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Effects of Rice Husk Ash and Previous Crop Straw on the Performance of Lentil in Rice-based Cropping System

M. A. Islam
Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

R. Alam
Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

M. O. Ali
Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

M. A. Salam
Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

J. Hossain
Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

R. U. Choudhury
Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

Abstract/ Executive Summary:

A feasibility study is made to use Rice Husk Ash (RHA) as an admixture and previous crop straw as mulch (SM), and an attempt has been made to investigate the effects of RHA and RS on yield and yield components of lentil in rice-based cropping system. This field experiment started with lentil at Pulses Research Centre (PRC) during the rabi season of 2018-19. The other crops in the rotation were Mung bean and T.aman rice. In this report, only the results of lentil are presenting. There were seven treatments in the present experiment comprising Rice Husk Ash (RHA), Recommended Fertilizer Dose (RFD), SM and control. The addition of SM increased crop yield over other treatments and control. The tallest plant height, higher branches and pods likely contributed to increased grain and straw yield of lentil in SM treatment. However, there were no effects of RHA as an admixture with top soil on the performance of lentil. This experiment will run over the next year for drawing a concrete conclusion.

Keywords: Crop Straw, Lentil, Yield, Rice husk ash

Location: Pulses Research Centre and Regional Agricultural Research Station, Ishurdi, Pabna

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Farming System

Commodity: Lentil, Fertilizer

Objectives:

To investigate the effects of RHA and straw mulch on yield and yield components of lentil.

Methodology:

A field experiment was conducted in Pulses Research Centre and Regional Agricultural Research Station, Ishurdi, Pabna. Experimental field was a medium high land under the AEZ 11, High Ganges River Flood Plain. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications, each plot being 4m × 5m. The experiment started with lentil in the cool dry season in November in 2018, followed by mung bean sown in the pre-monsoon season (March-June) then rice will be established in the monsoon season (July- October). This rotation will be continuing over the next three years. In this report, only the data of lentil crop are presenting in the rotation. The lentil crop (variety: BARI Masur-8) was sown on 26 November in 2018 and harvested at fully mature stage on 16 March, 2019. Fertilizers such as N, P, K, S, B and Zn were applied in the form of Urea, TSP, MOP, Gypsum, Boric acid and Zinc sulphate @ 40, 90, 40, 60,7 and 2 kg/ha during the final land preparation. Before sowing, rows of lentil were made with tyne maintaining 30 cm row to row distance. The seed rate at 30 kg/ha was used in rows of each plot and the rows were covered with soil using foot immediately after sowing. A light irrigation was given just after sowing to ensure germination. Provex @ 3 g/L water were applied on 9 and 17 January, 2019 at seedling stage to control foot rot disease. Combination of Rovral 50 wp @ 1 mL/L and Folicur EW 250 @ 2 g/L were applied on 6 February, 2018 and later only Folicur 2 mL/L were applied on 14 February, 2018 to control stemphylium blight disease of lentil. An insecticide, Imitaf 2.5 mL/L water also applied on 13 February, 2019 to control Aphids. One hand weeding was done at 30 days after sowing. However, there were total seven treatments to study the effects on yield and yield contributing characters of lentil were compared to control. Five plants from each plot were selected for collecting yield contributing characters of lentil. The crop yield in each plot was determined by harvesting the crops from two randomly selected quadrats of 1 m² area. Data were analyzed statistically using R software. The means differences among the treatments were compared by least significance difference test (LSD) at 0.05 levels.

Source of Information: Annual Research Report-2018-2019, Pulses Research Centre, BARI, Ishurdi, Pabna, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Application of previous crop straw as mulch plus recommended dose of fertilizer increased plant height, branches/plant, pods/plant and eventually increased grain and straw yield of lentil as compared to Rice Husk Ash plus recommended dose of fertilizer and untreated control. Higher soil moisture and nutrient conservation in previous crop straw as mulch treated plot likely be associated with improved the crop growth and yield of lentil (dry land crop) in rice-based cropping system at Ishurdi. However, this study will be continuing over the next years for final conclusion.

Knowledge Management: Report/Proceedings