Effect of Different Harvesting and Threshing Methods on  Seed Quality of Rice Varieties

A field experiment was conducted at the Agronomy field of central research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from June 2014 to December 2014 to study the influence of nitrogen on growth and seed quality of T. Aman rice variety with interaction effects between nitrogen doses and T. Aman rice varieties. The experiment consisted of two factors such as nitrogen fertilizer and variety. these were as follows: Factor A: Nitrogenous fertilizer (6 levels) viz. N0- controlled, N1- 50% less than BRRI recommended dose, N2- 25% less than BRRI recommended dose, N3- BRRI Recommended dose, N4- 25% higher than BRRI recommended dose, N5- 50% higher than BRRI recommended dose and Factor B: T. Aman rice (3 varieties) viz. V1 – BRRI dhan44, V2 - BRRI dhan54, V3 - BRRI dhan56. The experiment was laid out in a split-plot design with three replications. Nitrogen was assigned to main plots and variety to sub-plots. In case of different levels of nitrogen, the treatment N4 (25% higher than BRRI recommended dose) showed good morphological growth and also produced good quality seed than other treatments which is also true for variety V1 (BRRI dhan44). The interaction of N4V1 (25% higher than recommended dose with BRRI dhan44) treatment is suitable for producing better plant growth and seed of T. Aman rice. The study was concluded that higher dose of urea than BRRI recommendation dose with BRRI dhan44 variety produced good quality seed.

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Storage and hydro-priming treatments to improve the seed quality of two traditional rice varieties; Batapola-el and Suwendal, from Sri Lanka

ORYZA- An International Journal on Rice ◽

10.35709/ory.2020.57.1.3 ◽

2020 ◽

Vol 57 (1) ◽

pp. 25-35

Author(s):

MO Galappaththi ◽

KMGG Jayasuriya ◽

NS Gama-Arachchige

Keyword(s):

Sri Lanka ◽

Seed Germination ◽

Seed Quality ◽

Seedling Emergence ◽

Seed Viability ◽

Rice Varieties ◽

Seed Vigour ◽

Sowing Season ◽

Traditional Rice

Although the demand for traditional rice varieties has increased, low initial germination and poor storability of these varieties impede its popularization. Thus, the aim of the study was to improve the seed quality using priming treatments and to suggest an effective storage practice of two of the traditional rice varieties; Suwendal and Batapola-el, in Sri Lanka. Seeds were subjected to hydro-priming under various time periods (0, 24, 48 and 72 hours). Seeds were stored in gunny, polysac and polythene bags at room temperature, 25 and 8 °C. Seed quality of primed and stored seeds was evaluated using seed germination, seed vigour (seedling growth and conductivity) and seedling emergence. Hydro-priming for 72 hours has increased the seed germination of the two varieties significantly compared to other priming methods. Further, seeds primed for 72 hours had the highest vigour and highest seedling emergence in both varieties. Storing Suwendal and Batapola-el seeds in polythene bags at 8 °C retained the highest viability and highest vigour for more than six months. Thus, hydro-priming for 72 hours could be recommended to enhancethe seed quality of these two tested varieties and storage at 8 °C in sealed polythene bags could be recommended as an effective storage practice to maintain the seed viability till the next sowing season.

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Effect of Different Harvesting and Threshing Methods on harvest Losses and Seed Quality of Rice Varieties

International Journal of Current Microbiology and Applied Sciences ◽

10.20546/ijcmas.2017.609.184 ◽

2017 ◽

Vol 6 (8) ◽

pp. 1510-1520

Author(s):

M. Govindaraj ◽

P. Masilamani ◽

D. Asokan ◽

P. Rajkumar ◽

P. Selvaraju

Keyword(s):

Seed Quality ◽

Rice Varieties

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Yield and Seed quality of barley (Hordeum vulgare L.) as affected by variety, nitrogen level and harvesting time

JOURNAL OF ADVANCES IN AGRICULTURE ◽

10.24297/jaa.v2i2.4250 ◽

2014 ◽

Vol 2 (2) ◽

pp. 93-100

Author(s):

Shahnaj Yesmina ◽

Moushumi Akhtarb ◽

Belal Hossain

Keyword(s):

Grain Yield ◽

Seed Weight ◽

Seed Quality ◽

Quality Parameters ◽

Nitrogen Level ◽

Yield Attributes ◽

Harvesting Time ◽

Nitrogen Levels ◽

Vigour Index

The experiment was conducted to find out the effect of variety, nitrogen level and harvesting time on yield and seed quality of barley. The treatments used in the experiment consisted of two varieties viz. BARI Barley 4 and BARI Barley 5, three harvesting time viz. 35, 40 and 45 Days after Anthesis (DAA) and nitrogen levels viz. 0, 70, 85 and 100 kg N ha-1 . The experiment was laid out in a spilt- spilt-plot design with three replications assigning the variety to the main plot, harvesting time to the sub-plots and nitrogen level to the sub-sub plots. Variety had significant effects on the all yield attributes except fertile seeds spike-1 . Seed quality parameters viz. normal seeds spike-1 , deformed seeds spike-1 , germination (%) and vigour index were statistically significant. The variety BARI Barley 5 produced higher grain yield and seed quality than BARI Barley 4. Grain yield from BARI Barley 5 and BARI Barley 4 were 4.59 t ha-1 and 4.24 t ha-1 , respectively. Significantly, the highest 1000-seed weight (46.90 g) was produced by BARI Barley 5 than (37.90 g) BARI Barley 4. The result revealed that harvesting time had significant effect on yield and yield attributes and seed quality parameters. Seed yield was highest (4.65 t ha-1 ) when the crop harvested at 40 DAA and it was increased linearly from 35 DAA. Maximum quality seed and 1000-seed weight (43.20 g) was obtained when the crop harvested at 40 DAA. All the yields, yield attributes and seed quality parameters were significantly influenced by nitrogen levels. The highest grain yield (5.14 t ha-1 ) was obtained when BARI Barley 5 variety was fertilized by 100 kg N ha-1 and the lowest (3.14 t ha-1 ) was obtained from control treatments. Normal seeds spike-1 , vigour index, germination (%) were better at 85 kg N ha-1 in variety of BARI Barley 5 than BARI Barley 4. So it can be concluded that BARI Barley 5 showed better result when fertilized with 100 kg N ha-1 and harvested at 40 DAA for getting maximum yield and 85 kg N ha-1 and harvested at 40 DAA for getting better quality seed.

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Influence of Environment on Seed Quality of Four Cotton Cultivars 1

Crop Science ◽

10.2135/cropsci1976.0011183x001600030023x ◽

1976 ◽

Vol 16 (3) ◽

pp. 407-409 ◽

Cited By ~ 18

Author(s):

John H. Turner ◽

H. H. Ramey ◽

Smith Worley

Keyword(s):

Seed Quality

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Impact of seed film coating polymers on growth, yield and seed quality of rice (Oryza sativa L.)

Journal of Crop and Weed ◽

10.22271/09746315.2020.v16.i2.1323 ◽

2020 ◽

Vol 16 (2) ◽

pp. 113-116

Author(s):

A. DUTTA ◽

P. K. BHATTACHARYA

Keyword(s):

Oryza Sativa ◽

Seed Quality ◽

Growth Yield ◽

Film Coating

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Effects of introduction of combine harvester and flatbed dryer on milling quality of three glutinous rice varieties in Lao PDR

Plant Production Science ◽

10.1080/1343943x.2018.1532303 ◽

2018 ◽

Vol 22 (1) ◽

pp. 77-87 ◽

Cited By ~ 4

Author(s):

Khamtay Vongxayya ◽

Darunee Jothityangkoon ◽

Danuphol Ketthaisong ◽

Jaquie Mitchell ◽

Phetmanyseng Xangsayyasane ◽

...

Keyword(s):

Lao Pdr ◽

Rice Varieties ◽

Milling Quality ◽

Glutinous Rice ◽

Combine Harvester

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Using Regulatory Flexibility to Address Market Informality in Seed Systems: A Global Study

Agronomy ◽

10.3390/agronomy11020377 ◽

2021 ◽

Vol 11 (2) ◽

pp. 377

Author(s):

Katrin Kuhlmann ◽

Bhramar Dey

Keyword(s):

Seed Quality ◽

Regulatory Environment ◽

Control Mechanisms ◽

Seed Systems ◽

High Quality ◽

Design And Implementation ◽

Key Dimensions ◽

Regulatory Flexibility

Seed rules and regulations determine who can produce and sell seeds, which varieties will be available in the market, the quality of seed for sale, and where seed can be bought and sold. The legal and regulatory environment for seed impacts all stakeholders, including those in the informal sector, through shaping who can participate in the market and the quality and diversity of seed available. This paper addresses a gap in the current literature regarding the role of law and regulation in linking the informal and formal seed sectors and creating more inclusive and better governed seed systems. Drawing upon insights from the literature, global case studies, key expert consultations, and a methodology on the design and implementation of law and regulation, we present a framework that evaluates how regulatory flexibility can be built into seed systems to address farmers’ needs and engage stakeholders of all sizes. Our study focuses on two key dimensions: extending market frontiers and liberalizing seed quality control mechanisms. We find that flexible regulatory approaches and practices play a central role in building bridges between formal and informal seed systems, guaranteeing quality seed in the market, and encouraging market entry for high-quality traditional and farmer-preferred varieties.

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Comparison of Morphological and Physicochemical Properties of a Floury Rice Variety upon Pre-Harvest Sprouting

Foods ◽

10.3390/foods10040746 ◽

2021 ◽

Vol 10 (4) ◽

pp. 746

Author(s):

Chae-Min Han ◽

Jong-Hee Shin ◽

Jung-Bae Kwon ◽

Jong-Soo Kim ◽

Jong-Gun Won ◽

...

Keyword(s):

Physicochemical Properties ◽

Rice Variety ◽

Wheat Variety ◽

Economic Loss ◽

Rice Grain ◽

Starch Granules ◽

Rice Varieties ◽

Starch Structure ◽

Gelatinization Properties

Pre-harvest sprouting (PHS) severely reduces rice grain yield, significantly affects grain quality, and leads to substantial economic loss. In this study, we aimed to characterize the physicochemical properties and processing quality of the Garumi 2 flour rice variety under PHS conditions and compare them with those of the Seolgaeng, Hangaru, Shingil, and Ilpum rice varieties and the Keumkang wheat variety. Analysis of the molecular structure of starch revealed uniform starch granules, increased proportions of short-chain amylopectin in DP 6–12 (51.0–55.3%), and enhanced crystallinity (30.7–35.7%) in rice varieties for flour compared with the Ilpum cooking rice variety. PHS significantly altered the starch structure and gelatinization properties of Garumi 2. It also caused surface pitting and roughness in Garumi 2 starch granules and decreased their crystallinity. Collectively, the findings of this study provide important novel insights into the effects of PHS on the physicochemical properties of Garumi 2 floury rice for flour.

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