Effect of foliar spray of naa on growth, yield and seed quality of soybean [Glycine max (L.) merrill.) var. MAUS 71
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Date
2022-11-30
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Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Abstract
A field experiment was conducted at Experimental farm, Agricultural Technical School, Vasantrao Naik Marathwada Agriculture University, Parbhani, during kharif 2021-22 to evaluate “Effect of foliar spray of NAA on growth, yield and seed quality of soybean (Glycine max (L.) Merrill.) var. MAUS 71”. The experiment was laid out in Randomized Block Design with nine treatments and three replications. The different treatments were foliar application of NAA of various concentrations viz., 10, 20, 30, 40, 50, 60, 70, 80 and 90 ppm along with Control. Spraying was done at 35 days after sowing. The results revealed that foliar spray of NAA 90 ppm (T9 ) followed by foliar spray of NAA 80 ppm (T8) significantly enhanced yield and yield contributing parameters i.e. Plant height, number of branches per plant, leaf area, plant total dry weight, number of pods per plant, length of pod (1 seeded, 2 seeded, 3 seeded), seed yield, biological yield and yield per hectare were favourable respectively while harvest index is maximum in case of T6 (NAA 60 ppm) to have an increasing effect on the seed yield when compared with control and rest of the treatments.
Growth parameters like AGR, RGR and NAR were found highest in case of T9 (NAA 90 ppm) in successive growth stages.
Similarly foliar spray of T9 (NAA 90 ppm) followed by foliar spray of T8 (NAA 80 ppm) significantly enhanced seed quality parameters viz., germination percentage, root length, shoot length and vigour index when compared with control and rest of the treatments.
In case of protein content, the treatment T9 (NAA 90 ppm) found superior over all the treatments and oil content in seed was found highest in the treatment T8 (NAA 80 ppm).
Correlation studies revealed that character like, plant height, number of branches per plant, leaf area, plant total dry weight, RGR, NAR, number of pods per plant, length of pod (1 seeded, 2 seeded, 3 seeded), seed yield, biological yield, yield per hectare and harvest index had significant and positive correlation with seed yield. While AGR and RGR was found positive but non-significant correlation with seed yield. This indicates there was strong association between seed yield and yield contributing characters.