Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Effect of foliar nutrition on dry matter production at final harvest (g plant -1 ) Crop Growth
Rate, CGR (g m -2 day -1 ), nodule fresh weight (g plant -1 ), number of pods per plant and B:C
Treatment
ratio
Dry matter
production at
final harvest
T 1 : RDF (½ N, full P and K basal and ½ N at 20 DAS) 24.69 1.53
T 2 : RDF + 0.5% 19:19:19 at 45 DAS 35.28 2.23
T 3 : RDF + 0.5% 19:19:19 at 45 & 60 DAS 29.55 1.68
T 4 : RDF + 0.5% 19:19:19 + 0.05% ZnSO 4 at 45 DAS 31.65 1.78
T 5 : RDF + 0.5% 19:19:19 + 0.025% solubor at 45 DAS 39.51 2.26
T 6 : RDF + 0.5% 19:19:19 + 0.05% ZnSO 4 + solubor 0.025% at 45 DAS 34.28 2.12
T 7 : RDF + 0.5% 19:19:19 + 0.05% ZnSO 4 + solubor 0.025% at 45 DAS +
0.5% 19:19:19 at 60 DAS
B: C
ratio
30.11 1.76
T 8: RDF + 0.5% KNO 3 at 45 DAS 37.52 2.07
T 9 : RDF + 0.5% KNO 3 at 45 & 60 DAS 32.60 1.69
T 10 : RDF + 0.5% KNO 3 + 0.05% ZnSO 4 at 45 DAS 33.95 1.81
T 11 : RDF + 0.5% KNO 3 + 0.025% solubor at 45 DAS 35.41 2.12
T 12: RDF + 0.5% KNO 3 + 0.05% ZnSO 4 + solubor 0.025% at 45 DAS 35.61 1.90
T 13 : RDF + 0.5% KNO 3 + 0.05% ZnSO 4 + solubor 0.025% at 45 DAS +
0.5% KNO 3 at 60 DAS
SEm (±) 1.34
CD (0.05) 3.925
Conclusion
36.89 1.88
Supplementation of major and micro nutrients through foliar feeding at 45 DAS avoided
physiological stresses and contributed to higher pod yield in foliar nutrition treatments.
Application of N, P, K, Zn and B was possible through foliar application at lower cost compared
to individual soil application of these nutrients. Hence foliar nutrition is a key to INM in bush
vegetable cowpea.
References
Das, S., Pareek, N., Raverkar, K.P., Chandra, R and Kaustav, A. 2012. Effectiveness of micronutrient
application and Rhizobium inoculation on growth and yield of Chickpea. Int. J. Agric. Environ.
Biotech., 5(4): 445- 452.
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
505 | Page