Agroforestry - Science topic

For any non-linear equations, how can we estimate the asymptotic standard error for each of the parameters (say a, b, c, d) of that equation?

Let say an equation:

Y = a/[1+b exp (-c x X] (1/d)

Invite young scientists worldwide in tropical plantation or agroforestry systems to come to China to conduct extensive international cooperative research. If you are interested, let's work together to apply for the International Talented Young Scientist Program provided by the government. Here need your recommendation letter and you need meet the following conditions: (1) be a national of one of the Belt and Road countries or other developing countries; (2) have a formal job in the above countries, engaged in scientific research or science and technology policy research; (3) have a doctoral degree or more than 5 years of scientific research experience; (4) have a high level of scientific research or scientific research potential; (5) be no older than 45 years (calculated on the date of application) and in good health; (6) have good English or Chinese language communication skills; (7) must be able to work full-time in China during the application period; (8) must abide by Chinese laws, regulations and other relevant rules.

How can agroforestry and cover cropping contribute to water conservation efforts in farming practices?

How does the above items impact the goal towards net zero emissions? What might be the role of the emerging scientists, leaders and professionals for achieving sustainability in agriculture sector? What are the policy loopholes that high polluting industries are still doing the same levels of pollutions although facing sanctions against carbon emissions? What consumers can do to reduce emissions from agricultural sector: Is it by consuming low processed foods or eating less?

What are the potentials of these emerging concepts like Carbon farming, Biochar and agroforestry in achieving sustainability?

How does the above items impact the goal towards net zero emissions? What might be the role of the emerging scientists, leaders and professionals for achieving sustainability in agriculture sector? What are the policy loopholes that high polluting industries are still doing the same levels of pollutions although facing sanctions against carbon emissions? What consumers can do to reduce emissions from agricultural sector: Is it by consuming low processed foods or eating less?

What are the potentials of these emerging concepts like Carbon farming, Biochar and agroforestry in achieving sustainability?

I performed this analysis on R to estimate the labor use efficiency of smallholder agroforestry farmers, by running the two-stage analysis simultaneously. I am finding it difficult to make the difference in the OLs and MLE estimates to interpret the results appropriately. Also, I find it difficult to interpret the hypothesis testing for inefficiency and Model correctness.

State the reasons in the case of  non crop plants, which is a timber yielding one?

Agroforestry is considered and identified as a good land management practice. But most of the farmers prefer monoculture or mixed cropping system, But not agroforestry provide lots of tangible and non- tangible befit to the ecosystems. However it is not popular. Any reasons? .

What is the commonly known growth factor of Grevillea robusta in Africa? Especially in high-rainfall and semi-arid areas, agroforestry systems

What is the commonly known growth factor of Grevillea robusta in Africa? Especially in high-rainfall and semi-arid areas, agroforestry systems

A tree-based land use system is well known for carbon credit generation. Agroforestry and Bamboo-based plantations are the other avenues for carbon credit. However, the core agriculture crops also contribute to carbon sequestration for a shorter span of time. Now in the present scenario, what are the possibilities to generate carbon credits through agricultural crops?

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We're particularly interested in topics such as:

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- Agroforestry as a solution to deforestation

- The role of micro-organisms in biodiversity conservation

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Agroforestry systems were developing throughout human development. Despite its ecological and socioeconomic benefits, some agroforestry practices have an adverse impact on the ecology and social security. A few specific agroforestry techniques are employed as motivations to convert natural or semi-natural forests into plantations, which degrades natural forests.

I am going to calculate the carbon sequestration potential of some trees in arid and semi-arid regions using trunk diameter and tree height. Is there a way to calculate carbon sequestration potential without destroying trees?

What is the most suited reliable method?

Selected trees include apple, walnut, elm and almond.

This is in reference to tree species identification using submeter multispectral optical satellite data or UAV images in the context of horticulture and agroforestry studies.

I'm full of invertebrates from soil collections in agroforestry to analyze and discuss, so I welcome citation and research tips... thank you

The title of my research is the contribution of agroforestry in soil fertility to small farmers. I'm using mixed-method research I don't know what should I do in making the theoretical framework. Sorry if I'm not good in English.

The title of my research is " contribution of agroforestry in soil fertility to small farmers." I'm using mixed-method research so I'm having difficulty creating hypotheses since I don't know which type of hypothesis should I use.

I have data on DBH and the Height of different agroforestry species from different agroecological conditions, and I want to quantify the site-specific and species-specific aboveground biomass (ABG)by using existing allometric equations, what procedures can I use? am I need to produce the scatter plots? am I need a model fit? DBH and Height should be my independent variables. Is it possible also to add other factors which have not been used in those existing equations such as temperature and precipitation since they can affect the biomass?

Any guidance should be appreciated or any papers where they have used existing allometric equations for tree biomass quantification.

I am working on the estimation and simulation of the carbon-sequestration potential of different agroforestry systems.

However, I am unable to download it from the official website. http://dataservices.efi.int/casfor/models.htm

Even after filling the form around 10-20 times.

So kindly share the CO2fix 3.2 model here in Zip form or send it to my email: prashantsharma927@gmail.com

Thanks in advance

Regards,

Prashant Sharma

I need to know which tree species can be beneficial to be planted close to date palm trees for better yield and soil improvement (with references).

There is a lot of demand for information about the potential of different tree species (and also other types of crops) to capture and store carbon.

Such information is critical to designing farms with a better climate footprint.

This is particularly true for agroforestry farming systems relying on one or more tree species!

However, information on this topic seems completely scattered and not synthesized.

Does such a database exist?

Best regards,

Thomas Fungenzi

That would be grateful if you could bring examples of agroforestry from around the world.

I would like to know how to calculate the sample size for the inventory of trees in the agricultural landscape (Agroforestry diversity and allometric inventory).

The first study area has 32626 ha, and the second has 101064 ha.

I intended to use the cross-plots along the transect.

what are the effects of different altitudinal variation on productivity of agroforestry systems in India?

I want to correlate the ecology of agroforestry with economics.

Journals related to fruit based Agroforestry and horticulture basically for a review paper.

Hi,

I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry.

Have you ever heard about a database or a source of technical information available to agroforest managers?

That would really facilitate land management and field experiments.

As always, I am trying to use these questions to centralize information from different sources. RG questions tend to be well indexed in Google for different users. Thank you for your contributions!

Best,

Thomas

There is a problem of water logging in the farm fields for maximum time after flood. Suitable agroforestry species for water logging areas.

I've been searching for indonesian (especially java island) native species of crops & vegetables that can be applied for agroforestry on slope with high level of canopy shadding.

So I will appreciate if I can have some recommendation from someone with botanical experts.

Thank you.

I'm studying agroforestry practices in volcano prone area (Mount Merapi in Indonesia). There are some benefits from this system to be volcano disaster mitigation strategies. So actually how far this system is effective can contribute to disaster mitigation strategies, not limited for volcano prone area.

There is lot of emphasis on expansion of green cover or trees on farms (asfForest being common resources even after so conservation laws and efforts forest degradation and deforestation is still on) through agroforestry and tree farming can be a cheaper solution for mitigating climate change effects. If so why in UNFCC only 10-15% projects on A/R under carbon credits framework? If developing countries opting for CDM projects under A/R categories to reach out poor farmers in tropics, rules need to be made simpler and affordable fees for registration for carbon finance. Why only corporate plantations are having edge in projects. How farmers friendly tree farming policies at national level harmonized with climate change & UNFCC.

Daily water demand per day in Milliliter (ml)

Farmers still rely on slow-growing species which take a long time and monitoring. We have fast-growing species like Melia dubia which can be used in numerous ways even for the pulp and paper industries along with wood industries. Agroforestry implications and Melia trials have shown higher income and productivity for the farmers that rely on these species.

Dear All,

I am working on digital classification and Agroforestry species suitability at Farm level in Indian region. could any one please suggest best model for Species distribution Modeling? where id id availabe? and what data will be required for the best species suitability at farm level scale at Bunds or inside the field. is there any method to find the crop- plant interaction.

Thanks in advance!

best Regards,

Raj

Most research using the scoring method by Norton, such as "TOWARDS A METHOD TO SET PRIORITIES AMONGST SPECIES FOR TREE IMPROVEMENT RESEARCH - A CASE STUDY FROM WEST AFRICA" by Jaenicke (1995) receives their score through interviews and questionnaires send to farmers, practitioners or researchers. In my master thesis (Tree selection for an Agroforestry system) however, I want to create this score primarily on existing literature, and complement it by sending questionnaires to experts only for those criteria, where literature is missing. This means I would have to define my own scale (e.g. what pH tolerance of a tree may be suited or not suited to a specific soil) to objectify this very subjective method as much as possible. I am thus wondering, if this could be a feasible way to conduct this method?

In the Handbook "Monitoring and Evaluating Agricultural Research (1993)" Norton speaks of using literature for identifying criteria, but not necessarily for scoring itself, thus I am a little bit confused and would appreciate your help!

SDGs are adopted to tackle numerous issues of human mankind and to secure our environment. Nowadays Agroforestry becoming a silver bullet to answer nine out of 17 SDGs on various fronts. Theoretically many are portrayed that agroforestry is a solution but practically (statistical figures) how agroforestry will provide answers to them.

The components constituting agroforestry depend on our culture and the way of living. I need more explanations.

ISARA is coordinating the education part of Cacao Forest Initiative (http://www.cacaoforest.org/english) supporting local universities to reinforce education on Agroforestry.

We are looking for any expert (fluent in spanish) for this task

Beside dung beetles, I would like to learn more about the diversity of arthropods in silvopasture systems where livestock are kept on rotation. Also what about arthropods diversity in similar systems in temperate zones? Thank you.

Agroforesty is the deliberate combination of the agriculture crops and forest trees on the same piece of the land management unit. Researcher generally presumed that the agroforestry systems are only present on the agriculture lands. Although from my point of view agroforestry systems like silvopastoral, Protein bank, Energy plantations are present beyond the agriculture lands. Pleases give suggestion with reference.

Dear I have a large network in the field ho permit me took a samples from all Algeria territory but especialy from West. Unfortunately I haven't financial support. Ho are interesting to start collaboration with us.

Best regards

Gaouar Semir Bechir Suheil

Carbon forestry or carbon credits produced in agroforestry systems can be easily regulated to benefit small and marginal farmers. Though protocols have been developed in Africa and India under CDM mechanism but still this has been is out of understanding and reach of farmers. even many agroforestry extension workers also unaware of these developments. how many successful stories of carbon fiance in agroforestry or plantations and how to scale up its adoption by simple methodologies for lager benefit of framers specially in India. I share any government policy to incentivize the farmers participating through agroforestry and linking same with carbon credits. Can this be one top up to increase the income of farmers. please share the new development on the topic

Forestry or agroforestry extension is an emerging discipline for determining key factors responsible for its extension or adoption by people. In ear of climate change mainly in developing country agroforestry is economic tool for adoption but it outreach is not beyond fertliser, timber, fuel and fodder. There are various studies conducted for survey and extension but no standard scale is developed for generic criteria. With respect to current scenario what is to be generic scale or parameters for forestry/ agroforestry extension?

How can agroforestry practice reduce the dependency of farmers on primary agricultural commodities and help to establish the production of value-added products?

Hello,

I'm looking for recent data on the use of fertilizers and pesticides in EU forestry. Would you know any EU website where I could find it ?

Cheers,

Laurent

Agroforestry extension is not very widely developed. During last 40 years after scientific agroforestry started different models of new agroforestry developed but their adoption and impact studies are limited. In India like countries it has widespread mixed with traditional agroforestry models. So as you no field or agriculture landscape without trees but what kind of models are more preferred, priorities , adoption and impact not properly known. How to develop criteria and indicators for Agroforestry adoption and impact studies? Is there any such studies please share to improve my studies.

5kg biomass = ? electricity?

I am searching literature to know the exact value of energy (electricity) we can generate by burning a unit biomass of food crops, forest wastes, grasses etc., so that economic benefits of bioenergy industry (biomass heat for electricity generation) can be calculated.

Thanks

I am currently undertaking a study on long-term soil fertility changes and organic matter dynamics in cocoa plantations.

I would like to study the effect of organic amendments and fertilizers on soil, and if possible, on cocoa productivity.

I have access to sites to perform a range of analyses, but given the timescale at which cocoa plantations develops, modelling is a complementary tool to understand how soil have changed in the past, and how they could be changed through different management practices.

I looked into the WalNulCas model, but cocoa is not parametrised yet in the crop library.

There is CASE2, a cocoa physiological production model, but soil changes are not integrated (only water regimes).

There is CENTURY, but I am not sure that a cocoa agroforestry system can be simulated with it.

I am currently going for AMG/Hénin-Dupuis, as a plan B, to look at soil changes, but it won't help me with cocoa growth, development and production.

Any suggestions?

Which are the main agroforestry strategies for carbon sequestration? Are the crops yield and the farmers income affected by these strategies?

What is the difference between Traditional Agroforestry and Ethnoagroforestry?

Agroforestry systems are suggested as sustainable designs in agroecosystems because (among several benefits) they enhance agrobiodiversity. Why then in the agricultural landscapes of more temperate zones agroforestry systems are not constructed as much as in the tropics?

Je suis chercheur en agroforesterie et pour mois les forêts mixtes représentent une alternative crédibles face aux changements climatiques par les multiples services qu'elles peuvent offrir aux populations adjacentes.

Merci de prendre en considération cette préoccupations.

Anthocephalus cadamba ( Kadamb tree) is a well known fast growing tree used in industrial agroforestry. Its wood has various uses. I am interested on studies on its seed technological and nursery aspects. How best its seed can be collected, storage time and nursery practices. Its vegetative propagation is also standardized but still seedlings has its importance for mass scale planting material. Please share your valuable points and research articles on the topic.

Does Agroforestry practices conserve soil over a short period of time? After how long do we expect soil erosion rate to decrease in agroforestry experiments?

There are some articles on potentials of agroforesty for regeneration or increase of productivity for abandoned lands/degraded and or lands with poor soil health. But huge area of such lands in tropics are not converted to agroforesry ecosystems. Please discuss this matter and problems or limitations for such development.

I am working in the Sahel on agroforestry parklands where there is a strong interaction between crops and animals in pasture. The animal brings manure to the soil and the crops produce fodder.

How below ground interactions for water and nutrients can be measured for agroforestry systems ?

Dear colleagues,

I am looking for information on the average biochemical profile of cocoa leaves:

% of cellulose

% of hemicellulose

% of lignin

% solubles

% ash/mineral

... etc

If you also information on other parts such as pod husks, roots and branches, that would help!

Thank you

I am looking for data on using fruit or nut trees and nitrogen fixing trees as intercrop with C. sinensis assamica (tea plant, tropical variety). For my studies I have to give a recommendation for tea smallholder farmers in Kabarole, Uganda.

Considerations are:

Tea is usually grown between the altitude 1200-1800

Tea has a dense and probably competitive root mat in the top 50-75 soil layer.

Trees make tea plants less receptive for fertilizers. Smallholder farmers usually do not have resources for these inputs.

Smallholder tea farmers face insecurity due to climate change (increased temperature not good for tea plants, therefore shading)

Any information on tea agroforestry would be extremely helpful.

Information on local fruit trees also.

Thanks in advance.

Valentijn Struijk

Can anyone point me to sources of information on simultaneous agroforestry systems where biomass of trees and adjacent grain yields, plus grain yields in monoculture have been measured/estimated? They can be from anywhere in the world. I want to compare crop and overall yield with the results of an experiment I worked on in East Africa and there doesn't seem to be much available.

I am analyzing one paper Deheuvelsa et al. 2010 Vegetation structure and productivity in cocoa-based agroforestry systems in

Talamanca, Costa Rica. I have a lot of questions since I am going to characterize the Cacao Agroforest System in Sodconusco Chiapas in other to make a study of Bird diversity and environmental services.

Deheuvelsa and colaborador use a methodology to search the relation between different Cacao Agroforest Clusters (Diversity and Vegetation Structure) and the productivity of Cacao.

They measure cacao productivity as a function of three components.

1) Counting The number of healthy pods in an area of 50mx20m in the center of the cacao Agroforest.

2) They collect 30 cacao pods in 2 seasons before the harvesting, in order to get the dray cacao comercial yield, they weight the fresh beans and applied the 56% discount to the average weight fresh.

3)Finally they estimated the Fresh above the ground plant volume, based on the function basal area x total height.

I am sure those measures are so important and determinant to get very precise data, but I wonder and some colleges suggest that, I could measure just the total dry weight asking the cacao smallholder, and I will get a direct measure of the total productivity of the plantation. But I am sure that I will miss valuable information with such simple method.

Deheuvelsa et al never explains what is the relevance to get those detailed measurements

Kindly provide the equations and methods for ecosystem services estimation in Traditional Agroforestry systems?

Energy accounting in an ecosystem is done different way and emergy analysis proposed by H T Odem is one such method. How to calculate or analyse the energy flow of overall agro ecosystem mainly involving trees components. Any study , references please share.

These systems have been studied in detail in the last decade to some extent. Results show that there is no significant positive response of cocoa to fertilization in these systems as compared to full sun systems. What could be the most plausible reasons explaining these results?

I want to evaluate different uses of the soil: from industrial agriculture through agroecology and agroforestry to restoration, with dynamic indicators of sustainability.

Agroforestry, Sericulture, Mushroom cultivation, Fish rearing, Dairy farming, Poultry, Olericulture, Pomology or Floriculture all distinguished field are welcome to discuss for the suggestion of doubling farmers' income and its hurdles.

Claims to the labor efficiency of perennial systems are repeated frequently without citation in the agroforestry literature. I'm looking for some good quant analysis of this question, and finding very little. Any leads?

Medicinal trees are important source of alkaloids in the traditional system of medicine. Forests are rich source of variety of medicinal trees and some of them are in agricultural landscape as agroforestry trees. Can anybody suggests some good research papers or reference material on the topic .

We often find higher moisture under trees when grown together with crops (e.g. maize) as compared to open crop field (e.g. maize monoculture). Similarly we often observe crop yield reduction under trees. While some literature take the higher soil moisture under trees as an advantage, others take it as an indicator for poor performance of crops under trees. Any good paper with empiric evidence in arid and humid regions?

I'm looking for case studies on Land Equivalent Ratio applied to agroforestry systems to develop learning applications to agronomy students. I would appreciate suggestions of published raw data to create exercises with real situations.

An example of publication:

NEWMAN, S. M. A pear and vegetable interculture system: land equivalent ratio, light use efficiency and productivity. Experimental agriculture, v. 22, n. 4, p. 383-392, 1986.

Agroforestry boost the health of soil, induce water holding capacity (WHC), maintaining soil aggregates, improving soil organic (SOM), facilitating multilayer farming, economically viable and environmentally desirable still research and development is not doing at pace and people not taking much more interest in this field. What are the reasons behind it? Please share your valuable view and research findings.

Thanks and regards, Dr Shankhwar

I am looking for k1 isohumic coefficient values,

for tropical (cocoa) conditions, in Indonesia.

I would like to use them for a simple Hénin-Dupuis modeling experiment on soil organic matter dynamics.

Otherwise, have you heard of a method to approximate the k1 value depending on the organic material characteristics for example (cocoa litterfall in my case)?

Thanks

Is Agroforestry branch of Agriculture or Forestry? Give the suitable reasons and justifications?

Any idea on comphrehensive List of non-edible tree borne oilseeds (TBOs) exist in India. I could find a list of about 90 TBOs. However, In a  report by  ICAR-Central Agroforestry Research Institute, Jhansi, it is stated (but not provided) that about 150 non-edible tree borne oilseeds (TBOs) exist in India.