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Until the 1950s plant nutrition consisted of the application of farmyard manure as part of the within-farm nutritive cycle. As production intensified, artificial fertilizers quickly gained a dominant role. The appearance of environmental damage and the rise in production costs raised the question of the wider application of organic manures. To face this challenge a series of experiments was performed, to examine the possibility of reusing sewage sludge and slaughterhouse waste compost, taking into account the costs and environmental regulations. At the premises of Beta-Research Ltd. in Sopronhorpács a 2-year plot experiment with 2 factors and 4 repetitions in randomly arranged blocks was carried out in 2000 and 2001. The experimental plant was sugar beet (Beta vulgaris L. var. saccharifera Alef.) in the first year and spring barley (Hordeum vulgare L.) in the second year. The aim of the experiment was to examine the effect of sewage sludge and slaughterhouse waste compost on plant growth and internal parameters and to determine the optimal and unfavourable rates of these manures from the agricultural point of view. Evaluating the data it was found that the treatments caused statistically significant (LSD5%) differences in yield, sugar content, retrievable sugar content, sugar yield, a-amino-nitrogen and potassium content and recoverability quotient compared to the control. An analysis of the experimental results demonstrated that 25-50 t/ha sewage sludge application could be recommended under the given field conditions, while compost could be applied at a rate of 150-200 t/ha without any danger of damaging the plants. Several further factors, such as soil, human and animal hygiene and plant nutrition, must also be considered if safe application is to be achieved in the long term.

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szuperfoszfát hatásának vizsgálata V. A talajtulajdonságok és a foszfortrágyák hatása a tavaszi árpa (Hordeum vulgare) Cd-, Cr-, Co-, Ni-, Sr-, Mn-, Al-és Mo koncentrációjára tenyészedény-kísérletben. Agrokémia és Talajtan 54.1–2: 105–120 pp

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capacity of barley ( Hordeum vulgare L.) under changing temperature and light conditions in a gradient growth chamber. Acta Agronomica Hungarica, 53 (4) , pp. 371–376. Kovács G

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a foszfortrágyák hatása tavaszi árpa (Hordeum vulgare) Cd-, Cr-, Co-, Ni-, Sr-, Mn-, Al-és Mo-koncentrációjára tenyészedény-kísérletben, Agrokémia és Talajtan, Vol. 54, N o s 1–2, 105–120 pp. Csathó Péter

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Cereal Research Communications
Authors: L. Gomez-Pando, J. Jimenez-Davalos, A. Eguiluz-De La Barra, E. Aguilar-Castellanos, J. Falconí-Palomino, M. Ibañez-Tremolada, M. Aspiolea, and J. Lorenzo

IPGRI, 1994. Descriptors for barley ( Hordeum vulgare L.). International Plant Genetic Resources Institute, Rome, pp. 1–46. Descriptors for barley (Hordeum vulgare L

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barley ( Hordeum vulgare L.). Sex. Plant Reprod. 13 :95–104. Clément C. Plastid differentiation during androgenesis in albino and non-albino producing cultivars of barley (Hordeum

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Blumeria graminis in barley genotypes ( Hordeum vulgare L.) under field and controlled conditions . J. Plant Biol. Res. 2 , 107 – 112 . Arabi , M. I. E. , Al-Safadi , B. , Jawhar , M. and Mir-Ali , N. ( 2005 ): Enhancement of embryogenesis

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. 2012 . Malting revisited: Germination of barley ( Hordeum vulgare L.) is inhibited by both oxygen deficiency and high carbon dioxide concentrations . Food chem. 132 ( 1 ): 476 – 481

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(Hordeum vulgare) Cd-, Cr-, Co-, Ni-, Sr-, Mn-, Al-és Mo-koncentrációjára tenyészedénykísérletben, Agrokémia és Talajtan, Vol. 54, Nos 1–2, 105–120 pp. László C. P. é. R. Az algériai

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árpa ( Hordeum vulgare L.) műtrágyázása vályog csernozjom talajon . Növénytermelés . 49 : 661 – 675 . 9 Kádár I. : 2000b . Az őszi árpa ( Hordeum vulgare L

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