Study on Water and Nutrient Movement and Root Growth Pattern in Tomato Crop under Drip Irrigation
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Date
2022
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DRPCAU, PUSA
Abstract
The research work entitled “Study on Water and Nutrient Movement and Root Growth Pattern in Tomato Crop under Drip Irrigation” was conducted with ten treatments. The treatments comprised with differentreplicationwith different RDF level.Tomato crop of varietyAnsal (Hybrid) was selected for experiment. The field layout was done by using RBD with three replications. The tomato plants planted in experiment field with drip irrigation and fertigation.
The water movement at the depth of 0-5 cm varies from 16 -31 %. At depth of 5-10 cm, water content varies from 12 to 26 %. At depth of 10-15 cm, maximum moisture content was found 21 % in treatment T2. At depth of 15-20 cm moisture content 20 % in treatment T2.
The results suggest that with drip irrigation, the majority of the nitrates were detected in the layer of soil 0-20 cm, as compared to flood irrigation, where more nitrates leached down 40-50 cm. In treatment T8(60 % RDF+4lph dripper) maximum nitrogen, phosphorous, and potassium content were recorded as 140.90, 92.83, and 169.11 kg ha-1 respectively whereas in T7 (60 % RDF+2lph dripper)), these values were 137.98, 90.41and 167 kg ha-1 at depth of 15-20 cm,0-5 cm,0-5 cm, respectively. In treatment T5(80 % RDF + 4 lph emitter)maximum nitrogen, phosphorous, and potassium content were recorded as 165.54,93.26 and 168.25 kg ha-1 at depth of 15-20
cm, 0-5 cm, 0-5 cm respectively, where as in treatment T4(80 % RDF + 2 lph emitter) found as 155.90, 92.69 and 168.25 kg ha-1 respectively at depth of 15-20 cm,0-5 cm,0-5 cm respectively. Similarly, in treatment T2(100 % RDF + 4 lph emitter)maximum nitrogen, phosphorous, and potassium content were recorded 165.44, 93.12, and 169 kg ha-1 at depth of 15-20 cm,0-5 cm,0-5 cm respectively. In treatment T1(100 % RDF + 2 lph emitter)recorded as 137.98, 90.41and 167 kg ha-1 respectively. Whereas in treatment T3(100 % RDF+6 lph emitter) was 197.81, 97.26, and 180.56 kg ha-1 at depth of 15-20 cm,0-5 cm, 0-5 cm respectively. In flood irrigation maximum nitrogen, phosphorous and potassium contentwas found 277.9, 209.03, and 264 kg ha-1 at depth of 40-50 cm,0-5 cm,10-15 cm respectively. The maximum yield 83.77tons ha-1was recorded in treatment T5(80 % RDF + 4 lph emitter).