scholarly journals Effect of phytosanitary spray solution storage time on the viability of Beauveria bassiana conidia1

2019 ◽  
Vol 49 ◽  
Author(s):  
Renan Zampiroli ◽  
Cleyton Batista de Alvarenga ◽  
Bruno Sérgio Vieira ◽  
Jair Rocha do Prado ◽  
Paula Cristina Natalino Rinaldi ◽  
...  

ABSTRACT Adverse weather conditions, or mechanical problems and decrease in the application rate, may increase the storage time of the spray solution in the sprayer tank. This study aimed to assess the effect of the phytosanitary spray solution storage on the germination of Beauveria bassiana conidia, with or without agricultural adjuvants. A completely randomized design was used, in a 13 x 5 factorial scheme, consisting of thirteen storage times (0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44 and 48 h) and five compositions for the spray solution (B. bassiana, B. bassiana + Helper Neutrum, B. bassiana + TA-35, B. bassiana + Nimbus and B. bassiana + Orobor). The biological spray solution containing B. bassiana conidia and no adjuvants remained viable for use after preparation and the conidial germination decreased 9.2 times after 48 h when an adjuvant was added.

2012 ◽  
Vol 14 (1) ◽  
pp. 126
Author(s):  
Yekki Yasmin ◽  
Lenni Fitri ◽  
Betty Mauliya Bustam

This research is about effectivity analysis of two kinds of fungi i.e. Beauveria bassiana and Metharrizium anisopliae as Aedes aegyptilarvacide, it has been conducted at laboratories Zoology in Biology Department, Mathematics and Natural Sciences Faculty, Syiah KualaUniversity. Aims of this research were estimating maximum time storage of fungi powder as effective larvacide and the number of bacteriacolonies were found in water used for experiment. This research was used Completely Randomized Design (CRD). The experiments consistof two factors i.e kind and saving time of fungi. The result show that the longer the storage time of Beauveria bassiana the more ineffectiveit was as larvacide and the least fungi colonies were found. Metharrizium anisopliae on the other hand, the longer it was kept, the moreeffective it was as larvacide and the more fungi colonies were found.


2021 ◽  
Vol 9 (3) ◽  
pp. 151-157
Author(s):  
A. Apriantini ◽  
S. Adinata ◽  
Y. C. Endrawati

Duck meat is a perishable food that has a short shelf-life. Therefore, packaging is needed to be used tomaintain duck meat quality during storage, one of the ways to extend shelf-life of duck meat is usingpropolis extract as edible coating which is contained antioxidant substances which can be used to extendduring storage. The aim of this research was to analyze the effect of propolis extract as an edible coatingmaterial on duck meat to maintain the quality and extend shelf-life of duck meat at room temperature.The research was used a completely randomized design (CRD) factorial 4x3 with 3 replications,consisting of 4 propolis concentrations (0.0%, 0.5%, 1.0%, 1.5%) and 3 storage times (0 hours, 6 hoursand 24 hours). Duck meats coated with propolis extracts had a significant effect on the water content andantioxidant activity of duck meat (P < 0.05). The storage time had a significant effect on the pH valueand the cooking loss of duck meat (P <0.05). The addition of propolis extract and storage time had asignificant effect on the pH value, cooking loss and antioxidant activity of duck meat (P <0.05).


2020 ◽  
Vol 8 (2) ◽  
pp. 9-17
Author(s):  
Neli Definiati

ABSTRACT Vegetable waste can be an alternative in the supply of animal feed because it has a relatively good nutritional content but the condition is easy to rot, so needs processing through technology in the form of wafers to optimize the utilization of vegetable waste. This study aims to determine the effect of different storage times on fiber fractions and is expected to provide information on how to make wafer feed for ruminant.This research was conducted in April to June 2019 at the Laboratory of Agriculture at the University of Muhammadiyah Bengkulu and continued by Van Soest analysts at the Bogor Institute of Agriculture Laboratory (IPB). The method used in this study is a Completely Randomized Design with A (control), B (stored for 1 week), C (stored for 2 weeks), D (stored for 3 weeks). The parameters observed were hemicellulose, cellulose, and lignin.The results showed that the treatment was significantly different for the content of hemicellulose and lignin but not significantly for the cellulose content. The conclusion in this study is that the storage time of wafers for 21 days can reduce the content of hemicellulose and lignin, but can not reduce the content of cellulose. Keywords: Vegetable Waste, Wafers, Hemicellulose, Cellulose and Lignin.


2020 ◽  
Vol 9 (7) ◽  
pp. e778974713
Author(s):  
Raul Ribeiro Silveira ◽  
Márcia Vitória Santos ◽  
José Barbosa dos Santos ◽  
Evander Alves Ferreira ◽  
Leandro Diego da Silva

Nicosulfuron is the commonly used herbicide for the control of annual weeds and broadleaf weed species in maize production. However, little is known about the length of time nicosulfuron can remain in the spray tank prior to application in the field without impacting efficacy. The objective of this study was to evaluate the effect of different storage times of the nicosulfuron spray solution on phytotoxicity, production and physiology of Marandu palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R. D. Webster cv. Marandu]. The experiment was analyzed in a 6 × 5 factorial arrangement with a complete randomized design. The treatments were six storage times of the nicosulfuron spray solution (0, 6, 12, 24, 48 and 72 h) applied in the Marandu palisadegrass, and five evaluation periods (0, 7, 14, 21 and 60 days after application). Phytotoxicity by the nicosulfuron in the Marandu palisadegrass had parabolic pattern as a function of the interaction between storage time and evaluation period. The photosynthetic rate decreased as a function of the days after nicosulfuron application and showed a discrete increase as a function of the spray solution storage time. Nicosulfuron solution acidifies with time and the effects on phytotoxicity decreased by 30% after 72 h.


2015 ◽  
Vol 39 (1) ◽  
pp. 9 ◽  
Author(s):  
Indah Nur Lestarini ◽  
Novitasari Anggarawati ◽  
Adi Magna Patriadi Nuhriawangsa ◽  
Ratih Dewanti

<p><span><em>The aim of the research was to determine the advantage of tumeric flour (Curcuma domestica Val) </em><span><em>and ginger flour (Zingiber officinale) addition on quality of culled duck meatball in different storage times. </em><span><em>The materials were thigh duck, tumeric flour and ginger flour. The design used in experiment was a </em><span><em>Completely Randomized Design (CRD) with factorial pattern 4x3 as the first factor was concentration of </em><span><em>turmeric flour (0; 0.5; 1.0; 1.5%) and ginger flour (0; 1; 2; 3%) and the second one was storage time (0; 8; </em><span><em>16 hours). The result of the research showed that storage time affected (P&lt;0.05) pH, tenderness and waterholding capacity. Concentration of tumeric flour and ginger flour affected tenderness.There was no </em><span><em>interaction between those two factors on pH, water-holding capacity, tenderness,and total proteolitic </em><span><em>bacteria. Concentration of turmeric flour 0,5% and ginger flour 1% with storage time during 0 hours gave </em><span><em>the best result, with a pH value 6.49, tenderness 0.31, water-holding capacity 22.27, and a total proteolytic </em><span><em>bacteria , 3.57x10</em><span><em>4</em><span><em>. In conclusion, the finest result founded at 0.5% of turmeric flour and 1% of ginger flour</em><span><em>addition in meatball before storage.</em><br /></span></span></span></span></span></span></span></span></span></span></span></span></span></p><p><span><span><span><span><span><span><span><span><span><span><span><span><span><span><em>(Keywords: Culled duck, Ginger flour, Meatball, Storage time, Tumeric flour)</em></span></span></span></span></span></span></span></span></span></span></span><br class="Apple-interchange-newline" /></span></span></span></p>


2021 ◽  
Vol 2 (1) ◽  
pp. 46-62
Author(s):  
Santiago Iglesias-Baniela ◽  
Juan Vinagre-Ríos ◽  
José M. Pérez-Canosa

It is a well-known fact that the 1989 Exxon Valdez disaster caused the escort towing of laden tankers in many coastal areas of the world to become compulsory. In order to implement a new type of escort towing, specially designed to be employed in very adverse weather conditions, considerable changes in the hull form of escort tugs had to be made to improve their stability and performance. Since traditional winch and ropes technologies were only effective in calm waters, tugs had to be fitted with new devices. These improvements allowed the remodeled tugs to counterbalance the strong forces generated by the maneuvers in open waters. The aim of this paper is to perform a comprehensive literature review of the new high-performance automatic dynamic winches. Furthermore, a thorough analysis of the best available technologies regarding towline, essential to properly exploit the new winches, will be carried out. Through this review, the way in which the escort towing industry has faced this technological challenge is shown.


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