Effect of micronutrients on growth and yield of onion under problematic soil environment
Paper Details
Effect of micronutrients on growth and yield of onion under problematic soil environment
Abstract
The field experiment was conducted to study the effect of micronutrients on growth and yield of onion (cv. Taherpuri) in High Ganges River Floodplain Soils (AEZ 11) during the period from November 2008 to February 2009. The experimental field soil was medium fertile with pH = 7.6 and silty loam in texture. The micronutrient combinations viz. T1=control, T2=Zn, T3=B, T4=Zn+B, T5=Zn+B+Mo, T6=Zn+B+Mn, T7=Zn+B+Cu, T8=Zn+B+Cl, T9=Zn+B+Mo+Mn, T10=Zn+B+Mo+Mn, T11=Zn+B+Mo+Cu+Cl and laid out in RCBD with three replications. The rate of micronutrients were Zn:B:Mo:Mn:Cu:Cl=3:3:0.5:4:1:20 kg/ha in the treatments and also N:P:K:S=50:50:100:20 kg/ha used as basal. The results were found to be significant in most of the yield contributing parametrs of onion. The maximum yield and yield contributing parameters of onion i.e. leaves/plant (14.63), plant height (61.30 cm), diameter of bulb (14.97 mm), fresh weight of leaves (31.42 g), fresh weight of bulb (9.21g), diameter of bulb (4.36 cm) and bulb yield (13.38 t/ha) were obtained from T4 (Zn + B) but splitting of bulb (9.72) in T7 (Zn + B + Cu) and fresh weight of roots (1513 mg) in T6 (Zn + B + Mn). The minimum growth and yield contributing parameters were recorded in control (T1). The response of Zn is more than B but both are statistically similar in most cases and the combination of (Zn + B) is better for vegetative growth and yield of onion. It can be concluded that the response of different micronutrients for onion cultivation in calcareous soils can be expressed the following orders: Zn+B>Zn>B>Mo.
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