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A reddit for the science of agronomy: using plants for food, fuel, feed, fiber and reclamation.

The Agronomy Reddit

Agronomy - the science and technology of producing and using plants for food, fuel, fiber, and reclamation. Agronomy encompasses work in the areas of plant genetics, plant physiology, meteorology, and soil science. Agronomy is the application of a combination of sciences like biology, chemistry, economics, ecology, earth science, and genetics. Agronomists today are involved with many issues including producing food, creating healthier food, managing environmental impact of agriculture, and creating energy from plants. Agronomists often specialize in areas such as crop rotation, irrigation and drainage, plant breeding, plant physiology, soil classification, soil fertility, weed control, insect and pest control. Wikipedia: Agronomy

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7,367 Subscribers


Anyone have tips for a young western Canadian agronomist wanting to learn

I was in school for a bit but I wanna learn more and get better t this stuff so I’m the guy people ask about herbicides and growing crops. Like what the soil will do or will this work with this product or why didn’t this work

General stuff

03:16 UTC


AI implementation in Regenerative Farming

13:35 UTC


Nutrient Balance in Crop

20:26 UTC


Join Our SoilBeat Poll Series: Voices of Agronomists 🌾.

19:55 UTC


Fruit yield/growth in the Post-Soviet countries: Where to find an up-to-date map or any information on the topic?

09:07 UTC


Would you use this thing on your field?

Mini Whether Station, which can send you accurate data (including temperature, humidity, precipitation, wind speed and direction, UV, rainfall total and even soil acid and its moisture) This station requires no electricity connection and works on sun light. This station allows you to avoid wasting time traveling to see if the weather on the field is suitable for different types of work. It will also significantly increase yields, as you will be able to accurately track the results of your actions under certain weather conditions and create your own strategy based on this. For example: you fertilized the field at 40% soil moisture and the plants grew by 5 cm in a week and you fertilized at 70% soil moisture and the plants grew by 10 cm. And now in the future you will fertilize the fields at higher soil moisture.

So the main question is, would you use such a station? And for what amount would you be willing to buy it?

Ask your questions👇

View Poll

23:20 UTC


How to find water?

I have a farm with no water for irrigation, and in a country with Mediterranean climate making it worse. I have 3 small damns where animals drink, but due to droughts they don't have much water and dry up (or almost )in the summer. I also use groundwater so that the animals can drink. It was estimated that the water hole gives 5.000 L/H. The problem is I don't know for how many hours that hole can give water without drying.

So I'm looking for advice:

  1. Is it possible to make a water hole on a location where I know it'll be a strong water hole? And who should I talk to to get this info?

  2. How can I estimate the water I can use from the water hole?

For example, I know 5.000 L/H isn't a lot for irrigation but I could slowly fill the damns up and use the water from there if I knew it wouldn't dry up.

Thank you for your help and any additional information would also be helpful!

10:15 UTC


Whats does NSPP stand for? as in NSPP technician

I have applied for a role in Syngenta, I have all the related experience and qualifications. The role duties is about to greenhouse management and cereal grain counting, data files cleaning and helping in research but the position is names as NSPP technician. I do not know what this stands for. Any clue?

20:16 UTC


Hello everyone! I need your help or advice, please!

Hello, I am a 2nd year student at the Faculty of Biotechnology. This year I am writing a course work related to Chlorella vulgaris and the effect of its culture fluid on .Influence on growth, development and accumulation of pigments and vitamins in grain crops. I really need useful articles or any information about this. Specifically:

  • general information about the culture fluid and its properties;
  • under what conditions should crops be grown in laboratory conditions;
  • which vitamins are easiest to isolate from cereal plants;
  • General information about the cultivation of chlorella and grain crops.

I would be very grateful for any answers on this topic, it is very necessary for me now! Thank you in advance!

16:12 UTC


Paspalum maritimum

What herbicide do you recommend to get rid of Paspalum maritimum?

Qual herbicida recomendam para acabar com o Paspalum maritimum (capim gengibre)

22:32 UTC


How to evaluate crop rotation in terms of weed control and sustainability?

I’m diving into an area of agronomy with a background in computer science and statistics, and I’m fascinated by the potential of crop rotation strategies to improve sustainability, productivity, and weed control in agriculture. However, coming from a technical field, I’m keen on establishing clear, quantifiable metrics to evaluate these aspects effectively over both seasonal and multi-seasonal timespans.

Could anyone with expertise in agronomy or related fields suggest how I might go about establishing these metrics? Specifically, I’m interested in:

1.	Sustainability Metrics: I would like to focus on nitrogen levels as a key indicator of soil health and sustainability. How can I measure the impact of different crop rotations on maintaining or improving nitrogen levels in the soil?
2.	Productivity Metrics: Yield is a straightforward metric for productivity, but I’m curious about how to account for variations across different crops and rotations in a way that allows for fair comparison.
3.	Weed Control Effectiveness: What are the best ways to quantify the effectiveness of various crop rotations in controlling weed populations? Are there established methods for measuring this, or would it require developing new metrics?

I’m really looking forward to learning from your experiences and insights. Any advice on how to approach this analysis or suggestions on resources to dive deeper into agronomy from a statistical perspective would be immensely appreciated.

21:35 UTC


Is it possible to switch to organic farming 100%?

I would be thankful for your opinion why it is or isn’t possible to switch 100% to organic farming to feed the world population.

20:46 UTC


Suggestions on apps like google earth.

Hello everyone, I am new to agrobusiness and to this forum. Just to start, I would like to know if anyone has a recommendation on some good apps that would allow me to see my land IRT. Are these paid? If so how much. Have anyone used them, and so on.

13:29 UTC


The Largest Beans Producers in the World

00:59 UTC


Agronomy of Zinc coated Urea application

Watch and subscribe https://youtu.be/rS2N25tSUT4

15:28 UTC


Open source agronomy software

Hi. I'm developing a software to manage agro (fish culture) , hydroponics or any kind of iot telemetry data.

I dont know if I can show The name of the project here, but my goal now is to collect ideas.

How can I improve this sistem and what you miss in an agro system or app to manage farm processes.

22:17 UTC


More new research on microplastics contamination from farm plastics.

04:55 UTC


85% of coffee farmers in Uganda fail to breakeven

Many factors affect the profitability of coffee farming in Uganda, such as climate change, market prices, access to inputs and services, and quality standards.📷
Some of the main challenges faced by Ugandan coffee farmers are:

  1. Climate change: Coffee is sensitive to changes in temperature and rainfall, which can affect the growth, yield, and quality of the crop. Climate change also increases the risk of pests and diseases, such as coffee wilt and coffee berry borer. According to a study by the World Resources Institute, climate change could reduce the suitable area for coffee production in Uganda by 60% by 2050. Unpredictable weather patterns, including droughts or excessive rainfall, can adversely affect coffee yields. Climate change exacerbates these challenges, making it harder for farmers to consistently produce high-quality crops.

2.  Market prices: Coffee prices are determined by the global supply and demand, which can fluctuate significantly depending on the production and consumption trends in different countries. Coffee farmers in Uganda often receive low prices for their beans, especially for Robusta, which is less valued than Arabica. The average price for Robusta in Uganda was $0.97 per kilogram in 2020, while the average cost of production was $1.06 per kilogram. This means that many farmers are operating at a loss or barely breaking even. Global coffee prices can be volatile, impacting the income of coffee farmers. Price fluctuations are influenced by factors such as international demand, weather conditions in major coffee-producing regions, and economic trends.

3 . Access to inputs and services: Coffee farmers in Uganda need access to quality seeds, fertilizers, pesticides, extension services, credit, and infrastructure to improve their productivity and profitability. However, many farmers face challenges in accessing these inputs and services, due to high costs, limited availability, poor infrastructure, and lack of information. For example, only 14% of coffee farmers in Uganda use fertilizers, compared to 36% in Kenya and 69% in Vietnam. counterfeit inputs come on the market that do not meet farmers' expectations after use.
4 - Quality standards: Coffee quality is determined by various factors, such as the variety, the harvesting, the processing, and the storage of the beans. Coffee quality affects the price that farmers receive, as well as their reputation and market access. However, many coffee farmers in Uganda lack the knowledge, skills, and equipment to produce high-quality coffee that meets the standards of the buyers and consumers. For example, some farmers use poor drying methods, such as drying the beans on the ground, which can lead to contamination and spoilage. Government policies related to agriculture, trade, and subsidies can significantly impact the livelihoods of coffee farmers. Policies that are not supportive or lack proper implementation may contribute to the financial challenges faced by farmers.📷
5 - Diseases Coffee plants are susceptible to various diseases that can significantly impact productivity. In Uganda, several common coffee diseases affect farmers' ability to cultivate healthy and high-yielding crops. Some of the prevalent coffee diseases in Uganda include:

  1. Coffee Wilt Disease (CWD):
  • Causal Agent: Fusarium xylarioides.


  1. 📷Impact: Coffee Wilt Disease is a destructive vascular wilt disease that affects the plant's vascular system, causing wilting and death. It can lead to extensive crop losses and has been a significant concern in Uganda.
  2. Coffee Berry Disease (CBD):
  • Causal Agent: Colletotrichum kahawae.📷

  • Impact: CBD affects coffee berries, causing dark lesions on the fruit. This disease can lead to premature fruit drop and reduce the quality and quantity of the harvested beans.

  1. Coffee Leaf Rust (CLR):
  2. Causal Agent: Hemileia vastatrix.📷
  • Impact: CLR is a fungal disease that affects coffee leaves, causing yellow-orange rust-like spots. Severe infections can lead to defoliation, reducing the plant's photosynthetic capacity and affecting bean development.
  1. Coffee Root-Knot Nematode:

Causal Agent: Meloidogyne spp.📷

  • Impact: Nematodes infest the roots of coffee plants, causing the formation of knots or galls. This can lead to reduced nutrient uptake, stunted growth, and overall plant weakness.
  1. Coffee Brown Eye Spot:
  • Causal Agent: Cercospora coffeicola.
  • Impact: Brown Eye Spot affects coffee leaves, causing circular, brown lesions with a distinctive yellow halo. Severe infections can lead to premature leaf drop, affecting the plant's health.
  1. Coffee Twig Borer (Conorhynchus spp.):


  1. Impact: Coffee Twig Borer is an insect pest rather than a disease, but it can significantly affect coffee productivity by damaging twigs and branches. Infestations can lead to reduced yield and the spread of diseases.
  2. Bacterial Blight:

📷Causal Agent: Pseudomonas syringae pv. garcae.


  • Impact: Bacterial Blight causes dark brown to black lesions on leaves and can lead to defoliation. It can impact the quality and yield of coffee beans.

📷To manage these diseases, farmers often employ a combination of cultural, biological, and chemical control methods. These may include planting disease-resistant coffee varieties, practicing proper sanitation, applying fungicides or pesticides judiciously, and implementing good agricultural practices. Regular monitoring and early detection are crucial for effective disease management in coffee plantations. Additionally, agricultural extension services and training programs can help farmers adopt best practices for disease prevention and control.

6. Lack of Knowledge about Modern Farming Techniques:

  • Some farmers may not be familiar with effective farming practices, such as precision agriculture or sustainable farming methods. Training programs and extension services can help educate farmers on adopting these techniques for improved productivity.
  1. Low-yielding varieties Low-yielding varieties of coffee can have several negative effects on coffee farmers and the overall coffee industry in Uganda. To address these challenges, there is a need for interventions aimed at promoting the adoption of high-yielding and disease-resistant coffee varieties. This may involve providing farmers with access to improved seeds, implementing effective extension services, offering training programs on modern farming techniques, and ensuring access to credit for investment in inputs and technologies. Government and non-governmental organizations can play a crucial role in supporting such initiatives to enhance the overall sustainability and competitiveness of the coffee sector in Uganda.

8.   cultural normscultural norms can have a significant impact on the production practices and outcomes for coffee farmers in Uganda. Here are ways in which cultural norms may influence coffee farming:

  1. Traditional Farming Practices:
  • Cultural norms often influence farming traditions passed down through generations. If traditional farming methods are resistant to change, farmers may be slow to adopt modern, more efficient practices that could enhance coffee yields.
  1. Gender Roles:
  • In many cultures, specific roles and responsibilities are assigned based on gender. Women in coffee-growing regions may have specific roles related to coffee cultivation, and their access to resources, education, and decision-making power may be limited. Addressing gender disparities can contribute to improved productivity.
  1. Community Collaboration:
  • Cultural norms emphasizing community and collective decision-making can either positively or negatively impact coffee production. Cooperative farming practices may foster knowledge-sharing and mutual support, while hierarchical cultural structures might hinder collaboration and innovation.
  1. Use of Agricultural Knowledge:
  • Cultural beliefs may influence how farmers perceive and adopt agricultural innovations. For example, if certain practices align with traditional beliefs or are endorsed by community leaders, farmers may be more likely to integrate these practices into their coffee cultivation.
  1. Rituals and Festivals:
  • Cultural events and rituals may influence the timing of agricultural activities. For example, specific ceremonies or festivals may impact when farmers plant or harvest their coffee crops, potentially affecting yields and quality.
  1. Land Inheritance and Ownership:
  • Cultural norms related to land inheritance and ownership can influence how coffee farms are managed. In some cultures, land fragmentation due to inheritance practices may lead to smaller, less efficient farms.
  1. Attitudes Toward Innovation:
  • Cultural attitudes toward innovation and risk-taking can influence a farmer's willingness to adopt new technologies or varieties. Conservative cultural norms may result in resistance to changes perceived as unfamiliar or risky.
  1. Ethical and Sustainable Practices:
  • Cultural values may influence farmers' commitment to ethical and sustainable farming practices. If cultural norms prioritize environmental stewardship and community well-being, farmers may be more inclined to adopt sustainable agricultural methods.
  • To enhance coffee production and the livelihoods of farmers, it's crucial to consider and work within the cultural context. Any interventions, innovations, or training programs should be culturally sensitive and designed in collaboration with the local communities. Engaging with community leaders, understanding traditional practices, and incorporating cultural perspectives into development initiatives can lead to more effective and sustainable improvements in coffee farming practices in Uganda.

These are some of the reasons why coffee farmers in Uganda are struggling to make a profit from their crop. Some various initiatives and interventions aim to address these challenges and support the coffee sector in Uganda, such as promoting fair trade, providing training and extension, improving access to finance and markets, and enhancing climate resilience.📷However, there is no one-size-fits-all solution, as different regions and farmers face different situations and needs. Therefore, locally-led adaptation and innovation are essential for the sustainability and profitability of the coffee industry in Uganda. loses-on-smallholder-farms.html
Source: 18/01/2024(1) Uganda’s Coffee Farmers Show There’s No One-Size-Fits-All Solution for .... https://www.wri.org/insights/ugandas-coffee-farmers-show-theres-no-one-size-fits-all-solution-climate-change-adaptation.(2) Uganda: Reforms needed as coffee industry faces challenges. https://www.theafricareport.com/286052/uganda-reforms-needed-as-coffee-industry-faces-challenges/.(3) Investing in Uganda’s young coffee farmers - Farm Africa. https://www.farmafrica.org/uganda/investing-in-ugandas-young-coffee-farmers.(4) Uganda coffee farmers reap benefits of fair trade - Business Daily. https://www.businessdailyafrica.com/bd/economy/uganda-coffee-farmers-reap-benefits-of-fair-trade-1977964.

21:15 UTC


Can someone check my logic (and math) here? Compost application rates

I have a small farm on a silt loam (leaning towards clay) that is high in nutrients and alkaline. We subscribed to the "deep compost mulch" practice that is preached in this scale of farming but realized last year that we were probably throwing our soil even further out of balance. I think lots of common advice centers around improving low-fertility, lower pH soils, so it's been difficult to find guidelines for my situation. My goal is to decrease pH, add organic matter, and supply enough NPK for our intensive crop production.

I have a compost analysis that says mine has 1.68% N(total N), 0.71% P(phosphate), and 0.74% K(potash) on a dry weight basis. Its percent solids is 50.68%. I'm applying the compost on a per bed basis, and each of my beds averages 135 sq ft. Since the areas are so small, I tried to calculate lbs of NPK per cubic yard and then cubic foot of compost.

I'm assuming (for now) that one yard of my compost weighs 1000 lbs, based on comparable sources.

1000lbs * 0.5068 = 506 lbs dry weight per yard

506 lbs * 0.0168 = 8.5 lbs N per yard, 8.5lbs/27=0.315 lbs per cf (same calculations for P and K)

If I wanted to amend a bed for a crop that requires 150 lbs/acre N, I'd convert that to lbs/135 sq ft for my purposes and get 0.465 lbs/135 sq ft.

So I would need <2 cf of compost (or <4cf to reach P and K requirements) per bed (on paper) to amend for next season's crop? This seems nearly impossible (in practice) to apply. Since the test doesn't include ammonium or nitrate ratios and since my soil is alkaline (7.2-7.5), should I assume some sort of buffer to account for nitrogen loss in ammonia production? Are there properties of compost that make my calculations redundant?

15:01 UTC


CCA advice

From what I’ve read and understood, one is able to acquire a Certified Crop Advisor certification through a minimum of 4 years experience crop advising. I’m southern- ontario based and have worked in the ag industry for over 6 years, primarily doing crop scouting and advising but I go to school for something completely unrelated.. (long story short it wasn’t my choice). Looking for advice from someone who has taken their CCA without an ag related degree and from those that work within the industry to advise whether this would be a smart investment for my future career which I hope to have within the industry. Is this achievable? Will it be exceptionally harder to obtain because I don’t have an education in the agriculture sector or if i studied and worked hard at it could it be possible and worth it? I appreciate any advice!!

23:33 UTC


Tips to know about canola agronomy

Next spring I start at a farm where I will be working predominantly with seed canola and I wanna give myself a head start and learn some more about canola. ( only ever scouted a field or two) so what are my need to knows yall?? Thanks.

15:40 UTC


Fertilizer blend

Hello! I have a question that I hope you guys are able to answer.

I recently bought a nitrate special 20-10-20 fertilizer but I also want to increase the nitrate content by adding calcium nitrate.

I want to mix the calcium nitrate to the fertilizer, but if I do I'm tryna figure out the percentages.

The nitrate special is 20-10-20 with 12.06 nitrate and 7.94 amonical nitrogen. Calcium nitrate has 14% nitrate and 1% amonical nitrogen.

If I mix them in equal parts, would it be 26.06% nitrate nitrogen and 8.94% amonical nitrogen totaling 35-10-20?

If doing so does make the NPK value 35-10-20, then what dose should I do per gallon of water that retains the nitrate special's original strength with the added nitrate boost from the calcium nitrate?

The recommended dose per gallon for the nitrate special fertilizer is 2tsp per gallon and the recommended dose for calcium nitrate is (I think) also 2tsp per gallon (the calcium nitrate does not specify a dose for drench applications, the 2 tsp per gallon is for foliar applications.)

Thank you.

11:15 UTC


agronomy engeneer degree

I have an agronomy engineer degree. Any suggestion of where might be hiring in New York, New Jersey or PA

04:55 UTC


Is There anyone here from New Zealand ..?

please let me know ..anyone from agriculture company from New Zealand..?

16:12 UTC


Career in Agronomy

I’ve been working on a golf course grounds crew for almost 7 months now. In this time i’ve been exploring my career options in the golf industry. The role of agronomist is what I have set my sights on. This led me to exploring the different certifications and degrees offered to get this role, and there is just so much. Really looking to get some advice or insight on what route some folks have taken or are currently taking to reach an agronomist role??

16:46 UTC

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