Nanoscience coupled with nanotechnology emerged as possible cost-cutting approach to prodigal farming and environmental clean-up operations. Hence there is a need for a more innovative fertilizer approach that can increase the productivity of agricultural systems and more environmental friendly than synthetic fertilizers. The trial was laid out in randomized complete block design with 11 treatments in three replications. The field experiment was carried out at Main Agricultural Research Station, University of Agricultural Sciences, Raichur during Kharif seasons of 2019 and 2020. In this research, we studied the recent development and potential benefits derived from the use of nanofertilizers (NFs) in modern agriculture. Nanofertilizers facilitate slow and steady release of nutrients, thereby reduce the loss of nutrients and enhance the nutrient use efficiency. In the present study, the nanofertilizers such as IFFCO nanonitrogen (nano N), IFFCO nanocopper (nano Cu), IFFCO nanozinc (nano Zn) and IFFCO sagarika were sprayed to the maize crop in different combinations with recommended dose of fertilizers. Among the different combinations of nanofertilizers with recommended dose of fertilizers the treatment T11 [50% N, 100% PK, 0% Zinc + 2 sprays of IFFCO nano N (4ml/l) mixed with IFFCO Sagarika (2 ml/l)] showed significant effect on the growth and yield parameters with maximum yield of 58.90 q/ha and highest B:C of 2.99. Whereas, treatment T10 [50% N, 100% PK, 0% Zinc + 2 sprays of IFFCO nano N (4ml/l) mixed with nano Zn (2 ml/l) and IFFCO nano Cu (2ml/l)] was found superior with regard to management of Turcicum leaf blight disease with minimum of 18.20 per cent severity.

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A field experiment was conducted during kharif, 2015-16 at Agricultural College Farm, Raichur to ‘standardize fertigation technology for higher productivity of transplanted pigeonpea [Cajanus cajan (L.) Millsp.] on vertisols’ in the north-eastern dry zone of Karnataka. The results revealed higher number of pods (693.31) seed weight (12.16 g plant-1) stalk (5301 kg ha-1) and seed yields (3340 kg ha-1) with drip fertigation of recommended N and P2O5 (25:50 kg ha-1) in five splits using water soluble fertilizers (WSF) compared to other drip fertigation of water soluble and normal fertilizers at different levels of splits. Whereas significantly lower number of pods, seed weight and yield attributes were recorded with normal practice of soil application of commercial fertilizers without irrigation. Application of water soluable fertilizer (WSF) at 100 per cent RDF in 5 splits through drip method of irrigation also recorded higher gross returns (Rs.1,83,700 ha-1), net returns (Rs. 1,41,983 ha-1) and BC ratio (4.40) compared to all other treatments.