Influence of doses of mineral fertilizers on productivity of bluish spring mustard under North Eastern Forest-steppe of Ukraine

A. V. Melnyk, S. V. Zherdetska

Анотація


It was established that, under the conditions of the north-eastern forest-steppe of Ukraine, the application of mineral fertilizers under mustard cultivars, Prima and Retro, increases the duration of vegetation by an average of 6 days.

Application of fertilizers leads to an increase in the height of plants of mustard seed of Prima variety by 9,4 cm, Retro variety by 8,5 cm, while the number of branches of the first order increased by 0.6 and 0.9 pieces respectively. The addition of fertilizers also increased the number of leaves in the prima variety by 1,9 pieces per plant, and their weight increased by 0,8 g. In Retro variety, the average number of leaves increased by 1,45 pieces, and weight increased by 0,7 g.

In the Prima variety, for the application of fertilizers N30P30K30, the leaf surface area increased by 10,4 thousand m2/ha, while the chlorophyll content increased by 0,05 mg/g. For the application of fertilizers N60P60K60, the area of the leaf surface increased by 16,0 thousand m2 / ha, and the chlorophyll content by 0,03 mg/g compared with the control. In the Retro variety, for the application of fertilizers, N30P30K30 and N60P60K60, the leaf surface area increased by 11,0 and 14,7 thousand m2/ha, and the chlorophyll content in the leaves by 0,01 and 0,05 mg/g, respectively.

The fertilizer N30P30K30, increased the yield of Prima variety by 4,7 с/ha, and the Retro variety by 4,1 с/ha. The increase in fertilizer rates to N60P60K60 increased yields by 6,1 с/ha for Prima variety and by 5,3 с/ha for Retro variety, but the difference between the rates of fertilizers is not significant.

Scientific results of experimental studies will be the basis for recommendations on technologies for growing yellow mustard in the area of north-eastern forest-steppes of Ukraine, aimed at the realization of high genetic potential of varieties.


Ключові слова


yellow mustard, mineral fertilizers, vegetation period, morphological parameters, leaf area, chlorophyll, yield

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Посилання


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