Growth, Zinc Cocentration and Absorption Rates of Transplanted Oilseed Rape (Brassica Napus L.) to Zn-HEDTA and Root Pruning

Mulyati, Mulyati (2018) Growth, Zinc Cocentration and Absorption Rates of Transplanted Oilseed Rape (Brassica Napus L.) to Zn-HEDTA and Root Pruning. Academia Journal of Agricultural Research. pp. 65-72. ISSN 2315-7739

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Abstract

Transplanted oilseed rape (Brassica napus L.) plants were reported to be sensitive to zinc (Zn) deficiency and had a higher external Zn requirement. However, it was not clear whether the increased external Zn requirement was due to transplanting. The aims of this study were to clarify the dynamics of root and shoot recovery growth after transplanting and to assess the effect of Zn supply and root pruning on growth and Zn absorption by transplanted oilseed rape. Transplanted oilseed rape was grown in chelate-buffered nutrient solution and harvested successively at 5-day intervals from 0 to 25 days after transplanting. Treatments consisted of two levels of Zn-HEDTA (0.02 and 5.0 µM) and two root treatments (unpruned and 50% root pruning). The experiment was arranged in a Randomized Complete Block Design (RCBD). Plants were harvested at 5, 10, 15, 20 and 25 days after transplanting. Significant treatment effects were separated with LSD at P £ 0.05. Results showed that low Zn solution and 50% root pruning depressed the growth rates including shoot and root dry weights. The root dry weight of plants with pruned roots recovered only 70% of that with unpruned roots. In addition, plants with unpruned roots had higher Zn absorption rate in their shoot and root dry weights. High solution Zn alleviated but did not fully overcome the effects of pruning on growth of transplanted oilseed rape. Hence, it would be worthwhile to examine the rhizosphere modification including organic acids released by growing roots after transplanting and their response to Zn supply and root pruning.

Item Type: Article
Keywords (Kata Kunci): Transplated oilseed rape, Zn-HEDTA, root pruning.
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian
Depositing User: Prof. Ir. Mulyati SU.,Ph.D
Date Deposited: 17 Oct 2021 23:56
Last Modified: 17 Oct 2021 23:56
URI: http://eprints.unram.ac.id/id/eprint/25021

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