scholarly journals effect of agrotechnological factors and the cropping season on sweetcorn (Zea Mays L. convar. saccharata Koern.) production in a humid year

2010 ◽  
pp. 146-151
Author(s):  
Ádám Lente
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
The Other ◽  
Density Level ◽  
Chernozem Soil ◽  
Sowing Time ◽  
Cropping Season ◽  
Crop Density ◽  
Set Up ◽  
The University

We have examined the effect of three agrotechnological factors (sowing time, fertilization, crop density) and four genotypes on the yieldof sweetcorn on chernozem soil in the Hajdúság region in 2009. The experiment was set up at the Látókép Research Site of the University ofDebrecen. We have included two sowing times (27 April, 26 May), six nutrition levels (control, N30+PK, N60+PK, N90+PK, N120+PK,N150+PK) and four genotypes (Jumbo, Enterprise, Prelude, Box-R) at two crop density levels (45 thousand ha-1).In the humid cropyear of 2010 the amount of precipitation exceeded the 30-year average by 184 mm in the cropping season; the averagetemperature exceeded the same by 0.8 C on the average of the examined months. The circumstances were most favourable for sweetcornproduction with the first sowing time, thus, this was when the yield of all hybrids was the highest.With early sowing time, the highest yield (23437 kg ha-1 yield) was obtained with Enterprise at 45 thousand ha-1 crop density level atN150 + PK nutrition level. The highest yield of the other three hybrids was 22253 kg ha-1 (Jumbo) 22286 kg ha-1 (Box-R) and 1873 kg ha-1(Prelude). With the second sowing time, the highest yield was obtained with Enterprise again (22237 kg ha-1) at 65 thousand ha-1 cropdensity level. With this sowing time the yield of Jumbo, Box-R and Prelude was 20888 kg ha-1, 17796 kg ha-1 and 17401 kg ha-1, respectively.We found that the highest yield was obtained at the highest nutrition levels (N120 + PK, N150 +PK) with the first sowing time, while the samewas obtained at lower nutrition levels (N90 + PK, N120 + PK) with the second sowing time.

scholarly journals Complex appreciation of agrotechnikal factors of sweet corn (Zea Mays L. convar. saccharata Koern.)

2010 ◽  
pp. 77-81
Author(s):  
Ádám Lente
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Plant Density ◽  
Sweet Corn ◽  
Maximum Yield ◽  
Research Station ◽  
Density Level ◽  
Chernozem Soil ◽  
Sowing Time ◽  
Late Sowing

Three agrotechnical factors (sowing time, fertilization, plant density) and the effect of two different genotypes on the yields of sweet corn was studied, in the dry and warm crop-year of 2009 on a chernozem soil in the County of Hajdúság. The experiments were carried out on the Látókép Research Station of Debrecen University. The experiment involved two sowing times (21 of April and 19 of May), six fertilizer levels (control, N30+PK, N60+PK, N90+PK, N120+PK, N150+PK) and two genotypes (Jumbo, Enterprise). Four plant density levels, 45 thousand ha-1, 55 thousand ha-1, 65 thousand ha-1 and 75 thousand ha-1 were used. In the early sowing time the highest yield was obtained with 65 thousand ha-1 plant density level and N120+PK treatment of Jumbo (18169 kg ha-1), while the maximum yield of Enterprise was 17818 kg ha-1 with 75 thousand ha-1 plant density level and N90+PK dose. In case of the late sowing time both hybrids gave the highest yield with 75 thousand ha-1 plant density level and N30 +PKtreatment, with a crop yield of 13143 kg ha-1 (Jumbo) and 14324 kg ha-1, ( Enterprise). 

scholarly journals Results of the sensory analysis of precision maize production

2019 ◽  
pp. 59-62
Author(s):  
László Duzs ◽  
Péter Ragán ◽  
Tamás Rátonyi
Keyword(s):  
Zea Mays ◽  
Layered Medium ◽  
Zea Mays L ◽  
Chernozem Soil ◽  
Maize Production ◽  
Leaf Stage ◽  
Experimental Station ◽  
Production Area ◽  
The University ◽  
Phenological Phases

This research was carried out in 2018, at the Látókép Experimental Station of the University of Debrecen in a moderately warm and dry production area, on deep humus layered medium-hard calcareous chernozem soil. In the scope of the research, the chlorophyll content of maize (Zea mays L.) was examined under field circumstances by means of local sensory measurements and we were looking for correlation between the obtained values and the amount of yield. Our measurements were carried out with Minolta SPAD-502 and GreenSeeker devices at 3 measurement times (4 leaf stage, 10 leaf stage and silking). It was found that phenological phases had an effect on the obtained SPAD and NDVI values and were in a slightly significant correlation with the yield. The most significant correlation was found between the results obtained during silking and the amount of yield. This may be because the least time has passed between the measurement time and harvest. Results obtained during the 10-leaf stage show excessive values in each case, which can be due to a measurement error. It was found that the phenological phase had an effect on the correlation of SPAD and NDVI values and the amount of yield. As the phenological phase progressed, the correlation between the measured results and yield has increased.

scholarly journals Hybrid-specific nutrient and water use of maize on chernozem soil

2013 ◽  
pp. 51-54
Author(s):  
Lajos Karancsi
Keyword(s):  
Maximum Yield ◽  
Field Research ◽  
Research Area ◽  
Control Treatment ◽  
Chernozem Soil ◽  
Set Up ◽  
The University ◽  
Optimum Nutrition ◽  
Corn Hybrid ◽  
Yield Decrease

The field research was set up on chernozem soil at the Látókép AGTC KIT research area of the University of Debrecen. The study focused on yield, water utilization, nutrient reaction and the amount of yield per kg fertilizer of corn hybrid NX 47279 in 2011 and 2012. Based on the yield results it can be concluded that the largest yield in 2011 was 15 963 kg ha-1 at level N120+PK, while in 2012, the maximum yield amounted to 14 972 kg ha-1 at level N90+PK. Surplus yield per kg fertilizer proved that in 2011 level N30+PK resulted in the highest surplus yield (42.3 kg kg-1) compared to the control treatment. In 2012, yield growth was 18.0 kg kg-1 compared to the control treatment. We measured at level N60+PK 17,5 kg kg-1 compared to at level N30+PK, at the N90+PK 17,7 kg kg-1 compared to at level N60+PK. level N30+PK kg kg-1, 17.5 kg kg-1 at level N60+PK and 17.7 kg kg-1 at level N90+PK compared to the control treatment. Results of the regression analysis showed that the amount of nitrogen fertilizer was 117 kg ha-1 in 2011 and 111 kg ha-1 in 2012 in order to reach maximum yield. Doses of fertilizers above the amounts previously mentioned resulted in yield decrease. Our results indicated that in the drought year of 2012 the hybrid used available water more efficiently than in 2011. The hybrid produced 59 kg ha-1 yield in 2012 and 51.9 kg ha-1 in 2011 at an optimum nutrition level.

scholarly journals Examination of the Nutrient and Water Utilization of Different Corn Genotypes in the Hajdúság

2014 ◽  
pp. 55-59
Author(s):  
Lajos Karancsi
Keyword(s):  
Research Area ◽  
Control Treatment ◽  
Chernozem Soil ◽  
Corn Hybrids ◽  
Water Utilization ◽  
Yield Production ◽  
Set Up ◽  
The University

The research was set up on chernozem soil at the Látókép MÉK research area of the University of Debrecen in Hungary. We examined the following factors of the hybrid P9494, P9578, PR37N01 and PR37M81 in 2013.Yield, yield production per 1 kg fertilizer, water utilization and nutrient reaction. We found that the best yield results were achieved at level N120+PK in case of hybrid P9494 (17 132 kg ha-1) P9578 (16 838 kg ha-1) and PR37N01 (17 476 kg ha-1) and at level N150+PK for hybrid PR37M81 (16 754 kg ha-1). Results of yield per 1 kg NPK studies indicate that the most intense yield growth occurred at level N30+PK compared to the control treatment. This means that yield production per 1 kg NPK was 39.2 kg kg-1 in the case of hybrid P9494, 54.2 kg kg-1 in the case of P9578, 17.6 kg kg-1 for PR37N01 and 44.2 kg kg-1 in the case of PR37M81. After comparing corn hybrids’ water utilization, our conclusion was that the control treatment achieved the worst results in the case of each hybrid (P9494: 20.8 kg mm-1, P9578: 21.0 kg mm-1, PR37N01: 26.2 kg mm-1, PR37M81: 19.5 kg mm-1). For hybrid P9494, P9578 and P37N01, the best water utilization results were measured at level N120+PK (31.5 kg mm-1, 31,0 kg mm-1 and 32.1 kg mm-1), while PR37M81 reached the highest values at level N150+PK (30.8 kg mm-1). We determined the hybrids’ nutrient reaction and its optimum fertilizer values. The best nutrient reaction results were achieved by hybrid PR37N01, while that of hybrid PR37M81 proved to be the weakest.

(Poly)phenols, Carotenoids, and Tocochromanols in Corn (Zea mays L.) Kernels As Affected by Phosphate Fertilization and Sowing Time

2020 ◽  
Vol 68 (2) ◽  
pp. 612-622 ◽  
Author(s):  
Peter E. Lux ◽  
Markus Freiling ◽  
Wolfgang Stuetz ◽  
Sabine von Tucher ◽  
Reinhold Carle ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Sowing Time ◽  
Phosphate Fertilization

scholarly journals Influence of cultivar on the content of selected minerals in red beet roots (Beta vulgaris L.)

2016 ◽  
Vol 28 (2) ◽  
pp. 143-150 ◽  
Author(s):  
Zofia Nizioł-Łukaszewska ◽  
Maria Gawęda
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
The Other ◽  
Red Beet ◽  
Lower Ability ◽  
Growing Conditions ◽  
Set Up ◽  
The University ◽  
The Impact

Abstract Beetroot is a vegetable that accumulate heavy metals. This is largely dependent on the cultivar, methods and growing conditions. The aim of the study was to determine the composition of elements in the roots of 15 cultivars of red beet. The analysis assessed the content of macroelements (Na, P) and heavy metals (Cd, Cr, Mn, Zn). Most soils of the Lesser Poland region are exposed to the impact of industrial and transportation pollution. The soils of this region are characterized by strong acidification as well as natural or increased heavy metal content. The experiment was set up at the experimental field of the Department of Vegetable and Medicinal Plants of the University of Agriculture in Krakow, in 2009-2010. On the basis of the performed analysis, ‘Opolski’ was chosen as the cultivar that was characterized by a high content of macroelements and lower ability to accumulate heavy metals than the other tested cultivars. The lowest ability to accumulate heavy metals (Cd and Cr) was found in the cases of cultivars with cylindrical root shapes, such as Rywal or Opolski. One can indicate such cultivars as Astar F1 or Nabab F1 as cultivars recommended for cultivation in ecologically threatened areas.

scholarly journals Asparagine synthetase in Zea mays

1984 ◽  
Vol 62 (1) ◽  
pp. 68-73 ◽  
Author(s):  
Ann Oaks ◽  
D. W. Ross
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Asparagine Synthetase ◽  
The Other ◽  
Heat Inactivation ◽  
Developing Seeds ◽  
Corn Roots ◽  
Nitrogen Donor ◽  
Glycine Max L ◽  
Specific Activities

Properties of asparagine synthetase from various tissues of Zea mays L. (embryo and endosperm from developing seeds; scutella and roots from young seedlings) and from cotyledons of Glycine max L. have been compared. The specific activities obtained with extracts from soybean cotyledons were 10–30-fold higher than activities obtained from any of the maize tissues. The apparent Km values (millimolar) were about 0.5 for glutamine and about 2.0 for [Formula: see text] for the enzymes from the various corn tissues and 0.18 and 3.0, respectively, for soybean cotyledons. The Vmax values were about twofold higher for glutamine compared with [Formula: see text] for corn embryos, endosperms, and scutella and for soybean cotyledons. With corn roots, on the other hand, a slightly higher Vmax was obtained when [Formula: see text] was the nitrogen donor. With the exception of corn root enzyme, glutamine protected asparagine synthetase from heat inactivation. [Formula: see text] had no protective effect on the enzyme from any of the tissues examined. The results indicate that the enzyme from corn (any tissue) is not as stringent in its requirement for glutamine as is the enzyme from soybean cotyledons and that the root enzyme responds to [Formula: see text] and glutamine in a unique fashion. The enzyme obtained from developing seeds (embryo or endosperm) was inhibited by asparagine. All the corn enzymes were inhibited by ADP to a greater extent than by AMP or ATP. Enzyme from the scutella or soybean cotyledons but not from the root or the developing embryo was inhibited by the glutamine analogue albizziin. Thus there appear to be important differences in the properties of asparagine synthetases extracted from various tissues of corn and soybean cotyledons.

scholarly journals Site and hybrid-specific agrotechnical models in sweet corn production

2011 ◽  
pp. 105-108
Author(s):  
Ádám Lente
Keyword(s):  
Crop Yield ◽  
Plant Density ◽  
Sweet Corn ◽  
Crop Yields ◽  
Density Level ◽  
Higher Plant ◽  
Sowing Time ◽  
Corn Production ◽  
High Plant Density ◽  
Crop Density

The effect of three agrotechnical factors (sowing time, fertilization, plant density) and two genotypes on the crop yield of sweet corn was examined on chernozem soil in the Hajdúság region in two different crop years. Compared to the 30-year average, the climate was dry and warm in 2009 and humid in 2010. The experiments were conducted at the Látókép Research Site of the University of Debrecen. In the experiments we applied two sowing times (end of April, end of May), six fertilization levels (control, N30+PK, N60+PK, N90+PK, N120+PK, N150+PK) and two crop density levels (45 thousand ha-1, 65 thousand ha-1). The hybrids we used were Jumbo and Enterprise. As regards the requirements of sweet corn production, the crop year of 2009 was dry and warm. The effect of moisture deficiency was more adverse on the crop yields with the second sowing time. On the contrary, the other examined year (2010) was significantly humid; the precipitation was 184 mm above the 30-year average and the temperature was average.In the dry and hot crop year, the best yields were obtained with the hybrid Jumbo (25677 kg-1) at 65 thousand ha-1 plant density level on the average of the fertilization levels. The crop yields of Enterprise were also the highest at high plant density level (24444 kg ha-1). With the second sowing time the highest yields were obtained at the higher plant density level (65 thousand ha-1) with both hybrids (Jumbo 18978 kg ha-1, Enterprise 18991 kg ha-1), which confirmed the good adaptation capability of these hybrids at high plant density level. In humid crop year with early sowing time the highest yielding hybrid was Enterprise (at 45 thousand ha-1 crop density level 20757 kg-1), at the same time, Jumbo was best yielding at the higher plant density level (18781 kg-1). With the second sowing time the highest crop yield was obtained with Enterprise again (20628 kg ha-1 at 65 thousand ha-1 plant density level). With this sowing time the average yields of Jumbo, was 18914 kg ha-1 respectively. We found that dry crop year and early sowing time provided the best conditions for sweet corn production; the highest yields were obtained under these circumstances, which might be the results of the outstanding water management of chernozem  soils.

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