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Nutrient Requirement and Economics of Sugarcane Production in Recently Developed Alluvial Soils (char Land)

S. M. Bokhtiar
Soils and Nutrition Division, Bangladesh Sugarcane Research Institute, Ishurdi-6620, Pabna, Bangladesh

Abstract/ Executive Summary:

Field experiments were executed in two consecutive cropping seasons of 1997- 98 and 1999-2000 in alluvial soils of recently developed Char land at Pakshi, Ishurdi of Bangladesh. The present experiment was made to study the growth and yield response of sugarcane to different levels of N, P, K and S as well as economics of fertilizers use in Char land soils of Bangladesh. Sugarcane yield and its components like tiller and millable cane stalk were significantly influenced due to different combinations of N, P, K and S nutrient levels in both the years. The highest tiller number of 195.60 x 10³ ha^-1 and 135.1x10³ ha^-1 were found in T₆ treatment receiving highest rate of fertilizers while the lowest tiller number of 128.90 x 10³ ha^-1 and 94.1 x 10³ ha^-1 were found from T_o treatment (control) in the first and second year, respectively. Like tiller production, the maximum number of mill able cane stalks of 122.70 x 10³ ha^-1 and 82.03 x 10³ ha^-1 was obtained from T₆ treatment in both the years. Highest sugarcane yield of 77.29 t ha^-1 was produced with T₆ treatment and highest yield of 83.93 t ha^-1 was found in T₅ treatment that was significantly superior to rest of the treatments in the first and second year, respectively. Increase in cane yield was 23.2, 37.2, 49.9, 48.2 and 53.4% in the first year and 37.8, 36.7, 46.9, 52.4 and 47.5% in the following year over control. The result also indicated that due to every increases of N, P, K and S nutrient, cane yield had increased but the effects among the treatments T₄, T₅ and T₆ were statistically at par i.e. higher doses of N, P, K and S did not result any significant effect on cane yield. Recoverable sucrose per cent was not significantly influenced owing to different levels of nutrient applied in the experiment. During 1997-1998 cropping year the floodwater of about 80 cm continued for one and a half months had affected the aged eight-month crop resulting in low cane yield. In 1999- 2000 at the time of harvesting the experimental plot contains about 20 per cent moisture that affected sucrose per cent in the cane juice.

Keywords: Nutrient, Economics, Sugarcane, Alluvial soil.

Location:

Start Date: 00-00-1997

End Date: 00-00-2000

Program Area: Crop-Soil-Water Management

Commodity: Sugarcane

Objectives:

The present experiment was made to study the growth and yield response of sugarcane to different levels of N, P, K and S as well as economics of fertilizers use in Char land soils of Bangladesh

Methodology:

Field experiments were executed in two consecutive cropping seasons of 1997- 98 and 1999-2000 in alluvial soils of recently developed Char land at Pakshi, Ishurdi of Bangladesh. The data of 1998-99 could not be obtained of due to devastation of flood resulting in a serious damage of the sugarcane crops. Characteristically the soil was calcareous and sandy loam in texture with pH (1:2.5) - 8.2. The soil had total N- 0.05 %, organic C- 0.84 %, and the Ca, Mg and K 22.15, 1.88 and 0.35 meq/100 gm soil, respectively. The available P, Sand Zn contents were 5.4, 15.2 and 0.34 μg g^-1, respectively. Experiments were laid out in a randomized complete block design with four replications, Three-eyed setts of variety Isd 20 were transplanted in December each year and the crop was harvested after 13-month. The unit plot size was 8m x 6m. Some common cultural practices like disease and insect control were followed when required. The urea-N was applied in two equal splits: at the establishment stage of settlings (21 d) and at the tiller completion stage (150 d). Full dose of triple superphosphate, half of muriate of potash and full dose of gypsum were applied to all plots during land preparation to supply P₂0₅, K₂0 and S, respectively. The rest amount of muriate of potash was applied as top-dressing at the tiller completion stage (150 d). The farmers' of the country are cultivating sugarcane in Char land without applying required dose of fertilizer. It is well agreed that fertilizers play an important part in increasing sugarcane production mainly because of their influence on cane tonnage.

Source of Information: J. Asiat. Soc. Bangladesh, Sci, 28(1): 133-136. June 2002

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Sugarcane yield and its components like tiller and millable cane stalk were significantly influenced due to different combinations of N, P, K and S nutrient levels in both the years. Partial budget analysis and marginal rate of return was computed and is presented, respectively. Gross benefit (Tk. 81,070 ha^-1) was highest in T₄ treatment and the variable cost of fertilizers (Tk. 10,108 ha^-1) was maximum in T₆ treatment. It is therefore, suggested that N₈₀ + P₃₀+ K₄₀ + S₂₀ kg ha^-1 (T₂) is the most suitable fertilizer doses for obtaining maximum benefit in sugarcane production under char land soils of Bangladesh.

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