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. Response of Potassium ( K ) Fertilizer on Yield of Wheat Varieties in Char Land Area

M Asaduzzaman
Wheat Research Centre, BARI

M A Khaleque
Wheat Research Centre, BARI

A H S Jahan
Wheat Research Centre, BARI

M A Alam
Wheat Research Centre, BARI

Abstract/ Executive Summary:

The experiment was conducted in split-plot design with 3 replications at farmer’s field at char land in Jamalpur during Rabi 2013-14 seasons. Potassium doses had significant effect on yield and yield contributing characters of wheat varieties/lines. The K dose 80 kg/ha with BARI Gom 25 followed by BARI Gom 26 was the best for wheat growing in char land area for higher production.

Keywords: Potassium, Char land, Wheat

Location: Jamalpur

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Wheat

Objectives:

The experiment was proposed to fulfill the following objectives: 1) to verify the present potassium recommendation for wheat varieties and 2) to find out the appropriate K recommendation under the changed biotic and abiotic environment to boost up wheat yield in char areas of Bangladesh.

Methodology:

The experiment consisted of four varieties viz. V₁=BARI Gom 25, V₂=BARI Gom 26, V₃=BARI Gom 27 and V₄=BARI Gom 28 and four K doses (K₃₅=35 kg, K₅₀=50 kg, K₆₅=65 kg and K₈₀=80 kg K/ha). The experiment was laid out in split-plot design with 3 replications. Varieties were assigned in the main plot and K doses were assigned in the sub plot. The unit plot sized was 5m x 4m. Other than potassium, fertilizers were applied as WRC recommended doses. Three irrigation were applied at CRI (Crown Root Initiation), booting and grain filling stage. Data were recorded on physiological, yield and yield contributing characters. Data were analyzed using MSTATC program. Initial (before planting) nutrient status of the soil was recorded.

Source of Information: Annual Research Report, Wheat Research Centre, BARI--2013-14

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The experiment was conducted in split-plot design with 3 replications at farmer’s field at char land in Jamalpur. Varieties had significant effect on several yield contributing characters of wheat. The maximum thousand grain weight (TGW) (45.5g) was recorded in BARI Gom 28 followed by BARI Gom 26. The lowest TGW (34.25g) was obtained from BARI Gom 27. In case of spikes/m² variety BARI Gom 27 gave the highest (439.2) results which were followed by BARI Gom 28. BARI Gom 26 recorded the lowest spikes/m²(361.9). The maximum grains/spike (47.58) was recorded in BARI Gom 27 and the remaining three varieties produced the similar grains/spike. Significant effect of K doses was observed on yield and yield contributing characters. The highest grain yield (4014 kg/ha) was obtained from K₈₀ kg/ha followed by K₅₀ kg/ha (3877 kg/ha). The TGW (43.25 g) was obtained from K₆₅ treatment followed by K₅₀treatment. The grain/spike and spikelet/spike were non-significant. The highest spike/m² (425.5) was recorded in K₈₀and the lowest (388.3) was recorded in K₃₅ treatment. Combined effect of K fertilizer doses and varieties had significant effect on all the yield contributing characters. The highest grain yield (4163 kg/ha) was recorded on BARI Gom 25 with K₈₀ dose which was followed by BARI Gom 26 with the same K dose. The lowest grain yield (3573 Kg/ha) was recorded in BARI Gom 27 with K35 dose.

Knowledge Management: Report/Proceedings