• Sourav Pathak
• Avijit Kr. Dutta

After the first green revaluation (1966) in our country, production was increased by using of huge quantity of fertilizer, pesticides, irrigation but thereafter it was realized that by using heavy amount of fertilizer and pesticides, soil health was damaged and even human health was seriously affected. In this backdrop, organic farming has come into existence in 20th century. Organic farming is an eco-friendly and cost minimized farming practices capable to give same yield compare to chemical farming. The present investigationwas conductedduring post kharif seasons of 2017 and 2018consideringdifferent organic growing conditions as treatments,viz. Enriched Sanjeevani(1%) with straw mulching (T1), BD-501 (3%) with mulching (T2), Sasyagavya (10%) with mulching (T3), and inherent fertility status of experimental plot as absolute control (T4). Seven varieties, namely,V1 (Sukhsagar); V2 (Agrifound Dark Red); V3 (BhimaSweta); V4 (Bhima Dark Red); V5 (Nasik Red); V6 (ArkaNiketan) and V7 (N-53) were used for the experiment by adopting Factorial Randomized Block Design with their three replications. Several growth, yield and quality attributing characters were studied. Results found to be significant in all the studied characters for growth, yield and quality parameters under different treatments and varietal situations. From the findings, it may be concluded that Sasyagavya(10%) is the best for production of onion organically followed by BD-501 (3%) along with vermicompost (10 tha-1), wood ash (5 t ha-1) coupled with mulching with dry paddy straw. Among varieties, Sukhsagar, Agrifound Dark Red, BhimaSweta, Bhima Dark Red and ArkaNiketan are suitable for late kharifor early rabiseason cultivation in the south Chhotanagpur plateau of Jharkhand. Economics study also revealed that Sasyagavyaand BD-501 are highly suitable for commercial cultivation of onion through organic intervention in the plateau of Jharkhand by employing these varieties of the crop during the post kharifseason of the region.

Onion; Allium cepa; Organic Farming; Growth; Yield; Quality, B:C ratio.

"SCREENING ONION VARIETIES THROUGH ORGANIC FARMING IN THE SOUTH CHHOTANAGPUR PLATEAU OF JHARKHAND DURING POST-KHARIF SEASON", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.492-500, May-2019, Available :http://www.jetir.org/papers/JETIR1905273.pdf

"SCREENING ONION VARIETIES THROUGH ORGANIC FARMING IN THE SOUTH CHHOTANAGPUR PLATEAU OF JHARKHAND DURING POST-KHARIF SEASON", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp492-500, May-2019, Available at : http://www.jetir.org/papers/JETIR1905273.pdf