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• Evaluation of the yield parameters of maize (Zea mays L.) hybrids of different FAO numbers in an irrigated crop stand

  69-84

  János Nagy

  Annabella Zelenák

  Árpád Illés

  Csaba Bojtor

  Béla Gombos

  Atala Szabó

  Anikó Nyéki

  Adrienn Széles

  Views:

  157

  Five maize hybrids with different maturity and FAO-number (350, 380, 420, 490 and 510) were tested at the Látkép Experiment Site of the University of Debrecen. In 2022, an especially drought year, the rainfall deficit (456 mm) was compensated by irrigation. A large number of measurements were taken to record plant height, thousand grain weight, leaf area index, and ear parameters. The highest yield was obtained with the FAO 420 hybrid (H-11), 18.397 t ha-1. The results of the FAO 350 (H-9) and FAO 380 (H-10) hybrids (15.657–15.678 t ha-1) were identical. The yields of the hybrids FAO 490 (H-12) and FAO 510 (H-13) were significantly different (14.973 and 17.395 t ha-1). The obtained research results show that yields are mainly determined by the thousand grain weight.

• Smart parameter analysis of maize hybrids with different FAO numbers (Zea mays L.)

  5-20

  János Sólyom

  Csaba Bojtor

  Árpád Illés

  Annabella Zelenák

  János Nagy

  Views:

  181

  Maize is a heat-intensive crop and requires a lot of water. Rainfall is the main meteorological factor determining the yield, and water scarcity is the biggest problem in maize production. When the growing season is dry and temperatures are above average, soil drought typically develops in the summer. The dry autumn-winter period preceding the growing season increases the risk of drought. In our research, we studied five different FAO maize genotypes using intensive cultivation techniques, determining the yields that can be obtained and the main yield parameters that determine the yields and the relationships between them. In our experiment, all five maize hybrids showed excellent yield performance. The highest yield was obtained by hybrid H11 (18.4 t/ha), which exceeded the values of the other tested hybrids by about 5.7–22.8%. Significant differences were measured between the individual grain weight values of the hybrids. Hybrid H13 stood out with the highest individual grain weight value, exceeding the other genotypes by 1.6–25.9%. Based on the correlation analysis between the individual parameters, we demonstrated a significant (p<0.05) positive correlation of individual grain weight with individual grain number values (r=0.568) and also with grain moisture at harvest (r=0.592). Our results indicate that each of the measured individual yield parameters contribute differently to high yield, resulting in significant effects.