Universal Journal of Agricultural Research Vol. 3(2), pp. 46 - 48
DOI: 10.13189/ujar.2015.030202
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Effect of Surface Fertigation on Nutrient Uptake, Fertilizer Use Efficiency and Economics of Inter - Specific Hybrid Bt Cotton

Bharath Raj H. R ^*, Mukund Joshi , Vishaka G. V
Department of Agronomy, University of Agricultural Sciences, Bangalore

ABSTRACT

A field investigation on Effect of surface fertigation on nutrient removal, fertilizer use efficiency and economics of inter-specific hybrid Bt cotton was carried out at agronomy field unit, UAS, GKVK, Bangalore during kharif 2012. The experiment was laid out in randomized complete block design with 7 treatments and 3 replications involving treatment combinations of 3 splits (T₂ and T₃), 4 splits (T₄ and T₅) and 5 splits (T₆ and T₇) at 75 and 100 per cent dosages of recommended dose fertilizer as compared to recommended dose of fertilizer through soil application. It was observed that significantly higher N, P and K uptake (160.99, 28.57 and 134.87 kg ha^-1, respectively) was recorded in 100 per cent recommended dose of fertilizer with fertigation in 5 splits. The higher nutrient uptake in fertigation treatments was attributed to higher fertilizer use efficiency and nutrient availability in the soil as compared to recommended dose of fertilizer through soil application. Among different treatments, application of 100 per cent recommended dose of fertilizer with fertigation in 5 splits recorded higher net returns (79231 Rs. ha^-1) and B:C ratio (3.41). It is advisable to adopt 5 splits application of all the major nutrients under surface fertigation to achieve higher cotton productivity and increasing B: C ratio, besides higher cost of cultivation.

KEYWORDS
Surface Fertigation, Fertilizer Use Efficiency, Nutrient Uptake, Recommended dose of fertilizer

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Bharath Raj H. R , Mukund Joshi , Vishaka G. V , "Effect of Surface Fertigation on Nutrient Uptake, Fertilizer Use Efficiency and Economics of Inter - Specific Hybrid Bt Cotton," Universal Journal of Agricultural Research, Vol. 3, No. 2, pp. 46 - 48, 2015. DOI: 10.13189/ujar.2015.030202.

(b). APA Format:
Bharath Raj H. R , Mukund Joshi , Vishaka G. V (2015). Effect of Surface Fertigation on Nutrient Uptake, Fertilizer Use Efficiency and Economics of Inter - Specific Hybrid Bt Cotton. Universal Journal of Agricultural Research, 3(2), 46 - 48. DOI: 10.13189/ujar.2015.030202.