A study was conducted at Rampur, Chitwan, during Oct. 2001 to April 2002 to assess the
effect of de-topping an4 age of seedling transplant on seed yield and its quality of "Fourty
Days "radish. A factorial RCBD with 2 levels of de-topping (de-topping and no de-topping)
and 5 levels of age of seedling transplant (i.e. 0, 30, 40, 50 and 60 days after seed sowing)
was adopted with 3 replications. The difference observed in seed yield due to treatments
imposed was not statistically significant. However, no de-topping gave higher average seed
yield (5.15 q/h) than de-topping (4.77 q/h). Highest average seed yield (6.52 qlh) was given
by a combination of no-detopping plus 50 days old transplant (DOT) followed by a
combination of de-topping plus 40 DOT (5.73 qlh) and lowest (3.83 q!h) by de-topping plus
direct seed sowing. With the increase in transplant age, decreased seed germination percent
was observed in no-detopping where as it increased in de-topping. Highest 1000 seed weight
( 14.5 g) was given by no-de-topping plus 60 DOT. Similarly, positive effect of de-topping on
1000 seed weight ( 14.079 g) was obtained through de-topping plus 50 DOT. Results indicate
that roots transplanted 40 to 60 days after seed sowing gave higher seed yield and higher
quality with no-detopping. Thus, adopting no-detopping along with root transplanting at 40 to
60 days after seed sowing could be suitable practice for producing higher yield and better
quality of seed of "Fourty Day" radish in Chitwan condition. Additional research is
suggested as the results are based on one-year stlldy only.

A study was conducted at Rampur, Chitwan, during Oct. 2001 to April 2002 to assess the
effect of de-topping an4 age of seedling transplant on seed yield and its quality of "Fourty
Days "radish. A factorial RCBD with 2 levels of de-topping (de-topping and no de-topping)
and 5 levels of age of seedling transplant (i.e. 0, 30, 40, 50 and 60 days after seed sowing)
was adopted with 3 replications. The difference observed in seed yield due to treatments
imposed was not statistically significant. However, no de-topping gave higher average seed
yield (5.15 q/h) than de-topping (4.77 q/h). Highest average seed yield (6.52 qlh) was given
by a combination of no-detopping plus 50 days old transplant (DOT) followed by a
combination of de-topping plus 40 DOT (5.73 qlh) and lowest (3.83 q!h) by de-topping plus
direct seed sowing. With the increase in transplant age, decreased seed germination percent
was observed in no-detopping where as it increased in de-topping. Highest 1000 seed weight
( 14.5 g) was given by no-de-topping plus 60 DOT. Similarly, positive effect of de-topping on
1000 seed weight ( 14.079 g) was obtained through de-topping plus 50 DOT. Results indicate
that roots transplanted 40 to 60 days after seed sowing gave higher seed yield and higher
quality with no-detopping. Thus, adopting no-detopping along with root transplanting at 40 to
60 days after seed sowing could be suitable practice for producing higher yield and better
quality of seed of "Fourty Day" radish in Chitwan condition. Additional research is
suggested as the results are based on one-year stlldy only.