~ 753 ~ Journal of Pharmacognosy and Phytochemistry 2021; 10(2): 753-756 E-ISSN: 2278-4136 P-ISSN: 2349-8234 www.phytojournal.com JPP 2021; 10(2): 753-756 Received: 27-12-2020 Accepted: 13-02-2021 Kamalkant Yadav Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India DK Shukla Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India VK Singh Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India Aditi Agrawal Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India Rohitash Singh Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India SA Durgude Department of soil science GB Pant Uniiversity of Agriculture and technology, Pantnagar, Uttarakhand, India Corresponding Author: Kamalkant Yadav Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India Effect of nutrients and genotypes on growth and yield of pigeonpea ( Cajanus cajan (L.) Millasp) Kamalkant Yadav, DK Shukla, VK Singh, Aditi Agrawal, Rohitash Singh and SA Durgude Abstract A field experiment was conducted during the kharif season of 2018-19 on sandy-loam soil at G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, to study the “Performance of promising pigeonpea [Cajanus cajan (L.) Millsp] genotypes at different rates of fertilization in tarai region of Uttarakhand.” with an objectives to optimize the fertilizer dose for getting maximum yield per hectare and effect on growth, yield attributes and yield of pigeonpea (Cajanus cajan (L.) Millasp). The experiment laid out in factorial RBD design keeping genotypes, viz. PA 421, PA 291, UPAS 120, and different fertility level management are control, 75% RDF, 100% RDF, 125% RDF at the time of sowing. The results obtained during course of investigation revealed that genotypes significantly influenced various growth parameters, yield attributing characters and yield. Genotype PA 421 was significantly superior over PA 291 and UPAS 120 in terms of yield attributing and PA 421 recorded 20.35% and 22.30% higher grain yield than PA 291 and UPAS 120, respectively. Among the fertility levels, 125% RDF recorded significant response to all the growth parameters at various growth stages which resulted in higher growth parameters, yield attributes and yield (2359 kg/ha) of pigeonpea compared to other fertility levels, 125% RDF was at par with 100% RDF. Hence, for achieving higher yield of pigeonpea, genotype PA 421 with the application of 100% RDF can be a better option in tarai regions of Uttarakhand. Keywords: Genotypes, Fertility level, RDF, NPK Introduction Pigeonpea [Cajanus cajan (L.) Millsp], which is also known as arhar, tur, redgram, congopea, no eye pea etc., is one of the most important pulse crop cultivated in India. Nutritious and wholesome, the green seeds (pods) of pigeonpea serve as vegetable. The factors responsible for lower yield of pigeonpea in India as compared to the whole world are lack of improved and high yielding short duration varieties, good quality seed, poor nutrient management etc. This could be improved by adopting suitable agro-techniques in general and proper nutrition in particular. Pigeonpea remove about 63.3 kg N, 15.8 kg P2O5 and 49.8 kg K2O per hectare to produce one tone of pigeonpea grains (Tamboli et al., 1995) [10] . Proper nutrient management in pigeonpea meets out its nutrient demand and resulted in higher yield. The yield as well as nutrient use efficiency can be boosted by following balanced nutrient management. The balanced nutrient management method basically focuses on increase in crop yield, improvement in quality of produce and maintenance or improvement of soil fertility. To achieve balanced nutrition nitrogen, phosphorus and potassium are the three major macronutrient applied through fertilizer in pigeonpea. Materials and Materials A field experiment was conducted during kharif season of 2018 in Pulse Agronomy Block of Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand). The maximum temperature during the crop season ranged between 20.3-37.2 0 C. and minimum temperature ranged between 3.9-26.9 0 C. During the crop growing season, 1316.9 mm rainfall was received. The soil of experimental field was sandy loam in texture having high organic carbon (0.83%), low available nitrogen (270.9 kg/ha), high available phosphorus (26.1 kg/ha) and medium available potassium (230 kg/ha), with slightly alkaline soil reaction (pH=7.3).The experiment was laid out in randomized block design with two factors and three replications. Treatments were consisted of three genotypes viz., PA 421, PA 291 and UPAS 120 and four fertility levels viz., control (no fertilizer), 75% RDF, 100% RDF and 125% RDF. The fertilizer was applied as basal, using RDF (18:48:24 kg/ha N: P2O5: K2O), which was fulfilled through 150 kg/ha NPK mixture (12:32:16).