Effects of nitrogen fertilization rates on yield and quality of fluecured tobacco grown on bris sandy soil in Malaysia

W. I. Wan Aznran and H. Salbiah

Abstract

The effects of N rates on yield and quality of flue-cured tobacco grown on bris sandy soil in Kelantan were studied during the 1986 and 1987 growing seasons. Four rates of N fertilizer (40, 60. 80 and 100 kg N/ha) were tested in 1986 and another four (60, 80. l(X) and 120 kg Niha) in 1987. The tobacco were of TAPM 36 and TAPM 13 varieties. Application in the region of 80 kg N/ha resulted in significantly higher yield and better qualitv. The results confirmed the importance of increasing N rates to achieve higher yield without jeopardizing the visual quality of the cured tobacco leaves. The results also indicated that there was a significant interaction between N rates and varieties on crop index and on the percentage of non descript grade in 1987. Data obtained suggested that the desirable rate of N is in the region of 80 kg N/ha for tobacco cultivated on bris sandy soil under the traditional supplementary irrigated svstem.

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