2020 年 43 巻 p. 35-43
Crop Management especially planting time and spacing is very important factor for proper growth and development of crop resulting higher yield. To find out the optimum planting time and suitable spacing of pointed gourd production, the experiment was conducted at Regional Agricultural Research Station, Ishurdi, Pabna, Bangladesh. Three sowing time viz. (i) T1=15 October, (ii) T2=1 November and (iii) T3=16 November and three plant to plant spacing viz. (i) S1=1.50 m, (ii) S2=1.00 m and (iii) S3= 0.50 m were included in the experiment. However, days to seedling emergence, first female flower opening and fruit harvest was significantly varied in case of planting time but not for spacing. Spacing had significant effect on number of fruits per unit area. The maximum number of fruits per plot (375) produced by S3 treatment. On the other hand, wider spacing produced the highest single fruit weight (50.33 g). However, there was a significant difference among the planting time regarding yield. The highest yield (42.41 t/ha) was obtained from T1 treatment and the lowest yield (39.13 t/ha) from T3 treatment, respectively. In case of spacing, S2 treatment produced the highest yield (44.57 t/ha) and S3 produced the lowest yield (35.56 t/ha). Contrary, T1 with S2 treatment combination produced the highest yield (46.55 t/ha) and the lowest yield (30.40 t/ha) was recorded from T3 with S3 treatment combination. The results revealed that 15 October planting time with 1.0 m spacing is suitable combination for pointed gourd production in Bangladesh.