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Scientific Transactions in Environment and Technovation

Research

Scientific Transactions in Environment and Technovation, | 10.56343/STET.116.010.002.002
Year : 2017 | Volume: 10 | Issue: 2 | Pages : 56-60

Efficacy of different aqueous plant extracts on the growth of Alternaria
solani, a foliar pathogen of tomato

Abstract :

Amphibian density is impacted by a multitude of different factors. The potential impact of water hyacinth infestations on the physico-chemical parameters of the aquatic environment, morphology of ponds, density and diversity of amphibians was investigated. Water quality plays a key role in driving the anuran population in aquatic habitat. The water hyacinth significantly affected water quality as well as density of amphibian population in the ponds of Cauvery deltaic regions. Totally 31 ponds were randomly selected using GPS. Water samples were collected once in a month from ponds of three districts. Water quality parameters of the samples such as pH, temperature, salinity, turbidity, TDS, electrical conductivity and dissolved oxygen were determined by standard protocols. Water quality variables from three infestation areas were compared by means of one way analysis of variance (ANOVA). The level of significance was set through Binary Logistic Regression and Multiple ANOVA. The analysis showed that salinity was significantly higher (P<0.05) in water hyacinth infested areas (1.00±0.74) than open water/less infestation areas (0.90±0.55). Similarly the pH was significantly higher (P<0.05) in water hyacinth dense areas (7.71±0.57) than open water/less infestations (7.48±0.43). The temperature was higher in densely infested areas (31.53±0.95) than open water (31.24±1.06) and medium dense or sparse (31.19±1.38) water hyacinth. Therefore it could be concluded that water hyacinth affected the ecology of Cauvery delta ponds. Effective control of water hyacinths of various ponds of deltaic region is very important, in order to conserve amphibians and prevent both ecological and economic loss due to loss of biodiversity.

Keywords:

Anurans, Eichhorniacrassipes, diversity, ponds, water chemistry

Citation: *,

( 2017), Efficacy of different aqueous plant extracts on the growth of Alternaria
solani, a foliar pathogen of tomato. Scientific Transactions in Environment and Technovation, 10(2): 56-60

Mr.Veerapathiran K

Correspondence: M. Magesh


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