The effect of biostimulators on the content of crude oil and total protein in winter oilseed rape (Brassica napus L.) seeds
Marek Gugała | Anna Sikorska | Krystyna Zarzecka | Krzysztof Kapela | Iwona Mystkowska
The objective of the study was to determine the effect of the experimental factors on the seed quality of three winter oilseed rape cultivars. The following factors were studied: I-three winter oilseed rape morphotypes: population, hybrid restored characterised by a semi-dwarf growth pattern, hybrid restored characterised by a conventional growth pattern; II-two sowing methods: a spacing of 22.5 cm, a spacing of 45.0 cm; III-four types of biostimulants: control-no biostimulants, the biostimulant Tytanit®, Asahi®SL, Silvit®. Seed samples were subjected to chemical analysis to determine: crude oil, total protein and crude fibre. Natural stimulants of plant growth and development contributed to an increase in crude oil ranging from 7.4 to 9.5 g kg–1 d.m., on average, compared with control. The biostimulants applied did not affect total protein content which was, however, affected by meteorological conditions in individual study years as well as the genetic factor. Biostimulants increased crude fibre content compared with control.
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