| dc.description.abstract | The experiment was conducted at research field and laboratory in the Department of
Crop Physiology and Ecology, Hajee Mohammad Danesh Science and Technology
University, Dinajpur, during the period of November 2016 to March 2017 to study the
effects of naphthalene acetic acid on the yield attributes and yield of tomato varieties.
The experiment was laid out in a split plot design with three replications. The experiment
comprised of two sets of factors such as A: Four NAA levels like, C0= No NAA
application (control), C1= Spray with 10 ppm NAA, C2= Spray with 20 ppm NAA and
C3= Spray with 30 ppm NAA. B: three tomato varieties such as, V1= Manik, V2= Ratan
and V3= Provin. In the present study, naphthalene acetic acid was assigned as main plot
treatment and varieties for sub-plot treatment. Naphthalene acetic acid was given at three
stages namely root soaking before transplanting, vegetative and flowering stages.
Application of C3naphthalene acetic acid produced tallest plant, maximum number of
branches, leaves at all growth stages and C0 gave the reverse results in all tomato
varieties. Application of C3naphthalene acetic acid produced maximum number of days
to attain first flower initiation and fruit setting while C0 naphthalene acetic acid gave the
reverse results in all tomato varieties. Most of the yield contributing characteristics i.e;
number of fruit cluster plant-1
, number of fruit cluster-1
, number of fruit plant-1
, weight
tomato-1
, yield per plant, yield per plot and yield per hectare were increased with
increment of concentration of naphthalene acetic acid in all varieties compared to
control. Among the concentration levels in C3 (Spray with 30 ppm NAA) all the varieties
performed better performance and Ratan was the best when sprayed with 30 ppm NAA. | en_US |
