Az olajlen (Linum usitatissimum L.) mutrágyázása csernozjom talajon

Translated title of the contribution: Mineral fertilisation of oil flax (Linum usitatissimum L.) on chernozem soil

I. Kádár, László Radics, Dánielné Lukács

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effects of various N, P and K supply levels and their combinations on the growth, weed infestation, flowering and yield of oil flax (variety Szegedi-43) and on the air-dry matter accumulation in the organs were examined in the 14th year of a long-term mineral fertilisation experiment setup on calcareous loamy chernozem soil. The soil of the growing site contained around 3% humus, 5% CaCO3 and 20% clay in the ploughed layer. The soil was moderately well supplied with K, Mg, Mn and Cu, but poorly supplied with P and Zn. The experiment involved 4N × 4P × 4K = 64 treatments in 2 replications, giving a total of 128 plots. The main results and conclusions were as follows: 1. Oil flax does not require a great deal of fertiliser. On the experimental soil, which was moderately supplied with K and poorly with P, no significant yield surpluses were obtained by applying P or K. The optimum rate of N fertiliser proved to be 100 kg · ha-1 · year-1. Pronounced yield depression was observed above ammonium lactate (AL)-solublc P2O5 supply levels of 140-150 mg/kg and above N fertiliser rates of 100 kg 7middot; ha-1 · year-1. 2. Excessive NP supplies led to a 30-50% reduction in stand height, while flowering was delayed by around 2 weeks and the flowering period became protracted. The oil flax cover dropped from 81 to 36%, while the weed cover rose from 8 to 23% and the number of weed species from 8 to 11. The air-dry shoot mass declined from 2.2 to 0.7 t/ha on 10 June and from 4.1 to 1.6 t/ha on 29 June. The air-dry matter content in the shoots was 8% lower than in the control at both dates. The seed, capsule, stem and root yields at harvest declined by a third on average on soil over-supplied with NP. 3. By contrast with data in the literature, oil flax did not prove to be P-demanding. The negative effects of N over-fertilisation could not be moderated by an increase in the P rate. In fact, the joint application of excessive rates of N and P may have catastrophic consequences, leading to the loss of 1/3 of the yield and reducing the oil content by 2-3%. On the control soil, which had not been fertilised for 14 years, the oil yield was 552 kg/ha, increasing to 750 kg/ha with an annual N rate of 100 kg/ha and AL-P2O5 supplies of 140 mg/kg, but decreasing to 452 kg/ha in the case of NP over-fertilisation. 4. On calcareous soils of this type, the Hungarian extension service considers an AL-P2O5 supply level of 160-230 mg/kg to be "moderate" and recommends applying P fertiliser to oil flax. The K fertiliser recommendation is similar. The present data cast doubt on these recommendations. It should be emphasised that oil flax is sensitive to over-fertilisation. 5. The quantities of nutrients incorporated into the maximum yield of 2 t/ha seed + 2 t/ha stem + 1 t/ha capsules at harvest amounted to 107 kg N, 44 kg K (53 kg K2O), 27 kg P (62 kg P2O 5), 31 kg Ca, 9 kg Mg, 2 kg Na, 900 kg Fe, 264 g Mn, 79 g Zn and 16 g Cu.

Original languageHungarian
Pages (from-to)423-436
Number of pages14
JournalNovenytermeles
Volume52
Issue number3-4
Publication statusPublished - Jun 2003

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Linum usitatissimum
flax
minerals
ammonium lactate
oils
soil
weeds
fertilizers
calcareous soils
flowering
air
nitrogen fertilizers
stems
shoots
fertilizer rates
loam soils
seeds
surpluses
dry matter content
humus

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Az olajlen (Linum usitatissimum L.) mutrágyázása csernozjom talajon. / Kádár, I.; Radics, László; Lukács, Dánielné.

In: Novenytermeles, Vol. 52, No. 3-4, 06.2003, p. 423-436.

Research output: Contribution to journalArticle

Kádár, I, Radics, L & Lukács, D 2003, 'Az olajlen (Linum usitatissimum L.) mutrágyázása csernozjom talajon', Novenytermeles, vol. 52, no. 3-4, pp. 423-436.
Kádár, I. ; Radics, László ; Lukács, Dánielné. / Az olajlen (Linum usitatissimum L.) mutrágyázása csernozjom talajon. In: Novenytermeles. 2003 ; Vol. 52, No. 3-4. pp. 423-436.
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N2 - The effects of various N, P and K supply levels and their combinations on the growth, weed infestation, flowering and yield of oil flax (variety Szegedi-43) and on the air-dry matter accumulation in the organs were examined in the 14th year of a long-term mineral fertilisation experiment setup on calcareous loamy chernozem soil. The soil of the growing site contained around 3% humus, 5% CaCO3 and 20% clay in the ploughed layer. The soil was moderately well supplied with K, Mg, Mn and Cu, but poorly supplied with P and Zn. The experiment involved 4N × 4P × 4K = 64 treatments in 2 replications, giving a total of 128 plots. The main results and conclusions were as follows: 1. Oil flax does not require a great deal of fertiliser. On the experimental soil, which was moderately supplied with K and poorly with P, no significant yield surpluses were obtained by applying P or K. The optimum rate of N fertiliser proved to be 100 kg · ha-1 · year-1. Pronounced yield depression was observed above ammonium lactate (AL)-solublc P2O5 supply levels of 140-150 mg/kg and above N fertiliser rates of 100 kg 7middot; ha-1 · year-1. 2. Excessive NP supplies led to a 30-50% reduction in stand height, while flowering was delayed by around 2 weeks and the flowering period became protracted. The oil flax cover dropped from 81 to 36%, while the weed cover rose from 8 to 23% and the number of weed species from 8 to 11. The air-dry shoot mass declined from 2.2 to 0.7 t/ha on 10 June and from 4.1 to 1.6 t/ha on 29 June. The air-dry matter content in the shoots was 8% lower than in the control at both dates. The seed, capsule, stem and root yields at harvest declined by a third on average on soil over-supplied with NP. 3. By contrast with data in the literature, oil flax did not prove to be P-demanding. The negative effects of N over-fertilisation could not be moderated by an increase in the P rate. In fact, the joint application of excessive rates of N and P may have catastrophic consequences, leading to the loss of 1/3 of the yield and reducing the oil content by 2-3%. On the control soil, which had not been fertilised for 14 years, the oil yield was 552 kg/ha, increasing to 750 kg/ha with an annual N rate of 100 kg/ha and AL-P2O5 supplies of 140 mg/kg, but decreasing to 452 kg/ha in the case of NP over-fertilisation. 4. On calcareous soils of this type, the Hungarian extension service considers an AL-P2O5 supply level of 160-230 mg/kg to be "moderate" and recommends applying P fertiliser to oil flax. The K fertiliser recommendation is similar. The present data cast doubt on these recommendations. It should be emphasised that oil flax is sensitive to over-fertilisation. 5. The quantities of nutrients incorporated into the maximum yield of 2 t/ha seed + 2 t/ha stem + 1 t/ha capsules at harvest amounted to 107 kg N, 44 kg K (53 kg K2O), 27 kg P (62 kg P2O 5), 31 kg Ca, 9 kg Mg, 2 kg Na, 900 kg Fe, 264 g Mn, 79 g Zn and 16 g Cu.

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KW - Fertilisation

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KW - Quality

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