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Response of Chilli (capsium Annuum L.) to Zinc and Boron Application

N. C. SHIL
Principal Scicentific Officer
Soil Science Division, Bangladesh Agricultural Research Institute (BARI), Gazipur

H. M. NASER
Senior Scientific Officer
Spice Research Center, BARI, Bogra

S. BRAHMA
Senior Scientific Officer
Spice Research Center, BARI, Bogra

M. N. YOUSUF
Principal Scientific Officer
Spice Research Sub-Center, Bogra

M. H. RASHID
Senior Scientific Officer, Spice Research Center, BARI, Bogra

Abstract/ Executive Summary:

Field trial on chilli (cv. Bogra local) was conducted in Grey Terrace Soil under AEZ-25 (Level Barind Tract) at Spice Research Centre, Bogra during rabi seasons of 2005-2006, 2006-2007 and 2007-2008. The objectives were to evaluate the response of chilli to zinc and boron and to find out the optimum dose of zinc and boron for maximizing the yield. Treatments for this study comprised of four levels each of zinc (0, 1.5, 3.0, and 4.5 kg/ha) and boron (0, 1.0, 2.0, and 3.0 kg/ha) along with a blanket dose of N130 P60 K80 S20 Mg10 kg/ha. The experiment was set up in a randomized block design (factorial) with 3 replications. The integrated use of zinc and boron was found superior to their single applications. The interaction effect between zinc and boron was significant in case of yield of dry chilli and weight of ripe chilli/plant. The highest yield (1138 kg/ha) was recorded from Zn3B1 kg/ha, which was closely followed by Zn3B2, Zn4.5B2 and the lowest (703 kg/ha) in control (Zn0B0). The yield benefit over control varied from 4.4 to 61.9 % due to interaction effect. Consecutive three years studies showed almost similar trend of results. However, from regression analysis, the optimum-economic dose of zinc was found to be 3.91 kg/ha whereas it was 1.70 for boron. Hence, a package of (Zn3.91 B1.70 kg/ha) along with the said blanket dose may be recommended for maximizing the yield of chilli in the study area.

Keywords: Chilli, Zinc, Boron, Optimum yield.

Location: Spices Research Centre, Bogra

Start Date: 00-00-2005

End Date: 00-00-2008

Program Area: Crop-Soil-Water Management

Commodity: Chilli

Objectives:

(i) To evaluate the response of zinc and boron on chilli.

(ii) To find out the optimum dose of zinc and boron for maximizing the yield of chilli.

Methodology:

The experiment was conducted in Grey Terrace Soil under AEZ-25 (Level Barind Tract) at Spices Research Centre (SRC), Bogra during rabi seasons of 2005-2006, 2006-2007 and 2007-2008. The soil was slightly acidic (pH 6.2) having low organic matter content (1.12 %). The content of total-N was very low. The exchangeable K and Mg contents were low. Available P and S contents were also low. In particular, the contents of available Zn and B were low too. There were 16 treatment combinations comprising 4 levels each of boron (0, 1, 2 and 3 kg/ha) and zinc (0, 1.5, 3.0 and 4.5 kg/ha). Besides, a blanket dose of N130 P60 K80 S20 Mg10 kg/ha was used in the study. The treatments were arranged in a randomized block design (factorial) with 3 replications. The size of the unit plot was 3 m x 2.4 m. All fertilizers except N were applied at the time of final land preparation. Nitrogen was top dressed in 4 equal splits at 5, 30, 55 and 75 days after planting followed by light irrigation. Zinc and boron were applied as zinc sulphate and boric acid, respectively. About one month old seedlings of chilli (cv. Bogra local) were transplanted on the last week of December maintaining a spacing of row to row 40 cm and plant to plant 30 cm. Intercultural operations and plant protection measures were done to keep the plant healthy. Ripe fruits of chilli were harvested and sun dried during May. Crop performance data on plant height, fruit length, fruit breadth and yield were recorded and statistically analyzed using MSTATC Package.

Source of Information: Bangladesh J. Agril. Res. 38(1): 49-59, March 2013, ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Zinc @ 3.0 kg/ha and boron @ 1.0 kg/ha along with a blanket dose of N₁₃₀P₆₀K₈₀S₂₀Mg₁₀ kg/ha appeared as the best-suited combination. From the quadratic response function, the optimum-economic dose of boron and zinc were calculated to be 1.70 and 3.91 kg/ha, respectively. Thus a package of (B1.70 Zn3.91 kg/ha) along with the said blanket dose may be recommended for the cultivation of chilli in Grey Terrace Soil under AEZ-25.

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