Browsing by Author "Venugopalan, K"

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Crop weather relationship of rainfed banana under different times of planting
(Department of Agronomy, College of Horticulture, Vellanikkara, 1990) Venugopalan, K; Balakrishna Pillai, P
An experiment was conducted at the College of Horticulture, Vellanikkara, Kerala Agricultural University during December 1986 to July 1988 to study the crop weather relationship of rainfed banana under different times of planting. The experiment was conducted in randomised block design with seven times of planting (1st week of December, 1st week of January, 1st week of February, 1st week of March, 1st week of April, 1st week of May, and 1st week of June) and the treatments were replicated three times. Observations on all weather parameters and soil temperatures were recorded daily. Crop growth characters like height of pseudostem, girth of pseudostem, number of leaves and leaf area at various stages of growth, sucker production at shooting and harvest, and the days taken from planting to shooting, shooting to harvest and planting to harvest were recorded. Yield characters like bunch weight,length of bunch, weight of hand, number of hands, number of fingers per bunch, number of fingers per hand, length of finger and girth of finger were recorded. The various fruit quality characters like total soluble solids, reducing sugars, non-reducing sugars, total sugars, acidity and sugar acid ratio were recorded. The total crop growth period for all the treatments included two dry seasons. The general pattern of weather during the 1987-'88 dry season was better compared to that of 1986-'87. The highest soil temperature at any depth and time were, observed in April during 1987 and in March during 1988. Generally, December recorded the lowest soil temperatures The time of planting greatly influenced all the growth, yield and quality characters. At early stages, late plantings generally recorded taller plants with more girth, number of leaves and leaf area. The time of planting had a significant influence on the sucker production at harvest. The duration from shooting to harvest was significantly influenced by time of planting and the last two plantings took comparatively more time for fruit development.
Nephroprotective effect of Aerva lanata (Cherula) and Boerrhavia diffusa (* Thazhuthama) in rats
(Department of Pharmacology and Toxicology, College of Veterinary and Animal Sciences,mannuthy, 2003) Fakrudeen Ali Ahamed, N; Venugopalan, K
Studies on the Effect of Corticosteroids, Neostigmine and Calcium in Cobra Venom (Naja naja) Intoxication
(Department of Veterinary Pharmacology and Toxicology,College of Veterinary and Animal Sciences, Mannuthy, 1975) Venugopalan, K; Nair, K P D
Tranquilizing property of Clitoria ternatea Linn. (Shankupushpam), Acorus calamus Linn.(Vayampu) and Vitex leucoxylon Linn.(Atta nocchi) in rats
(Department of Pharmacology and Toxicology, College of Veterinary and Animal Sciences, Mannuthy, 2001) Suresh N Nair; Venugopalan, K
The study was conducted in sixty four adult albino rats of either sex to assess tranquillizing property of alcoholic extract of whole plant of Clitoria ternatea, roots and rhizomes of Acorus calamus and leaves of Vitex leucoxylon at two dose levels of 250 mg/kg and 500 mg/kg of body weight and compare the effect to the standard tranquillizer chlorpromazine at dose rate of 7 mg/kg. The control group was given gum acacia. The dose levels of these drugs were as follows Plants Amount of Extract (mg/kg) Clitoria ternatea 250(0 I) 500(02) Acorus calamus 250(03) 500(04) Vi/ex leucoxylon 250(05) 500(06) Chlorpromazine 7(07) Control (gum acacia) 7mllkg(08) Level of tranquillization was measured using three parameters (l) depression of spontaneous motor activity, measured using actaphotometer (2) depression of forced locomotor activity measured by decrease in time of permanence in a rota-rod and (3) decrease in aggressive behaviour, measured by aggressive behaviour test score. Haematological parameters like total erythrocytic count, total leucocytic count, differential leucocytic count and haemoglobin percentage were determined to assess any change in haemogram by these drugs. The results of present study were as follows. Clitoria ternatea possess maximum tranquillizing property among the three. At 250 mg/kg it produced significant depression of spontaneous motor activity and forced locomotor activity than control but less than the standard drug. At 500 mg/kg it produced almost similar effect, as standard at certain time intervals but altogether the effect was less than the standard. Aggressive behaviour was also reduced at both dose rates. Clitoria ternatea at 500 mg/kg was more effective than Clitoria ternatea 250 mg/kg. Acorus calamus follows Clitoria lernatea in producing tranquillization. At 250 mg/kg as well as 500 mg/kg dose rates it produced significant depression of spontaneous motor activity, forced locomotor activity and aggressive behaviour. Acorus calamus at 500 mg/kg was more effective than Acorus calamus 250 mg/kg . Vitex leucoxylon possess least effect among the three in producing tranquillization. But at 250 mg/kg as well as 500 mg/kg dose rates it produced significant depression of spontaneous motor activity, forced locomotor activity and aggressive behaviour. Vitex leucoxylon at 500 mg/kg was more effective than Vitex leucoxylon 250 mg/kg. Haematological studies revealed no significant change in haemogram by any of the plant drugs. The exact mechanism of tranquillization by these plants and their possible toxicities needs further detailed study