AJAY, NEELAM AND SATPAL
Department of Agronomy,
Department of G&PB (Forage Section) CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India
*(e-mail: berkesia.neelam@gmail.com)
(Received : 21 February 2026; Accepted : 21 March 2026)
SUMMARY
The present investigation entitled ”Effect of foliar application of nano DAP on the performance of forage sorghum under summer season” was conducted at the Research Farm, Department of Agronomy, CCS Haryana Agricultural University, Hisar during 2024. The soil of experimental field was sandy loam in texture, low in available N (126.5 kg/ha) and medium in P (13.5 kg/ha) & K (248.8 kg/ha). The experiment was laid out in a randomized block design with seventeen treatments i.e. T1: Control (No RDF), T2: RDF (75 kg N + 30 kg P2O5 30 kg K‚ O/ha), T3: 75% N and P + foliar spray of nano DAP at 30 DAS, T4: 75% N and P + foliar spray of nano DAP at 45 DAS, T5: 75% N and P + two foliar spray of nano DAP at 30 and 45 DAS, T6: 50% N and P + foliar spray of nano DAP at 30 DAS, T7: 50% N and P + foliar spray of nano DAP at 45 DAS, T8: 50% N and P + two foliar spray of nano DAP at 30 and 45 DAS, T9: 75% N and P + foliar spray of conventional DAP at 30 DAS, T10: 75% N and P + foliar spray of conventional DAP at 45 DAS, T11: 75% N and P + two foliar spray of conventional DAP at 30 and 45 DAS, T12: 50% N and P + foliar spray of conventional DAP at 30 DAS, T13: 50% N and P + foliar spray of conventional DAP at 45 DAS, T14: 50% N and P + two foliar spray of conventional DAP at 30 and 45 DAS, T15: RDF + foliar spray of water at 30 DAS, T16: RDF + foliar spray of water at 45 DAS and T17: RDF + two foliar spray of water at 30 and 45 DAS and replicated thrice. The crop was sown on 20th March, 2024 and harvested at 80 DAS. The variety of forage sorghum was CSV – 41. Among the different treatments, T17 recorded significantly higher growth parameters i.e. plant height (204.32 cm), number of leaves/plant (13.0), dry matter accumulation/plant (131.47 g) and LAI (6.85). This treatment also recorded highest green fodder (431.2 q/ha) & dry fodder yield (112.0 q/ha) and was statistically at par with the treatments T5, T16, T15 and T2. The highest crude protein content (9.19%), N (1.47%), P (0.202%) and nutrient uptake of N (163.9 kg/ha), P (22.5 kg/ha) were estimated with 75% N & P combined with two foliar sprays of nano DAP @ 4 ml/ L at 30 and 45 DAS (T5). The highest gross (Rs. 86240/ha) and net returns (Rs. 48080/ha) were computed with T17. The highest B:C obtained with T2 (2.28) which was followed by T15, T16 (2.27), T17 (2.26) and T5 (2.04).
Key words: Sorghum, nano DAP, green fodder yield, dry fodder yield and B:C