Abstract:
A field experiment to study
the effect of tillage practices on the
productivity of different wheat (Triticum
aestivum L.) varieties was conducted at
Government Seed Farm Kalodevi, Gojra,
Toba Tak Singh, Pakistan, during 2005 -
2006. The experiment was laid out under
Randomized Complete Block Design
(RCBD) with split plot arrangement and
having a four replication in which tillage
systems were kept in main plot and wheat
varieties were in sub plots. The net plot size
was 2.5m x 7m. Experiment was comprised
of a following treatment combination i.e; T1
=Zero Tillage with four varieties such as V1
(Bakkhar-2002),V2 (SH-2002),V3(AS-
2002) and V4 (Uqab 2000) and T2 =
Conventional Tillage with four varieties
such as V1 (Bakkhar-2002), V2 (SII-
2002),V3 (AS- 2002) and V4 (Uqab-
2000).The data on various crop growth and
yield attributes were recorded using
standard procedures. The yield components
like biological yield, grain yield and straw
yield were higher in the zero tillage than the
conventional tillage. Among the growth
parameters such as plant height (cm),
number of grains per spike although
increased under zero tillage but the
difference remained statistically nonsignificant
between the conventional and
zero tillage. It is concluded from the results
that tillage has no significant effect on the
varieties to produce the yield greater than
each other. So zero tillage can be preferred
over the conventional tillage in a cottonwheat
cropping system as it will not only
allow the planting at proper time but also it
will reduce the cost of cultivation. These
two factors will add a lot to the final yield
which will ultimately result in more profit.
