Šumarski list, Vol. 135 No. 13, 2011.
Izvorni znanstveni članak
Influence of Various Container Types and Slow-release Fertilizer Doses on Growth and Physiological Parameters of Black Pine (Pinus nigra Arn.) Seedlings
Ivan Seletković
orcid.org/0000-0002-5773-6858
; Hrvatski šumarski institut Jastrebarsko
Nenad Potočić
; Hrvatski šumarski institut Jastrebarsko
Vlado Topić
; Institut za jadranske kulture i melioraciju krša Split
Lukrecija Butorac
; Institut za jadranske kulture i melioraciju krša Split
Goran Jelić
; Institut za jadranske kulture i melioraciju krša Split
Anamarija Jazbec
; Šumarski fakultet Sveučilišta u Zagrebu
Sažetak
Although growing of conifer seedlings in containers is nothing new, our knowledge is deficient when it comes to various combinations of substrates, container types and different fertilizers and fertilizer doses, especially with tree species aimed at planting in the coastal zone of Croatia.
This paper presents the results of the experiment testing the influence of various types of containers and doses of slow-release fertilizer (Osmocote Exact Standard 5–6 M) on the growth and physiological parameters of Black pine (Pinus nigraArn.) seedlings.
The trial was set up in the nursery Omiš, Hrvatske šume d.o.o. Zagreb, as a randomized block in four repetitions. Treatments were different container types (HIKO V–150, HIKO V–265, QPD 12T/18) and fertilizer doses (2,4 or 6 g/l of substrate). Concentrations of nitrogen, phosphorous, potassium, calcium, magnesium were determined in the needles of seedlings. Seedling heights and root collar diameters were measured at the end of the first vegetation season, and root traits were analysed with software package WinRhizo.
Fertilization with Osmocote Exact had an influence on concentrations of mineral nutrients in black pine needles. The most marked positive influence of fertilization can be seen in nitrogen concentrations in needles (Fig. 1). With phosphorous the concrentrations were rising with dose especially in HIKO V–150 containers (Fig. 2). Fertilization had a negative influence on calcium concentrations, but the deficiency of calcium was not established, regardless of applied fertilizer dose (Fig. 4).
Both dose and container type influenced significantly the development of height and root collar diameter of seedlings (Table 3, Figs. 6 and 7). Maximum height and root collar diameter of seedlings were recorded in HIKO V–265 containers at the highest fertilizer dose. With HIKO V–150 containers the highest dose will favor height growth at the expense of root collar diameter. The type of container was decisive for the development of roots. Fertilizer dose had a significant influence on lenght and volume of roots, but not on the number of fine roots or number of root tips. The influence of fertilizer on fine root development is most pronounced with HIKO V–150 containers, where seedlings fertilized with the largest dose developed the highest number of active roots in comparison with other container types.
Ključne riječi
black pine (Pinus nigraArn.); containers; Osmocote Exact Standard 5–6M; seedling height; root collar diameter; nutritional status; WinRhizo
Hrčak ID:
72317
URI
Datum izdavanja:
14.10.2011.
Posjeta: 2.107 *