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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The field experiment on cotton productivity and leaf reddening as influenced by nutrition management for targeted yield was conducted during growing seasons of 2014-15 and 2015-16 at College of Agriculture Farm, Raichur, Karnataka on medium deep black soil under irrigation. Three yield targets (3, 4 and 5 t kapas yield ha-1) based site specific nutrient management (SSNM) along with four leaf reddening management (LRM) treatments (S1 - Vermicompost @ 2.5 t ha-1 in seed line, S2 - S1 + MgSO4 10 kg ha-1 in seed line, S3 - S1 + MgSO4 25 kg ha-1 in seed line, and S4 - MgSO4 25 kg ha-1 in seed line + foliar nutrition of 1% MgSO4 +19:19:19 + 1% KNO3 trice during flowering, boll development and boll bursting stages) besides recommended control were tested using RCBD. SSNM for 5 t ha-1 yield target and supplementary nutrition of MgSO4 both to soil and to foliage and foliar application of major nutrients (19:19:19 and KNO3) (S4) recorded higher productivity efficiency (0.44 on pooled basis) and lower leaf reddening indices throughout (0.23, 0.37, 0.68 and 1.10 at 90, 105, 120 and 135 DAS, respectively pooled basis), whereas lower productivity efficiency with higher reddening indices were recorded with lowering of nutrition in commensuration with lower yield targets; 3 t ha-1coupled with vermicompost alone (M1S1) had higher indices (0.60, 1.16, 1.53 and 2.02 at 90, 105, 120 and at 135 DAS respectively on pooled basis) throughout among all.