Abstract
A field experiment was conducted at regional research station, Bawal, CCS HAU, Hisar during Rabi 2015-16 to study the response of late sown Indian mustard (Brassica juncea L.) to different dose of fertilizer and crop geometry. The experiment was conducted in split-plot design with four fertilizer dose viz. 70% of the recommended dose of fertilizer (RDF), 85% RDF, 100% RDF, 115% RDF in main plot and six crop geometry, viz. 30 cm x 10 cm, 25 cm x 15 cm, 30 cm x 15 cm, 25 cm x 20 cm, 30 cm x 20 cm and 25 cm x 25 cm in sub plots. The results revealed that numbers of primary and secondary branches per plant were significantly higher 115% RDF than 70% RDF, but it was at par with 85% and 100% RDF at all stages of crop growth. Wider crop geometry of 25 cm x 25 cm recorded significantly higher number of primary and secondary branches than narrow crop geometry (30 cm x 10 cm) at all growth stages of crop. Highest oil content was obtained in crop geometry of 30 cm x 10 cm along with application of 70% RDF, whereas, highest protein content was recorded in crop geometry of 25 cm x 25 cm along with application of 115% RDF. Late sown Indian mustard at crop geometry of 25 cm x 15 cm along with application of 85% RDF recorded highest water use efficiency however, highest consumptive use of water was recorded in 25 cm x 25 cm crop geometry along with application of 115% RDF.
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