9 research outputs found
RESPONSE OF TWO SUNFLOWER (HELIANTHUS ANNUUS L.) GENOTYPES TO VA-MYCORRHIZAL INOCULATION AND PHOSPHORUS LEVELS
The performance of two sunflower genotypes (Morden and MSFH-8) with and without VA-mycorrhizal fungi at three P levels (38, 56 and 75 kg P2O5 ha-1) in vertisol of Dharwad was studied to determine the effect of mycorrhizal inoculation on plant growth, yield and P uptake. The results showed that the VAM inoculation increased sunflower yield (14%), total biomass (16%), oil content (3.1%) and P uptake (30.5%) over uninoculated control. The percent root colonization and chlamydo-spore count decreased with increasing P levels. The total biomass production, seed yield and P uptake of mycorrhizal plants at 38 kg P2O5 ha-1 more than the non-mycorrhizal plants at 75 kg P2O5 ha-1. The biomass and seed yield of mycorrhizal plants at same P level were more than the non-mycorrhizal plants. Mycorrhizal plants of Morden at 38 kg P2O5 ha-1 and MSFH-8 at 56 kg P2O5 ha-1 produced higher seed yield, oil content and total biomass than non-mycorrhizal plants supplied with 75 kg P2O5 ha-1. The results indicated that, VA-mycorrhizal inoculation helps in saving 25 and 50 percent of recommended dose of phosphatic fertilizer (75 kg P2O5 ha-1) in MSFH-8 (single cross hybrid) and Morden (open pollinated variety), respectively.                 Key words: Mycorrhizas/Plant nutrition/Inoculum/Glomus fasciculatum/Helianthus annuus/Phosphorus fertilizers/Metabolism
RESPONSE OF TWO SUNFLOWER (HELIANTHUS ANNUUS L.) GENOTYPES TO VA-MYCORRHIZAL INOCULATION AND PHOSPHORUS LEVELS
The performance of two sunflower genotypes (Morden and MSFH-8) with and without VA-mycorrhizal
fungi at three P levels (38, 56 and 75 kg P2O5 ha
-1
) in vertisol of Dharwad was studied to determine the effect
of mycorrhizal inoculation on plant growth, yield and P uptake. The results showed that the VAM inoculation
increased sunflower yield (14%), total biomass (16%), oil content (3.1%) and P uptake (30.5%) over
uninoculated control. The percent root colonization and chlamydo-spore count decreased with increasing P
levels. The total biomass production, seed yield and P uptake of mycorrhizal plants at 38 kg P2O5 ha
-1
Ă‚Â more than
the non-mycorrhizal plants at 75 kg P2O5 ha
-1
. The biomass and seed yield of mycorrhizal plants at same P level
were more than the non-mycorrhizal plants. Mycorrhizal plants of Morden at 38 kg P2O5 ha
-1
Ă‚Â and MSFH-8 at 56
kg P2O5 ha
-1
Ă‚Â produced higher seed yield, oil content and total biomass than non-mycorrhizal plants supplied with
75 kg P2O5 ha
-1
.Ă‚Â The results indicated that, VA-mycorrhizal inoculation helps in saving 25 and 50 percent of
recommended dose of phosphatic fertilizer (75 kg P2O5 ha
-1
) in MSFH-8 (single cross hybrid) and Morden
(open pollinated variety), respectively.Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Key words: Mycorrhizas/Plant nutrition/Inoculum/Glomus fasciculatum/Helianthus annuus/Phosphorus
fertilizers/Metabolism
RESPONSE OF TWO SUNFLOWER (HELIANTHUS ANNUUS L.) GENOTYPES TO VA-MYCORRHIZAL INOCULATION AND PHOSPHORUS LEVELS
The performance of two sunflower genotypes (Morden and MSFH-8) with and without VA-mycorrhizal fungi at three P levels (38, 56 and 75 kg P2O5 ha-1) in vertisol of Dharwad was studied to determine the effect of mycorrhizal inoculation on plant growth, yield and P uptake. The results showed that the VAM inoculation increased sunflower yield (14%), total biomass (16%), oil content (3.1%) and P uptake (30.5%) over uninoculated control. The percent root colonization and chlamydo-spore count decreased with increasing P levels. The total biomass production, seed yield and P uptake of mycorrhizal plants at 38 kg P2O5 ha-1 more than the non-mycorrhizal plants at 75 kg P2O5 ha-1. The biomass and seed yield of mycorrhizal plants at same P level were more than the non-mycorrhizal plants. Mycorrhizal plants of Morden at 38 kg P2O5 ha-1 and MSFH-8 at 56 kg P2O5 ha-1 produced higher seed yield, oil content and total biomass than non-mycorrhizal plants supplied with 75 kg P2O5 ha-1. The results indicated that, VA-mycorrhizal inoculation helps in saving 25 and 50 percent of recommended dose of phosphatic fertilizer (75 kg P2O5 ha-1) in MSFH-8 (single cross hybrid) and Morden (open pollinated variety), respectively