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• Effect of some agrotechnical factors on maize (Zea mays L.) on the chemical composition of grain yields

  109-120

  Péter Pepó

  Muhoja Sylivester Nyandi

  Views:

  49

  In a long term experiment (established in 1983), we investigated the grain yield parameters of maize in the year 2023 with favourable water supply on chernozem soil with calcareous loess. The tests were carried out with the DA 7250 NIR instrument. Crop rotation did not significantly affect protein, oil and starch content. The effect of irrigation varied depending on the rotation. In mono- and tri-cultures, irrigation decreased protein content (mono: dry 7.20%, irrigated 6.90%; tri: dry 7.44%, irrigated 7.24%), while starch content increased (mono: dry 64.97%, irrigated 65.22%; tri: dry 64.78%, irrigated 65.06%). Opposite effects were observed in bicultural conditions (protein - dry: 6.88%, irrigated: 7.21%; starch - dry: 65.16%, irrigated 64.18%). Among the agrotechnical elements, fertilisation had the highest significant effect on protein and starch content of maize. In all three crop rotations, increasing fertiliser rates increased the protein content (mean of dry and irrigated treatments from 6.51% to 7.39% in monoculture, from 6.56% to 7.35% in biculture, from 6.97% to 7.35% in tri-culture), 55%), while, on the contrary, the starch content was reduced (from 65.99% to 64.55% in monoculture, from 65.78% to 63.94% in biculture, from 65.15% to 64.42% in triculture). The oil content was not affected by fertilisation.

• The international and domestic situation of peanut production, challenges and opportunities in Hungarian agriculture

  105-120

  Balázs Csizi

  Adrienn Széles

  János Nagy

  Zoltán Balla

  Views:

  130

  Peanuts are one of the most widely consumed oilseeds in the world, with the United States Department of Agriculture (USDA) reporting that 50.48 million tonnes of peanuts were produced worldwide in 2024 (Agrocrops 2024, USDA 2025)
  Peanuts are used in a variety of ways – as a key ingredient in many snacks, confectionery and peanut butter, and as a protein-rich feed for livestock. Similarly, peanut oil is used for frying, peanut flour for cooking and peanut shells for heating.
  Peanut cultivation could open a new era in domestic agriculture. As is well known, the cultivation of peanuts is becoming increasingly important in world agriculture, as they are a popular crop worldwide for their nutritional value and versatility. Demand for peanuts on the international market continues to grow, especially among health-conscious consumers.
  China produces the highest annual volume of peanuts. According to market statistics, the best quality crops come from farms in Argentina and the USA, and large quantities are grown in Asia (Agrocrops 2024).
  Peanuts were first introduced to Europe in 1840 by Jaubert, from the Cap Verde Islands to Marseilles. It was also used at one time to make coffee grounds In 1925, the seed, separated into two leaves and roasted, was marketed in the German Reich and Switzerland under the name of African walnut coffee (Agrártudományi Közlemények 09/1957). According to König, however, the peeled, defatted and roasted groundnut was marketed as Austria coffee (MTA Urania 1923, Ortutay 1977).
  In Hungary, in the 1930s, the Agricultural Experimental Institute of the Hungarian Great Plain was involved in experiments on peanut cultivation In the 1950s, under the direction of János Bruder, 300 hectares of peanuts were cultivated in the vicinity of Mezőhegyes and Medgyesegyháza (MTA Urania 1923, Tétényi 1951, Karakasevich 1957). Although peanuts, which occupy a prominent place in world agriculture, entered the domestic cultivation sector at the beginning of the last century, they did not become a significant crop in Hungary despite their initial success. Today, Hungarian peanuts are the winner of climate change, based on the experience of recent years (Balla 2021).

• Evaluation of maize (Zea mays L.) parameters in different phenophases as a function of heat sums in irrigated production

  85-103

  Hella Kalina

  János Nagy

  Views:

  231

  In Hungary, maize is one of the most widely grown crops, with a stable area of 0.8–1 million hectares. The reason for this is the exceptional yield of the crop, which allows a significant amount of value to be produced per unit area. Domestic production is mainly used for animal feed, particularly in the poultry and pig sectors, and for feeding ruminants. Its use is not only as food or fodder crops, but is also increasingly important for the production of oil, bioethanol and energy. The intrinsic values of maize – protein, starch and oil – are crucial for its use in industry, feed and food. The nutrient supply of maize is essential to ensure plant development. Adequate nutrient supply is essential to ensure sustainable farming and high yields. The nutrient rates applied must be adapted to the needs of the crop so that the hybrids tolerate stress caused by seasonal effects well and yield security is maintained.
  Water deficit is one of the most serious abiotic stresses that negatively affect plant growth, development and yield. Extreme weather conditions reduce yields and threaten stable production. The content, quality and industrial use of maize are closely linked to genetic, ecological and agrotechnical factors. By selecting the appropriate hybrid and applying the appropriate cultivation technology, yield indicators can be adapted to different purposes. In the agrotechnical studies for 2024, the main yield determinants were analysed, and weather was evaluated for each agrotechnical element and phenophase. The research is mainly based on meteorological measurements at the Látókép Experimental Station of the University of Debrecen. In the winter period 2023/24, 283 mm of precipitation fell in 6 months, 69 mm above the long-term average. In June, the weather was free of extremes, with evenly distributed temperatures, but above the multi-year average. The above average rainfall (66 mm), combined with soil moisture in the deeper layers of the soil, ensured a good water supply.
  The average temperatures in both July and August were close to record highs (24.2 °C). The exceptional warmth in August (mid to late August) was mainly due to the shortening of the ripening phase. The 29 mm of precipitation in July was less than half the multi-year average and the following month of August was also dry (33 mm). The summer total was 128 mm. In early September, the unseasonably warm weather continued, with the first decade showing a positive anomaly of nearly 7 °C. The physiological maturity of the maize and its rapid drainage and drying allowed early harvesting. The year 2024 was marked by a marked dichotomy in terms of maize production.
  Our field maize experiments allowed us to record the phenophases of the plants throughout the growing season (Hanway scale). As a new result, our analyses showed that, especially in the generative phase, more accurate data were obtained when taking into account the useful heat sum (HU) calculations. From emergence to silking, 60 days passed using 545 HU of heat sum. From silking to waxy maturation (R4) 32 days and 422 HU were needed. It was found that from silking to physiological maturation, typical of the genotype, 815 HU were required. The yield of maize hybrid H470 under irrigation is excellent (20.76 t/ha). The dry matter incorporation dynamics of the hybrid is outstanding. Dry matter gain was measured weekly. At the physiological maturation phenophase (30 August 2024), using 1360 HU, the dry matter content was 77.1%. The dry matter measurements allowed the evaluation of the water loss dynamics of a maize hybrid with excellent yield potential. Measurements and analyses were performed every seven days. The water loss rate was 5.5% in the first week, 5.8% in the second week, 4.6% in the third week and 6.9% in the fourth week. At physiological maturation, grain moisture showed a favourable value (22.9%). After physiological maturation, the daily water loss was 0.23% during the 21-day period.

• Analysis of individual parameters of maize (Zea mays L.) hybrids in irrigated long-term field experiment

  49-83

  Ottó Dorogházi

  Views:

  41

  The sustainable development of crop production is one of today's most important agronomic challenges. Modern technologies such as precision farming, including nutrient management and irrigation strategies, play a key role in optimising yields and ensuring sustainability. In an experiment set up at the DE AKIT DTTI Látókép Crop Production Experiment Site, we investigated the phenometric (leaf area index, development dynamics), physiological (relative chlorophyll content, NDVI value, water release dynamics) and yield parameters (yield, individual ear and kernel weight, individual kernel number, thousand kernel weight, protein, oil, starch and grain moisture content). Based on the evaluation of yield, it was found that the highest yield (20.95 t/ha) was obtained by the mid-ripening FAO 390 hybrid, significantly higher than the yield of the other examined hybrids. Altogether, it was found that there were significant, in many cases statistically significant, differences in the phenometric, physiological and yield parameters studied between maize hybrids of different maturity, allowing for a precise differentiation of the main traits of each hybrid.