Search

Search Results

• Harvest time evaluation of sweet maize (Zea mays L. convar. saccharata Koern) hybrids based on dry matter and sucrose yield dynamics

  53-68

  János Nagy

  Cintia Demeter

  Zsuzsanna Bakos

  Károly Simon

  Hajer Mohamed Ibrahim Sidahmed

  Views:

  145

  Hungarian sweet maize production, in demand worldwide, averages 500,000 tonnes over several years, thanks to well-chosen precision farming technology. In agriculture, the success of sweet maize production is influenced by many factors, and therefore we are constantly faced with practical challenges. Limited data are available on the dynamics of sugar accumulation in plants, especially under abiotic stress. We investigated a sweet maize hybrid for public cultivation in an experiment set up on the campus of the University of Debrecen, Faculty of Agricultural and Food Sciences and Environmental Management. Quality parameters were determined from grain samples taken at harvest under laboratory conditions at the Agricultural Instrument Centre of the Faculty. In our sweet maize field experiment, dry matter content and sucrose content were measured in grain samples taken at four sampling times. Based on our measurement results, we found that the dry matter gain dynamics of the four examined sweet maize hybrids were different, all with linear increasing trends. Based on our research results, we demonstrated that dry matter and sucrose yields of all four hybrids were most favourable for harvesting at the third sampling time. Compared to the first sampling date, in two weeks, dry matter yield increased by 46% and sucrose content tripled in a tonne of sweet maize grain yield. Thereafter, dry matter and sucrose gains slowed down.

• Analysing the yield elements of sweet maize (Zea mays conv. saccharata Koern) in irrigation production

  97-111

  János Nagy

  Cintia Demeter

  Zsuzsanna Bakos

  Atala Szabó

  Lúcia Sinka

  Hajer Mohamed Ibrahim Sidahmed

  Károly Simon

  Árpád Illés

  Views:

  182

  The success of sweet maize cultivation is affected by a number of environmental and technological factors. In addition to choosing the appropriate genotypes to cope with stress effects, it is important to use precision farming techniques, nutrient supply and irrigation adapted to the genotype. Sweet maize is one of the most drought-sensitive crops in arable farming, therefore, the use of precision irrigation farming techniques is essential for successful management. Our experiments were carried out under controlled conditions in three different crop years (2020, 2021, 2022). In June and July, irrigation was carried out with drip irrigation. The raw grain weight per hectare of the GSS sweet maize hybrid differed significantly from year to year. In the unfavourable year 2022, the raw grain yield was 10.400 t/ha. In contrast, in 2021 and 2020, the grain yield was significantly higher, at 1.466 and 2.810 tonnes per hectare, respectively. We measured close, consistent relationships between rainfall and irrigation volume when analysing the combined water use. For 1 mm of water (from precipitation and irrigation), we measured 27.1 kg of grain weight in 2020; 25.6 kg in 2021; and 23.5 kg in the unfavourable growing year 2022.