| Abstrakt: |
A field experiment was conducted during kharif 2020 at 'M' block, Field unit of AICRN on Potential Crops, University of Agricultural Sciences, Bangalore to optimise the spacing and fertilizer levels to rice bean crop. The data revealed that significantly higher seed yield and stover yield were recorded with the spacing of 30 cm × 10 cm (1545 and 2693 kg ha-1, respectively). Among the fertilizer levels, application of 25:50:25 NPK kg ha-1 recorded higher seed yield (1626 kg ha-1) which was on par with the application of 20:40:20 NPK kg ha-1 (1495 kg ha-1) over 30:60:30 NPK kg ha-1 (1359 kg ha-1), while stover yield was significantly higher with application 30:60:30 NPK kg ha-1 (2901 kg ha-1) as compared to 25:50:25 NPK kg ha-1. Nutrient content did not differ significantly due to different spacing. Whereas, significantly higher NPK content (2.73, 0.57 and 1.85%, respectively) was recorded with application of 30:60:30 NPK kg ha-1 which was on par with application of 25:50:25 NPK kg ha-1 (2.70, 0.54 and 1.82%, respectively). Significantly higher NPK uptake (48.74, 10.06 and 30.77 kg ha-1, respectively) was observed with the optimum spacing of 22.5 cm × 10 cm. However, significantly higher NPK uptake (48.40, 9.91 and 33.57 kg ha-1, respectively) was observed with application of 25:50:25 NPK kg ha-1 followed by application of 20:40:20 NPK kg ha-1 (42.82, 8.83 and 28.36 kg ha-1, respectively). Significantly higher available nutrient status of NPK (278.67, 40.18 and 257.62 kg ha-1, respectively) was observed in 30:60:30 NPK kg ha-1 fertilizer level, whereas the lower NPK availability (247.19, 31.18 and 223.40 kg ha-1, respectively) was observed in control treatment. Similarly, net returns (Rs.100284 ha-1) and B:C ratio (3.57) were higher in the spacing of 30 cm x 10 cm with the application of 25:50:25 NPK kg ha-1 (S2F3). Hence, spacing of 30 x 10 cm and fertilizer level of 20:40:20 NPK kg ha-1 is optimum for higher seed yield and economic benefit to the farmers of Karnataka. [ABSTRACT FROM AUTHOR] |
