Comprehensively, nutrient deficiencies in humans and animals are a quiet epidemic in many underdeveloped nations. Nutrient deficiencies in humans and animals are a global problem in most developing countries. Lentil is one of the most important and nutritious Rabi pulse in India. It’s a leguminous crop that improves the soil fertility through biological nitrogen fixation. In this contest an experiment was conducted to study the enhancement of plant growth, chlorophyll content, flowering, yield and seed protein content by plant growth regulators in DPL-62 lentil (Lens culinaris L. Medik) variety during two Rabi seasons of 2019-20 and 2020-21. The field experiment was laid out in randomized block design (RBD). Five growth regulators viz. triiodobenzoic acid (TIBA), gibberellic acid (GA3), cytokinin, indole acetic acid (IAA), and naphthaleneacetic acid (NAA) were used in Eleven treatments were tested T1: Control, T2: 25 ppm TIBA, T3: 50 ppm TIBA, T4: 25 ppm GA3, T5: 50 ppm GA3, T6: 5 ppm Cytokinin, T7: 10 ppm Cytokinin, T8: 25 ppm IAA, T9: 50 ppm IAA, T10: 25 ppm NAA, T11: 50 ppm NAA. The results revealed that the maximum plant height (38.12 & 38.15 cm at harvest) was obtained by the 50 ppm GA3 followed by 50 ppm IAA (37.00 & 38.10 cm at harvest) spray at all stages. However, the 50 ppm TIBA showed better results (per plant) viz., number of branches (15.00, 15.33 at 110DAS), leaf area (86.50, 86.32 at 110DAS), number of pods (160.20, 160.37), pod setting (65.45, 65.50%), seed weight (2.02, 2.10g), test weight (27.32, 27.39g) and seed yield (1500.00, 1510.00 kg ha-1) of lentil as compared to all other treatments. The maximum days of flowering (67.50, 67.85) and days of maturity. On the basis of the observed results the growing of DPL-60 lentil variety with foliar applications of 50 ppm TIBA is recommended for the farmers of the test area for greater production and profitability.
To study the response of different levels of salicylic acid on growth characteristics, chlorophyll intensity, yields attributes and yield of black gram (Vigna mungo L.) under rainfed conditions. The field experiment was conducted at Department of Crop Physiology, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur, Uttar Pradesh, India during kharif season in the year 2017-18. The experiment was laid out in Randomized Block Design (RBD) with 10 Treatments replicated thrice and assigned in 30 plots. The treatment comprised as T1: Control, T2: Foliar application of salicylic acid @ 50 ppm at 20 DAS, T3: Foliar application of salicylic acid @ 50 ppm at 40 DAS, T4: Foliar application of salicylic acid @ 50 ppm at 60 DAS, T5: Foliar application of salicylic acid @ 100 ppm at 20 DAS, T6: Foliar application of salicylic acid @ 100 ppm at 40 DAS, T7: Foliar application of salicylic acid @ 100 ppm at 60 DAS, T8: Foliar application of salicylic acid @ 150 ppm at 20 DAS, T9: Foliar application of salicylic acid @ 150 ppm at 40 DAS, T10: Foliar application of salicylic acid @ 150 ppm at 60 DAS. The results showed significant increments in Growth attributes, relative water content (%), chlorophyll intensity (SPAD meter value), yield and yield attributes viz., plant height (36.50 and 38.10 cm) at 70 DAS and maturity, number of leaves plant-1(8.66, 23.66 and 22.0) at 35, 70 DAS and maturity, number of branches plant-1 (3.9, 8.60 and 10.33) at 35, 70 DAS and maturity, dry weight of plant-1(2.76, 6.12 and 5.01 g) at 35, 70 DAS and maturity, dry weight of stem plant-1(2.76, 7.12 and 7.96 g) at 35, 70 DAS and maturity, total dry weight of plant (4.96, 13.24 and 21.97 g) at 35, 70 DAS and maturity, total leaf area plant-1 (211.33 and 384.87 cm-2) at pre and post flowering, Relative water content (51.50 and 43.43) at Pre and post flowering, Chlorophyll content (49.93 and 40.90) at pre and post flowering, Number of pods plant-1 (46.00) at maturity, Dry weight of pods plant-1 (8.99g) at maturity, seed yield plant-1 (6.66 g), 100-Seed weight (4.41 g), Harvesting index (30.30%), Grain Yield (10.35 q ha-1) with the foliar application of salicylic acid @ 150 ppm at 60 DAS while minimum in control. The addition of salicylic acid under rainfed conditions resulted in significant increments in growth parameters, chlorophyll intensity, yield and yield attributes of black gram in rainfed conditions. Thus, it may be concluded that the foliar application of salicylic acid @ 150 ppm was found to be optimum concentration in enhancing growth and yield of a black gram over rest of treatment under rainfed conditions.
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