Vol. 7, Issue 3 (2019)
Performance of pea (Pisum sativum L.) with residual phosphorus in phytoremediated heavy metal polluted soil of Jaintia Hills, Meghalaya
Author(s): Vanlalmalsawmi Sailo and Sanjay-Swami
Abstract: Due to extensive coal mining, large areas of Jaintia Hills district of Meghalaya had turned into heavy metal polluted land, creating unfavourable condition for plant growth. Owing mostly to existing acidity related phosphorus stress, average crop productivity in acid soil regions like Meghalaya is very low, that further dropped coupled with heavy metal pollution in these soils. In acid soils, the residual effects of P fertilizer can persist for as long as 5–10 years (or more), depending on the initial P fertilizer rate applied, crop removal and soil buffering capacity, therefore, a pot culture experiment was carried out during rabi 2017-18 utilizing the phytoremediated soil by maize (Zea mays) to assess the performance of pea (Pisum sativum L.) cv. Arkel with eleven residual phosphorus levels applied to maize crop viz. 0, 10, 20, 30, 40, 50, 60, 60, 80, 90 and 100 mg kg-1 soil under completely randomized design and replicated thrice. The experimental results revealed that plant height, number of pods plant-1 and number of seeds pod-1 of pea is markedly increased with the increasing levels of residual P up to the highest level of residual P. The lowest plant height (25.50 cm), number of pods plant-1 (3.03) and number of seeds pod-1 (2.9) was observed under no residual P which significantly improved by 39%, 76% and 56%, respectively in the highest residual P (100 mg P kg-1 ). Similarly, the seed and straw yield of pea significantly and markedly increased with the increasing level of residual P. The highest seed (16.8 g) and straw yield (44.24 g) was observed under highest residual P, which were 11 and 10 fold more in comparison to that obtained with no residual P. It may be concluded from the present investigation that the increasing soil available P maintained by higher P application rates for preceding phytoremediating crop may efficiently be utilized to phytoremediate the remaining heavy metals contents of the coal mined heavy metals polluted soil and almost normal yield levels of pea cv. Arkel can be achieved with 100 mg kg-1 soil of residual P.
Pages: 3270-3273 | 437 Views 81 Downloads
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How to cite this article:
Vanlalmalsawmi Sailo, Sanjay-Swami. Performance of pea (Pisum sativum L.) with residual phosphorus in phytoremediated heavy metal polluted soil of Jaintia Hills, Meghalaya. Int J Chem Stud 2019;7(3):3270-3273.
