An Asian Journal of Soil Science

N. H. Desai ¹, N. J. Jadhav ², D. M. Patel ²

Affiliations
1 Centre for Agroforestry, Foarge Crops and Green Belt, S.D. Agricultural Universitity, Sardarkrushinagar, Banaskantha (Gujarat), IN
2 Department of Agricultural Chemistry and Soil Science, C.P. College, S.D. Agricultural Universitity, Sardarkrushinagar, Banaskantha (Gujarat), IN

Abstract

A field experiment was conducted during 2002-03 at agronomy Instructional Farm, Sardarkrushinagar to study the effect of industrial sludges and soil conditioners on yield and micronutrient uptake by wheat-pearl millet-green gram cropping system. Application of ETP sludge @ 20 t ha^-1 to wheat crop resulted in significantly higher grain yield of wheat, pearl millet and green gram than control, GS20, ACS20. GS10, ACS10, FA10, FA20, VC10 and FYM10. Maximum uptake of Fe, Mn, Zn and Cu were recorded under application of ETP sludge @ 20 t ha-1 by gain as well as straw of wheat, pearl millet and green gram crop. However, the lowest uptake of all these micronutrients were noticed under application of glycerin @ 20 t ha^-1 in wheat crop on the contrary, the lowest uptake was noticed with control treatment in pearl millet and green gram crops.

Keywords

Micronutrient, Industrial Sludge, Soil Conditioners, Yield, Cropping System.

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N. H. Desai ¹, N. J. Jadav ², C. L. Patel ²

Affiliations
1 Centre for Agroforestry Forage Crops and Green Belt, S.D. Agricultural University, Sardarkrushinagar, Banaskantha (Gujarat), IN
2 Department of Agri. Chemistry and Soil Science, C.P. College of Agriculture, S.D. Agricultural University, Sardarkrushinagar, Banaskantha (Gujarat), IN

Abstract

Laboratory experiment was conducted to find out the effect of different sludges and soil conditioners viz., FYM(FYM10,FYM20), private farm manure (PFM10,FPM20), vermi compost (VC10,VC20), coir pith (CP10,CP20), fly ash (FA10,FA20), ETP sludge(ETP10, ETP20) ammonium chloride sludge (ACS10, ACS20) and glycerin sludge (GS10,GS20) @ 10 and 20 t ha^-1 along with control on soil water diffusivity, moisture content as a function of drying period from saturation to dryness and soil water retention characteristic. Irrespective of sludges and soil conditioners, higher water content was recorded at initial segments of plexiglass columns as compared to later one. However, the soil water diffusivity was progressively decreased from inlet to lateral segments. A given segment of column, incorporation of fly ash @ 20 t ha^-1 recorded higher water content as well as soil water diffusivity followed by VC20, CP20, PFM20, FYM10, PFM10, FYM20 and control under uniform bulk density at 1.50 Mg m^-3. Among different sludges and soil conditioners, incorporation of ETP sludge @ 20 t ha^-1 recorded higher moisture content even after 5^th days of incubation. Similarly, recorded maximum moisture content at all soil water potentials was noticed with ETP sludge. The moisture content was decreased with the increasing period of incubation. The moisture content under all the treatments was decreased with decrease in soil water potentials from -33, -100, -300 and -1500 MPa. Control plots registered higher soil bulk density and infiltration rate as compared to rest of the treatments except glycerin sludge. Incorporation of ETP sludge @ 20 t ha^-1 was found significantly superior over rest of the treatments with respect to moisture content in soil during crop growth.

Keywords

Sludges, Soil Conditioners, Soil Water Diffusivity, Saturation to Dry Ness, Soil Water Retention, Bulk Density, Infiltration Rate, Soil Water Potentials, Soil Moisture Content.

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