Most
of the arable soils in Pakistan are deficient in plant available phosphorus (P)
and boron (B) primarily due to alkaline and calcareous nature along with low
organic matter. A combined deficiency of these nutrients may intensify the
plant growth suppression by reducing their efficient utilization. A pot
experiment was conducted to investigate the interactive effect of P and B on
growth, nutrient accumulation and grain yield of wheat grown on calcareous
soil. Wheat crop was grown at three P levels (45, 90 and 135 kg P ha-1)
in combination with five B levels (0, 0.5, 1.0, 1.5 and 2.0 kg B ha-1)
following completely randomized design. The results revealed that yield and
yield related attributes increased linearly with the addition of B at each P
level. Nonetheless, the significant interactive effect of both nutrients was
most pronounced in the treatment having 90 kg P ha-1 and 1.5 kg B ha-1.
Applied B rates resulted in relatively higher P concentration in grains and
straw at P level of 90 kg ha-1 contrarily to 45 and 135 kg P ha-1.
The B concentration in grains and straw increased with corresponding addition
of B at each P level but at variable rate, with the maximum response at higher
P level. Grain and straw yield illustrated positive correlation with total P
uptake (R2 = 0.96 and 0.81) and total B uptake (R2 = 0.95
and 0.70) respectively. Likewise, positive correlation (R2 = 0.94)
between total P uptake and total B uptake under combined application of P and B
indicated their synergistic relationship. Overall, the treatment combination of
90 kg P ha-1 with 1.5 kg B ha-1 was found as the most
suitable dose for better plant growth, nutrient accumulation and grain yield of
wheat.
Boron nutrition grain yield nutrient interaction synergism wheat
Birincil Dil | İngilizce |
---|---|
Bölüm | Articles |
Yazarlar | |
Yayımlanma Tarihi | 1 Ocak 2019 |
Yayımlandığı Sayı | Yıl 2019 Cilt: 8 Sayı: 1 |