Cauvery Delta Region Of Tamil Nadu Research Articles

INVESTIGATION ON PREVALENCE OF RICE BROWN LEAF SPOT IN CAUVERY DELTA REGION OF TAMILNADU INDIA

Rice is the major food crop in India. Rice is affected by many fungal, bacterial and viral diseases. Among them, Rice brown leaf spot caused by Bipolaris oryze is a important disease which reduces the yield of the crop. The present investigation was carried out to study the prevalence and occurrence of Rice brown spot in Cauvery Delta Region of Tamilnadu. Among the five districts surveyed, the disease incidence was more in Sirkazhi of Mayiladuthurai district which recorded 35.5% incidence. Aananthathandavapuram from Mayiladuthurai recorded second maximum incidence (30.5%). Thiruparaithurai village of Trichy district has recorded lowest Brown leaf spot incidence (18.5%) compared to other areas. Brown spot disease incidence was more in cultivar BPT 5204 and ADT 43 compared to other cultivars. Brown spot incidence was more in milking and maturity stage compare to other stages of rice crop.

Non esterified fatty acid levels in indian cross bred jersey cows under small holder farming systems

Data on Production diseases assessment in Indian dairy cattle is less. The objective of this study was to assess the Non-esterified fatty acids level in three different small holder farms of Cauvery Delta region of Tamilnadu. Sixty cross bred dairy cattle were selected at different levels of lactation in the three farms. Serum samples were analyzed for non esterified fatty acids (NEFA). Mean ± standard deviations of the values were arrived and the data were statistically analyzed. NEFA values of early, mid, late lactation, Far off dry and close up dry cows were 0.39±0.09, 0.24±0.03, 0.19±0.03, 0.18±0.03 and 0.23±0.03mmol/L, respectively. No significant variations were recorded in between the farms. Cows at early lactation had higher NEFA concentrations where as lowest concentrations was observed in Far off Dry cows.