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Accueil du site → Master → Inde → 2016 → EFFECT OF SALINE WASTE WATER IRRIGATION ON GROWTH, SURVIVAL AND PHYSIOLOGICAL RESPONSE OF ORNAMENTAL FOLIAGE PLANTS

Sri Konda Laxman Telangana State Horticultural University, Mulugu, (2016)

EFFECT OF SALINE WASTE WATER IRRIGATION ON GROWTH, SURVIVAL AND PHYSIOLOGICAL RESPONSE OF ORNAMENTAL FOLIAGE PLANTS

RENJU S NAIR

Titre : EFFECT OF SALINE WASTE WATER IRRIGATION ON GROWTH, SURVIVAL AND PHYSIOLOGICAL RESPONSE OF ORNAMENTAL FOLIAGE PLANTS

Auteur : RENJU S NAIR

Université de soutenance : Sri Konda Laxman Telangana State Horticultural University, Mulugu, Siddipet (Dist.), Telangana

Grade : Master of Science (MS) 2016

Résumé partiel
The present investigation entitled “Effect of saline wastewater irrigation on growth, survival and physiological response of ornamental foliage plants” was carried out at College of Horticulture, Rajendranagar, Hyderabad during the year 2015-16. The twelve foliage species viz., Aralia, Schefflera, Leucophyllum, Dracaena, Cordyline, Coleus, Graptophyllum, Croton, Philodendron, Pleomele, Red bog lily and Chlorophytum were selected for screening of salinity in wastewater. Each of the foliage plant species was imposed with four irrigation treatments consisting of a) tube well water (control-T1), b) 100% wastewater (T2), c) Blending tube well and wastewater in 50:50 ratio (T3) d) Leaching with tube well water after two wastewater irrigation events (T4). The wastewater was collected from seepage of Kattedan industrial area. The experiment was laid out in Factorial CRD in pot culture replicated thrice. The observations were recorded on the plant growth, survival, visual quality and physiological responses to wastewater irrigation. Further the nutrient content of leaves in different treatments and salt build up in soil was analyzed at the end of the experiment. The preliminary analysis of water samples in each of the treatments revealed that wastewater contained higher levels of EC, pH, TDS, Cl, SAR, RSC when compared to tube well water (control) and was categorized as saline wastewater. The wastewater also contained higher amounts of nutrients like N, P, K and micronutrients. The analysis of soil leachate collected from plants flushed with tube well water after two wastewater irrigations (T4) revealed higher levels of EC and pH than tube well water (control). Significant variation in the growth parameters was observed among the foliage plant species in different irrigation treatments.

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