Factors affecting graniferous sorghum implantation: planting depth and cariopse size
The influence of seed weight, seeding depth and cultivar on grain sorghum establishment was tested in a factorial split-plot design. Seeds of three different size and weight from a hybrid and a non hybrid cultivar were planted at 2, 4, 6 and 8 cm seeding depth in order to assess the vigour of seedli...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Facultad de Ciencias Agropecuarias
1982
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/agris/article/view/904 |
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| Sumario: | The influence of seed weight, seeding depth and cultivar on grain sorghum establishment was tested in a factorial split-plot design. Seeds of three different size and weight from a hybrid and a non hybrid cultivar were planted at 2, 4, 6 and 8 cm seeding depth in order to assess the vigour of seedling in each particular case and the influence each one had upon establishment and be able to determine the best seeding depth and find out the results of seed size. Upon first and third full leaf expansion, the following were measured and assessed: total dry weight; dry weight of different components of seedling; leaf area; coleoptile length; mesocotile length and dry weight; percentage of emergence; relative growth rate (R.G.R.); net assimilation rate (N.A.R.); leaf area ratio (L.A.R.). Conclusions were: a) Greater seeds produce more uniform stands and more vigorous seedlings. b) Deeper seeding produce thinner and weaker stand of seedlings. c) Regard the length and dry net weight of mesocotile as indicators of the ability of emergence of grain sorghum. It is recommended to seed grain sorghum at a depth oscillating between 2 and 6 cm according to environments and to direct selection towards the obtention of larger kernels to ensure better establishment and higher yield. |
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