R. T. Limbasiya , R. M. Patel , B. N. Kolambe , N. S. Patil , B. G. Vashi , D. B. Jadeja

Abstract

A pot culture experiment was conducted to evaluate the effect of salinity and IBA treatment on cuttings of Jatropha curcas L. in relation to sprouting of buds, initial growth parameters, ischolar_maining and survival. The performance of Jatropha curcas L. was better in S_N (Natural soil) and decreased in all salinity levels. The highest per cent sprouting of buds was recorded under S_N (Natural soil) and minimum in S₅ (10 dSm^-1) in IBA treated cuttings, while no sprouting of buds was observed under the salinity level S₅ (10 dSm^-1) in untreated cuttings. IBA treated cuttings have higher survival and ischolar_maining when compared with their respective untreated cuttings (control). The maximum per cent survival and ischolar_maining was observed under natural soil (S_N). The salinity levels of S₃ (6 dSm^-1) and beyond greatly declined the survival and ischolar_maining in IBA treated as well as untreated cuttings (control). Increasing salinity levels also suppressed the growth parameters viz., number of leaves per plant, ischolar_main length, leaf area, and biomass production in IBA treated cuttings as well as untreated cuttings (control). However, the reducing effect was more pronounced in untreated cuttings when compared to IBA treated cuttings. The salinity level of S₃ (6 dSm^-1) and beyond greatly reduced the above parameters in both untreated and IBA treated cuttings. Thus the present study reveals that the untreated cuttings of Jatropha curcas can be planted in the soil up to salinity level of 2 dSm^-1, whereas, if treated with IBA the cuttings can be planted up to a salinity level of 4 dSm^-1.

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S. M. Shedage ¹, N. S. Patil ¹, M. B. Tadel ¹, D. P. Patel ¹

Affiliations
1 College of Forestry Navsari Agricultural University, Navsari, South Gujarat, IN

Abstract

Seedlings of Tectona grandis L. were planted under different salinity levels, viz. normal soil (<4 ECe soil), saline soil (4-8 ECe) and highly saline soil (8-12 ECe) and seedlings were inoculated with azetobactor + arbuscular mycorrhizal (AM) fungi, azospirillum + varbuscular mycorrhizal (AM) fungi and combination of all three. Experiment was repeated for two years and data recorded at the end of each experiment on nutrient content in different plant parts (leaves, stem and ischolar_main), chlorophyll content, ischolar_main colonization and survival per cent. Triple inoculation (azetobactor+ azospirillum+AM) significantly influenced on the nutrient status and survival per cent of teak seedlings as compared to uninoculated seedlings under salt condition, which was followed by dual inoculation of Azospirillum and VAM.

Keywords

Microsymbionts, Salinity, Nutrient, Root Colonization, Survival.

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Swati Shedage ¹, N. S. Patil ¹, V. Solanki ¹

Affiliations
1 College of Forestry, Navsari Agricultural University, Navsari (South Gujarat), IN

Abstract

Seedlings of Eucalyptus L. were planted under different salinity levels Viz. normal soil (<4 ECe soil), saline soil (4-8 Ece) and highly saline soil (8-12 ECe) and seedlings were inoculated with Azetobactor + vesicular-arbuscular mycorrhizal (VAM) fungi, Azospirillum + vesicular-arbuscular mycorrhizal (VAM) fungi and combination of all three. Experiment repeated for two years and data recorded at the end of each experiment on nutrient content in different plant parts (leaves, stem and ischolar_main), chlorophyll content, ischolar_main colonization and survival per cent. Triple inoculation (Azetobactor+Azospirillum+VAM) significantly influenced nutrient status and survival per cent of Eucalyptus seedlings as compared to uninoculated seedlings under salt condition, which was followed by dual inoculation of Azospirillum and VAM.

Keywords

Microsymbionts, Salinity Levels, Nutrient Content, Chlorophyll Content, Root Colonization, Survival Per Cent.

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