Vol. 7, Issue 4 (2018)

Author(s):
Somendra Nath, Ravindra Kumar Rajput, Shishu Pal Singh, Abhadeep Gautam, Avinash Kumar And Pradeep Rajput

Abstract:
The field experiment was conducted at Agronomy Research Farm of Narendra Deva University of Agriculture and Technology, Kumarganj, Faizabad (U. P.) during Kharif season of 2 consecutive years 2008 and 2009. Twenty one treatment combinations comprised of three levels of fertility (120: 60:60 kg NPK ha-¹, 150: 75: 75 kg NPK ha-1 and 180: 90: 90 kg NPK ha-¹) with seven hybrids (SHP-O1, SHP-02, SHP¬03, SHP-04, SHP-05, SHP-06 and NDRH-2) were executed in split plot design keeping fertility levels in main plot with four replications. The soil of experimental plot was silt loam in texture with low in organic carbon and nitrogen, medium in phosphorus and high in potassium. The crop received normal recommended agronomic and plant protection measures. All the growth characters i.e. plant height, number of tillers and dry matter accumulation increased significantly with increases fertility levels at all the growth stages of the crop. Highest plant height, number of tillers and dry matter accumulation were found with fertility levels N₁₈₀ P₉₀ K₉₀ kg ha-1 witch was at par with N₁₅₀ P₇₅ K₇₅ kg ha-1 and significant superior over N₁₂₀ P₆₀ K₆₀ kg ha-1 at all the growth stages of crop. Maximum plant height, number of tillers and dry matter accumulation were recorded with hybrid SHP-04 which was at par with hybrid NDRH-02. At harvest plant height was recorded (133.97 and 135.72 cm), number of tillers (455.14 and 457.00 m¬-2) and dry matter accumulation (1521.18 and 1569.61gm-2) with hybrid SHP-04. Grain yield increased with increase in fertility levels and highest grain yield (65.36 q ha-1 and 67.54 q ha-1) were recorded under highest fertility level of N₁₈₀ P₉₀ K₉₀ kg ha-¹ (Table-I), which showed an increase of 8.9 and 9.9% grain yield over N1₂₀ P₆₀ K₆₀ kg ha-1 and remained at par with N₁₅₀ P₇₅ K₇₅ kg ha-1 during both of the years