YIELD
RESPONSE OF WHEAT TO THE APPLICATION
OF LIME AND PHOSPHOROUS
Mahmuda
Motmainna,
Md. Abdullahil Baque*, Md. Mahfuzar Rahman, Md. Samsujjoha
Chowdhury and Sagib Al Maruf
*Corresponding Author email:
bellah_77@yahoo.com
Abstract
A
field experiment was conducted at Agronomy research field, Sher-e-Bangla
Agricultural University, Dhaka, Bangladesh during November 14, 2012 to March,
2013 in rabi season with a view to find out the yield response of wheat (BARI
gom 26) to the application of lime
and phosphorous. The experiment comprised three levels of lime viz. (i)
L0 = no lime (control), (ii) L1 =1 t ha-1, and
(iii) L2 = 2 t ha-1 and four phosphorus levels, viz. (i)
P0 = no P2O5 (control), (ii) P1 =
48 kg P2O5 ha-1, (iii) P2 = 77 kg P2O5
ha-1 and (iv) P3
= 106 kg P2O5 ha-1. The experiment
was laid out in a split-plot design with three replications where limes were
placed in the main plots and phosphorus fertilizers were in sub-plots.
Experimental results indicated that different lime levels had significant
effect on effective tillers m2,
spike length, spikelets spike-1, grains spike-1, grain
yield, straw yield and harvest index. The highest grain yield (3.09 t ha-1)
was recorded at 2 t ha-1 that mainly attributed to the maximum effective
tillers plant-1, spikelets spike-1, grains spike-1
and 1000-grain weight. Among the
different phosphorus levels , 77 kg P2O5 ha-1
gave the highest grain yield (3.16 t ha-1) and it was mainly
attributed by the maximum effective tillers plant-1, maximum
spikelets spike-1, maximum
grains spike-1 and 1000-grain weight. The interaction effect
of lime and phosphorus levels showed significant response on yield attributing
characters of wheat. The highest plant height (85.20 cm), effective tillers m-2
(223.30), spike length (17.73 cm), spikelets spike-1 (20.67) grains
spike-1 (64.33), 1000 grain weight (42.50 g) were
observed with interaction of lime and phosphorus treatment. Again,
the maximum grain yield (3.87 t ha -1) was found with the
interaction of 2 t ha-1 lime and 77 kg P2O5 ha-1
and straw yield (6.437 t ha-1) with interaction of 2 t ha-1
lime and 106 kg P2O5 ha-1.
Keywords: Wheat, Lime, Phosphorus and
Yield.
