A dohány ásványi táplálása

Translated title of the contribution: Mineral nutrition of tobacco

Research output: Contribution to journalArticle

Abstract

A review is given of the general principles involved in the cultivation of tobacco, including the ecological requirements of the crop. Major factors influencing quality were analysed, with special regard to the role of individual nutrients, and the conclusions found in international and Hungarian literature were summarised. Optimum diagnostic values are presented for checking the nutritional status of the crop. Experiments were carried out on the nutrient uptake of tobacco in the course of the growing season. It was found that the crop extracted 60-70 kg each of N and K, 26 kg Ca, 11 kg Mg and 6 kg P from the soil to produce I t air-dry leaf yield together with the relevant by-products. The results could be used to calculate the nutrient requirements of the planned yield for fertiliser recommendations. It should be noted that a high N rate led to a leaf yield of poor quality. Depending on the humus content and N-supplying capacity of the soil, the N fertiliser requirement of the planned yield may range from 0 to 30 kg/t for the Virginia variety. Knowledge of the NO 3-N content of the 0-60 cm soil layer in early spring may lead to a reduction in the specific N requirements and possibly the complete omission of N fertilisation. A national survey carried out in 1990 revealed that in dry years like 1990 the yield, mineral composition and quality of tobacco could exhibit extreme fluctuations between locations if no irrigation was applied. In locations with a soil pHKCl of below 5 (such as the Nyirseg region in NE Hungary) heavy metals may be accumulated to a very high extent in the leaves. Liming may be required for human health reasons, in order to reduce the heavy metal load to smokers. In acidic locations values of 0.52 mg Co, 1.89 mg Cd, 1.17 mg Pb, 5.40 mg Ni, 58 mg Zn and 471 mg Mn were recorded in the dry matter, while in neutral or limy areas the following mean values were obtained: 0.02 mg Co, 0.38 mg Pb, 0.33 mg Ni, 20 mg Zn and 82 mg Mn.

Original languageHungarian
Pages (from-to)309-322
Number of pages14
JournalNovenytermeles
Volume55
Issue number5-6
Publication statusPublished - 2006

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plant nutrition
tobacco
soil
heavy metals
crops
leaves
fertilizer requirements
national surveys
liming
disease diagnosis
nutrient requirements
humus
Hungary
nutrient uptake
byproducts
mineral content
nutritional status
human health
nitrogen fertilizers
growing season

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

A dohány ásványi táplálása. / Kádár, I.

In: Novenytermeles, Vol. 55, No. 5-6, 2006, p. 309-322.

Research output: Contribution to journalArticle

Kádár, I 2006, 'A dohány ásványi táplálása', Novenytermeles, vol. 55, no. 5-6, pp. 309-322.
Kádár, I. / A dohány ásványi táplálása. In: Novenytermeles. 2006 ; Vol. 55, No. 5-6. pp. 309-322.
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