Integrative Soil Application of Humic Acid and Sulfur Improves Saline Calcareous Soil Properties and Barley Plant Performance

Field experiments were conducted with rice (ADT-39) during the wet Kharif season (July- October 2001) at two locations, the Tamil Nadu Rice Research Institute (TRRI) farm, Aduthurai (Vertisol) and the Agricultural Research Station (ARS) farm, Pattukkottai (Alfisol), representing the old and new delta areas of the Cauvery, respectively. The same set of treatments was followed in both soils. The treatments consisted of the recommended NPK fertilizer application at 75% and 100% alone, and 10 or 20 kg ha-1 humic acid (HA) in combination with NPK fertilizers as soil application, besides an integrated method involving soil application, root dipping and foliar spraying with humic acid and NPK fertilizers. initial soil samples from the experimental fields were analysed for physical, physico-chemical and chemical properties. Surface soil samples were collected at critical growth stages and analysed for various available nutrients. The results of the field experiments revealed that the application of humic acid along with inorganic fertilizers led to higher soil nutrient availability at all the growth stages of rice. Similar results were obtained in both Vertisol and Alfisol. The present investigation concluded that the best treatment for soil nutrient availability was 10 kg ha-1 HA (soil application) + 0.1% HA foliar spray (twice) + 0.3% HA root dipping + 100% NPK, which was on par with the treatment involving 20 kg ha-1 HA (soil application) + 100% NPK compared to the other treatments.

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Combined effects of clay immobilized Azospirillum brasilense and Pantoea dispersa and organic olive residue on plant performance and soil properties in the revegetation of a semiarid area

The Science of The Total Environment ◽

10.1016/j.scitotenv.2013.07.012 ◽

2014 ◽

Vol 466-467 ◽

pp. 67-73 ◽

Cited By ~ 20

Author(s):

Mauricio Schoebitz ◽

Carmen Mengual ◽

Antonio Roldán

Keyword(s):

Soil Properties ◽

Azospirillum Brasilense ◽

Plant Performance ◽

Combined Effects ◽

Semiarid Area ◽

Pantoea Dispersa ◽

Olive Residue

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Short term effect of some methods for improving soil structure in red-brown earth soils of the northern irrigation areas, Victoria

Australian Journal of Experimental Agriculture ◽

10.1071/ea9740689 ◽

1974 ◽

Vol 14 (70) ◽

pp. 689 ◽

Cited By ~ 5

Author(s):

AH Mehanni

Keyword(s):

Organic Matter ◽

Soil Properties ◽

Soil Structure ◽

Exchangeable Cations ◽

Term Effect ◽

Plant Performance ◽

Compacted Clay ◽

Short Term ◽

Mechanical Methods ◽

Biological Methods

Deep ripping, deep ripping with mixing, adding gypsum or organic matter, and the use of deep rooted plants such as lucerne had some effect in improving the structure of a Lemnos loam profile with a compacted clay subsoil. Measures of plant performance and soil properties showed the effects of mechanical methods and chemical or biological methods were independent of one another. The greatest effect was from the addition of gypsum which changed the balance of the exchangeable cations and substantially increased the aggregation of the soil.

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