A. R. Akanda
Principal Scientific Officer
SRC, BARI, Gazipur
M. A. Rashid
Chief Scientific Officer
RARS, Akbarpur, BARI
Kh. Mazidul Hossain
Principal Scientific Officer
Soil Science Division, BARI, Gazipur
M.S. Rahman
Scientific Officer
IWM Division, BARI, Gazipur
Drip irrigation at 3 days intervals with along with mulch and different levels of macro and micronutrients were tested to study their effects on yield, economic return of tomato (CV:BARI Tomato-3) during the rabi season of 2007-2008 at the central research station, BARI, Gazipur. The yield and yield contributing characters of tomato varied significantly under different levels of micronutrients. The highest marketable fruit yields (59.27 t/ha) were recorded in treatment T2 with fertilizer doses N100 P50 K100 B1.5 Zn2 Mg2 kg/ha. The cull yield (10.51 t/ha) was also the lowest in this treatment. The cull yield was the highest (20.20 t/ha) in treatment T1 where no micronutrients were used along with NPK. It reveals that use of micro nutrients along with NPK under fertigation has a good effects on quality fruits of tomato. The overall tomato yield was lower than the potential due a heavy shower on February 19, 2008 and also for virus infestation. Lot of fruits were damaged and graded as unmarketable due to heavy rains. The seasonal water used by the treatments were same i,e 370 mm including a seasonal effective rainfall of 105mm. The highest BCR (3.66) was also found from high yielder treatment T2.
Drip irrigation, Micronutrients, Fruit quality, Winter tomato, Irrigation
IWM Research field, BARI, Gazipur
Crop-Soil-Water Management
The specific objectives were to determine the effects of different micro-nutrients on the fruit quality and yield of winter tomato under drip irrigation, and to assess the cost effectiveness of the system.
A field experiment on tomato (cv: BARI Tomato-3) was conducted at the IWM Research field, BARI, Gazipur during the rabi season of 2007-2008. The soil was silty clay loam with PH 6.49, field capacity 28.5 percent, wilting point 14.4 percent (weight basis) and bulk density 1.50 g/ce.
The experiment was conducted with the following treatment combinations;
T1 = Drip irrigation at 3 days interval with mulch and fertilizer doses N100 P50 K100 kg/ha
T2 = Drip irrigation at 3 days interval with mulch and fertilizer doses N100 P50 K100 B1.5 Zn2Mg2 kg/ha
T3 = Drip irrigation at 3 days interval with mulch and fertilizer doses N100 P50 K100 B1 Zn4Mg4 kg/ha
T4 = Drip irrigation at 3 days interval with mulch and fertilizer doses N100 P50 K120 B2 Zn6 Mg8 kg/ha
The experiment was conducted in a randomized complete block design (RCBD) and each treatment was replicated four. The unit plot size was 4.0 m × 2.4 m with recommended plant spacing of 60 cm × 40 cm. Total amount of P in the form of TSP and total amount of micronutrients were applied in the field at the time of final land preparation while N and K in the form of Urea and MP were applied with irrigation water into three equal splits. Fertigations were done on December 10, 2007, December 28, 2007 and January 17, 2008. The seedlings of 29 days old were transplanted on 26 November 2007. For mulching, paddy straw @ 10 t/ha was used after 7 days of transplanting. The average dripper discharge was 4.60 litres/hr at optimum dripping condition. Irrigation was applied through drip system as per treatments to meet the crop evapotranspiration (ET crop). Tomatoes were harvested from 25 February to 24 March 2008.
Annual Research Report 2009, IWM, BARI
From the study, it is observed that use of balanced doses of micro nutrients along with NPK with fertigation system has a good effect on obtaining quality fruits of tomato. As, this is one year study, so far conclusion, it needs further trial for confirmation.
Report/Proceedings