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Home > International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation > COMPARISON OF POTPLANT NURSERY RESULTS

Articles

COMPARISON OF POTPLANT NURSERY RESULTS

Article number

248_58

Pages

459 – 464

Language

Abstract

Firmresults of potplant nurseries differ considerably.
A firm comparison study has been carried out to quantify differences between potplant nurseries, as well as to indicate the most important factors related to these differences.

The variables taken into consideration (fifty-two) explained about ninety percent of the variation in nett firm results.
Scale effects and the age of the glasshouses (modernity) appeared to be the most important factors.
The type of the glasshouses and the rate of specialism were less important for the differences in nett firm results.

Publication

International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation

Authors

J. Benninga

Keywords

Full text

https://doi.org/10.17660/ActaHortic.1989.248.58

Online Articles (59)

2. CONCEPTION OF BIO-ECONOMIC MODELS

H. Krug

3. MODELS AS AN AID TO DECISION MAKING

P. S. B. Harsh | D. J. W. Lloyd | Larry R. Borton

4. TECHNICAL MODELS OF THE GREENHOUSE ENVIRONMENT

T. Takakura

5. MODELS TO PREDICT CROP GROWTH

H.-P. Liebig

6. PROSPECTS OF GERBERA AN ASSESSMENT OF THE CULTURE OF GERBERA IN THE NETHERLANDS

C. Ploeger

7. MODELLING PELARGONIUM ZONALE RESPONSE TO VARIOUS DAY AND NIGHT TEMPERATURES

J. Pytlinski | H. Krug

8. DEVELOPMENT OF A PLANT FACTORY MODEL: I. THE ORGANIZATIONAL AND OPERATIONAL MODEL II. A PLANT GROWTH MODEL: THE SINGLE TRUSS TOMATO CROP

R.J. McAvoy | H.W. Janes | G.A. Giacomelli

9. A MODEL FOR TESTING THE SUITABILITY OF TOMATO HYBRIDS FOR CULTIVATION IN DEFICIENT NATURAL LIGHT

V. Voican

10. REFERENCE YEAR FOR DUTCH GREENHOUSES

J.J.G. Breuer | N.J. van de Braak

11. MODEL OF LIGHT ENVIRONMENT IN GREENHOUSES WITH EMPHASIS ON THE ROLE OF REFLECTION

K. Kurata

12. ARTIFICIAL LIGHT SYSTEMS

J. Meyer | C. Dumke

13. A 2ND GENERATION STATIC MODEL FOR PREDICTING GREENHOUSE ENERGY INPUTS, AS AN AID FOR PRODUCTION PLANNING

O. Jolliet | J.-B. Gay | G.L. Munday

14. A SUPPORT SYSTEM FOR NATURAL VENTILATION DESIGN OF GREENHOUSES BASED ON COMPUTATIONAL AERODYNAMICS

L. Okushima | S. Sase | M. Nara

15. MODEL FOR THE SIMULATION OF INTERNAL TRANSPORT IN POTPLANT NURSERIES

B. Elsner | C. Reuter

16. A METHOD TO CALCULATE THE ECONOMIC POSSIBILITIES OF HEAT STORAGE AND CO₂ DISTRIBUTION IN GLASSHOUSES

P. C.M. Vermeulen

17. MARKET MODELS FOR ANALYZING AND FORECASTING THE PRICES OF HORTICULTURAL CROPS

T. Janecke

18. DEVELOPMENT OF PLANNING MODELS – METHODOLOGICAL ASPECTS

H.-P. Liebig

19. PRODUCTION PLANNING – GERMINATION PERIOD (TEMPERATURE REACTION)

H. Krug | H.-P. Liebig | E. Bazlen

20. PRODUCTION PLANNING – TRANSPLANT PERIOD (EMERGENCE TO TRANSPLANT SIZE)

H. Krug | H.-P. Liebig

21. PRODUCTION PLANNING – MAIN GROWTH PERIOD (RADISH)

H. Krug | H.-P. Liebig

22. MODEL OF CUCUMBER GROWTH AND PREDICTION OF YIELDS

H.-P. Liebig

23. A BIO-ECONOMIC MODEL FOR HEATED GLASSHOUSE TOMATOES.

T. Biemond | W.G. Trap

24. PRODUCTION PLANNING – CO₂ ENRICHMENT

W. Mann | H. Krug

25. SUMMARY OF DISCUSSION GROUP: PRODUCTION PLANNING

H. Challa | G.R. Hack | S. Gollwitzer

26. MODELLING FOR CROP GROWTH CONTROL

H. Challa

27. ON-LINE CLIMATE CONTROL

H.-J. Tantau

28. DYNAMIC OPTIMAL CONTROL OF PLANT PRODUCTION

E. Berg | W. Lentz

29. SIMULATION OF PLANT GROWTH BASED ON METHODS OF PLANT GROWTH ANALYSIS EXEMPLARY FOR RADISH

E. Lederle

30. A PREDICTION MODEL FOR FLORAL DEVELOPMENT OF SENECIO X HYBRIDUS HYL. ‘MOLLS STAM’

R.U. Larsen

31. A DYNAMIC SIMULATION MODEL FOR GREENHOUSE CUCUMBER (CUCUMIS SATIVUS L.): VALIDATION OF THE SUBMODEL FOR CROP PHOTOSYNTHESIS

E.M. Nederhoff | H. Gijzen | J. Vegter

32. INTEREST OF A CARBON BALANCE MODEL FOR ON-LINE GROWTH CONTROL : THE EXAMPLE OF A DAYLIGHT DEPENDENT NIGHT TEMPERATURE CONTROL

C. Gary

33. DYNAMIC SIMULATION OF DRY MATTER DISTRIBUTION IN GREENHOUSE CROPS

L.F.M. Marcelis | A.N.M. de Koning | E. Heuvelink

34. TEMPERATURE INTEGRATION BY KOHLRABI GROWTH

H.-P. Liebig

35. MODELING TOMATO GROWTH FOR OPTIMIZING GREENHOUSE TEMPERATURES AND CARBON DIOXIDE CONCENTRATIONS

J.W. Jones | E. Dayan | H. Van Keulen | H. Challa

36. DYNAMIC MODEL OF CO₂ UPTAKE BASED ON SYSTEM IDENTIFICATION

Y. Hashimoto | Y. Yi

37. MODEL BASED DESIGN OF OPTIMAL MULTIVARIABLE CLIMATE CONTROL SYSTEMS

E.J. van Henten

38. OPTIMAL MANAGEMENT OF TOMATO GROWTH IN GREENHOUSES

G. Shina | I. Seginer

39. SIMULATION OF CO₂ CONSUMPTION IN GREENHOUSES

G. Houter | H. Gijzen | E.M. Nederhoff | P.C.M. Vermeulen

40. ON-LINE CONTROL OF CO₂ ENRICHMENT IN PROTECTED CULTIVATION

G. Alscher | H. Krug

41. THE EFFECT OF TEMPERATURE ON FRUIT GROWTH AND FRUIT LOAD OF TOMATO.

A.N.M. de Koning

42. ON-LINE MEASUREMENT OF PLANT GROWTH IN THE GREENHOUSE

G.R. Hack

43. LIMITS OF A SHORT-TERM TEMPERATURE DECREASE AS A BASE FOR ON-LINE CONTROL

E. Rietze | H.-J. Wiebe

44. TEMPERATURE CONTROL TO AVOID BOLTING OF KOHLRABI USING A MODEL OF VERNALIZATION

H.-J. Wiebe | H.-P. Liebig

45. MODELLING OF WATER POTENTIAL AND WATER UPTAKE RATE OF GREENHOUSE TOMATO PLANTS

L.G.G. Batta

46. STOMATAL REGULATION IN PROTECTED CROPS: ANALYSIS AND SIMULATION

M. Aubinet | D. DeHalleux | J. Deltour | J. Nijskens

47. CROP MODELLING IN THE USA

B. Acock

48. GROWTH AND YIELD CONTROL OF GREENHOUSE VEGETABLES ON THE BASIS OF YIELD MODELS IN THE GDR

F. Göhler

49. MODELS OF PLANT PRODUCTION AND EXPERT SYSTEMS IN HORTICULTURE IN JAPAN

K. Kurata

50. THE RATIONALE FOR ADOPTING A MODULAR GENERIC STRUCTURE FOR CROP SIMULATORS

B. Acock | James F. Reynolds

51. TRANSFERABILITY OF PLANT REACTION PARAMETERS TO CLIMATE – GROWTH CHAMBERS, GREEHNOUSES, FIELD –

H. Krug | M. Fink

52. MEASUREMENT OF SHORT-TERM PLANT GROWTH

M. Fink | H. Krug

53. INFLUENCE OF THERMAL STORAGE EFFECTS OF THE SOIL ON GREENHOUSE HEAT CONSUMPTION

T. Hölscher

54. CONSIDERATION OF RISK IN PRODUCTION PLANNING

S. Ludwig

55. IMPLEMENTATION PROBLEMS OF COMPUTER-BASED PLANNING MODELS IN HORTICULTURAL FIRMS

S. Gollwitzer

56. EXPERT SYSTEM TECHNICS AS AN EXTENSION OF TRADITIONAL MODELLING

T. Schmidt-Paulsen

57. COUPLING EXPERT SYSTEMS AND MODELS FOR THE REAL-TIME CONTROL OF PLANT ENVIRONMENTS

P. Jones | B.L. Roy | J.W. Jones

58. EXPERT SYSTEM CUCUMBER

A. Göhler

59. COMPARISON OF POTPLANT NURSERY RESULTS

J. Benninga

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