scholarly journals Promotion of Seedling Emergence of Paddy Rice from Flooded Soil by Coating Seed with Potassium Nitrate.

1991 ◽  
Vol 60 (3) ◽  
pp. 441-446 ◽  
Author(s):  
Motoyuki HAGIWARA ◽  
Mitsuo IMURA
Keyword(s):  
Seedling Emergence ◽  
Potassium Nitrate ◽  
Paddy Rice ◽  
Flooded Soil

scholarly journals Factors Affecting Seed Dormancy and Germination of Greater Bur-Parsley (Turgenia latifolia)

2018 ◽  
Vol 36 ◽  
Author(s):  
M. REZVANI ◽  
S.A. SADATIAN ◽  
H. NIKKHAHKOUCHAKSARAEI
Keyword(s):  
Seed Germination ◽  
Environmental Factors ◽  
Seed Dormancy ◽  
Seedling Emergence ◽  
Potassium Nitrate ◽  
Germination Percentage ◽  
Dormancy Breaking ◽  
Planting Depth ◽  
Factors Affecting ◽  
Drought And Salt Stresses

ABSTRACT: Our knowledge about seed dormancy breaking and environmental factors affecting seed germination of greater bur-parsley (Turgenia latifolia) is restricted. This study has addressed some seed dormancy breaking techniques, including different concentrations of gibberellic acid (GA3) and potassium nitrate (KNO3), leaching duration, physical scarification as well as some environmental factors effective on seed germination such as salt and drought stresses, pH and seed planting depth. Seed germination was promoted with lower concentrations of KNO3 (0.01 to 0.02 g L-1), while higher concentrations reduced germination percentage. Seed dormancy was declined by low concentrations of GA3 up to 100 ppm. Seeds of greater bur-parsley germinated in a range of pH from 3 to 7. With enhancement of drought and salt stresses, seed germination decreased. Also, there was no seed germination in a high level of stresses. Seedling emergence reduced as planting depth increased. Use of GA3, KNO3, leaching and physical scarification had a positive effect on seed dormancy breaking of greater bur-parsley. The information from the study increases our knowledge about seed dormancy breaking techniques, response of germination to drought and salt stresses and also determination of distribution regions of greater bur-parsley in the future.

Germination and Emergence of Spurred Anoda

Weed Science ◽  
1974 ◽  
Vol 22 (4) ◽  
pp. 353-354 ◽  
Author(s):  
Francisco Solano ◽  
J. W. Schrader ◽  
H. D. Coble
Keyword(s):  
Sulfuric Acid ◽  
Tap Water ◽  
Seedling Emergence ◽  
Potassium Nitrate ◽  
Planting Depth ◽  
Concentrated Sulfuric Acid ◽  
Anoda Cristata

Dormancy of spurred anoda [Anoda cristata (L.) Schlecht] seeds was not broken 60 days after harvest by stratification, presoaking in tap water, or by treatment with thiourea, potassium nitrate, or kinetin. Dormancy was broken by scarification or treatment with concentrated sulfuric acid. A high percentage of seedling emergence was obtained when scarified seeds were planted in soil at depths of 7.5 cm or less. Emergence decreased as planting depth increased. No seedlings emerged at depths of 12.5 cm or greater. Even at depths of 15.0 cm germination occurred, but no seedlings emerged.

Seed Priming: A Low Cost Input for Yield Maximization of Rainfed Chickpea

2021 ◽  
Author(s):  
M.D. Giri ◽  
C.P. Jaybhaye ◽  
D.G. Kanwade
Keyword(s):  
Adverse Effect ◽  
Low Cost ◽  
Seedling Emergence ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
Pooled Analysis ◽  
Plant Population ◽  
Research Station ◽  
Higher Plant ◽  
Yield Maximization

Background: Moisture availability is the major abiotic limitation in rainfed areas of the country. Reduced germination, weak seedlings and poor plant population are the major causes of low productivity of chickpea in rain fed area. Inadequate soil moisture has adverse effect on seedling emergence, germination, vegetative growth as well as reproductive growth and seed yield.Methods: The experiments were conducted at the Agriculture Research Station (Dr. PDKV), Buldana, Maharashtra, India during 2016-17 to 2019-20 (four years). The experiment consisted of 12 treatments of seed priming replicated three times in randomized block design.Result: Based on the results of four years pooled analysis it was observed that seed priming with 0.5 and 1.0% potassium nitrate resulted in higher plant population and recorded higher grain yield of chickpea crop. Seed priming with potassium nitrate for four hours resulted in the higher gross monetary returns, net monetary returns and B:C ratio.

Environmental factors affect seed germination and seedling emergence of invasive Centaurea balsamita

2017 ◽  
Vol 68 (6) ◽  
pp. 583 ◽  
Author(s):  
Iraj Nosratti ◽  
Samira Soltanabadi ◽  
Saeid J. Honarmand ◽  
Bhagirath S. Chauhan
Keyword(s):  
Seed Germination ◽  
Environmental Factors ◽  
Osmotic Potential ◽  
Seedling Emergence ◽  
Potassium Nitrate ◽  
Weed Species ◽  
Invasive Weed ◽  
Western Iran ◽  
Temperature Regimes ◽  
Wide Range

Centaurea balsamita is a problematic and invasive weed of agricultural fields in western Iran. This study was conducted to determine the effect of different environmental factors on germination and seedling emergence of this weed species. Results revealed that seed germination occurred over a wide range of temperatures (from 5°C to 35°C) with the highest germination at 25°C. Seed germination of C. balsamita was similar between light and dark conditions. Germination decreased with increased in water stress levels, but some seeds were capable of germinating at –1.4 MPa osmotic potential. Seed germination was sensitive to salt stress and complete inhibition occurred at 150 mM sodium chloride. Seed germination of C. balsamita occurred over a pH range of 4–10 with lowest seed germination at pH 4. Seed germination was inhibited by increasing concentrations of potassium nitrate. No seedlings emerged when seeds were buried in the soil at depths greater than 6 cm, suggesting that using a sweep cultivator in crops and deep tillage would be beneficial in managing C. balsamita. The ability of C. balsamita to germinate under a wide range of temperature regimes and high levels of osmotic potential shows that this weed is well adapted to invade other cropping regions, especially rain-fed fields in western Iran.

An experimental comparison of germination ecology and its implication for conservation of selected rare and endangered species of Dianthus (Caryophyllaceae)

Botany ◽  
2018 ◽  
Vol 96 (5) ◽  
pp. 319-328 ◽  
Author(s):  
Jeremi Kołodziejek ◽  
Jacek Patykowski ◽  
Mateusz Wala
Keyword(s):  
Germination Rate ◽  
Seedling Emergence ◽  
Storage Period ◽  
Soil Surface ◽  
Potassium Nitrate ◽  
Germination Percentage ◽  
Experimental Comparison ◽  
Cold Stratification ◽  
Sowing Depth ◽  
Rare And Endangered Species

The germination requirements of four taxonomically related taxa of Dianthus (D. arenarius L. subsp. borussicus Vierh., D. carthusianorum L., D. gratianopolitanus Vill., and D. deltoides L.) were studied under controlled conditions in a laboratory. A set of experiments were conducted to evaluate seed germination responses to storage period and cold stratification, different hydrogen ion concentrations (pH), potassium nitrate ([Formula: see text]), temperatures, and light conditions. Experiments were also performed to study the effects of sowing depth and water supply on seedling emergence. There were no differences in germination between seeds incubated under light or dark conditions for any of the taxa we studied. Germination percentages increased significantly with increases in temperature. The taxa of Dianthus we studied showed similar responses to sand burial, i.e., seeds placed on or near the soil surface had maximum emergence, and emergence declined with increasing depth of seed burial. In the studied taxa, germination was reduced by declining osmotic potentials. Cold stratification increased the germination rate, but did not affect final germination percentage of Dianthus seeds. A higher concentration of nutritious solutions (KNO3) negatively affected the germination percentage. The results show that seeds of the studied taxa are potentially germinable in the species’ habitat at any time between April and October.

scholarly journals Seed priming effects on germination and first growth of the medicinal plant Achillea millefolium L.

2020 ◽  
pp. 20-23
Author(s):  
Panagiotis Kanatas ◽  
Vyronas Dellaportas ◽  
Ioanna Kakabouki ◽  
Panayiota Papastylianou
Keyword(s):  
Control Experiment ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
Potential Effect ◽  
Germination Percentage ◽  
Priming Effects ◽  
Positive Effects ◽  
Germination And Growth

This study evaluated the effects of seed priming on germination and growth of A. millefolium by means of laboratory and greenhouse experiments conducted during 2018 in the Agricultural University of Athens. Treatments were GA3 (400 and 800 ppm), potassium nitrate (2% and 4%), polyethylene-glycol (soaking for 12 and 24h) besides an untreated control. Experiment in Petri dishes revealed that GA3 at 400 ppm, potassium nitrate (at concentration 2 and 4%) and PEG significantly increased germination percentage of A. millefolium, while germination rate was also significantly improved as a result of all seed priming techniques. In addition, due to the soil experiment, seedling emergence was significantly increased by GA3 at 400 ppm, potassium nitrate (at both concentrations) and PEG compared with the untreated seeds. Dry biomass of the young seedlings was significantly enhanced by means of GA3 (at 400 and 800 ppm), KNO3 (4%) and PEG for 24 h, indicating the potential effect of seed priming on first growth as well. The results of the present study revealed the significant positive effects of seed priming on A. millefolium seed germination, seedling emergence and early growth.

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