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Salvi S.P.,Regional Fruit Research Station | Mule R.S.,Regional Fruit Research Station | Gawankar M.S.,Agriculture Research Station
Pestology | Year: 2016

Maharashtra state is nowadays known as the economic power of the country. Climate change makes agriculture more difficult to sustain with higher frequencies of changing temperature, erratic rainfall, increased salinity as well as a rise in sea level. These phenomena have direct impact on crop yield and quality of produce also. The various weather parameters effect on cashew nut yield. So far few studies were conducted in this direction and none of them indicated that critical periods of nut development during which weather factors play a critical role. A survey was conducted under South konkan region of Maharashtra for the year 2006-07 to 2014-15 with an objective to find out the relationship between the total yield of cashew nut influenced by various weather parameters viz., temperature, relative humidity, rainfall received and number of rainy days. The present study on weather parameters indicated that the rainy days in preceding rainy season proved the immediate determinant of yield in cashew production. The rainy days during May are considerably low and moderately high during June. This situation provides a scope of studies to the role of irrigation to cashew orchard during this particular period by modern methods such as drip irrigation. Source

Gowda B.,Agriculture Research Station | Hall W.,Coventry University
Agricultural Engineering International: CIGR Journal | Year: 2012

Pongamia pinnata is one of the promising tree species suitable for providing oil for biodiesel production. This paper addresses the life cycle energy balance, global warming potential and acidification potential, of a small scale biodiesel system, in rural Karnataka. In addition, the system has also been expanded to generation and use of biogas from seed cake for electricity production and evaluated for its environmental impacts. The environmental impacts have been benchmarked with the life cycle impacts of fossil diesel. The results show that non-renewable energy requirement of Pongamia biodiesel system is twenty-eight times lower than that of fossil diesel. A significant increase in global warming potential (GWP) is indicated inPongamia biodiesel system compared to fossil diesel if wood is used as fuel. GWP would be seven times less if wood is not used as fuel. Acidification and eutrophication potential of Pongamia system was found to be nil. Further, expanding the Pongamia biodiesel system to include biogas production exploits the energy available in the system. It is also observed that one hectare of Pongamia plantation is capable of completely sequestering the CO 2 released during the life cycle with additional sequestration potential up to 1 t CO 2 ha -1. Moreover, the above aspects were significantly superior in Pongamia system when compared to Jatropha biodiesel system. Source

Chaudhary V.,CSSS PG College | Kumar M.,SVBPUA and T | Sharma M.,MD PG College | Yadav B.S.,Agriculture Research Station
Environmental Monitoring and Assessment | Year: 2010

The study was carried out to access the fluoride, boron, and nitrate concentrations in ground water samples of different villages in Indira Gandhi, Bhakra, and Gang canal catchment area of northwest Rajasthan, India. Rural population, in the study site, is using groundwater for drinking and irrigation purposes, without any quality test of water. All water samples (including canal water) were contaminated with fluoride. Fluoride, boron, and nitrate were observed in the ranges of 0.50-8.50, 0.0-7.73, and 0.0-278.68 mg/l, respectively. Most of the water samples were in the categories of fluoride 1.50 mg/l, of boron 2.0-4.0 mg/l, and of nitrate <∈45 mg/l. There was no industrial pollution in the study site; hence, availability of these compounds in groundwater was due to natural reasons and by the use of chemical fertilizers. © 2009 Springer Science+Business Media B.V. Source

Mohan Kumar R.,University of Agricultural Sciences, Dharwad | Nadagouda B.T.,Agriculture Research Station | Hiremath S.M.,Gadag Center
Plant Archives | Year: 2015

A field survey was conducted to study the perception of farmers about maize based cropping system in three villages of Mudhol viz., Mantur, Mugalkod and Sirol of the irrigated tract of Karnataka, India. The study comprises of the socioeconomic background viz., family size, literacy levels, land holdings and income etc. production enquires comprises of detailed production practices viz., sources of irrigation, cropping pattern, live stalk size, maize genotype selection, seed rate, manure, fertilizers and their application timings, sowing methods, spacing adopted. Further, it was noticed from the field survey cent per cent of the farmers of study area were using the cannel water as sources of irrigation, predominant cropping system prevailed in study area was maize and sugarcane based cropping systems, most often preferred genotypes were single cross maize hybrids. From the interaction, it was noticed that farmers were going for the high density planting (5 to 8 kg extra seeds per ha) with the higher levels of nutrient application to the extent of 30 per cent more then recommended for study area and farmers are experiencing the yield of 80-100 q ha-1. Source

Ramesh babu S.,Agriculture Research Station | Meghwal M.L.,Agriculture Research Station
Journal of Agrometeorology | Year: 2015

An investigation was carried out to study the effect of various weather parameters on the occurrence of larva and adult population of Spodoptera litura and their factors for outbreak of this pest in soybean in Banswara, Rajasthan. The moth populations of S. litura were active from August to midOctober and decreased sharply in late October. The peak appearance was observed during SeptemberOctober months and corresponded with peak activity of egg masses and larval population in soybean contributed to the outbreak of this pest during the reproductive stage of the crop. Overall correlation studies confirmed that the fluctuations in the male moth catches of S. litura per pheromone trap is mainly due to weather factors like, maximum temperature, rainfall, sunshine and wind speed. Moth population in pheromone traps will be used as a warning situation indicating the occurrence of larvae in the host for potential attack and to initiate timely management of S. litura in soybean. © 2015 Association of Agrometeorologists. All rights reserved. Source

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