INFLUENCE OF FERTILIZER AND WEED MANAGEMENT ON YIELD AND NUTRIENT UPTAKE IN ONION (Allium cepa L.)

Abstract

A field experiment was conducted to find out appropriate nutrient and weed management practices for yield maximization and nutrient uptake of onion during rabi 2018-19 at the experimental plot of Regional Research and Technology Transfer Station, Keonjhar of Odisha. The experiment was laid out in Split plot technique with fifteen treatments viz., Main plot belongs to Nutrient management (N) with treatments i.e. N1- Soil test based fertilizer recommendation (STBFR), N2 - 50% STBFR + FYM (Based on N requirement), N3-STBFR + Sulphur), while Subplots belongs to weed management (W) with treatments viz., W1- Pendimethalin (PE) @ 0.8 Lha-1, W2- Oxyflurofen (PE) @ 0.2 Lha-1, W3-Pendimethalin (PE) @ 0.8 Lha-1+ one hand weeding at 25 days after transplanting(DAT), W4-Oxyflurofen (PE) @ 0.2 Lha-1+ one hand weeding at 25 days after transplanting(DAT), W5- one hand weeding at 25 days after transplanting (DAT). The highest onion bulb yield of 16.72 t ha-1 was obtainedunder the treatment applied with Pendimethalin (PE) @ 0.8 Lha-1 along with one hand weeding at 25 DAT, followed by Oxyfluorfen 0.2Lha-1 pre-emergence + 1 hand weeding at 25 DAT (15. 88 t ha-1). The treatment combination of N2W3 (96.83, 16.80, 57.73 kg ha-1) was recorded the highest N, P, and Kuptake by crops respectively while N3W3 (51.39 kg ha-1 ) was recorded as the highest S uptake by a crop over the rest of the treatments.

Influence of Fertilizer and Weed Management Practices on Yield, Economics and Post-Harvest Soil Properties of Onion (Allium Cepa L.) in North Central Plateau Zone of Odisha

“…95 t ha -1 ). Reduced competition between crop and weed due to proper management practices of weed accelerating the onion crop's development and growth, resulting in obtaining higher bulb yield of onion (Patel et al, 2011, Mishra et al, 2021. However, a comparatively lesser yield was recorded from the treatment aided with only hand weeding suggesting unadvisable weed management practices as compared to other treatments in this experiment.…”

“…Total bulb yield was increased 28.04% in when soil was applied with 50% STBFR along with FYM than sole application of soil test-based fertilizer recommendation. Integrated use of both organic and inorganic fertilizers resulting the improvement in bulb yield can be attributed to a controlled release of soil nutrients via mineralization of organic manures (Prusty et al, 2019 andMishra et al, 2021). The INM approach offers "win-win" opportunities for increasing crop yield and soil fertility while lowering environmental impact (Gnanasundari et al, 2022).…”

“…The demand of onion has increased many folds recently owing to the fact that it is the only vegetable spice as it is a vital ingredient for both for the vegetarian and nonvegetarian diets (Nayak et al, 2016;Sahoo and Tripathy, 2019). Globally, after China, India produces about 16-17 mt of onion making it the world's second highest producer with the highest amount of area under onion cultivation in the whole worldandcontributes 21.5% share of onion production in the world but on the basis of productivity of onion crop, India ranks ninth in the world (Anonymous, 2019), so the productivity is not commendable owing to many factorsand weed and nutrient management are two major aspects among all (Mishra et al, 2021). In India, it is basically cultivated as a rabi crop(harvested during April-May) around 60% and successively 20% in kharif season (harvested during Oct-Nov) and another 20% in late kharif season (harvested in Jan-Feb) (Mishra et al, 2017).…”