INTERCROPPING OF HYBRID MAIZE WITH SWEET POTATO IN THE COASTAL AREA OF KHULNA. Hossain MM, Zaman SM and Sardar PK

ABSTRACT

The experiment was conducted at Agricultural Research Station, Bangladesh Agricultural Research Institute, Daulatpur, Khulna during rabi season of 2007-08 and 2008-09. The objective of the study was to identify the suitable and profitable intercrop combination of maize with sweet potato in the coastal area. The experiment was laid out in a randomized complete block design (RCBD) with four replications. There were four treatments viz. T1: Sole maize, T2: Maize paired row + 2 rows sweet potato in between two paired rows, T3 : Maize normal row + 1 row sweet potato in between two maize rows and T4 : Sole sweet potato. Results showed that different intercropping combinations significantly influenced the yield of maize and sweet potato. The highest grain yield (8.99 t/ha) and root yield (28.75 t/ha) were recorded from sole maize and sole sweet potato respectively. But higher maize equivalent yield was obtained from T2 (12.30 t/ha). Higher LER was recorded from treatment T2 (1.27) followed by T3 (1.07) and lower LER from sole maize and sole sweet potato. Higher gross return (Tk. 184560/ha), net return (Tk. 138740/ha) and BCR (4.03) were obtained from T2 and lower gross return (Tk. 134850 /ha) net return (Tk. 93330/ha) and BCR (3.25) were obtained from T1.

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