About yield stability of winter triticale in different climatic conditions
2001
Alaru, M. | Jaama, E. | Laur, Ue. (Estonian Agricultural Univ., Tartu (Estonia). Dept. of Field Crop Husbandry)
Field trials were conducted from September of 1996 to August of 2000. The objective of this research was to determine the effects of seeding rates from 200 up to 700 seeds m (-2) (at an interval of 50 viable seeds m (-2)) and nitrogen rates from 0 up to 136 kg N ha (-1) (at an interval of 34 kg N ha (-1)) on the yield structure and formation and yield quality of winter triticale 'Modus'. Field trials were initiated according to the methodology of E. Lauk. Experimental disain was a split/plot with N-rates as main plots and seeding rates as sub-plots. Nitrogen was applied as ammonium nitrate top-dressed in the spring at the beginning of triticale regrowth. To investigate yield formation and structure, two parallel 1-m row sections in each plot were marked with stakes. Prior to harvest plants from the marked rows were dug out and bound separately. From these sheaves yield components(plants m (-2), spike-bearing tillers m (-2) and plant (-1), tillers number plant (-1), above-ground biomass, height of tillers, length of tillers and length of spikes, spikelets spike (-1), and kernel weight) were measured or counted. Regression, correlation and dispersion analyses were performed on the data
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