Response of wheat (Triticum aestivum) genotypes to seed rates on dryland

limited and adequate water supply. Indian

Mahajan, A. K.,Dubey, D. P., Namdeo, K. N. and Shukla, N. D. 1991. Response of late sown wheat to seed rates and seed soaking sprouting. Indian Journal ofAgronomy 36 (2) :288-291.

Singh, R, D., Dhiman, S. D. and Sharma, H. C. 1990.

Journal ofAgronomy 36 (2) :290-293.

Vaishya, R. D. and Singh, V. 1981. Effect of seed rate, ' spacing and nitrogen on yield and uptake of nitrogen on late sown wheat. Indian Journal of Agronomy 26 (1) :53-58.

Indian J. Agron. 38 (2) :289-291 (June 1993)

Effect of seed rate, nitrogen and sowing method on yield of late-sown wheat (Triticum aestivum)

RAM PAUL SHARMA ANDC. V. S. MALIK

Chaudhav Charan Singh Havana Agricultural University, Hisar 125 004

Received: June 1992

An experiment was conducted during the winter season of 1986-87 at Hisar, to study the effect of seed rate, nitrogen level and sowing method on yield of late wheat (Triticum aestivum L. emend. Fiori & Paol.). The soil was sandy loam having 122, 12 and 368 kgha available nitrogen, phosphorus and potassium respectively with pH 7-9. Two seed rates (110 and 137.5 kgha), 2 N levels (120 and 150 kgha) and 4 methods of sowing (22 cm line sowing, 15 cm line sowing, 22 cm cross-sowing and 15 cm cross-sowing) were tested in randomized block design with 3 replications. The sowing was done on 16 December 1986. Four irrigations (1 pre-sowing and 3 after sowing) were given. Rainfall received during crop period was 70.0 mm.

See@ rate and N level did not affect the yield attributes and yield of wheat ('WH 291') under late-sown condition (Table 1). Though the yield was slightly higher with higher seed rate (137.5 kgha) over less seed rate (110 kgha), the difference was not significant. Moreover, higher seed rate and N level decreased the harvest index. The highest grain yield was obtained with 22 cm cross-sowing owing to more effective tillers, weight of ear, number of fertile spikelets and number of grainslear. This increase in yield was 11.9, 4.6 and 13.3% higher over 22 cm line sowing, 15 cm line sowing and 15 cm cross-sowing. However, it was significantly higher to only 22 cm line sowing and 15 cm cross-sowing. The harvest index was also higher with 22 cm cross-sowing. Cheema et