DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 4-6/1975 str. 45 <-- 45 --> PDF |
LITERATURA 1. Allen, R. M. (1953): Release and fertilization stimulate long feaf pine cone crop, Journal of Forestry, 51. — 2. Baule , H., F r i c k e r, C. (1967): Die Düngung von Waldbäumen, München. — 3. Detwiler , S. B. (1943): Bessere Eicheln von stark gedüngten Eichen, Journal of Forestry, 41. — 4. Gu in au de au, J., Jlly, G., Mauge , J. P., Dumas , F. (1963): Essai de fertilisation minerale sur pin maritime ä Mimizan (Landes), Annales de 1´ Ecole Nationale des Eeaux et Forets XX, 1. — 5. H ausser , K. (1960): Düngungsversuche zu Kie ern mit unerwarteten Auswirkungen, AFZ 15, 34. — 6. Ho ekstra, P. E., M e r g e n, F. (1967): Experimental inducation of female flowers on young Slash pine, Journal of Forestry, 55, 11. — 7. Huchle r (1958): Stichstoff — Düngungsversuche in Tannen — Althölzern, Der Forst — und Holzwirt, 13, 16. — 8. J ü 11 ne r, O. (1959): Die Wirkung einer Kalkung silikarmer rohhmumusbedeckter, diluvialer Sande, Der Forstund Holzwirt, 14, 18. — 9. Kleinschmit , R. (1958): Stickstoffdüngungsversuch in einer Sammenplantage, Der Forst und Holzwirt, 13, 16. — 10. Klepac , D. (1963): Rast i prirast šumskih vrsta drveća i sastojina, Zagreb. — 11. Komle nović , N. (1965): Koncentracija hraniva u iglicama američkog borovca kao indikator fertilizacije, Zagreb (Magistarski rad). — 12. K o m 1 e n o v i ć, N. (1973): Koncentracija hraniva u iglicama kao indikator stanja ishrane kultura obične smreke (Picea abies, Karst.), Zagreb (Doktorska disertacija). — 13. Me r gen, F., Viogt , G. K. (1960): Effects of fertilizer application on two generations of slash pine, Proc. Soil Sci. Soc. America., 24. — 14. Regent , B. (1972): Šumsko sjemenarstvo, Poslovno udruženje šumsko privrednih organizacija Zagreb. — 15. Sa r- v a s, R. (1962): Untersuchungen über Blüte und Samenerzeugung bei der Kiefer, Comm. Inst. For Fenniae 4, Helsinki. — 16. Steinbrenner , E. C, Duffield, J. W., Campbell , R. K. (1960): Increased cone production of young douglas — fir following nitrogen and phosphorus fertilization, Journal of Forestry, Vol. 58. No. 2. — 17. Stephenson , G. K. (1960): Blühstimulierung bei der Strobe. Proceedings of the 8 th Northeastern Forest Tree Improvement Conference, held at New Haven. — 18. Stie r (1958): Die Förderung der Buchennaturverjüngung durch NH — Begasung, Der Forst- und Holzwirt 13, 16. — 19. Uremović , K. (1971): O kvadratnom vodonosnom kompleksu u području Varaždina, Geološki vjesnik, 24, Zagreb. — 20. Vidaković , M. (1960): Sjemenske plantaže šumskog drveća, Jug. savetodavni centar za poljoprivredu i šumarstvo, Beograd. — 21. Wehrmann , J. (1961): Die Auswirkung der Trockenheit von 1959 auf die Nährelementversorgung bayerischer Kiefernbestände, FwCbl 80. — 22. W e n g e r, K. F. (1953): The effect of fertilization and injury on the cone and seed production of loblolly pine seed trees, Journal of Forestry, 51. — 23. Zobel, B. Roberds, J. (1970): Diferential genetic response to fertilizers within tree species. Society of American Foresters, Michigan. Summary Investigations of the effect of mineral fertilizers on the seed yield of Eastern White Pine in the Zelendvor culture In a 15-year-old culture of Eastern White Pine was laid out a fertilizer experiment, in which during a 3-year interval (1967—1969) there were studied the effects of nitrogen and phosphorus fertilizers on the seed yield, height and diameter growth and the nutritional condition. The doses applied amounted to 40 g N in the form of calcium ammonium nitrate and 40 g P-2O5 per tree in the form of superphosphate. Except for the controls the fertilizers were applied separately and in combination. Fertilization was carried out in the month of April, 1967, and it was repeated in the same period in 1969. Whereas on this realtively fertile soil the fertilization did not act upon the height and diameter increaments of Eastern White Pine, the increase of the seed yield on some variants, were fertilizers were applied, amounted to over 80% |