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Dindigul District, India

Irulandi S.,Krishi Vigyan Kendra | Ravikumar A.,Agricultural College and Research Institute | Srivara Buddhi Bhuvaneswari S.,Krishi Vigyan Kendra | Chinniah C.,Agricultural College and Research Institute | Samuel S.D.,Regional Coffee Research Station
Journal of Biopesticides | Year: 2012

Effect of organic amendments (farm yard manure, neem cake, mahuva cake) was studied on French bean (variety Sln9; Bush type) during 2006-2007 at Regional Coffee Research Station, Thandigudi. The treatment combination, farm yard manure (FYM) (25 tonnes/ha) + neem cake (NC) (22kg) + mahuva cake (MC) (22 kg) + P (100 kg/ha), FYM (25 tonnes/ha) + NC (45kg) + biofertilizers + P (100 kg/ha) with need based application of neem oil (2%) reduced (by 84.21 and 86.29%) the incidence of stemfly, Ophiomyia phaseoli (Tryon) and pod borer, Lampides boeticus (L.) (by 67.75 and 82.16%); also resulted in higher grain yields and better cost benefit ratios. © JBiopest. Source


Jayakumar M.,Regional Coffee Research Station | Rajavel M.,Meteorological Center | Surendran U.,Center for Water Resources Development and Management
International Journal of Biometeorology | Year: 2016

A study on the variability of coffee yield of both Coffea arabica and Coffea canephora as influenced by climate parameters (rainfall (RF), maximum temperature (Tmax), minimum temperature (Tmin), and mean relative humidity (RH)) was undertaken at Regional Coffee Research Station, Chundale, Wayanad, Kerala State, India. The result on the coffee yield data of 30 years (1980 to 2009) revealed that the yield of coffee is fluctuating with the variations in climatic parameters. Among the species, productivity was higher for C. canephora coffee than C. arabica in most of the years. Maximum yield of C. canephora (2040 kg ha−1) was recorded in 2003–2004 and there was declining trend of yield noticed in the recent years. Similarly, the maximum yield of C. arabica (1745 kg ha−1) was recorded in 1988–1989 and decreased yield was noticed in the subsequent years till 1997–1998 due to year to year variability in climate. The highest correlation coefficient was found between the yield of C. arabica coffee and maximum temperature during January (0.7) and between C. arabica coffee yield and RH during July (0.4). Yield of C. canephora coffee had highest correlation with maximum temperature, RH and rainfall during February. Statistical regression model between selected climatic parameters and yield of C. arabica and C. canephora coffee was developed to forecast the yield of coffee in Wayanad district in Kerala. The model was validated for years 2010, 2011, and 2012 with the coffee yield data obtained during the years and the prediction was found to be good. © 2016 ISB Source


Jayakumar M.,Regional Coffee Research Station | Surendran U.,Center for Water Resource Development and Management | Manickasundaram P.,Tamil Nadu Agricultural University
Communications in Soil Science and Plant Analysis | Year: 2015

A field experiment was conducted to assess the effects of drip fertigation with biofertilizers on growth, yield, water, and fertilizer-use efficiency of Bt cotton. The treatments were comprised of drip fertigation with 75, 100, 125, and 150% of recommended dose of fertilizers (RDF) combined with and without biofertilizers as biofertigation, soil application of 100% RDF, and control. Growth, yield attributes, water, and fertilizer-use efficiency of Bt cotton were significantly influenced by drip fertigation treatments. Application of 150% nitrogen (N)–phosphorus (P)–potassium (K) as drip fertigation combined with biofertigation of liquid formulation of azophosmet at 250 ml (1012 cells ml−1) ha−1 was significantly superior over surface irrigation and soil application of 100% NPK and registered the greatest seed cotton yield of 3395 kg ha−1. The soil fertility status was greater under this treatment when compared to surface irrigation and soil application of fertilizers. It is recommended that drip fertigation of inorganic fertilizers in combination with biofertigation be used as a viable technique to realize the yield potential of Bt cotton and sustenance of soil fertility. © Taylor & Francis Group, LLC. Source


Roobakkumar A.,Regional Coffee Research Station | Samuel S.D.,Regional Coffee Research Station | Balakrishnan M.M.,Central Coffee Research Institute | Sreedharan K.,Regional Coffee Research Station
Entomological News | Year: 2014

Cephalonomia stephanoderis Betrem (Hymenoptera: Bethylidae), a parasitoid of coffee berry borer, Hypothenemus hampei Ferrari (Coleoptera: Curculionidae) were reared in large numbers and released in different coffee growing areas of Pulney Hills, Tamil Nadu, between 2003 and 2007. During surveys from 2003 to 2006 parasitism rates were ranged between 11.36% and 44.88% at release sites. Seven years after the last release, 16% to 45% parasitism was recorded from samples collected from five different areas of Pulney Hills. Source

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