Vol. 12, Issue 10 (2023)

Author(s):
Prashant Uraon, Dr. Tej Lal Kashyap, Dr. Angad Singh Rajput and Sanjay Kumar and Satish Kumar Yadaw

Abstract:
A field experiment was conducted at the Instructional Farm, Dau Kalyan Singh College of Agriculture and Research Station, Bhatapara (C.G.) during the kharif season of 2022. The experiment was laid out in Randomized Block Design with 8 treatments and 3 replications. The treatments consisted of recommended dose of fertilizer (RDF), vermicompost, and foliar application of nitrobenzene. The results showed that combining T₂ (100% RDF + Nitrobenzene 20% v/v @ 2.5 ml L-1 (30, 45 and 60 DAT) significantly increased yield attributes like number of panicles hill-1, panicle length, number of grains panicle^-1, and test weight compared to control. Further, the integration of vermicompost along with RDF and nitrobenzene (T₆ (75% RDF + Vermicompost 1 t ha^-1 + Nitrobenzene 20% v/v @ 2.5 ml L-1 and T₇ (50% RDF + Vermicompost 2 t ha^-1 + Nitrobenzene 20% v/v @ 2.5 ml L-1) also improved these parameters over control. Grain and straw yields, along with biological yield, were highest in T₂ which was at par with T₆ and T₇. The minimum yields were recorded in control. Harvest index did not vary significantly between treatments. Uptake of nitrogen, phosphorus and potassium in grain and straw increased in treatments where nitrobenzene was applied along with RDF (T₂) compared to T₁ (Control). The integration of vermicompost with RDF and nitrobenzene (T₆) also improved nutrient uptake over control. Overall, the combined application of recommended fertilizer dose along with nitrobenzene showed maximum improvement in rice yield attributes, yields and nutrient uptake. Addition of vermicompost further enhanced these parameters. The study demonstrates the feasibility of integrating nitrobenzene with inorganic and organic sources for improving productivity of rice.