Growth and yield of Brassica species as influenced by sulphur application and sowing dates

A field experiment was conducted during winter (rabi) seasons of 1998–99 and 1999–2000 at Ludhiana, to study the response of Brassica species to sulphur application under different dates of sowing. The crop sown on 15 November gave 14.61 and 17.53 q/ha seed yield in 1998–99 and 1999–2000, respectively, which was significantly higher than that of 10 December-sown crop. Application of 25 kg S/ha resulted in significant increase in yield attributes, seed and oil yield of Brassica species during 1998–99. However, seed and oil yields of B. species increased significantly with S application up to 50 kg/ha during 1999–2000. Interaction effects between sowing dates and Brassica species revealed that under delayed sowing on 10 December, B. carinata A. Braun gave significantly higher seed as well as oil yield as compared to B. napus L during 1999–2000. The seed and oil yield of 15 November-sown crop increased significantly up to 50 kg S/ha, whereas the response of 10 Decembe -sown crop was obtained only up to 25 kg S/ha.