Rhizosphere Effect of Kharif Crops on Phosphatases and Dehydrogenase Activities in a Typic Haplustert

Abstract

In recent years phosphorus crisis is emerging at global level, every country in the world searching for alternative sources and management options for increasing its supply and use efficiency. Increasing cost of cultivation due to phosphatic fertilizers, attracting our mind towards it. In this experiment it was focused on effect of major kharif crops (maize, soybean, sorghum, pearl millet, finger millet and rice) on phosphatases and dehydrogenase activities in soil at different crop growth periods (30, 50, 75, 90 days after sowing and at crop harvest). Acid phosphatase activity varied crop wise and also at different crop growth periods. The maximum acid phosphatase activities were observed at 75 DAT in rice (0.206 mg PNP/g h), 90 DAS in sorghum (0.194 mg PNP/g h) and pearl millet (0.201 mg PNP/g h), 50 DAS in soybean (0.127 mg PNP/g h), and 30 DAS in maize (0.154 mg PNP/g h) and, 50 DAS as well as 75 DAS in finger millet (0.180 mg PNP/g h), respectively. But alkaline phosphatase activities were maximum at 75 days after sowing in all the crops i.e. sorghum (0.533 mg PNP/g h), soybean (0.465 mg PNP/g h), rice (0.440 mg PNP/g h), maize (0.538 mg PNP/g h), pearl millet (0.546 mg PNP/g h) and finger millet (0.530 mg PNP/g h), respectively. The dehydrogenase activities were also higher in 75 days after sowing in all the crops. These enzyme activities associated with higher availability and uptake of phosphorus.

Response of Rhizobium-Faba Bean Symbiosis System to Rhizobacterial Inoculation and Arbuscular Mycorrhizal Fungi under Graded Levels of Natural Rock Phosphate in Sandy Soil

“…Apparently, rhizosphere phosphatase and dehydrogenase activity tends to be higher because of increased microbial numbers in the rhizosphere and the excretion of plant root enzymes. These enzyme activities associated with higher availability and uptake of nutrients, particularly phosphorus in plants (Šarapatka, 2002 andDotaniya et al, 2014).These results are in the same line with previous studies confirming a positive impact of rhizobia with PGPR and AM-fungi activities on soil quality by increasing the activity of soil enzymes (Prasad et al, 2012;Othman andTamimi 2016& Mouradi et al, 2018).…”

Influence of Ammonium Molybdate on Enzymatic Activity and Nodulation in Pigeonpea Grown on Vertisol

“…The research findings confirmed with Dotaniya et al, (2014) observed that different crop growth stages showed different amount of dehydrogenase activity in soil, it might be due to secretion of root exudates and biochemical changes in plant system. More microbial activities increased the Dehydrogenase enzymatic activity in the rhizosphere, due to more availability of food materials for its growth.…”

“…The results supported by the findings of Naseby et al, (2000) stated that the acid phosphatase activity was more dependent upon the nutritional status of the plant. Dotaniya et al, (2014) confirmed that different crop growth stages showed different amount of acid phosphatase activity, it might be due to secretion of root exudates and biochemical changes in plant system. Similar findings confirmed by Kaleeswari (2007).…”

Spatio-Temporal Variability of Soil Beta-glucosidase Activity at the Arable Field Scale

“…The potential activity of β-glucosidase in studied arable field showed significant seasonal changes patterns and was significantly higher in April than in August in both study years. Seasonal variation of enzymatic activity could be associated with the different stages of plant growth (Dotaniya et al 2014). In our study, increased BG activity was observed during the intensive growth of winter wheat (April 2007) and winter rape (April 2008).…”