Naslov
Maleic hydrazide residues in flue-cured tobacco

Autori
Perović, Đurđica ; Čavlek, Miroslav

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
CORESTA Abstracts / - : Cooperation Centre for Scientific Research Relative to Tobacco (CORESTA), 1995, 26-26

Skup
Agronomy & Phytopathology joint meeting

Mjesto i datum
Oxford, Ujedinjeno Kraljevstvo, 09.10.1995. - 12.10.1995

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
flue-cured tobacco; suckericides; residues

Sažetak
Sucker control and topping are essential measures in the intensive, up-to-date production of large-leaved tobacco of the Virginia Type. Various contact and systemic agents are used for sucker control. The most frequently used of the systemic agents is maleic hydrazide in the form of sodium, choline, diethanol amine or triethanol amine salts and potassium salts with 30% active substance - maleic hydrazide. Maleic hydrazide inhibits the process of glycolitic decomposition of carbohydrates, prevents the biosynthesis of proteins and cell multiplication. This action of maleic hydrazide on plant growth has found a practical application in increasing the productivity of tobacco. Maleic hydrazide is simple to apply, and its effectiveness in sucker control is almost total. The experiment was carried out on flue-cured tobaccos, treated with systemic suckericides as follows:- MH30 Royal 8, 10, 12 and 15 l/ha ; - FAIR30 9 and 12 l/ha ; - FAIR PLUS 12 and 16 l/ha. Maleic hydrazide residues were determined by the reduction and hydrolysis of maleic hydrazide into hydrazine, and hydrazine was determined spectrophotometrically with p-dimethyl-aminobenzaldehyde. There is no law in Croatia on the permitted level of MH residues. The tobacco analyzed contained the following levels of maleic hydrazide residues: tobaccos treated with MH30 Royal : up to 22 ppm ; tobaccos treated with FAIR30 : up to 51 ppm ; tobaccos treated with FAIR PLUS : up to 32 ppm.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA