Impact of Foliar Application of Bio Nano P and K and their Conventional Sources on Yield of Maize and Wheat in an Acid Alfisol
Keywords:
Maize, Wheat, Bio Nano P, Bio Nano K, Natural Farming, Yield, Alfisol.Abstract
To assess the effectiveness of bio-nano P and K fertilizer solutions in optimizing respective nutrient requirement in maize-wheat sequence, a field experiment was conducted in an acid Alfisol during 2019-20 at the experimental farm of CSKHPKV, Palampur in a randomized block design comprising fourteen treatments. Specifically, the experiment aimed at evaluating the efficacy of two foliar applications of bio nano P and K (one 30-35 days after germination of crop and second 20-25 days after first spray) in comparison to their conventional sources at 0, 50 and 100 per cent RDF levels of P and K individually and also in combination with 50 and 100 per cent RDF levels of P& K on productivity in maize and wheat crops. Highest grain (52.9 and 33.4 q-1 ha-1) and stover/straw yield (82.1 and 49.4 q-1 ha-1) of maize and wheat, respectively, were observed with treatment where 100 per cent RDF was applied through conventional sources along with two foliar applications of bio nano P and K (T13) whereas lowest grain (19.6 and 16.6 q-1 ha-1) and stover/ straw yield (30.0 13 and 28.1 q-1 ha-1) was observed with natural farming treatment (T14). The treatments P50 (T2) and P0 + BN-P(T4), P100 (T3) and P50 + BN-P(T5) in case of P and K50 (T8) and K0 + BN-K (T9) and K100 (T 3) and K50 +BN-K (T10) were statistically at par with each other. Similarly, treatments P100 K100 (T3) and P50 K50 + BN-P & K (T12) showed statistical similarity, highlighting the effectiveness of foliar bio nano application in optimizing crop nutrient requirement to the extent of 50 per cent of the RDF.Downloads
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