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Péter Pepó

Bio: Péter Pepó is an academic researcher from University of Debrecen. The author has contributed to research in topics: Chernozem & Crop rotation. The author has an hindex of 10, co-authored 83 publications receiving 323 citations.


Papers
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Journal ArticleDOI
TL;DR: It is possible to reduce the unfavourable, negative agroecological, weather effects by using optimum nutrient supply, fertilization and appropriate variety-selection (Agoston-Pepo 2005), even in favourable, intensive agrotechnical circumstances.
Abstract: The key-elements of sustainable winter wheat production are variety selection and variety-specific fertilization. Our long-term experiments carried out on chernozem soil proved that the efficiency of fertilization was strongly modified by cropyear. In the cropyears characterized by good water-supply the yield-surpluses of fertilization varied between 3,6–4,3 t ha−1, in the average cropyears between 2,1–3,1 t ha−1 and in the drought cropyear was 0,9 t ha−1 in the mean of varieties. The tested wheat genotypes strongly differed in their natural nutrient utilization, fertilizer-responses, maximum yields and optimum NPK doses which means that it is very important to use variety-specific fertilization in sustainable wheat production.

37 citations

20 Dec 2013
TL;DR: In this paper, the 2010 and 2012 growing seasons for maize in terms of weather characteristics were tested in Croatia, Croatia, Serbia, Hungary and Bosnia and Herzegovina (B&H), where maize yields in 2012 were lower than in especially favorable 2010 by 53, 38, 38% and 40% respectively.
Abstract: Maize is the main field crop on arable land in Croatia, Serbia, Hungary and Bosnia and Herzegovina (B&H). In the period 2006-2010 total of 2 854506 ha (5-y mean) of arable lands in this area was covered by maize. Annual maize yield variations were from 3.6 to 7.5 t ha-1 (Hungary), from 3.2 to 5.9 t ha-1 (Serbia), from 4.9 to 8.0 t ha-1 (Croatia) and from 3.2 to 5.1 t ha-1 (B&H). The aim of this study was testing the 2010 and 2012 growing seasons for maize in terms of weather characteristics. Maize yields in 2012 (4.34 t ha-1 in Croatia, 3.98 t ha-1 in Hungary 2.78 t ha-1 in Serbia and 2.74 t ha-1 and in B&H were lower than in especially favorable 2010 by 53%, 38%, 38% and 40% respectively.

26 citations

Journal ArticleDOI
TL;DR: In this article, the effect of fertilization on wet gluten contents and farinograph values on chernozem soil under continental climatic conditions was investigated. And the correlation between fertilization and wet gluten content was medium.
Abstract: By using the baking quality parameters from a long-term experiment the effect of fertilization (N+PK) on wet gluten contents and farinograph values were determined on chernozem soil under continental climatic conditions. In the average of years and varieties fertilization highly increased the wet gluten content (in the control treatment 27,6 %, in the N 300/150 +PK fertilizer treatment 35,97 %). Fertilizer application also had favourable effects on farinograph values. These effects, however, were rather moderate (in the control treatment 56,2, in N 300/150 +PK fertilizer treatment 61,4).We could increase the stability of the quality by using of appropriate fertilizer doses. The correlation between fertilization and wet gluten content was medium (0.343 xx –0,694 xx ) and between fertilization and farinograph values was weak (0.030–0.419 xx ).

19 citations

Journal ArticleDOI
TL;DR: In this paper, the most important agrotechnical, biological (hybrid) and agroecological (crop year, soil) factors in maize production were evaluated on chernozem (Debrecen) and loamy (Hajduboszormeny) soils.
Abstract: Different long-term experiments were carried on chernozem (Debrecen) and loamy (Hajduboszormeny) soils. They included the most important agrotechnical, biological (hybrid) and agroecological (crop year, soil) factors in maize production. This paper evaluated the results of polyfactorial long-term experiments. For the maize the most favourable crop rotation was winter wheat (in a tri-culture) with an N 60–120, P2 O5 60–70, K2 O and 90–110 kg ha−1, and a density of 75–90,000 plants ha−1. The different input levels of maize crop management systems can modify an adaptive capacity to ecological conditions and the resilience of agro-ecosystems. The optimalization of agrotechnical elements reduces the harmful climatic effects. The yields of maize varied between 2–11 t ha−1 in extensive and 10–15 t ha−1 in intensive crop management systems, respectively.

16 citations

Journal ArticleDOI
TL;DR: In this article, the authors compared variations in winter wheat yields over years in four counties in Hungary and five in Croatia, with the emphasis on the impact of rainfall and mean air temperature regimes.
Abstract: Wheat is the second most important field crop on arable lands in Hungary and Croatia. Yield variations between years are high in both countries. In the short term these variations are mainly the result of the weather parameters specific to individual growing seasons. The aim of this study was to compare variations in winter wheat yields over years in four counties in Hungary and five in Croatia, with the emphasis on the impact of rainfall and mean air temperature regimes. The results showed that rainfall in spring was most decisive for winter wheat yields. The highest winter wheat yields were obtained when the rainfall in the winter half-year ranged from 230–260 mm and the spring rainfall from 180–230 mm. The precipitation in the growing season is much higher in eastern Croatia than in eastern Hungary, so water shortage is a more pronounced environmental problem for wheat in Hungary. This is probably why wheat yields were lower in eastern Hungary than in eastern Croatia in the period tested. Pearson corre...

15 citations


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TL;DR: In this article, the nitrogen content and relation between nitrogen and chlorophyll content at some wheat cultivars were carried out at the outset of the flowering phase at the same time.
Abstract: Physiological investigations of nitrogen content and relation between nitrogen and chlorophyll content at some wheat cultivars were carried out at the outset of the flowering phase. Dependence of nitrogen content from mineral elements in the soil was established at the same time. Investigations were guided on unfertilized soil and four fertilization variants (N, NPK, NP and NK). The results indicated that nitrogen content influenced from presence and ratio mineral elements in the soil. The most favorable variant of fertilization was NPK and the most unfavorable - unfertilized soil. According to cultivars, KG 100 had the highest nitrogen content and Matica the lowest. Nitrogen content was close link with chlorophyll content. Correlation does not exist only at triticale cultivar Knjaz.

73 citations

Journal ArticleDOI
TL;DR: In this article, eight different soil tillage systems (TS) for winter wheat after soybean crop production were compared at the chernozem soil type in Croatian Baranya region in a 4-year period (2001/2002, 2002/2003, 2003/2004, 2004/2005).
Abstract: Eight different soil tillage systems (TS) for winter wheat after soybean crop production were compared at the chernozem soil type in Croatian Baranya region in a 4-year period (2001/2002, 2002/2003, 2003/2004, 2004/2005). Tillage systems were: CT) conventional tillage, based on autumn mouldboard ploughing ; DH) autumn disc harrowing ; CH) autumn disc harrowing + chiselling ; NT) No-tillage ; CSDW) DH for winter wheat, alternated with CT for previous crop soybean ; CWDS) CT for wheat, DH for soybean ; CsNw) NT for wheat, CT for soybean ; and CwNs) CT for wheat, NT for soybean. The dry conditions experienced in 2002/2003 decreased at half winter wheat grain yield at treatments NT and CwNs. The most stable grain yields were obtained by CT, CH, and CSDW in the third of 4 experimental years. CsNw, DH and CWDS did not result in signicant crop yield reduction when compared to CT. ere was no striking regularity regarding applied TS at the grain yield components. The strongest effects on yield and yield components for winter wheat were due to the climate conditions. TS had a significant effect on the grain yield and crop population in the earing stage in all 4 experimental years. The biggest difference in stem height was determined between CWDS and CsNw. Mass of plant, number of grains per spike, and hectolitre mass were greater under CT than under other TS. Coefficient of tillering and mass of 1000 grains had approximate values for all applied TS. In conclusion, CH, CSDW, and CsNw produced similar or slightly better quality properties than CT and these systems could be presented as an even-handed replacement for soil tillage.

47 citations

Journal ArticleDOI
TL;DR: It is possible to reduce the unfavourable, negative agroecological, weather effects by using optimum nutrient supply, fertilization and appropriate variety-selection (Agoston-Pepo 2005), even in favourable, intensive agrotechnical circumstances.
Abstract: The key-elements of sustainable winter wheat production are variety selection and variety-specific fertilization. Our long-term experiments carried out on chernozem soil proved that the efficiency of fertilization was strongly modified by cropyear. In the cropyears characterized by good water-supply the yield-surpluses of fertilization varied between 3,6–4,3 t ha−1, in the average cropyears between 2,1–3,1 t ha−1 and in the drought cropyear was 0,9 t ha−1 in the mean of varieties. The tested wheat genotypes strongly differed in their natural nutrient utilization, fertilizer-responses, maximum yields and optimum NPK doses which means that it is very important to use variety-specific fertilization in sustainable wheat production.

37 citations

Journal ArticleDOI
TL;DR: Cultivar Perla had the highest value of sedimentation and wet gluten content and this cultivar the best reacted to increasing N levels and the highest increasing of both traits established in N 3 variant when applied 120 kg ha −1 of nitrogen.
Abstract: A field experiment was conducted to investigate the effect of nitrogen fertilizer applications on some quality components of wheat. For winter wheat genotypes (Ana Morava, Vizija, L-3027 and Perla) were grown at Small Grains Research Centre Kragujevac in three years (2005–2007) at three levels of nitrogen fertilization (N 1 = 60 kg N ha −1 , N 2 = 90 kg N ha −1 and N 3 = 120 kg N ha −1 ). Zeleny sedimentation value and wet gluten content in divergent wheat genotypes were analyzed in depending on the nitrogen nutrition and years. Nitrogen fertilization significantly increased sedimentation value and wet gluten content. The highest increasing of both traits established in N 3 variant when applied 120 kg ha −1 of nitrogen. Genotypes reacted differently to N level increasing. Cultivar Perla had the highest value of sedimentation and wet gluten content and this cultivar the best reacted to increasing N levels. Statistically significant differences for sedimentation value and wet gluten content were found among...

31 citations

Journal ArticleDOI
TL;DR: The impact of genotype and environment on agronomic and quality traits of wheat determined through multi-ocation trials have been used to provide information necessary for the validation and enhancement of wheat breeding efforts and production improvement.
Abstract: The impact of genotype and environment on agronomic and quality traits of wheatdetermined through multi-Iocation trials have been used to provide information necessaryfor the validation and enhancement of wheat breeding efforts and productionimprovement. Field trials that are managed folIowing local practices in accordance withthose in the surrounding wheat growing areas may be used as predictors for successfulcultivar usage (Drezner

30 citations