EFFECT OF SEED SIZE AND DEPTH OF PLANTING ON FIELD GERMINATION PERCENTAGE AND  IT’S RELATION TO MAIZE GRAIN YIELD  AND COMPONENTS OF MAIZE

Jallow, R.A.J.; Fissah, A.T.; Al-Beiruty, R.Z.; H. Shakir, S.

	EFFECT OF SEED SIZE AND DEPTH OF PLANTING ON FIELD GERMINATION PERCENTAGE AND IT’S RELATION TO MAIZE GRAIN YIELD AND COMPONENTS OF MAIZE
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 19, Issue 7, 2014, Pages 0-0
Authors
R.A.J. Jallow; A.T. Fissah; R.Z. Al-Beiruty; S. H. Shakir
Abstract
This project was carried out at Abu Ghraib Agricultural research station during autumn of 2006 and 2007. The soil texture was loamy clay. The maize cultivar was 5012. The aim of this investigation was to determine the optimum seed size and planting depth required to yield highest production. The main treatments included grain size (large, medium and small that would be seives by seires of 8.74, 6.75 and 4.77 mm respectively). While the secondary treatments included using 4 planting depth of 3, 6, 9 and 12cm. The investigation revealed that plant seeded from different seed sizes resulted significant differences for the following characters: germination rate, seed numbers per ear, weight of 1000 grains and yield for both seasons. The planting depth had a significemt effect on the following characters: germination rate, as the planting depth of 3, 6 and 9cm resulted higest germination rates as compared with plants seeded at 12cm depth and for both seasons. As for weight of 1000 grains, the plants yielded from planting at 3 and 6cm depth showed significant effect as far as this characters is concerned. The seed number per ear had also a signifcant impact far this charcterat 6 and 9cm depth, as well as on crop yield. The plants seeded at 6 and 9cm depth resulted highest yield for autumn, 2006. While for autum, 2007, the growing plants at 6cm depth resulted highest yield compared with plants grown at other depth. The obtained results showed a significant interaction between seed size and planting depth for the following characters: germiration rate, the best combination was between lerg and medium sized seeds and planting depth of 3, 6 and 9cm compared to 12cm depth for the forementioned seed size for both seasons. The small seed size showed significant inteferance for 3cm depth for both seasons. There were a significant interaetion between seeds size and planting depth for the characters of 1000 seeds. The 3, 6 and 9cm depths together with large and medium size seeds resulted significant differences compared to small size seeds for all planting depth for autumn 2006. Therefor, it is recomanded to use large and medium sized seeds and planting depths of 6 and 9cm.

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