESZEDDIES J; WAIBEL H.1983; GESUNDE PFLANZ.; DEU; DA. 1983; VOL. 35; NO 6; PP. 145-153; 8 P.; ABS. ENG; BIBL. 5 REF.Article

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