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Reclamation of a saline-sodic soil by gypsum and Leptochloa fusca


, : Reclamation of a saline-sodic soil by gypsum and Leptochloa fusca. Geoderma 74(3-4): 207-217

Amelioration of sodic and saline-sodic soils by chemical amendments requires high capital input. Cultivation of salt tolerant grasses may mobilize the native lime (CaCO (sub 3) ) in these soils through root action to substitute the chemical approach. A saline-sodic soil (pH (sub s) =9.1, EC (sub e) =9.8 dS m (super -1) , SAR=103, CaCO (sub 3) =9.4%, CEC=122 mmol (sub c) L (super -1) , texture=sandy clay loam) was experimented for reclamation. Concrete cylinders (60 cm long, 30 cm internal diameter) were used to prepare the soil columns. The bottom of each column was padded with a 5 cm layer of gravel and sand to facilitate leaching. In each lysimeter, soil was added in small increments to obtain a uniform soil column. The soil was packed to a height of 40 cm, making the soil depth in each column 35 cm. Four treatments, one cropped i.e. kallar grass (Leptochloa fusca) and three non-cropped (control, gypsum @50%, and 100% gypsum requirement) were leached with four leaching cycles (LC (sub 1) to LC (sub 4) ) at different time intervals. Canal water (EC=0.28 dS m (super -1) , SAR=0.8) was used for leaching. Two leaching cycles, LC (sub 2) and LC (sub 3) , were completed during the peak growth of kallar grass (summer) and the remaining two, LC (sub 1) and LC (sub 4) , were completed during winter when its growth was very slow. After the completion of LC (sub 4) , soil samples were collected from the lysimeters at 0-15 and 15-30 cm depths. The treatment receiving gypsum at higher rate (100% GR) removed the greatest amount of Na (super +) from the soil columns and caused a substantial decrease in soil salinity (EC) and sodicity (SAR). Performance of the grass treatment in enhancing the leaching of Na (super +) was between the gypsum treatments. Kallar grass removed more Na (super +) during summer than during winter. Effectiveness of the treatments for soil reclamation was in the order; 100% GR>kallar grass>50% GR>control.

US$19.90

DOI: 10.1016/s0016-7061(96)00061-4


Other references

Sano, H., 2002: A new mechanism of COX-2 in inflammation. Ryumachi 42(3): 560-572

Dunkman W.B.; Wilen M.; Franciosa J.A., 1981: Possible adverse effects of long term amrinone administration in heart failure. American Heart Association Monograph (82): IV-307

Suciu, S.; Nanulescu, M., 1983: A case of 10p- syndrome. A new case with partial deletion of the short arm of one chromosome 10 and multiple malformations is reported.

Bergstrom H.; Bernstein K., 1968: Psychic reactions after analgesia with nitrous oxide for cesarean section human barbiturates. Lancet (7567): 541-542

Kobayashi, T., 1978: Discoactinoceras and the discoactinoceratidae new family. Discoactinoceras, which used to be placed in either the Huroniidae or the Polydesmiidae, is quite distinct from them in the growth of the intrasiphuncular stereoplasmic deposits from the actinoceroid to endoceroid type. Because its septal neck is...

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Stroman, G.N., 1948: A roller table holder for use in the determination of certain characters in the cotton breeding program. The table holder is a cylinder simply made of wood which allows any large table to be used rapidly. It is particularly adapted in the cotton breeding program to determine the percent of lint from wts. of lint and seed, the lint index from the perc...

Salvioli, R.A.; Suarez, L.A.; Latina, C.A., 1978: Inbreeding effects on yield and yield components in trichloris pluriflora. The reaction to inbreeding was evaluated in T. pluriflora Fourn, under 2 conditions: (a) sexual offspring-cloned parent, with no competition, and (b) sexual offspring-parent, with competition. In (a), S1 offspring reacted negatively to inbreeding,...

Pikalova, L.D., 1964: Vision Development In Children Operated On For Congenital Cataract. Oftalmologicheskii Zhurnal 19: 566-570

Casey, M.M.; Rogers, R.R.; Jackson, M.J.; Buckley, G.A., 2003: Magnetic stratigraphy of the upper Cretaceous Maevarano Formation -Maastrichtian, Northwestern Madagascar. Journal of Vertebrate Paleontology 23(3 Supplement): 39A, 12 September