Vol. 2, Issue 2 (2018)
Soil physico-chemical properties under target yield approach based fertilizer recommendations in system of rice intensification (SRI)
Author(s): Shreyansh Mittal, Manpreet Singh, Sanjay K Sharma
Abstract: A field experiment was conducted during kharif 2015 Palampur, Himachal Pradesh to study the influence of different approaches of fertilizer application on physico-chemical and chemical properties of soil in SRI. Eight treatments included in this investigation were control, farmers’ practice, general recommended dose, soil test based, yield targets 3.5, 4.0, 4.5 and 5.0 t ha-1 replicated thrice in a randomized complete block design (RCBD). The results revealed that soil test crop response (STCR) approach based fertilizer application significantly increased the available nitrogen (N), phosphorus (P) and potassium (K) status in soil as compared to all the other approaches of fertilizer recommendations. However, the values of soil pH, organic carbon (OC) and DTPA extractable micronutrients were not significantly prejudiced by the different approaches of fertilizer recommendations which was obvious and expected in such a short period of about four months.