Fruit yield and nutrient uptake by brinjal due to integrated nutrient management in an Inceptisol

Selvi, D.; Thiageshwari, S.; Santhy, P.; Kannan, B.R.

Journal​ ​of​ ​Maharashtra​ ​Agricultural​ ​Universities 29(2): 220-223


ISSN/ISBN: 0378-2395
Accession: 004169309

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The efficacy of micronutrient with or without organics and biofertilizer on aubergine cv. Coimbatore Vari Kathiri was tested through an on-farm trial conducted in Coimbatore, Tamil Nadu, India, in 1994. Treatments included absolute control, NPK alone, two sources of micronutrients (straight micronutrients (MNS; ZnSO4 and FeSO4) and microfood (MF)) and two application methods (soil application and foliar spray) with organics (composted coir pith (CCP)) and biofertilizer (Azospirillum (Azo)). Yield increases due to application of MF (foliar), MNS (foliar), MF (soil) and MNS (soil) along with recommended dose of NPK were 22.0, 20.4, 19.3 and 18.7%, respectively, over the NPK alone. Both application methods of either MF or MNS with CCP and Azo recorded higher fruit yields than individual application. Yield increases due to combined application of MF (foliar)/MNS (foliar)/MF (soil)/MNS (soil) with CCP and Azo were 34.5, 30.6, 27.2 and 24.0%, respectively, over NPK application alone. N, P and K uptake ranged from 80.9 to 172.2, 7.6 to 14.4 and 81.0 to 134.0 kg/ha, respectively. Foliar applied MF and MNS recorded higher uptake values than their respective soil applications and NPK alone. Zn, Cu, Fe and Mn uptake ranged from 278 to 493 g/ha, 28.6 to 68.2 g/ha, 2.16 to 3.49 kg/ha and 0.48 to 0.89 kg/ha, respectively. N, P and K content of fruits ranged from 2.60 to 3.16, 0.36 to 0.45 and 3.00 to 3.84%, respectively. Zn Cu, Fe and Mn contents in fruits oscillated from 112.8 to 154.4, 28.2 to 46.5, 313 to 401 and 104 to 124 ppm, respectively.