scholarly journals Improvement of Seedling Establishment by using Root-elongated Seeds without Coating in Rice Direct-Seeded with a Puddling Seeder

2018 ◽  
Vol 87 (2) ◽  
pp. 140-146
Author(s):  
Keiko Ito ◽  
Hiroyuki Shiratsuchi ◽  
Youichi Ohdaira ◽  
Yoshiaki Kawana
Keyword(s):  
Seedling Establishment ◽  
Direct Seeded

scholarly journals Effect of Trichoderma and fungicide on seedling establishment and yield performance of dry direct seeded boro rice

2016 ◽  
Vol 14 (1) ◽  
pp. 37-42
Author(s):  
MM Hassan ◽  
S Hossain ◽  
MM Rahman ◽  
S Mahmud
Keyword(s):  
Seedling Establishment ◽  
Seed Treatment ◽  
Block Design ◽  
Seedling Mortality ◽  
Yield Performance ◽  
Major Barrier ◽  
Randomized Complete Block Design ◽  
Direct Seeded ◽  
And Control ◽  
Boro Rice

Poor seedling establishment and seedling mortality is the major barrier to optimum stand establishment in dry direct seeded boro rice. Experiments were carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh during January to June 2013 to study the effect of Trichoderma and fungicide application on seedling establishment and yield performance of dry direct seeded Boro rice. The experiment comprised ten treatment combinations of Trichoderma and fungicides viz. seed treatment with Trichoderma (M1), seed treatment with Trichoderma+spraying of Thiovit (M2), seed treatment with Trichoderma + spraying of Propiconazole (M3), seed treatment with Trichoderma + spraying of Thiovit and Propiconazole (M4), spraying of Thiovit (M5), spraying of Propiconazole (M6), seed treatment with Thiovit + spraying of Propiconazole (M7), seed treatment with Propiconazole + spraying of Thiovit (M8), spraying of mixture of Thiovit and Propiconazole (M9), and control (no fungicide or Trichoderma ) (M10).The experiments used Randomized Complete Block Design (RCBD) with three replications. Experiment revealed that seed treatment with Trichoderma harzianum followed by spraying of Thiovit gave the highest yield of rice. The study concludes that Trichoderma and then application of sulphur fungicide at 20 days after sowing could be practiced for ensuring high seedling establishment and yield of rice under dry direct seeded system in boro season.J. Bangladesh Agril. Univ. 14(1): 37-42, June 2016

Emergence and Establishment of Shortleaf Pine Seeds Under Various Seedbed Conditions

1993 ◽  
Vol 17 (1) ◽  
pp. 44-48
Author(s):  
J. A. Boggs ◽  
R. F. Wittwer
Keyword(s):  
Seedling Establishment ◽  
Growing Season ◽  
Site Preparation ◽  
First Year ◽  
Seedling Height ◽  
Pinus Echinata ◽  
Shortleaf Pine ◽  
Mountain Site ◽  
Ouachita Mountain ◽  
Direct Seeded

Abstract Emergence of direct-seeded shortleaf pine (Pinus echinata Mill.) seeds and seedling establishment varied with time of seeding and seedbed conditions resulting from various burning intensities following fell-burn site preparation on a Ouachita Mountain site in southeastern Oklahoma. One-third of the site was classified as unburned, 42% in a medium-burn class, and 25% was subjected to a hot burn. Approximately three times more seedlings emerged on areas receiving a hot burn than on unburned seedbeds. Sowing in January with unstratified seed resulted in greater seedlingemergence than a March sowing with stratified seed (3.4 vs. 2.0%). Stocking ranged from 60% on winter sown, hot-burned plots to 3% on spring-sown, unburned plots at the end of the first year. Total seedling height averaged approximately 10 cm (4 in.) at the end of the first growing season. Concentrations of pine slash appeared to burn with the greatest intensity providing the most favorable seedbed conditions and a system which distributes slash more evenly over the site prior to burning could be beneficial in attaining more uniform regeneration. South. J. Appl. For. 17(1):44-48.

scholarly journals Seedling Establishment of Direct-seeded Guayule

1990 ◽  
Vol 115 (2) ◽  
pp. 234-240
Author(s):  
J.D. Mihail ◽  
S.M. Alcorn
Keyword(s):  
Seedling Establishment ◽  
Seedling Emergence ◽  
Field Studies ◽  
Combined Effects ◽  
Parthenium Argentatum ◽  
Term Survival ◽  
Climatic Extremes ◽  
Direct Seeded ◽  
Seedling Pathogens

The establishment of stands from directly sown seed may be a way to reduce the current high costs associated with guayule (Parthenium argentatum Gray) cultivation. These field studies were conducted to examine the combined effects of shade and fungicides on the survival of guayule seedlings established from directly sown seed. Soil in the experimental plot was a loam of pH 7.25. The following fungicides: a) Terraclor Super X, b) Ridomil 5G, c) Ridomil PC llG, d) Tilt 3.6E, e) Terracoat, and f) Vitavax + PCNB were tested alone and in combination with the nonwoven polyester shadecloth, Reemay, to identify treatments enhancing seed germination and seedling establishment. In all cases, seedling emergence in microplots covered with Reemay was significantly higher than in noncovered microplots. Terraclor Super X, Ridomil 5G, and Ridomil PC 1 lG were effective only when used in combination with the shadecloth. The long-term survival of guayule seedlings was strongly affected by severe climatic events. Since Reemay-protected seedlings were larger and more robust, they were more likely to survive the climatic extremes than unprotected seedlings. Two new guayule seedling pathogens were recorded -pythium dissotocum Drechsler and P. paroecandrum Drechsler. Chemical names used: 5-ethoxy-3-(trichloromethyl)-1,2,4-thiadiazole (Terrazole) + pen. tachloronitrobenzene (PCNB); N-(2,6-dimethylphenyl)-N-(methoxyacetyl)-alamine methyl ester Ridomil + PCNB; 7. bromo-5-chloro-quinolin-8-yl-acrylate; Terrazole 5,6-dihydro-2-methyl-l,4 -oxathiin-3-carboxanilide + PCNB.

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