M.S. Islam
IWM Division, BARI, Gazipur
M. A. K. Mridha
IWM Division, BARI, Gazipur
M. S. Alam
M. H. Rashid
IWM Division, BARI, Gazipur
Interaction of three irrigation intervals, 14(T1), 21 (T2) and (T3) days, with three different fertilizer doses-high (R1), medium (F2) and low (F3) were tested on potato (variety: Cardinal) in silty clay loam soil of Joydebpur during 1999-2000 and 2000-2001. The highest yields of 28.76 t/ha and 17.67 t/ha were obtained in the irrigation treatment T1 (14 days intervals) with high fertilizer dose, F1 in 1999-2000 and 2000-2001, respectively. The lowest yields of 16.08 t/ha and 12.50 t/ha were found from irrigation treatment T3 (28 days interval) with low dose of fertilizer (F3) application in 1999-2000 and 2000-2001, respectively. Total water received by the treatment T1. T2 and T3 were 364,273 and 182 mm in 1999-2000 and 355,268 and 185mm in 2000-2001. Effective rainfall was 16 mm in 1999-2000 but there was no rainfall in 2000-2001. The maximum benefit cost ratio (2.34) was found in the treatment T1 irrigated at 14 days interval with high fertilizer dose N150 P60 K150 S20 Zn4 kg per hectare. The highest marginal rate of return was 556.55 percent in the same treatment. In potato cultivation irrigation at 14 days interval with high fertilizer dose was found to be the best practice to produce potato economically.
Potato, irrigation, fertilizer dose, interaction
Central farm. BARI, Gazipur
Crop-Soil-Water Management
The objective of this study was to identify the best irrigation scheduling and fertilizer doses that produces the maximum yield of potato.
The experiment was conducted during the rabi season of 1999-2000 and 2001 at BARI. Joydebpur (24.010 N, 90.430 E). Gazipur. The soil is clay loam in texture containing 38.64 percent sand, 24 percent silt and 37.36 percent clay. The bulk density and field capacity of the field soil were 1.5 g/cc and 27.50 percent, respectively. Potato seeds. cv. Cardinal were planted on 1st December 1999 and 18 December 2000 and harvested on 6th March 2000 and 14th March 2001 in 1999-2000 and 2000-2001, respectively. The unit plot size was 3 m×4 m. Spacings of 60 cm ×30 cm were maintained i the plots. The experiment was conducted according to the split-plot design with three replications. Irrigation treatments were assigned in the main plots and fertilizer doses in the sub-plots. Three irrigation intervals 14, 21 and 28 days, with three different fertilizer doses-high, medium and low were as follows:
Treatments were:
i.Irrigation levels
T1= Irrigation at 14 Days interval
T2= Irrigation at 21 Days interval
T3= Irrigation at 28 Days interval
ii.Fertilizer Doses (kg/ha)
F1= N150 + P60 + K150 + S20 + Zn4
F2= N120 + P50 + K120 + S10 + Zn2
F3= N100 + P40 + K100 + S5 + Zn1
Annual Research Report 2000-2001
In potato cultivation, 14 days irrigation interval with high fertilizer dose, N150 P60 K150 D20 Zn4 kg per hectare is found to be the best practice to produce potato economically.
Report/Proceedings