Effect of plant density, N levels and moisture conservation practices on the performance of Indian mustard (Brassica juncea) and available N status of soil

A.L. RAJPUT

doi:10.59797/ija.v57i2.4618

Authors

A.L. RAJPUT

DOI:

https://doi.org/10.59797/ija.v57i2.4618

Keywords:

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Abstract

A field experiment was conducted in the winter (rabi) seasons of 2007-08 and 2008-09, to study the effect of plant geometries, nitrogen levels and application of anti-transpirants on the growth, yields, economics, N-uptake soil N-status and N-balance of Indian mustard (Brassica juncea L. Czernj & Cosson), Indian mustard sowing in paired row of 30 + 60 10 cm spacing gave 0.17 t/ha extra seed yield of mustard without reducing growth at- tributes, yield components, economics, WUE, oil content and soil N-status. Growth and yield attributes and maxi- mum increment in seed and stalk yields of mustard were recorded with 80 kg N/ha and it were 8.54% and 14.26% higher over the control, respectively. The spraying of PMA + kaolin (6%) at 45 and 90 DAS increased the seed and stalk yields by 9.41 and 15.17% respectively over rest of treatments. The highest dose of nitrogen @ 80 kg/ha with paired row spacing of 30 + 60 10 cm planting along with combined spray of PMA @ 250 ppm + kaolin (6%) at 45 and 90 days after sowing increased production and quality of mustard and improved N status of soil.

References

AICRP-RM 2000. Annual Report of All India Coordinated Research

Table 3. Balance sheet of N (kg/ha) as influenced by plant geometry, N level and anti-transpirants in mustard.

Treatment N-added in soil (b) N-uptake by crop (c) Soil N-status Actual gain/loss Availabe N-balance

-08 2008-09 2007-08 2008-09 after harvest (d) over initial (a - d) (kg/ha) (a + b)

-08 2008-09 2007-08 2008-09 (c + d)

-08 2008-09

Plant geometry

10 cm 40.0 40.0 84.4 85.6 173.9 198.3 7.2 9.0 -68.6 -74.7

+60 10 cm 40.0 40.0 97.3 97.7 174.2 199.1 7.5 9.8 -69.6 -76.0

20 cm 40.0 40.0 92.8 93.6 172.7 198.6 6.0 9.3 -70.0 -77.2

SEm+ 0.2 0.2 0.1 0.2 0.2 0.1 - -

CD (P=0.05) 0.6 0.4 0.3 0.6 0.5 0.4 - -

Nitrogen (kg/ha)

71.6 72.0 169.1 197.5 02.4 08.2 -72.0 -80.6

40.0 40.0 92.9 93.7 182.4 206.1 15.7 16.8 -81.0 -85.4

80.0 80.0 110.3 111.3 197.8 216.3 31.1 27.0 -68.2 -67.4

SEm+ 0.2 0.2 0.1 0.2 0.2 0.1

CD (P=0.05) 0.6 0.4 0.3 0.6 0.5 0.4

Anti-transpirants

Control 40.0 40.0 84.0 85.0 174.0 196.0 07.3 06.7 -70.5 73.4

PMA 40.0 40.0 88.7 89.1 176.2 199.4 09.5 10.1 -76.3 79.4

Kaolin 40.0 40.0 93.8 94.7 176.7 200.3 10.0 11.0 -78.4 -83.0

PMA+kaolin 40.0 40.0 98.3 99.7 176.9 204.7 10.2 15.4 -80.9 -91.5

SEm+ 0.5 0.8 0.4 0.6 0.6 0.5

CD (P=0.05) 1.5 2.7 1.2 1.7 2.1 1.3

Initial soil N status (kg/ha) = 166.7 (2007-08) and 189.3 (2008-09) Project on Rape-seed-mustard (Brassica juncea). Udaipur, pp. 43-45.

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