Researches regarding breaking and parasitary lodging of maize in relationship with the main technological factors
1986
Munteanu, I. | Nagy, E. | Timpeanu, I. | Bilaus, I. | Stafanescu, M. | Pasca, I. (Statiunea de cercetari agricole, Turda (Romania))
The paper deals with the results regarding breaking and parasitary lodging of maize plants obtained on 8 hybrids, in relationship with sowing time, fertilization level, density per hectare and sowing distance, during 1980-1985. Since the present-day zoned hybrids are more resistant than preceding ones, the reaction related to sowing time and fertilization level is moderate and variable within relatively restricted limits. However the N-doses of 150 kg a.i./ha and over 150 kg a.i./ha are recommended only for Turda 199, Pioneer 39781681 and Turda 213 hybrids. Crop density highly influences the reaction of hybrids to breaking and lodging. Thus, to the highest densities of 90,000 plants/ha only Turda 199 than Pioneer 3978 and Turda 213 proved to be resistant. Genotype, environmental conditions of each year, crop density and the interaction among these factors, highly influenced the breaking and parasitary lodging of maize plants. Breaking and parasitary lodging of the plants may be controlled without additional expenses by applying certain technological elements according to the physiological requirements of the cultivated hyb
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