International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (1760) Last page : (1769)
Article doi: http://dx.doi.org/10.18782/2320-7051.5551

Effect of Long Term Fertilizers and Organic Manures on Soil Quality and Sustainablity Yield Index in Rice - Rice Cropping System

M. Suresh*, G. Jayasree, M. Srilatha, S. Narender Reddy and G. Kiran Reddy
Dept. of Soil Science & Agricultural Chemistry, College of Agriculture
Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad-500030
*Corresponding Author E-mail: manchikunta.suresh5@gmail.com
Received: 12.07.2017  |  Revised: 23.07.2017   |  Accepted: 24.07.2017  

 ABSTRACT

A long-term experiment was conducted with the objective of assessing the effect of integrated use of organic and inorganic sources of nutrients on properties of soil quality and yield sustainability under Rice –rice crop rotation. A field experiment was conducted during rabi, 2015 and karif, 2016 at Regional Agricultural Research Station, Jagtial (India) on an ongoing long term (16 years) experiment which was initiated in kharif, 2000. Twelve treatments were laid out in randomized block design with four replications. The twelve treatments were 50 % NPK (T1), 100 %NPK (T2), 150 % NPK (T3), 100 % NPK + HW (T4), 100 % NPK + ZnSO4 (T5), 100 % NP (T6), 100 % N (T7), 100 % NPK + FYM (10 t FYM ha-1 in kharif) (T8), 100 % NPK –S (T9), FYM (10 t FYM ha in kharif and rabi) (T10), Control (T11) and Fallow (T12). The long term yield data from 2000-01 to 2014-15 and 2015-16 of both seasons was used to study sustainability yield index which were found to be relatively high 100%NPK + FYM (0.617 and 0.615) followed by 150% NPK (0.615 and 0.605) and FYM, 100%NPK - S (0.610 and 0.598) during rabi and kharif seasons respectively. Soil quality assessment was done by identifying the key indicators using principal component analysis (PCA), soil quality indices (SQI), and relative soil quality indices (RSQI). Results revealed that most of the soil quality parameters were significantly influenced by the management treatments in the experiment. In experiment, during rabi soil quality indices varied from 1.83 to 2.41 across the treatments and during Kharif season soil quality indices varied from 1.74 to 2.50 across the treatments. Nutrient-management treatments played a significant role in influencing the SQI. Among the treatments, 100%NPK + FYM resulted in a greater soil quality index (2.41 and 2.50 during rabi and kharif season respectively) followed by only FYM treatment (2.35 and 2.34 during rabi and kharif season respectively), which was at par with 100%NPK + FYM. The results indicated that the combined use of organic and inorganic fertilizers maintained higher soil quality in the soil.

Key words:  Soil quality index, FYM, Cropping system, Sustainablity yield index, Chemical fertilizers.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Suresh, M., Jayasree, G., Srilatha, M., Reddy, S.N. and Reddy, G.K., Effect of Long Term Fertilizers and Organic Manures on Soil Quality and Sustainablity Yield Index in Rice - Rice Cropping System, Int. J. Pure App. Biosci.5(4): 1760-1769 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5551