Questions related to Field Experimentation
To evaluate interaction is one of the most important objectives of fatorial experiments. The use of less rigorous level of significance for interpretation of the interaction, maybe it can catch important effect. In some situations, even without significant interaction (p≤0.05), the decomposed interaction demonstrates the differential effects of levels of factor B for each level of factor A or vice versa.
Could I use p≤0.15 for the interpretation of the effect of the interaction, keeping the usual p≤0.05 for the isolated eﬀect of factors and comparisons? Is it adequate for analyzing agricultural field experiments?
Do you have current article recommendations on this topic?
All the externally aided projects which are funded have to go through rigorous checks and appraisals on a continued basis depending on the work plan. In order to meet the timeline the scholars engaged under the projects has to follow the deadlines. How should the scholars be made to work?
Need a device for field experimentation by which temperature of fruit pulp of developing fruit can be measured by non destructive means especially for fruits like mango, banana etc.
we are going to use the PAM-2500 to measure chlorophyll fluorescence parameters in grapevine. The measurements will be conducted outside, therefore we want to keep it simple, but of course efficient in data aquisition. Therefore dark adaptation is no option for us, bu the instrument has many different functions to circumvent this problem.
I have the following questions:
1. the field screen with the Y(II) measurment provides no light acclimation step with standard actinic light, just a light puls. do you think a standardized acclimations to actinic light is necessary?
2. Fo´is measured under field sceen after the light sat puls and a short period of FR. Is this similar to the FR+Y option?
3. do you use default light intensities? we are working with grapevine
I want to create range of light intensities in the 2×5 m plots under field condition. Which materials can be suitable for this purpose?.
If someone have phenotypic data that could be applied to the methodology suggested in this paper that could be great as this method could have several applications in field and experimental works
I am currently working on evaluating the effects of climate change on marine plankton using a mesocosm facility. I have some queries
The capacity of my tank is 2000 L - Indoor facility
1. Do I need a wave maker for recirculation in the tank or is it enough if I use a high capacity blower (e.g. 80 HP).
2. What kind of instruments should I used for CO2 diffuser?
3. I am planning to run one set of experiment for 20 days, the total capacity of seawater will be 2000 L, Do I need a separate recirculating system?
4. I will be drawing around 10 L for various analysis on alternate days for a period of 20 days.. how much will this effect the total volume ? I don't think refilling is a good idea, kindly suggest me some alternative.
5. What are the general problems that we could face while using a mesocosm facility?
In reference to the recent Science article, "The valley Hall Effect in MoS2" there is a Hall voltage developed when monolayer MoS2 is illuminated by circularly polarized light. There are no external sources of magnetic field in this experiment and yet there is a hall voltage.
I am trying citations related to the idea that "diversity begets diversity." In particular, I am interested in finding examples of experiments where diversity has been manipulated at one trophic level, and then diversity of lower or higher trophic levels was measured as a response variable. I am not interested in experiments that have only manipulated diversity as presence-absence. I am more interested in experiments that have multiple levels of diversity. I'm looking for experiments like these:
Haddad, N.M., Tilman, D., Haarstad, J., Ritchie, M., Knops, J.M., 2001. Contrasting effects of plant richness and composition on insect communities: a field experiment. Am. Nat. 158, 17–35. doi:10.1086/320866
De Deyn, G.B., Raaijmakers, C.E., van Ruijven, J., Berendse, F., van der Putten, W.H., 2004. Plant species identity and diversity effects on different trophic levels of nematodes in the soil food web. Oikos 106, 576–586.
Ogada, D., M.E. Gadd, R.S. Ostfeld, T.P. Young and F. Keesing. 2008. Impacts of large herbivores on bird diversity and abundance in an African savanna. Oecologia 156:387-397.
Thanks for any leads!
We conducted study to check the impact of microbial inoculations, water level variation and addition of organic amendments on soil structure and their indirect impact on root development and growth. Now the problem is my software (Smartroot) is not working properly and other softwares (WinRhizo, RootEdge etc) are not in my access. If someone has an advice as well as some sort of other software then please recommend.
Waiting for your reply
Until recently, the Eotvos experiment (or the equivalence principle) has NEVER been validated under the strong magnetic field. And the strong magnetic field may be one possible factor to impact evidently the Eotvos experiment, resulting in the variation of gravitational mass.
On the other hand, it is necessary to validate the Eotvos experiment in the strong magnetic field. 1) When the distribution of strong magnetic field is uniform, the variation of magnetic flux density will alter the gravitational mass. 2) In case the distribution of strong magnetic field is non-uniform, the variation of magnetic flux density will result in not only the alteration of gravitational mass but also the emergence of strength gradient force.
As a result, the strong magnetic field must break the existing state of force equilibrium, transferring the existing equilibrium position of the neutral particle. Furthermore, on the basis of existing Eotvos experiments, it is feasible to validate the Eotvos experiment via applying strong magnetic fields in the experimental technique.
Anyone have an idea about the long term field experiment (LTFE) with PGPR combination in worldwide
We want to start LTFE with PGPR any reference experiment like this or any idea to start like this,,
Please provided suitable suggestions
I am basically an Agribusiness professional, interested in Random Field Experiment projects. Kindly help me to start with this
I would like to compute light interception and use efficiency for cassava growth. I got data from a field experiment conducted in a location where solar radiation nor sunshine hours data were not available. Only daily minimum and maximum temperatures and rainfall data were available. What is the best way to estimate daily solar radiation in this case? Computer programs and scientific references are welcome! Thanks for your suggestions
I made crosses in 6 varieties of tomatos according to half diallel fashion in a field experiment. In this way I attempted a total of 15 cross combinations. I got sufficient fruit setting in crossed flowers but the number of seeds were less i.e. 20-30 seeds per tomato fruit. On the other hand there were up to 100-150 seeds in selfed tomato fruits. My question is that when I made crosses with sufficient pollen grains, I got less seeds per fruit, what could be possible reasons for less seeds in crossed fruits.
I intend to measure N release rate from broadcast applied controlled release fertilizers. I expect to explain other plant and soil variables according to different release rates. All methods I could find are based in fertilizers incorporation or small pots laboratory incubation. I would like to do that directly in the field. Has someone seen or done a paper with such evaluation?
I want to use a mobile eye tracker for some real world experiments and still trying to search for the best option for it. Any opinions or experiences about this device?
When we use the dirac delta function to solve the paradox of divergence of a 1/r^2 field, we say that divergence of the field is infinity at r=0 as delta function reaches infinity at r=0 which means that there is infinite flux passing through a minute volume. But since it can be mathematically proven that a point charge is nothing but a uniformly charged solid sphere with a very small radius, the electrostatic field at r=0 is 0, which contradicts the result obtained using dirac delta function. Why?