Morphological characterization and selection for high yielding and powdery mildew resistant pea (Pisum sativum) lines

Twenty lines of Pisum sativum particularly developed for high yield and resistant to powdery mildew were evaluated along with two parents (Falloner and 11760-3ER) and two checks (Climex and a local cultivar) with the objectives to determine morphological characterization, yield potential and resistance to powdery mildew. On the basis of one way cluster, the 24 lines were mainly grouped into four clusters, especially on the vegetative and yield contributing traits. It was observed that the tall and high yielding lines were grouped in cluster-III while the dwarf and high yielding lines were grouped in cluster-IV. Analysis of variance (ANOVA) showed significant difference (p1.0) contributed more than 80% variability among the materials

NM-LEACH: A Novel Modified LEACH Protocol to Improve Performance in WSN

Saving energy and improving the lifetime of wireless sensor networks (WSNs) has remained as a key research challenge for some time. Low-energy adaptive clustering hierarchy (LEACH), a classical protocol is designed originally for the purpose of reducing and balancing the network’s energy consumption. However, as the distances between the cluster head (CH) and the member nodes are not taken into consideration, it results in the uneven distribution of the clusters and uneven consumption of the energy in the network. Choosing the CHs with no distinction is an issue as well. Based on the original algorithm, a novel modified LEACH (NM-LEACH) has been proposed, considering critical problems that exist in the network. NM-LEACH protocol is capable of reasonably solving the number of the CHs in each round and takes the energy as a factor of weight under consideration in selecting the CH. The proposed protocol enhances performance by extending the WSN lifecycle, which results in increasing the balance of the energy consumption in the network, and improving the efficiency of the network

Yield and Yield Components of Maize Response Tocompost and Fertilizer-Nitrogen

An experiment on yield and yield components of maize response to compost and fertilizer nitrogen rate as well as timing of application was conducted at New Developmental Farm Khyber Pakhtunkhwa Agricultural University Peshawar during Kharif 2011. The experiment was carried out in Randomized Complete Block Design with split plot arrangement. Compost (0) and 5 kg ha-1) and nitrogen (65 and 130 tons ha-1)were allotted to main plots while Methods (M) of nitrogen application(full at sowing, full at knee stage, and half at sowing and half at knee stages) to sub-plots. Plants at harvest, number of ears per plant, number of grains per row, no. of rows per earwere studied. Higher number of plants at harvest (62102), ear per plant(1.50), grains per row(31), grains per ear (436), rows per ear(13) were produced by compost when applied at the rate of 5 ton ha-1 compared to control plots. Higher no. of plant at harvest(62913), grains per row (31),grains per ear(425 ),rows per ear(13) were produced by 130 kg N ha-1 compared to 65 kg N ha-1. Higher number of plants at harvest  (61599) ,grains per row (31), grains per ear (432), rows per ear (13), were produced when nitrogen was applied as 1/2 at sowing and half 1/2 at knee stage compared to  N application as full dose either at sowing or knee stage. So it is concluded from the experiment that compost at the rate of 5 tons per ha-1 along with 130 kg N ha-1 applied as nitrogen at the rate 130 kg per ha-1 and methods of nitrogen application 1/2 at sowing and 1/2 at knee stage improved yield and yield component of maize and is therefore recommended for general cultivation in agro-climatic condition of Peshawar. Keywords: Maize, Compost, Nitrogen, Method of Nitrogen Applicatio

Maize Response to Compost, Nitrogen and its Method of Application at Peshawar, Pakistan

An experiment on yield and yield components of maize response to compost and fertilizer nitrogen rate as well as timing of application was conducted at New Developmental Farm Khyber Pakhtunkhwa Agricultural University Peshawar during Kharif 2011. The experiment was carried out in Randomized Complete Block Design with split plot arrangement. Compost (0 and 5 kg ha-1) and nitrogen (65 and 130 tons ha-1)were allotted to main plots while methods (M) of nitrogen application(full at sowing, full at knee stage, and half at sowing and half at knee stages) to sub-plots. Biological yield,1000 grain weight, grain yield, shelling percentage, and harvest index(%) were studied. Higher biological yield(9832 kg ha-1), 1000 grain weight(251gm), grain yield (3449 kg ha-1) and shelling (55%),were produced by compost when applied at the rate of 5 ton ha-1 compared to control plots. Higher biological yield(9707 kg ha-1), 1000 grain weight (249g), grain yield (3391 kg ha-1), and shelling  (54%) were produced by 130 kg N ha-1 compared to 65 kg N ha-1. Higher biological yield (9180 kg ha-1) and 1000 grain weight (244g)  were produced when nitrogen was applied as 1/2 at sowing and half 1/2 at knee stage compared toan application as full dose either at sowing or knee stage. So it is concluded from the experiment that compost at the rate of 5 tons per ha-1 along with 130 kg N ha-1 applied as nitrogen at the rate 130 kg per hectare and methods of nitrogen application 1/2 at sowing and 1/2 at knee stage improved yield and yield component of maize and is therefore recommended for general cultivation in agro-climatic condition of Peshawar. Keywords: Maize, Compost, Nitrogen, Method of Nitrogen Applicatio

A secured message transmission protocol for vehicular ad hoc networks

Vehicular Ad hoc Networks (VANETs) become a very crucial addition in the Intelligent Transportation System (ITS). It is challenging for a VANET system to provide security services and parallelly maintain high throughput by utilizing limited resources. To overcome these challenges, we propose a blockchain-based Secured Cluster-based MAC (SCB-MAC) protocol. The nearby vehicles heading towards the same direction will form a cluster and each of the clusters has its blockchain to store and distribute the safety messages. The message which contains emergency information and requires Strict Delay Requirement (SDR) for transmission are called safety messages (SM). Cluster Members (CMs) sign SMs with their private keys while sending them to the blockchain to confirm authentication, integrity, and confidentiality of the message. A Certificate Authority (CA) is responsible for physical verification, key generation, and privacy preservation of the vehicles. We implemented a test scenario as proof of concept and tested the safety message transmission (SMT) protocol in a real-world platform. Computational and storage overhead analysis shows that the proposed protocol for SMT implements security, authentication, integrity, robustness, non-repudiation, etc. while maintaining the SDR. Messages that are less important compared to the SMs are called non-safety messages (NSM) and vehicles use RTS/CTS mechanism for NSM transmission. Numerical studies show that the proposed NSM transmission method maintains 6 times more throughput, 2 times less delay and 125% less Packet Dropping Rate (PDR) than traditional MAC protocols. These results prove that the proposed protocol outperforms the traditionalMAC protocols

RDSP: Rapidly Deployable Wireless Ad Hoc System for Post-Disaster Management

In post-disaster scenarios, such as after floods, earthquakes, and in war zones, the cellular communication infrastructure may be destroyed or seriously disrupted. In such emergency scenarios, it becomes very important for first aid responders to communicate with other rescue teams in order to provide feedback to both the central office and the disaster survivors. To address this issue, rapidly deployable systems are required to re-establish connectivity and assist users and first responders in the region of incident. In this work, we describe the design, implementation, and evaluation of a rapidly deployable system for first response applications in post-disaster situations, named RDSP. The proposed system helps early rescue responders and victims by sharing their location information to remotely located servers by utilizing a novel routing scheme. This novel routing scheme consists of the Dynamic ID Assignment (DIA) algorithm and the Minimum Maximum Neighbor (MMN) algorithm. The DIA algorithm is used by relay devices to dynamically select their IDs on the basis of all the available IDs of networks. Whereas, the MMN algorithm is used by the client and relay devices to dynamically select their next neighbor relays for the transmission of messages. The RDSP contains three devices; the client device sends the victim's location information to the server, the relay device relays information between client and server device, the server device receives messages from the client device to alert the rescue team. We deployed and evaluated our system in the outdoor environment of the university campus. The experimental results show that the RDSP system reduces the message delivery delay and improves the message delivery ratio with lower communication overhead.Comment: 23 pages, 12 figures, accepted for publication in Sensors 202

RDSP : Rapidly deployable wireless ad hoc system for post-disaster management

Peer reviewe

Internet of Things and Wireless Sensor Networks for smart agriculture applications: a survey

The increasing food scarcity necessitates sustainable agriculture achieved through automation to meet the growing demand. Integrating the Internet of Things (IoT) and Wireless Sensor Networks (WSNs) is crucial in enhancing food production across various agricultural domains, encompassing irrigation, soil moisture monitoring, fertilizer optimization and control, early-stage pest and crop disease management, and energy conservation. Wireless application protocols such as ZigBee, WiFi, SigFox, and LoRaWAN are commonly employed to collect real-time data for monitoring purposes. Embracing advanced technology is imperative to ensure efficient annual production. Therefore, this study emphasizes a comprehensive, future-oriented approach, delving into IoT-WSNs, wireless network protocols, and their applications in agriculture since 2019. It thoroughly discusses the overview of IoT and WSNs, encompassing their architectures and summarization of network protocols. Furthermore, the study addresses recent issues and challenges related to IoT-WSNs and proposes mitigation strategies. It provides clear recommendations for the future, emphasizing the integration of advanced technology aiming to contribute to the future development of smart agriculture systems