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Berzsenyi, Z. (1996): A N-műtrágyázás hatásának vizsgálata a kukorica ( Zea mays L.) növekedésére Hunt-Parsons modellel. [Studies on the effect of N fertilisation on maize ( Zea mays L.) growth using the

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. (Protein accumulation in wheat as an effect of N-fertilisation and during grain development and ripening.) PhD Thesis, Keszthely. Berecz, K., Debreczeni, K., Présing, M. 1997: Incorporation of 15 N-labelled fertilizer

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termésstabilitására 1991 és 2000 között. (Effect of sowing time and N fertilisation on the yield and yield stability of maize (Zea mays L.) hybrids between 1991-2000.) Növénytermelés , 50 , 309-331. A vetésidő és a N-műtrágyázás hatása a

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Berzsenyi, Z. (2009): Studies on the effect of N fertilisation on the growth of maize ( Zea mays L.) hybrids I. Dynamics of dry matter accumulation in whole plants and plant organs. Acta Agron. Hung

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Berzsenyi, Z., Lap, D. Q. (2005): Responses of maize ( Zea mays L.) hybrids to sowing date, N fertiliser and plant density in different years. Acta Agron. Hung. , 53 , 119

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109 114 Berzsenyi, Z. (1996): A N-műtrágyázás hatásának vizsgálata a kukorica (Zea mays L.) növekedésére Hunt-Parsons modellel. (Studies on the effect of N fertilisation on

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., Richner, W., Streit, B., Frossard, E., Liedgens, M. (2008): Growth, yield and yield components of winter wheat and the effects of tillage intensity, preceding crops and N fertilisation. Eur. J. Agron , 28 , 405

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Berzsenyi, Z., Dang, Q. L., Micskei, G., Takács, N. (2006): Effect of sowing date and N fertilisation on grain yield and photosynthetic rates in maize ( Zea mays L.). Cereal Res. Commun. , 34 , 409

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large-pot model experiments were conducted with maize under greenhouse conditions with the aim of studying the effect of different N fertiliser forms, water supplies and crop residues on the nitrogenous gas production in the rooting zone. Nitrogen fertiliser was applied in the form of KNO3 or NH4Cl. The experiment was done at two soil moisture levels, with or without the incorporation of maize crop residues into the soil, and with or without test plants. Gas traps were placed in the pots at a soil depth of 20 cm. During the growing season, the trapped soil air was analysed for NOx, N2O and N2. Practically the same N amounts evolved in the soil air with both chemical forms of N fertiliser at both soil moisture levels. expressed as a percentage of fertiliser N, the total amount of gaseous N evolved averaged 12.8% and 12.9% in the planted, and 23.8% and 24.3% in the unplanted pots with KNO3 and NH4Cl fertiliser, respectively. Higher soil moisture and the incorporation of crop residues resulted in higher NOx-N and N2O-N ratios within the total gaseous N evolved in the rooting zone.

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. Results of the Hungarian plant nutrient survey 1987 Horváth, J. (1993): Results of N fertilization based on soil and plant

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