Effect of Chlor�alkali solid waste effluent on NPK content in Grain of a little millet crop

K. L. Barik

Volume : VI, Issue : VIII, August - 2016

Effect of Chlor�alkali solid waste effluent on NPK content in Grain of a little millet crop

K. L. Barik

Abstract :

The little millet (Panicum sumatrense Rath ex. Roem and Schult) crop variety SS. 81–1, exposed to chloralkali solid waste effluent @ 100 g m–2 (treatment – 1),200 g m –2 (treatment – 2), 300 g m–2 (treatment – 3) and 400 g m–2 (treatment – 4) was studied in vivo at the Agriculture Research Station, Ankuspur in the District of Ganjam, Odisha at an interval of 15 days starting from 30 days after sowing (DAS) till harvest of the crop following the ICAR technology proposed by Seetharam (1994) with little modification depending upon the soil condition and climate of the locality. The nitrogen, phosphorus and potassium content in grain were determined following the methods proposed by Misra (1968), Yoshida et. al. (1976) and Chapman (1976) respectively. The percentage of nitrogen showed almost identical value in control, treatments – 1,2 and 3. The percentage was found to be less in treatment – 4. Similar trend of results was also observed in case of phosphorus and potassium contents. The percentage of NPK in control and all treatments showed high significant F value (p ≤ 0.001) for nitrogen and potassium whereas a very little variation was seen in case of phosphorus content. However, the analysis of variance test for control, treatments – 1, 2 and 3 with regard to percentage of NPK did not show significant variation. This indicates that the concentration of solid waste applied in treatment – 4 was, perhaps, higher than the tolerance limit of the crop. Besides, the precipitation, atmospheric temperature, relative humidity, solar insolation, soil characteristics, soil microbes, etc. do play vital role in variation of NPK content of grain of the crop plant.