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Performance of Turmeric and Zinger Under Different Light Levels for Agroforestry Systems

M. G. Miah
Dept. of Agroforestry and Environment, BSMRAU, Gazipur,

M. M. U. Miah
Assistant Professor
Dept. of Agroforestry, HSTU, Dinajpur.

M. A. Rahman
Dept. of Agroforestry and Environment, BSMRAU, Gazipur.

T. Ahamed
Dept. of Agroforestry and Environment, BSMRAU, Gazipur.

Abstract/ Executive Summary:

Performance of turmeric and zinger under different light levels was evaluated during the period from May 1999 to January 2000 at the research farm of BSMRAU, Gazipur, Bangladesh. The light levels were 100, 75, 50 and 25% PAR. Except plant height (both in zinger and turmeric), number of leaves per plant (zinger only), leaf length and leaf breadth (turmeric only), all other studied parameters of both species showed the highest values under 75% PAR. The plant height of both species, number of leaves per plant of zinger, leaf length and leaf breadth of turmeric were increased with the decrease of light levels. Significantly the tallest plant of both turmeric and zinger were observed under minimum light level, i.e. 25% PAR. In case of yield, zinger produced significantly the highest and the lowest yields under 75% PAR (23.76 t/ha at final harvest) and 25% PAR (16.19 t/ha at final harvest), respectively. The yield of zinger obtained under 50% PAR was statistically similar to that of 100% PAR, though yield recorded under 50% PAR was numerically higher than that produced under 100% PAR at all sampling dates. Turmeric also produced the highest yields less than 75% PAR (37.70 and 42.66 t/ha at second and final harvesting dates, respectively) and was also statistically similar to that of 50% and 100% PAR except the first harvesting date. Like zinger, significantly the lowest yield of turmeric was found under 25% PAR level.

Keywords: Zinger, Turmeric, Reduced light, Yield, Yield components

Location: BSMRAU Research Farm

Start Date: 00-00-1999

End Date: 00-00-2000

Program Area: Farming System

Commodity: Turmeric

Objectives:

To investigate the performance of turmeric and zinger under different reduced light levels and to advocate them for growing in Agroforestry system.

Methodology:

Two independent experiments were carried out for two annual crops at the BSMRAU Research Farm during the period from May 1999 to January 2000 in upland condition belongs to the Salna series under the Madhupur tract. There were four treatments comprising of different light levels in the form of Photosynthetically Active Radiation (PAR). The light levels were 100, 75, 50 and 25% PAR. The reduced light levels (75, 50 and 25% PAR) were created using mosquito nets of different sieve size. The mosquito nets were hanged up to 1.5 m over the plots. The light (PAR) levels under net were measured by Sunfleckceptometer Accu PAR (Model 800-755-2751). The treatments were arranged in Randomize Complete Block Design with three replications. Individual plot size was 3 m x 2.5 m and replication-to- replication distance was 2 m. The varieties used in this experiment were Dimla (T -027) for turmeric and local for zinger. The crops were fertilized with recommended doses of fertilizers consisting of cowdung, urea, TSP and MP. The recommended dose of cowdung, N, P and K for turmeric were 10 tons, 80 kg/ha, 30 kg/ha and 60 kg/ha and for zinger were 10 tons, 110 kg/ha, 40 kg/ha and 100 kg/ha, respectively. The crops were established during the first week of May 1999. Spacing for turmeric and zinger were 50 cm x 25 cm and 50 cm x 25 cm, respectively. All intercultural operations and management practices were done properly throughout the growing season. Data on growth, yield contributing characters as well as yields of the studied crops were recorded. Data were analyzed using lRRIST AT and mean separation was performed followed by DMRT.

Source of Information: J. Sci. Tech. 3: 18-23 (2005)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Therefore, it is concluded that both turmeric and zinger can be grown successfully under 25% reduced light levels for their maximum yield, where turmeric can be grown even up to 50% reduced light levels without significant yield loss and zinger can even produced numerically higher yield up to 50% reduced light level than that of 100% PAR level. However, the results of these studies should be validated in actual field condition for recommendation in wider uses.

Knowledge Management: Journal