Vol. 9 (1) : January-February 2018 issue
Green Farming Vol. 9 (1) : 61-65 ; January-February, 2018
Soil organic amendments and their effects on physical properties of a soil under the rice–wheat system in Jammu, India
I.A. SHAHa1*, B.C. SHARMAa2, A. SAMANTAb3, M. BANOTRAa4, A. VERMAa5 and R. KUMARa6
aDivision of Agronomy, bDivision of Water Management, Sher-e-Kashmir University of Agricultural Sciences and Technology-Jammu, Chatha – 180 009 (Jammu and Kashmir)
1Agronomist *(firstname.lastname@example.org), 2Professor & HOD, 3Senior Scientist, 4Ph.D. Scholar, 5,6Assistant Professor
Subject : Agronomy and Crop Production
Paper No. : P-7004
Total Pages : 5
Received : 27 September 2017
Revised accepted : 19 January 2018
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I.A. SHAH, B.C. SHARMA, A. SAMANTA, M. BANOTRA, A. VERMA and R. KUMAR. 2018. Soil organic amendments and their effects on physical properties of a soil under the rice–wheat system in Jammu, India. Green Farming Vol. 9 (1) : 61-65 ; January-February, 2018
The physical quality of the soil, which creates suitable environment for the availability and uptake of the plant nutrients, is generally ignored. Though the effect of organic manures on soil physical quality has been widely appreciated but that of inorganic fertilizers is studied to a lesser extent. The present study carried out during kharif 2012 to rabi 2013-14 aims to characterize the soil aggregate stability, distribution of organic carbon (C), available nitrogen (N) and productivity of succeeding wheat by the application of green manure crop like dhaincha (Sesbania aculeata), vermicompost and farmyard manure (FYM) in conjunction with inorganic fertilizers in aerobically grown basmati rice in rice–wheat cropping on a sandy loam soil. Macroaggregates (0.25 mm) constituted 20–30% of total water stable aggregates (WSA) and were linearly related (R2 = 0.69) to soil organic carbon content. The incorporation of dhaincha and FYM significantly improved the formation of macroaggregates with a simultaneous decrease in the proportion of microaggregates at all the sampling depths (0–5, 5-10 and 10–15 cm). Macroaggregates had higher C and N density as compared to microaggregates and the improvement was greatest in plots that received both dhaincha and FYM each year this will help in sustainable rice – wheat productivity in the region.
Key words :
Aerobic rice, Organic amendments, Productivity, Rice–wheat cropping, Water stable aggregates.