field condition
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2022 ◽  
pp. 108207
Author(s):  
Hathai Nochot ◽  
Sumat Loimek ◽  
Patcharin Priyavoravong ◽  
Sirichit Wongkamchai ◽  
Patsharaporn Techasintana Sarasombath

2021 ◽  
Vol 7 (2) ◽  
pp. 88-95
Author(s):  
Iqri Masfuroh ◽  
Ageng Widodo

Education in now faced with demand in preparing the complex dynamics that incapable of this rapid change that develops.Important for family and environment in providing education for children.One education have develops in family environment is.Education center have as villages have substantial and functional relation, the education to the activity not serves as an instrument as planting is he the doctrines.In a is one kiai, have where kiai usually the priest langar.In writing is better understand kiai have in the role in education islam in village kertanegara.Methods used was to utilize the qualitative method that produces descriptive in data is depiction in data analysis and data. Data collection method used is observation. Observation is conducted by seeing field condition. After data observation writer gather and based on order planned meeting.Next writer do sparingly in an effort to understand the interpretation that is to draw a conclusion.


2021 ◽  
Vol 8 (12) ◽  
pp. 118-122
Author(s):  
Nouman Malik ◽  
◽  
Amer Habib ◽  
Muhammad Kamil Malik ◽  
Muhammad Zubair ◽  
...  

Chilli (Capsicum annum L.) is vegetable crop belongs to family Solanaceae. It is an important source of vitamin A and C. In developing countries most of chilli diseases are due to fungal attack and cause severe losses in yield. Fusarium wilt of chilli which is caused by Fusarium oxysporium f. sp. capsici is an important disease of chilli which causes heavy yield losses in Pakistan. Present research was planned to evaluate effect of different concentrations of plant based phyto-extracts against Fusarium wilt on chilli pathogen under natural field condition. In research trails the leave extract of Euclayptus globulus, Cassia fistula, Moringa oleifera, Vachellia nilotica and Azadirachta indica were evaluated in the management of fusarium wilt. These trails were planned under Randomized Complete Block Design (RCBD). Three concentrations of above mentioned leaf extracts were used 20%, 30% and 40%. At 40% Eucalyptus, Moringa and Azadiracta gave best results with maximum reduction in Fusarium wilt. While all other extracts results were also satisfactory. So we can use these botanicals as a control for this disease in chilli. Keywords: Capsicum annum, Fusarium wilt, Fusarium oxysporium, Phyto-extracts.


2021 ◽  
Vol 5 (4) ◽  
pp. 469
Author(s):  
Mohd Yazid Abu Sari ◽  
Yana Mazwin Mohmad Hassim ◽  
Rahmat Hidayat ◽  
Asmala Ahmad

An effective crop management practice is very important to the sustenance of crop production. With the emergence of Industrial Revolution 4.0 (IR 4.0), precision farming has become the key element in modern agriculture to help farmers in maintaining the sustainability of crop production. Unmanned aerial vehicle (UAV) also known as drone was widely used in agriculture as one of the potential technologies to collect the data and monitor the crop condition. Managing and monitoring the paddy field especially at the bigger scale is one of the biggest challenges for farmers. Traditionally, the paddy field and crop condition are only monitored and observed manually by the farmers which may sometimes lead to inaccurate observation of the plot due the large area. Therefore, this study proposes the application of unmanned aerial vehicles and RGB imagery for monitoring rice crop development and paddy field condition. The integration of UAV with RGB digital camera were used to collect the data in the paddy field. Result shows that the early monitoring of rice crops is important to identify the crop condition. Therefore, with the use of aerial imagery analysis from UAV, it can help to improve rice crop management and eventually is expected to increase rice crop production.


Author(s):  
Mst. Noorjahan Begum ◽  
Mohammad Jubair ◽  
Kamrun Nahar ◽  
Sezanur Rahman ◽  
Muhammad Talha ◽  
...  

Author(s):  
P. T. Sharavanan ◽  
V. K. Satya ◽  
M. Rajesh

Root rot of mung bean [Vigna radiata (L.) Wilczek var. radiata] is major disease and claims huge yield loss if they occur in the field. The pathogen is basically soil borne and survivability may vary depends on soil condition. The fungicide chemicals are available to manage the disease; however, the biocontrol agents are nowadays available for the disease management and the microbial activity of the biocontrol agents is influenced by existing soil condition including soil pH. Hence, a study was conducted to find out the halo tolerance capacity of the biocontrol agents against root rot disease in salt affected soils under in vitro, in vivo and field condition. The root rot pathogen Macrophomina phaseolina was isolated from infected root. Efficacy of biocontrol agents against growth of M. phaseolina was assessed in vitro. The results revealed that TNAU strain of Bacillus subtilis reduced the mycelial growth of the M. phaseolina significantly when media supplemented with NaCl at 5% (1.4 cm), 7.5% (1.5 cm), 10% (1.6cm) and 12.5% (1.6 cm) and without NaCl (1.2 cm) and similar trend of reduction also expressed by BCA1 strain of B. subtilis, Pseudomonas fluorescens and Trichoderma viride under in vitro. The performance of the biocontrol agents against the pathogen is slightly reduced when media supplemented with NaCl. The reduction of mycelia weight of M.phaeolina was more in media added with TNAU strain of B.subtilis and the performance of TNAU strain of B.subtilis on reduction of mycelial weight of M.phaseolina is reduced when the broth added with NaCl at 5% (3.15g), 7.5% (3.25g), 10% (3.32g) and 12.5%(3.65g) level and which is followed by P. fluorescens, BCA 1 strain of B. subtilis and Trichoderma viride. Under pot culture conditions, the effect of talc formulated biocontrol agents and challenge inoculation with pathogen was assessed against root rot incidence. It was found that the soil application of TNAU strain of B.subtilis performed better in reducing the root rot incidence at pH of 7.0 (2.37%), 7.5 (4.50%), 8.0 (5.53%) and 8.7 (6.57%) and followed by BCA 1 of B.subtilis in all pH level. Among the biocontrol agents, TNAU strain of B.subtilis applied as seed as well as soil application expressed more population in the rhizosphere in all pH level. The biocontrol agents applied as soil application had more populations of the agents in the soil when compared to seed treatment. The halo tolerance performance of the biocontrol agents was also assessed under field condition in pH of 7.5 and 8.7 during 2019-20 and 2020-21. It was found that the minimum root rot incidence and maximum yield was observed from soil application of TNAU strain of B subtilis at 2.5 kg/ha but the effect is on par with soil application of BCA1 strain of B.subtilis at 2.5 kg/ha.


Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8246
Author(s):  
Yan Li ◽  
He Shen ◽  
Wenfeng Guo

In cold and humid regions, ice accretion sometimes develops on the blades of wind turbines. Blade icing reduces the power generation of the wind turbine and affects the safe operation of the wind farm. For this paper, ultrasonic micro-vibration was researched as an effective de-icing method to remove ice from the wind turbine blade surface and improve the efficiency of wind turbine power generation. A blade segment with NACA0018 airfoil and the hollow structure at the leading edge was designed. The modal analysis of the blade was simulated by ANSYS, and the de-icing vibration mode was selected. Based on the simulation results, the blade segment sample with PZT patches was machined, and its natural frequencies were measured with an impedance analyzer. A return-flow icing wind tunnel system, and a device used to measure the adhesive strength of ice covering the airfoil blade, were designed and manufactured. The experiments on the adhesive strength of the ice were carried out under the excitation of the ultrasonic vibration. The experimental results show that the adhesive strength of the ice, which was generated under the dynamic flow field condition, was lower than the ice generated by water under the static flow field condition. Under the excitation of the ultrasonic vibration, the adhesive strength of the ice decreased. When the excitation frequency was 21.228 kHz, the adhesive strength was the lowest, which was 0.084 MPa. These research findings lay the theoretical and experimental foundations for researching in-depth the application of the ultrasonic de-icing technology to wind turbines.


Heliyon ◽  
2021 ◽  
pp. e08659
Author(s):  
Getachew Gudero Mengesha ◽  
Shiferaw Mekonnen Abebe ◽  
Asaminew Amare Mekonnen ◽  
Abate G/Mikael Esho ◽  
Zerhun Tomas Lera ◽  
...  

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