Effect of Real Time Rainfall Pattern on Yield and Yield Attributing Parameters of Toria (Brassica campestris) in an Inceptisols of Assam, India

Abstract

A field experiment was conducted during rabi seasons of 2018-19 and 2019-20 in the experimental field of AICRP for Dryland Agriculture, Biswanath college of Agriculture, Assam Agricultural University, Biswanath chariali, Assam to study the ‘‘Effect of Real Time Rainfall Pattern on Yield and Yield Attributing Parameters of Toria (Brassica campestris) in an Inceptisols of Assam, India” under AICRPDA, NICRA. Two factors with different levels were considered viz. factor 1: Dates of sowing with 4 levels i.e. S1-41th SMW, S2-44th SMW, S3-46th SMW, and S4- 48th SMW, & factor 2: variety with 3 levels i.e. V1-JT-90-1(Jeuti), V2-Yellow sarson (Benoy) and V3- TS-38. Growth, yield and yield attributing characters of toria varieties were observed and found to be influenced by different dates of sowing.  S1 registered higher plant height (43.2 cm, 92.9 cm and 106.6 cm & 40.2 cm, 89.8 cm and 101.5 cm) and number of branches (3.8, 5.3 and 7.2 & 3.4, 5.1 and 6.9) at 30 DAS, 45 DAS and 60 DAS, respectively during 2018-19 and 2019-20. Yield attributing characters like number of siliqua, number of seeds per siliqua, 1000 seed weight (g) were gradually decreased with advancement of sowing dates. Among the three varieties V1 (Jeuti) recorded highest seed yield (8.9 q ha-1 and 8.1 q ha-1) and stover yield (23.4 q ha-1 and 22.2 q ha-1) in 2018-19 and 2019-20 respectively. Highest HI (28.5% and 25.8%) was recorded in S1 and lowest was recorded in S4 (20.7% and 14.6%).