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No full textNot AvailablePlanting is one of critical operations in agriculture. Ground wheel drives conventional metering mechanism, and results in improper placement of seeds because of skidding and vibration of the ground wheel. Electronically equipped seed metering system in the planter have potential to reduces losses associated with friction and wheel slippage. In this study, a retrofit type microcontroller based low-cost seed metering module was developed for commonly available cultivator. Basically, it can be called as mechatronics due to combination of both electronics and mechanical components. Seed metering plate’scell size was designed based on physical properties of black and green gram seeds. The microcontroller controlled motor's speed through Pulse Width Modulation (PWM) based on a signal obtained from a rotary encoder mounted on ground wheel. Under laboratory test, the developed module with a cell size of 5.5 mm found highest quality of feed index of 90 % for green gram and 86 % for black gram when operated at speed of 1.56 km/h. Average plant to plant distance was observed to be 6.73 cm, 6.55 cm for green and black gram during field evaluation. These observed spacing were close to desired spacing (6.28 cm) which intended in the precision metering mechanism. A unit's cost is approximately INR 2000. It facilitates sowing of pulse crop’s seeds without investing extra cost on purchasing separate planter required for it. This retrofit type proposed module will make cultivator as a precision planter suitable for sowing different crops at a very low cost.Not Availabl
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No full textNot AvailableReservoir and wetland ecosystems of the country, despite having high fish production potential (1000-1500 kg ha-1 y-1) are producing sub-optimal fish yields. In order to realize potential from these resources, enclosure culture (pen and cage) technologies and adoption of fisheries enhancement options are important. Pen aquaculture is one of the low-cost with high economic return aquaculture practices that can be practiced at various management levels. Cage aquaculture can be defined as rearing of aquatic organisms in a volume of water enclosed on all sides with cage netting materials including bottom, while permitting free circulation of water through the mesh of cages.Not Availabl
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No full textNot AvailableA study was conducted to design a sensor-based control volume sprayer for vineyard cultivation. The study aimed to develop cluster-specific pesticide and growth regulator application systems with improved penetration and minimum off-target losses, thus saving chemicals and overall cost. For the determination of design values of the control volume unit, physical properties (cluster length, width, and level of compactness) of grape clusters from seventeen major genotypes selected from vineyard research farm ICAR-IARI New Delhi were studied. For the design of the grape cluster detection unit, two different types of sensors, i.e., ultrasonic sensor (HC SR-04) and infrared proximity sensor (B0115NCT4U), were evaluated for their ability to detect the target (grape cluster) and the response time. The design of the spraying unit for the control volume sprayer also involved selecting suitable nozzles and operational parameters. The developed sprayer was evaluated for application of plant growth hormone (Gibberellic acid), and the performance was assessed in terms of droplet size, chemical application per cluster, cluster and berry growth characteristics, sprayer application rate, uniformity coefficient, and application time. The data on the physical properties of grape clusters revealed a maximum cluster length and width of 24.00 ± 0.91 cm and 18.80 ± 0.15 cm, respectively. The ultrasonic sensor had a comparatively higher sensing range, beam angle, and lower price than the infrared sensor. The spray uniformity for the hollow cone and flat fan nozzle varied significantly for the operating pressure range of 2–4.5 kg.cm−2. The developed sprayer consisted of a 3D printed control volume unit, ultrasonic sensor, two flat fan nozzles, microcontroller (Atmega 328P), relay switch, voltage converter, spray tank of 16-liter capacity, and 12 VDC battery. In case of developed sensor-based control volume sprayer, 30% and 35.48% saving in chemical use and application time, respectively, were observed compared to the conventional dipping method. The PGR application method has significant interaction with cluster length and berry growth as the main effect; however, failed to show a significant interaction with cluster width. Maximum cluster growth (16.89 ± 1.72 mm) was observed in PGR application with a developed sprayer.Not Availabl
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No full textNot AvailableBackground: The success of larval rearing is greatly influenced by first feeding regimes and the nutritional quality of weaning diets, with dietary lipids being recognized as one of the most important nutritional factors that affect larval growth and survival. Reports are scanty on milkfish larval nutrition and growth and survival unlike other marine species.
Methods: In this investigation during 2020, five larval diets were prepared with 40 g kg-1 of entirely fish oil (F4), corn oil (C4) or fish oil and corn oil in 3:1 (F3C1), 2:2 (F2C2) and 1:3 (F1C3) ratios. Each diet was fed to triplicate groups of milkfish larvae (45 mg) in a
flow-through rearing system for 42 days.
Result: A growth indices were highest in the F3C1 group, followed by F2C2, F4 and other dietary treatments. The whole-body fatty acid profile was found to change significantly with increasing fish oil replacement with corn oil, i.e., the n-3 polyunsaturated and saturated fatty acid proportions decreased linearly, while the n-6 polyunsaturated fatty acids content increased. Overall, this study reveals that growth and survival of milkfish is dependent on dietary lipid source or combinations that meet the essential fatty acid requirements during the early life stages.Not Availabl
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No full textAgriculture for regulatory decisions and educating the farmers about safe and judicious use of pesticides. During the visit, the laboratory’s capability of testing more than 400 pesticides in a single run, on GC-MS/MS and LC-MS/MS was demonstrated to the Hon’ble dignitaries.
The dignitaries took keen interest in understanding the various processes and appreciated the efforts of the Network Coordinator, AINP-PR and the entire team of Project Coordinating Cell, in successfully running the scheme.Dr. Vandana Tripathy, Network Coordinator, AINP-PR & Scheme In-charge, MPRNL, highlighted that the Project Coordinating Cell, AINP-PR, is the nodal centre for implementation for the DA&FW sponsored central sector scheme, Monitoring of Pesticide Residues at National Level (MPRNL) coordinating the activities of 33 participating laboratories of different ministries and departments (Ministry of Agriculture & Farmers Welfare, Ministry of Health and Family Welfare, Ministry of Environment and Forest, Ministry of Chemical and Fertilizer, Ministry of Commerce, Indian Council of Agriculture Research, Council of Scientific and Industrial Research and State Agricultural Universities) located across the country. All the testing laboratories under the scheme are accredited as per ISO/IEC 17025:2017, for generation of quality data.DA&F
ALL INDIA NETWORK RESEARCH PROJECT ON TOBACCO XII GROUP MEETING
No full textNot AvailableTo evaluate the FCV tobacco entries for yield and qualityat four centres viz.,
Jeelugumilli, Kandukur, Hunsur and Shivamogga with 3 entries along with
respective checks. A replicated trial was conducted with three entries (FCHH-1, FCHH-2 and FCRH-
13) along with three control varieties viz., Kanchan, LT Kanchan and CH-1. The
trial was laid out as per plot size and spacing, and followed all the standard
cultural conditions.Not Availabl