scholarly journals Improvement of Seedling Establishment by Seed Coating with Iron in Early-winter Direct-sowing Rice

2019 ◽  
Vol 88 (4) ◽  
pp. 259-267
Author(s):  
Satoko Oikawa ◽  
Masayoshi Nishi ◽  
Susumu Yui ◽  
Junichi Kashiwagi ◽  
Taiken Nakashima ◽  
...  
Keyword(s):  
Seedling Establishment ◽  
Seed Coating ◽  
Early Winter ◽  
Direct Sowing

scholarly journals Osmotic treatment, growth regulator and rooter in Tabebuia roseoalba (RIDL.) Sandwith seeds for direct sowing

2020 ◽  
Vol 42 ◽  
Author(s):  
Alexandre Carneiro da Silva ◽  
Maiara Pilar Palmeira da Silva ◽  
Rayssa Zamith ◽  
Gustavo Galetti ◽  
Fatima Conceição Márquez Piña-Rodrigues
Keyword(s):  
Seedling Establishment ◽  
Forest Restoration ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Direct Seeding ◽  
Germination Test ◽  
Toxicity Effect ◽  
Induced Stress ◽  
Osmotic Treatment ◽  
Direct Sowing

Abstract: Direct seeding is a technology that reduces the costs of forest restoration projects and favors species which are difficult to establish for seedlings. The seeds osmotic treatment to accelerate and standardize germination and induce tolerance to environmental stresses may favor seedling establishment in field through direct sowing and contribute to the greater efficiency of this technique. With the purpose of favor seed germination and seedling establishment under direct seeding conditions in the field, Tabebuia roseoalba osmoprimed seeds in polyethylene glycol (PEG) solution and unconditioned seeds were treated with isolated and/or combined solutions of plant growth regulators (PGR) and rooting (RTG). These seeds were submitted to germination test and evaluated for percentage germination rate, germination speed index and normal seedlings, and to seedling emergence test by direct field seeding. RTG had a toxic effect on T. roseoalba seeds. Osmoconditioning induced stress tolerance by RTG during germination and on seedling establishment. PGR treatment favors seedling emergence in field conditions and alleviates the toxicity effect caused by RTG. These treatments have great potential for use in direct sowing of T. roseoalba seeds.

scholarly journals PHOSPHORUS COATING ON PEARL MILLET SEED IN LOW P ALFISOL IMPROVES PLANT ESTABLISHMENT AND INCREASES STOVER MORE THAN SEED YIELD

2010 ◽  
Vol 46 (4) ◽  
pp. 457-469 ◽  
Author(s):  
P. V. KARANAM ◽  
V. VADEZ
Keyword(s):  
Pearl Millet ◽  
Seedling Establishment ◽  
Genotypic Variation ◽  
Seed Priming ◽  
Shoot Biomass ◽  
Seed Coating ◽  
Early Effect ◽  
P Deficiency ◽  
Soil P ◽  
Stover Yield

SUMMARYPhosphorus (P) is one of the main limiting nutrients in the semi-arid regions where pearl millet is grown; its deficiency leads to poor seedling establishment and eventually poor crop yield. Experiments were carried out in pots and field-like conditions to evaluate the effect of seed priming and seed coating with P on the shoot biomass at two and four weeks after sowing (WAS), and on the panicle and stover yield at maturity of three hybrid varieties of pearl millet in low P Alfisol. Overall, seed priming did not increase shoot biomass at two and four WAS. In pots, seed coating at a rate of approximately 400 g P ha−1 increased vegetative biomass over 400% at early stages, and panicle yield by about 50%, over the non-coated treatment, with genotypic variation in the magnitude of the response. In field-like conditions, seed coating restored stover biomass to 85–100% of that in the non-limiting P treatment, whereas the panicle yield remained 25–35% lower than in the non-limiting P treatment, but still 45–65% higher than the non-coated treatment. P deficiency delayed the time to flowering by 20–24 days compared to the non-limiting P treatment, but plants in the seed coating treatment reduced that gap by 10–14 days. Seed P coating treatment appears a valid option to promote pearl millet seedling establishment and then to boost yield under low soil P conditions. The maintenance of an effect of seed coating on panicle yield in pots suggests a positive early effect on developmental processes before panicle initiation.

scholarly journals Improvement of Seedling Establishment of Rice Directly Sown in Early Winter by Chemical Treatment of Seeds and Use of Seeds in the Year of Harvest

2021 ◽  
Vol 90 (1) ◽  
pp. 1-9
Author(s):  
Satoko Oikawa ◽  
Kensaku Suzuki ◽  
Masayoshi Nishi ◽  
Susumu Yui ◽  
Maya Matsunami ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Seedling Establishment ◽  
Early Winter
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