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1.

001-es BibID:BIBFORM068915
Első szerző:Czellér Krisztina (geográfus)
Cím:Elaboration of the methodology of dew measurement by means of weighing lysimeters / Krisztina Czellér, Lúcia Sinka, Géza Tuba, József Zsembeli
Dátum:2017
Megjegyzések:Records of the frequency of occurrence of or the total amounts of dew are scarce. The lack of such records can undoubtedly be attributed to the difficulty of making quantitative measurements of dew. Within some limitations large precision weighing lysimeters can be suitable for the accurate determination of dew amounts. The lysimeter data completed with meteorological data provide the possibility to identify such periods with positive water balance when no rainfall occurred hence dew formation is probable. Nevertheless some "data noises" (oscillations) are characteristic to weighing lysimeter data gained with a high frequency for a longer period. These oscillations can be easily mixed up with the weight increase due to dew formation, therefore filtering or smoothing functions must be used to separate them. Our research aimed to elaborate a method that is suitable to separate true dewfall periods from oscillations and to quantify the amount of dew occurred on the surface of 2 weighing lysimeters of Karcag Research Institute of RISF UD for a longer period. The method we applied for filtering was the application of weight data measured with 1 hour frequency instead of 10 minutes frequency. The investigation period lasted from 1/4/2015 to 30/9/2016. Two high precision weighing lysimeters were involved, one with bare soil surface and one with grass cover. 43.11 and 49.35 mm dew was calculated for the grass covered and the bare surface lysimeters for the total 18-month-long investigation period with the application of our method.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
dew
data filtering
weighing lysimeter
Megjelenés:Columella 4 : 1 (2017), p. 187-192. -
További szerzők:Sinka Lúcia (1993-) (környezetgazdálkodási agrármérnök) Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Zsembeli József (1967-) (agrármérnök)
Pályázati támogatás:Osztrák-Magyar Akció Alapítvány: project nr. 92öu2
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2.

001-es BibID:BIBFORM058806
Első szerző:Czimbalmos Ágnes (okl. agrármérnök)
Cím:Effects of fertilization on some quantitative and qualitative characteristics of winter wheat in Great Cumania / Ágnes Czimbalmos, János Jóvér, József Zsembeli
Dátum:2014
ISSN:2064-7816 2064-9479
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban
winter wheat
fertilization
yield
Megjelenés:Columella. - 1 : 1 (2014), p. 17-21. -
További szerzők:Jóvér János (1988-) (környezetgazdálkodási agrármérnök) Zsembeli József (1967-) (agrármérnök)
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3.

001-es BibID:BIBFORM106329
Első szerző:Gebreyesus, Mehari
Cím:Assessment of measured and estimated meteorological data in terms of sorghum production on the example of Hamelmalo, Eritrea / Mehari Gebreyesus, Györgyi Kovács, Géza Tuba, Arzu Rivera-Garcia, József Zsembeli
Dátum:2022
Megjegyzések:Eritrea is exposed to climate variability and extreme events like drought and precipitation variability. Hamelmalo, a sub region in Eritrea, suffers from all the problems brought by climate change, especially because local people mainly depend on rainfed agriculture. I it is difficult to conduct climate related research activities for the region due to the shortage of meteorological data. However, in 2015, a new, complete meteorological station was established providing the chance of the first observations for practical and scientific purposes. The main objective of this study was to evaluate some climatic parameters from crop productional point of view by comparing the observed values with ones calculated by the Local Climate Estimator (LCE) model. Chi-square test was used to statistically analyse the differences. Based on the results, all the studied climatic parameters, except for precipitation, were almost on a par, which means there were no statistically significant differences between the observed and the estimated values. It can be concluded that the most variable climatic parameter in Hamelmalo is precipitation and this also affects the climatic water balance hence the need for irrigation if higher yields are wanted to be achieved. Sufficient water is vital in the mid-season and the late developmental stage of sorghum. Therefore, sowing time is advised to be adjusted to early July to ensure the maximum vegetative growth and seed setting period to be reached at the end of August in order to take the advantage of the positive climatic water balance of these two months.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
climate change
meteorological data
sorghum production
Eritrea
Megjelenés:Columella. - 9 : 1 (2022), p. 17-30. -
További szerzők:Kovács Györgyi (1980-) (környezetgazdálkodási agrármérnök) Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Rivera Garcia Arzu (1989-) Zsembeli József (1967-) (agrármérnök)
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4.

001-es BibID:BIBFORM106439
Első szerző:Rivera Garcia Arzu
Cím:Correlation of secondary salinization and soil conditioning in vegetable production under irrigation with saline water / Arzu Rivera-Garcia, Géza Tuba, Györgyi Kovács, Lúcia Sinka, József Zsembeli
Dátum:2022
ISSN:2064-7816 2064-9479
Megjegyzések:Secondary salinization is a main problem around the world due to climate change and intrusion of salts in the soil by improper irrigation. Our aim was to study the soil salinization process by simulating vegetable production under irrigation with saline water (total soluble salt content 700 mg L??1). We tested 6 different technologies of soil conditioner application and 3 vegetable crops with different sensitivity to salinity in a small plot experiment set up on a meadow chernozem soil. During the irrigation season in 2020, we regularly measured the electric conductivity (ECa) and the soil moisture content (v/v%) in the topsoil (0.1 m) and analysed these parameters with Pearson's bivariate correlation (PCC) method. As our hypothesis, we expected that there is correlation among ECa, soil moisture content, soil conditioning, and providing the possibility to quantify the secondary salinization process.We found that all the 4 biosynthetic soil conditioners technologies minimized the harmful effect of saline irrigation. In the case of the not salt tolerant (NT) peas, the PCC correlation was higher to compost application and control expressing more intense salinization. NT beans showed a weaker correlation with lower PCCs, which must be due to its higher root activity leading to intensive leaching resulting in a lower degree of salinization. In the case of chilli with low salt tolerance (LT), micro dosing of soil conditioners was not effective in mitigating the harmful effect of secondary salinization, only full doses decreased the PCC. The salt tolerance of the investigated vegetable crops was also manifested in the yields. We found that PCC is a suitable statistical method to understand and quantify the process of secondary salinization.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
electric conductivity
soil moisture content
soil conditioners
salt tolerance
secondary salinization
Megjelenés:Columella. - 9 : 22 (2022), p. 35-46. -
További szerzők:Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Kovács Györgyi (1980-) (környezetgazdálkodási agrármérnök) Sinka Lúcia (1993-) (környezetgazdálkodási agrármérnök) Zsembeli József (1967-) (agrármérnök)
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5.

001-es BibID:BIBFORM068913
Első szerző:Zsembeli József (agrármérnök)
Cím:Complex effect of secondary salinization and composting on soil respiration / József Zsembeli, Yuriko Mori, Géza Tuba, Krisztina Czellér, Györgyi Kovács
Dátum:2017
Megjegyzések:Salt-affection has been and still is a critical issue facing croplands in a large portion of the GreatHungarian Plain. Compost is known to have a positive effect on salt-affected soil, but little is known about thecorrelation between soil organic matter and bacterial activity. Microbial biomass and activity is found to berelative to levels of soil organic matter (SOM). Bacterial activity is affected by both salts and organic matter, andthis research aims to determine the breakpoint and relationship between those two parameters. A pot experimentwith 27 pots was set in Karcag Research Institute of RISF UD where soil respiration was measured undercontrolled conditions over a 16-week-long period. During the initial phase of the experiment, compost wasadded to non-salt-affected soil in differing doses (0, 25, 50 t/ha), and each sample was irrigated with a solutionof different salt concentrations (0, 600, 1800 mg/l) with three test replications. At the tenth week, the compostwas added to each at second time. At the thirteenth week, soil conditioner, rich in N, S and Ca, was addedequally to each soil sample. Following the experimental phase, nutrients and bacterial colony measurements wereconducted. During the phase of the experiment with compost application alone, the results demonstrated thatsalt concentration of irrigation water and compost ratio had negligible influence on soil respiration. However,following the addition of soil conditioner, a dramatic increase in respiration was recorded with initial spike ofchemical reaction and second spike with biological reaction. Nutrient components were highly affected by saltand SOM, therefore, soil microbial activity fluctuates with variable reasons including combination of nutrientsunder salt stress environment.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban
CO2 emission
composting
soil organic matter
secondary salinization
Megjelenés:Columella 4 : 1 (2017), p. 193-198. -
További szerzők:Mori Yuriko Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Czellér Krisztina (1985-) (geográfus) Kovács Györgyi (1980-) (környezetgazdálkodási agrármérnök)
Pályázati támogatás:TéT_12_SK-1-2013-0006
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TéT_12_SK-1-2013-0006
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