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Impact of Organic Substance on Growth Attributes of Mat Type Rice Seedlings in the Trays for Machine Transplanting

A. B. M. Shahed
Department of Farm Power and Machinery, Faculty of Agricultural Engineering and Technology, Sylhet Agricultural University, Sylhet-3100, Bangladesh.

M. A. Hossen
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur- 1701, Bangladesh.

M. R. Al Mamun
Department of Farm Power and Machinery, Faculty of Agricultural Engineering and Technology, Sylhet Agricultural University, Sylhet-3100, Bangladesh.

T. A. Tamanna
Department of Farm Power and Machinery, Faculty of Agricultural Engineering and Technology, Sylhet Agricultural University, Sylhet-3100, Bangladesh.

M. Mizanur Rahman
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh.

Abstract/ Executive Summary:

Rice seedling for mechanical transplanting must fulfill the prerequisites of guideline seedling block with uniform density of seedlings and between bending pulls for rolling. The present study was carried out at the Farm Power and Machinery Department, Sylhet Agricultural University, Sylhet during Boro season/2018-19 with the objective to assess the impact of organic substance on agronomic attributes of mat type rice seedling. The seedling was raised on plastic rigid tray utilizing sandy clay loam (SCL) and sandy clay (SC) soil blending with the organic fertilizer of cow-dung (CD), rice bran (RB), rice husk (RH) and tea wastage (TW) at the rate of 0.0, 5, 10, 15 and 20%, respectively. Averaged across the rate of soil mixture, 5 to 15% of CD and RB with the both types of soil gave higher seedling height, leaf length and stem length while 20% of CD and TW also showed better result for number of leaves and stem thickness. Considering all parameters, 15 to 20% rice husk and tea wastage mixed with the sandy clay loam soil and 10 to 15% with the sandy loam soil gave good result. Be that as it may, seedling quality differed among the natural composts with the two kinds of soil more or less like CD > RB > TW > RH. Water requirement in the SC soil was more compared to SCL soil. It was observed that crack was formed on the sandy clay soil in tray. For both types of soil, the density of seeds in the mat at the rate of 6-7 seeds cm^-2 was found at 80% of soil mixture along with rice bran. The findings of the study could be promoted widely in farmer’s field to raise better quality of mat type seedling for better performance of the mechanical rice transplanter which ultimately leads to getting better rice yield

Keywords: Rice transplanter, Organic fertilizer, Agronomic characteristics, Organic mixture.

Location: Farm Power and Machinery Department, Sylhet Agricultural University, Sylhet

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To assess the impact of organic substance on agronomic attributes of mat type rice seedling.

Methodology:

The experiment have been executed in the Farm Power and Machinery Department, Sylhet Agricultural University, Sylhet during the Boro season 2018-19 and the latitude and longitude of the location is 24°54'33.9"N 91°54'05.2"E. Two-way factorial design with 3 replications was followed to conduct the study. Organic substance was used as factor A and percentage of soil mixture was used as factor B for both type of soil separately. Five different categories of organic substance (cow dung, rice bran, rice husk, tea wastage) and two types of soil (sandy clay loam and sandy clay) were mixed separately at different rate (100%, 95%, 90%, 85% and 80%) to identify the suitable mixing ratio of the organic fertilizer with the seedling bed soil as per the treatments. The temperature and humidity during the seedling growing period were collected from local weather station. Cow dung, rice bran, rice husk and tea wastage were mixed with sandy clay loam and sandy clay soil manually on a volume basis and filled up the seedling trays at a thickness of 20 mm which is about three fourth of the trays. Pre-germinated seeds (140 g per tray) were sown uniformly on the trays. Soil mixture was utilized as covering soil and spread over the seeds (3–4 mm thick) to cover the seeds. The agronomic characteristics of seedling height, number of leaves, leaf length, stem length and stem thickness were counted after 15 and 30 days of seeds spreading on the trays. The seedling density was measured after 30 days of sowing during and the seedling height, number of leaves, leaf length, stems length and stem thickness were measured by using slide calipers (mm). Nine plants from each replication were collected randomly from collar region of the plants to the tip at 15 and 30 days after seeds sowing and mean height was computed for analysis. Number of leaves also counted randomly from selected nine plants at 15 and 30 days after seeds sowing in the trays. Only the 1st leaf length was measured under this study. Similar plants were used to measure the leaf length at 15 and 30 days later of sowing. The bottom of the first leaf to stem was measured after 15 and 30 days of seeds sowing. Stem thickness was measured at 15 and 30 days after seeds sowing in the trays. A metal sheet box of 100×100 mm² size was used to determine the seeding density from each tray. Collected data of the study were analyzed as a 2-way factorial design (factor A x factor B) according to Gomez and Gomez (1984) using Statistix 10 program.

Source of Information: J. Sci. Technol. Environ. Inform. 10(01): 694-708; (2020)

Article Link (Online Journal): https://doi.org/10.18801/jstei.100120.70

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Quality mat type seedlings are the pre-requisite factor of successfully rice transplanter operation in the farmer’s field. In the present study, 5 to 15% of cow-dung and rice bran mixed with both sandy clay loam soil and sandy loam soil produce quality mat type rice seedling in terms of agronomic characteristics. In the contrary, 15 to 20% rice husk and tea wastage mixed with the sandy clay loam soil and 10 to 15% with the sandy loam soil gave good result. The findings of the study could be promoted widely in farmer’s field to raise better quality of mat type seedling for better performance of the mechanical rice transplanter which ultimately lead to get better rice yield.

Knowledge Management: Journal