Journal of Applied and Natural Science 7 (1): 165–169 (2015)
Effect of Integrated nutrient management (INM) on growth attributes, biomass yield, secondary nutrient uptake and quality parameters of bhendi (Abelmoschus esculentus L.)
M. Thirunavukkarasu* and T. Balaji
Department of Nano Science and Technology, Tamil Nadu Agricultural University, Coimbatore 641 003 (Tamil Nadu), INDIA
*Corresponding author: E-mail: firstname.lastname@example.org
Abstract : Organic manure from different sources could be an effective substitute of chemical fertilizers.
Therefore, a field experiment was conducted to study the impact of various sources of organic manures viz., sole application
of composted pressmud, vermicompost, sewage sludge and farmyard manure and its combination with various levels of inorganic
fertilizers on growth attributes, biomass yield, yield attributes, secondary nutrient uptake and its available status and quality
parameters of bhendi (A. esculentus (L.) Moench). The results indicated that application of pressmud @ 5 t ha-1 with 50 per
cent recommended dose of fertilizer had recorded the highest calcium and magnesium uptake of 30.9 and 15.4 kg ha-1 respectively
and biomass yield of 2233.2 kg ha-1, In comparison to control, the increases in biomass yield and calcium and magnesium uptake
were 20 and 51 and 136% higher under the same set of treatment combinations . The results revealed that treatment received with
pressmud application @ 5 t ha-1 along with 50 per cent recommended dose of fertilizers registered highest available calcium and
magnesium content of 0.14 and 0.28% respectively. In addition to that, there was an improvement in growth parameters such as plant
height andnumber of branches plant-1 at all the growth stages of crop and also quality attributes viz., crude fibre (10.2%) and
mucilage content (1.56%) were recorded significantly highest by same treatment compared to control (15.0 and 1.2% respectively).
Among the organics, pressmud based inorganic fertilizers application was suitable for higher biomass yield, improvement in quality
parameters and also maintaining the fertility status of the secondary nutrients in soil.
Keywords : Biomass yield, Growth attributes, Pressmud, Quality parameters, Secondary nutrient uptake