The effect of external factors on stalk rot and ear rot of maize hybrids in field trials of the Osijek Agricultural Institute [Yugoslavia], 1967-1981
1983
Radic, Lj. | Vekic, N. | Brkic, I. | Vujevic, S. | Zelinski, Z. (Poljoprivredni institut, Osijek (Yugoslavia). Radna jedinica za oplemenjivanje i sjemenarstvo kukuruza)
The occurrence of maize hybrid cob and stalk rottening due to climatic conditions was monitored throughout 15 years. It was established that cold nights and high humidity at the stage of intensive growth, high maximum temperatures in the period of blooming and grain swelling, and a large number of sunny hours per day had a positive influence on spreading of rottenness in the stalk. The largest number of affected plants occurred with the hybrids of later FAO groups, which was not a regular phenomenon. The hybrids tested exhibited considerable differences in the resistance of stalks to rottenness. High maximum temperatures at the stage of intensive growth favoured development of rusty cob mold, as well as high precipitation, high relative humidity during blooming, grain swelling and beginning of ripening. The white cob mold infection averaged at 0.90% to 11.01% for all hybrids. The factors which influenced the development of white mold decreased in direct sunshine at the stage of intensive growth, heightened minimum temperatures during blooming, grain swelling and ripening, and heightened daily temperatures during milk and wax ripeness
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