Vol. 6, Issue 4 (2018)
Leaf area index, productivity and water use pattern of summer clusterbean influenced by different irrigation scheduling and growth regulators
Author(s): Parvati Deewan, JJ Patel, R verma and HP Parewa
Abstract: A field experiment was conducted during summer season of the year 2009 at Anand Gujarat to study the different irrigation scheduling and growth regulators†with sixteen treatment combinations consisting of four levels of irrigation schedules (IW: CPE ratios) viz., I0 – Control- Critical growth stages, I1 – 0.6 IW: CPE ratio, I2 – 0.8 IW: CPE ratio, I3 – 1.0 IW: CPE ratio as a main plot treatments and four plant growth regulators viz., GR0 – Control- water spray, GR1 – NAA @ 100 ppm at 30 and 60 DAS, GR2 – GA3 @ 40 ppm at 30 and 60 DAS, and GR3 - AA @ 25 ppm at 30 and 60 DAS were relegated in sub plot as sub plot treatments tested under split plot design with four replications. The leaf area index was significantly influenced by irrigation scheduling and growth regulators. The leaf area index at 20, 40 DAS and at harvest (44.56, 93.90 and 175.64 respectively) were significantly higher when irrigation was applied at 1.0 IW: CPE ratio (I3) and when growth regulators study significantly affect the leaf area index at similar stages higher under treatment GR1 (NAA @ 100 ppm at 30 and 60 DAS). The treatment combination I3GR1 (1.0 IW: CPE ratio along with application of NAA @ 100 ppm at 30 and 60 DAS) produced significantly the highest leaf area index at 40 DAS and at harvest 113.87 and 195.31. Lower leaf area index was observed under treatment combination I0GR0 (control- irrigation as per recommendation along with water spray). The maximum water use pattern was noticed under treatment I3 (1.0 IW: CPE ratio) and minimum was also recorded with lower IW: CPE 1.0 ratio. When the growth regulators are application, Higher water use pattern were also recorded under treatment GR1 (NAA @ 100 ppm at 30 and 60 DAS) and minimum with control as water spray. But the highest water expense efficiency (81.78 kg/ha-mm) was recorded under treatment I0 (Control), followed by I1 (0.6 IW: CPE ratio, 48.47 Kg/ha-mm) and I2 (0.8 IW: CPE ratio, 37.16 kg/ha-mm). The lowest water expense efficiency (35.42 Kg/ha-mm) was observed under treatment I3 (1.0 IW: CPE ratio).
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How to cite this article:
Parvati Deewan, JJ Patel, R verma, HP Parewa. Leaf area index, productivity and water use pattern of summer clusterbean influenced by different irrigation scheduling and growth regulators. Int J Chem Stud 2018;6(4):1978-1984.
