NxP and NxK interactions on grass yield and mineral element composition

Péter Ragályi, I. Kádár

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The effect of different N, P and K supply levels (low, satisfactory, high, extreme high) and their combinations were examined in the 31 st year of a long-term fertilization experiment on the development, yield and mineral element content of a 4 years old established all-grass sward in 2004, with seed mixture of eight grass species. The trial was established on a calcareous chernozem soil. The soil of the growing site contained around 3% humus, 3-5% CaCO 3, 20-22% clay in the ploughed layer and was originally moderately well supplied with available K, Mg, Mn, Cu and poorly supplied with P and Zn. The NxP fertilization rose 3-fold the hay yield. The "moderate" supply levels (135 mg kg -1 AL-K 2O and 153 mg kg -1 AL-P 2O 5) basically satisfied the P and K demands of grass. Without a satisfactory P supply the efficiency of N fertilization was much lower and vice versa. As a function of rising NxP supply levels, the Mo content of hay in the 1 st cut dropped from 1.0 to 0.3 mg kg -1, while in the 2 nd cut hay from 4.5 to 0.4 mg kg -1. The Na content of the primary hay increased one order of magnitude with the increasing N-supply, while the K-fertilization reduced it to its 20%. The NxK interactions had negative effect on Na, Ca, Mg and B uptake.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalCereal Research Communications
Volume36
Issue numberSUPPL. 5
DOIs
Publication statusPublished - 2008

Fingerprint

Poaceae
Fertilization
Minerals
Ephrin-A5
hay
minerals
grasses
Soil
seed mixtures
calcareous soils
Seeds
sward
humus
Rosa
clay
soil

Keywords

  • Element composition
  • Fertilization
  • Grass
  • Interaction
  • Yield

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Physiology

Cite this

NxP and NxK interactions on grass yield and mineral element composition. / Ragályi, Péter; Kádár, I.

In: Cereal Research Communications, Vol. 36, No. SUPPL. 5, 2008, p. 79-82.

Research output: Contribution to journalArticle

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