Browsing by Author "Mathew, A.C."
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Item Aquaculture in homestead coconut gardens of Kerala(2007-02-08) Vidhan Singh, T.; Hegde, M.R.; Mathew, A.C.; Swamy, K.G.N.Item Avenues of value addition in Coconut, Arecanut and Cocoa(2022) Manikantan, M.R.; Shameena Beegum; Pandiselvam, R.; Ramesh, S.V.; Mathew, A.C.Item Central composite design, Pareto analysis, and artificial neural network for modeling of microwave processing parameters for tender coconut water(2022-01-01) Pandiselvam, R.; V. Prithviraj; Manikantan, M.R.; Shameena Beegum; Ramesh, S.V.; Sugatha Padmanabhan; Anjineyulu Kothakota; Mathew, A.C.; Hebbar, K.B.; Amin Mousavi KhaneghahPolyphenol oxidases (PPO) and peroxidases (POD) are the major enzymes that affect the quality of tender coconut water (TCW). Advanced thermal treatment such as microwave treatment has the potential for the inactivation of food enzymes. The experiments were conducted at three different microwave power levels (450, 600, and 900 W) and five different exposure times (70, 80, 90, 100, 110, and 120 s). The modeling and optimization of process parameters were done using a central composite design and artificial neural network. The microwave power level of 600 W for 120 s exposure time was suitable for enzyme inactivation with minimal quality loss. Optimized treatment has pH = 5.02, total soluble solids (TSS) = 5.68 °Brix, turbidity = 12.51 NTU, titratable acid (TA) = 0.07% of malic acid, PPO = 0, POD = 0, phenolic content = 37.238 mg GAE/L and overall acceptability (OA) = 7.5. These results confirmed that microwave treatment could be the potential alternative to conventional thermal treatment for processing tender coconut water.Item Characteristics of coconut oil blended with sunflower oil and mustard oil(2009) Madhavan, K.; Naresh Kumar, S.; Mathew, A.C.; John GeorgeThe studies suggested that balanced oil can be formed by suitably blending CNO with other PUFA or MUFA oils so that it can contain all essential components required for the human health.Item Characteristics of coconut oil blended with sunflower oil and mustard oil(2009) Madhavan, K.; Naresh Kumar, S.; Mathew, A.C.; John GeorgeThe studies suggested that balanced oil can be formed by suitably blending CNO with other PUFA or MUFA oils so that it can contain all essential components required for the human health.Item Coconut based Mixed Cropping and Integrated Farming system for Realizing Higher Income(2022-02) Thamban, C.; Subramanian, P.; Mathew, A.C.Item Coconut chips:a healthy non-fried snack food(2015-06) Manikantan, M.R.; Arumuganathan, T.; Arivalagan, M.; Mathew, A.C.; Hebbar, K.B.Item Coconut climbing methods and devices: A participatory analysis of constraints and strategies(2011) Thamban, C.; Mathew, A.C.; Muralidharan, K.; Subramanian, P.; Vidhan Singh, T.; Madhavan, K.Socio-economic characteristics, extent of knowledge about integrated management of selected pest and diseases of coconut and technical efficiency of mechanical climbing devices were analysed in a study conducted among 87 coconut climbers in Kasaragod District. Matrix scoring, one of the Participatory Rural Appraisal tools, was employed to elicit data for the participatory assessment of the climbing devices. Among the climbers 22 per cent were illiterate, 57 per cent had primary school level of education, eight per cent were landless and 64 per cent were having only 10 to 50 cents of land holding. Only 14 per cent of the climbers used mechanical devices for climbing coconut palms. Seventy four per cent of the climbers attended to plant protection measures, mainly control measures for bud rot disease and rhinoceros beetle, apart form harvesting and crown cleaning. Except one climber, none of them had attended any training on PP measures in coconut. Majority of the climbers did not possess the required level of knowledge about the control measures recommended against bud rot disease and rhinoceros beetle infestation. The average time taken to set the device on the tree was more for the Chemberi Joseph model of climbing device but it took less time for climbing up the tree. CPCRI model was assessed better on the dimension of safety for the climber and simplicity in the design of the device. Chemberi Joseph model was assessed better on the dimensions of less drudgery involved in climbing, suitability for using under all weather situations and cost of the device.Item Coconut Cultivation and Coconut Based Enterprises in Lakshadweep - Changing Scenario and Need for Revitalizing Coconut Sector(2022-03) Shameena Beegum; Thamban, C.; Subramanian, P.; Mathew, A.C.; Ananth, P.NItem Coconut inflorescence sap and its value addition as sugar -collection techniques, yield, properties and market perspective(2015-10) Hebbar, K.B.; Arivalagan, M.; Manikantan, M.R.; Mathew, A.C.; Thamban, C.; George V. Thomas; Chowdappa, P.Item Coconut jaggery chips(2008-02) Madhavan, K.; Mathew, A.C.Item Coconut Timber Utilization(2000-07) Mathew, A.C.; Vidhan Singh, T.; Bosco, S.J.D.Item Coconut Timber Utilization(Central Plantation Crops Research Institute, Kasaragod, 1998-03) Mathew, A.C.; Vidhan Singh, T.; Bosco, S.J.D.Item Correlation and principal component analysis of physical properties of tender coconut (Cocos nucifera L.) in relation to the development of trimming machine(2019-02-01) Pandiselvam, R.; Manikantan, M.R.; N. Subhashree; Mathew, A.C.; D. Balasubramanian; Shameena Beegum; Ramesh, S.V.; Niral, V.; Ranjini, T.N; Hebbar, K.BItem Design and development of an auto-irrigation system - A case study in coconut plot(2007-02-08) Madhavan, K.; Mathew, A.C.An electronic tensiometcr has been developed which can automatically control all types of high frequency irrigation systems such as sprinkler irrigation etc. The user can set two levels of tensions in the instrument. Upper limit, at which irrigation is to be started and lower limit at which irrigation is to be stopped. When fitted to any high frequency irrigation system, the tensiometcr will monitor the prevailing soil moisture tension and when it reaches the upper limit of set tension, it will activate either a solenoid valve or an electric pump thereby starting irrigation. Once irrigation is started, the instrument will again monitor the soil moisture tension and when it reaches the set level of lower limit, it will stop irrigation. The auto irrigation system was installed along with a drip irrigation system in a coconut garden and performed well for two irrigation seasons.Item Design of a sequential irrigation system for on farm water management(2007-02-08) Madhavan, K.; Mathew, A.C.To obtain maximum crop yield out of the inputs like water, fertilizer, food, seed etc., invested in crop production, the most important single factor is the field water management. Crops should be irrigated at the proper soil wetness with just enough water to replenish the soil moisture deficit created in the root zone. Therefore a well-controlled irrigation system is one, which optimizes the spatial and temporal distribution of water, not necessarily to obtain the highest yield or to use the least amount of water possible, but to maximize the benefit-to-cost ratio. Tensiometer and gypsum block are the two basic devices that can be used as soil moisture sensors to schedule irrigation. Use of infiltrating agents and observation of moisture deficiency symptom are other methods for irrigation management. In order to control irrigation automatically by continuously monitoring soil water requirement, an electronic tensiometer and an electrical resistance sensor were developed at Central Plantation Crops Research Institute, Kasargod and are being used. But sensitivity of a tensiometer is upto a maximum of 0.85 atmospheres beyond which it seize to function. Many times the soil moisture tension is to be measured even up to 15 atmospheres. However electrical resistance sensors are used for measurement of soil moisture up to this range. Another method of scheduling irrigation is by sequential irrigation system. This paper gives the sequential irrigation system developed at Central Plantation Crops Research Institute. It consists of a time switch and a switching circuit. According to a set time in the time switch, a control circuit operates a solenoid valve connected on the irrigation pipeline to switch on the irrigation and keep it on for a predetermined period of time and then switch it off. The heart of the time switch is a quartz oscillator vibrating at a particular frequency. This frequency is converted to a 1 Hz. pulse in an integrated circuit. This pulse drives a stepper motor, which in turn drives a gear train that is connected to a switching dial. According to a set time in the time switch, a control circuit operates the solenoid valve or the starter of the electric pump either to switch on or switch off the irrigation. This system was installed in a coconut garden and was tested for one season. It is reported that the irrigation requirement for coconut palm is 32 liters/palm/day. Accordingly the number of hours the irrigation is to be done can be calculated by knowing the operating pressure in the irrigation pipeline and discharge rate of the emitter used.Depending on the availability of electric supply the starting time, the period, and the end point of irrigation can be set in the time switch. The practical utility of this circuit is that, this can be used along with any high frequency irrigation system such as sprinkler, perfo etc. and this works automatically and so no man power is required to do the irrigation.Item Design of an electronic tensiometer and an auto irrigation system(Central Plantation Crops Research Institute, Kasaragod, 1999-06) Madhavan, K.; Mathew, A.C.Item Design, development and evaluation of a tractor mounted air blast sprayer for coconut and arecanut(2023-01-01) Pandiselvam, R.; Mathew, A.C.; Syed Imran; Thava Prakasa Pandian, R.; Manikantan, M.R.A tractor mounted air blast sprayer was designed and developed to reduce the drudgery involved in the manual spraying of pesticide by climbing coconut tree. The sprayer mounted on a small tractor, prime mover, is operated by the power taken from its power take off (PTO). In this study, the influence of two important parameters viz., blower speed (2250 and 3000 rpm) and tractor speed (1.5 and 2.5 km h−1) at different heights on the spray characteristics such as volume mean diameter (VMD), droplet density, and spray deposition were collected and analysed. The tractor speed of 1.5 kmh−1 and blower speed of 3000 rpm was observed at recommended VMD between 100– 200 μm at a height above 21 m. Hence, the tractor speed of 1.5 kmh−1 and blower speed of 3000 rpm was selected for field evaluation. The mean height of the coconut tree in the tested field was 24 m. The mean droplet size and deposition were observed at 124 μm and 7.2 μl cm−2, respectively at 24 m height. The effective field capacity, field efficiency, and fuel consumption were 0.524 ha.h−1, 73.72%, and 4.67 l h−1, respectively.Item Design, development and evaluation of a tractor mounted air blast sprayer for coconut and arecanut(2023) Pandiselvam, R.; Mathew, A.C.; Syed Imran; Thava Prakasa Pandian, R.; Manikantan, M.R.Item Design, development and evaluation of a tractor mounted air blast sprayer for coconut and arecanut(2023) Pandiselvam, R.; Mathew, A.C.; Syed Imran; Thava Prakasa Pandian, R.; Manikantan, M.R.