7-2-4 Ullah et al


Md. Jafar Ullah*, Md. Mahirul Islam, Kaniz Fatima, Md. Sohel Mahmud and Jamilur Rahman
*Corresponding author, E-mail:jafarullahsau@gmail.com

A study was carried out at Sher-e-Bangla Agricultural University farm to evaluate the performance of seedling transplantation of four white maize hybrids (Changnuo-1, Q-Xiannuo-1, Changnuo-6 and Yangnuo-7) under two planting geometries (D1 =Row to row spacing 75 cm and plant to plant spacing within each row 25 and D2 = Row to row spacing 60 cm and plant to plant spacing within each row 25). D1 had 55 whereas D2 had 66.666 thousands plants per hectare. Results showed that varieties differed significantly in days to maturity showing the earliest (108 days) with the Yangnuo-7. Other varieties matured in between 135-137 days. Number of grains cob-1 was the highest with Changnuo-6 (419) whereas, the least with Yangnuo-7 (276). Yangnuo-7 had the lowest 100-seed weight (24.33 g, other varieties showed 31.83-34.67 g). Significantly the highest seed yield per hectare was observed with Changnuo-6 (8.198 tons) followed by Changnuo-1 (7.457 tons) and Q-Xinagnuo-1 (6.718 tons). Yangnuo-7 showed the lowest seed yield (4.393 tons) than others. Planting configuration D2 had significantly greater yield (7.551 t/ha) than that of D2 (5.832 t ha-1). The greater seed yield of D2 was attributed to the significantly higher grain number per cob of D2 (369.78) than D1 (337.29). Interaction effect of the variety with the planting configuration showed that the varieties Changnuo-6 and Changnuo-1 when transplanted at higher population densities (D2) showed identical seed yields (9.253 and 7.938 t/ha, respectively), but were significantly higher than others. Seedling leaf area had positive effects on grain number cob-1 and seed yield ha-1.

Key words: Seedling transplantation, maize, spacing, planting configuration and yield.

Full volume: 7(2)

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