Agro articles in English Agriculture

Better Information
for Improved Beef Manure Management

Agricultural engineer Bryan Woodbury and agricultural engineer John GilleyManure disposal is a big concern for cattle feedlot operators,” says Agricultural Research Service agricultural engineer John Gilley. “Fortunately, producers can reduce their use of commercial fertilizer—and their production costs—by using manure to fertilize their fields.”

“Manure makes a great fertilizer because it has so many nutrients,” agrees ARS agricultural engineer Bryan Woodbury. “But more people are moving to rural areas and don’t like the odor, so we’re trying to find a way to help producers control odors more effectively.”

Wherever manure ends up, its decomposition releases volatile fatty acids, aromatics, sulfides, amides, and alcohols that are responsible for the odors. There has been some research on reducing odors when manure is used for fertilizer, but much of the work has been focused on applications of swine manure and poultry litter, which can be very different than beef manure applications.

Another factor that affects beef manure odor emissions is diet. Some producers supplement livestock feed with wet distillers grains with solubles (WDGS), a coproduct of corn ethanol production. Adding WDGS to cattle feed can increase the dietary levels of phosphorus, nitrogen, and sulfur, which in turn can raise emissions of ammonia and other odor-causing compounds.

However, WDGS feed supplements are a cost-effective way for livestock producers to lower their expenses, so producers are interested in finding approaches to managing manure odors that do not limit their use. One alternative is identifying how different beef manure application methods affect the emission of odor-causing compounds.

Biological sciences aide Charles Hinds (left) and microbiologist Daniel Miller apply beef cattle manure to experimental plots in studies to identify compounds responsible for manure odor.Woodbury and Gilley decided to conduct a comprehensive study to identify compounds responsible for beef manure odor and to evaluate how diet, soil moisture, and application procedures affect odor emissions. Woodbury works in the ARS Nutrition and Environmental Management Research Unit in Clay Center, Nebraska, while Gilley works in the ARS Agroecosystem Management Research Unit in Lincoln, Nebraska. ARS agricultural engineer Roger Eigenberg and microbiologist Daniel Miller also collaborated on the study, as did West Texas A&M University professor David Parker and University of Nebraska-Lincoln professor David Marx.
“Compounds that cause odor are really hard to identify, so we knew we had our work cut out for us,” Gilley says.

From the Feedlot to the Field
In their study, the team used manure collected from feedlot pens where cattle consumed diets containing 0, 10, or 30 percent WDGS. The scientists also evaluated two application methods—no-till surface manure application and disk tillage that incorporated manure into the soil—and collected air samples before and after water was added to the soil to assess the effect of moisture levels on emissions.

Beef cattle manure was applied at levels that provided 135 pounds of nitrogen per acre, which met the 1-year nitrogen requirement for corn. This meant that some plots received more manure than other plots, because varying levels of WDGS in the cattle feed resulted in different levels of nitrogen in the manure. This approach was selected so that study findings related to odor mitigation practices would have more real-world relevance for producers.

After collecting and analyzing the air samples, the researchers determined that two volatile fatty acids—isovaleric acid and butyric acid—and the aromatic compound 4-methylphenol were responsible for more than two-thirds of detectable beef manure odors. Most of these odors were released within 24 hours after manure was applied to the soil.

Incorporating the manure into the soil and irrigating afterwards reduced most of the odor compounds that were measured. But the manure needed to be incorporated almost immediately after it was applied to obtain the most effective odor mitigation.

The importance of tilling manure into soil was highlighted by emission measurements the researchers obtained for 4-methylphenol. The greatest emissions of this compound occurred from dry soils on no-till plots and were sometimes as much as 10 times more than similar emissions from tilled soils.

The researchers also noted some significant differences between emissions produced by volatile fatty acids and aromatics and emissions produced by sulfide compounds. These differences were especially notable in soils amended with manure produced by cattle that consumed feed with 30 percent WDGS. This type of manure emitted two sulfide compounds (dimethyl disulfide and dimethyl trisulfide) at significantly higher levels than other manures in the study—sometimes as much as 8 times more.

The researchers also saw something they didn’t expect to see: Overall emissions of the sulfide compounds increased when soil moisture levels increased, unlike the other odor compounds, where emissions decreased as soil moisture levels increased. They are currently conducting additional laboratory studies to determine why this occurred. “It was a big surprise to us,” Woodbury says.

“Our results basically confirm that producers who want to use beef manure to improve soil quality can incorporate it into the soil to reduce odors and maintain nutrients,” Woodbury says. “Now we’re working on ways to manage manure in the feedlot that will improve its characteristics as a soil amendment.”

“Knowing the principal components that influence odors in feedlots—pen location, moisture, and temperature—will help us with these investigations,” Gilley adds.
This research, which was published in the Journal of Environmental Quality in 2013, was conducted as part of the GRACEnet (Greenhouse-Gas Reduction through Agricultural Carbon Enhancement Network) program.

GRACEnet is an effort to coordinate research projects at multiple ARS locations and determine the effects of management practices on soil carbon sequestration, trace gas emissions, and environmental quality.—By Ann Perry, Agricultural Research Service Information Staff.

In the photos:

1. Agricultural engineer Bryan Woodbury (front left) collects a soil sample to characterize soil conditions following the field application of beef manure while agricultural engineer John Gilley (front right) and biological sciences aides Seth Lamb (kneeling) and Charles Hinds (standing) adjust small wind tunnel equipment to be used for air quality measurements.

2. Biological sciences aide Charles Hinds (left) and microbiologist Daniel Miller apply beef cattle manure to experimental plots in studies to identify compounds responsible for manure odor.

Photos by Peggy Greb.

Thanks to our friends at Agricultural Research Service!

Larisa English Club Explained

written by Billgreen54 ESL Tutor

Larisa English Club is all about you; students of the English language. Your desire to study and speak great English is why we have created this on-line English resource.


Larisa English Club is a work in progress from years of experience in the classroom. Professional English teachers and students contribute to our English Club with ideas and experiences.


Our website has content created for learners of a second language. Free resources for students as well as teachers of the English language is our main goal.

Video files from Larisa English ClubVideos are posted often and provide English learners with information all about the English language. English videos should be viewed as supplements to your daily dose of English language study.


We encourage comments and language requests from students and teachers alike. We hope you enjoy our videos and educational content found throughout our site.

Contributors to our website are teachers and educators who care about you. They are constantly surrounded by English learners of a second language.

Audio files from Larisa English ClubAudio educational content is provided with resources from Larisa English Club contributors and English education partners. Many of our resources can be downloaded completely free of charge.

Look for content on our website that displays a special “Download Now” link. Our purpose for offering free educational content is to allow students the opportunity to study anytime, anywhere.

PDF files from Larisa English ClubPDF resources can be found throughout our site. English resources from beginner to advanced have been created by many educational providers.

Study English at a level you feel slightly challenged with and your English will improve daily. We encourage comments and suggestions at Larisa English

What is the best way to learn and remember English? Simple! Teach others. What do I mean by “Teach others?” That is simple to!

Learn English by teaching your friends and family what you have learned. Do it over and over, it will stay with you for a long time, maybe forever!

Study the areas of English that interest you the most. Surprisingly, you will learn other parts of English too.

All learners of a foreign language must remember that repetition is key to memorizing what you study. Studies have shown that it takes an English learner an average of seventeen interactions with specific elements to make that knowledge stick. In other words, after being exposed to a certain part of just about anything including English, you will most likely not forget soon.

What is the best method to study and learn great English? The truth is; There isn’t just one! Facts are facts. Everyone learns differently.

Some students like reading. Some like listening. Some like lecturing. It is all about you and what interests you. I can tell you from personal experience teaching English over nine years, no two people are the same.

That said, most successful learners of English, do it by teaching others first. The second best way might be when we speak to others. Group discussion is an important element to speaking.

Without practice and some challenges, students learn to speak fluently slower. If you want to speak great English, practice speaking with others.

Don’t forget, learning the basics in English should always come first for a second language. Speaking can also be incorporated in your English study at the earliest stages of your learning journey.

There is one great way to evaluate your English. It is simple called “Progress”. With progress you are moving ahead and towards new elements in English. If you have to relearn today what you learned yesterday, you have work to do.

The main idea is to make daily progress. If you are making daily progress, you are doing it right. For students who feel they are standing still with English, try something different.

It might be your study habits or one of many other factors. Just take a look at what you are doing everyday and just know that progress is the key to learning and speaking great English.

Once you have studied and learned the basics in English grammar, now it is time to practice, practice, practice. This is always a great idea with friends, family and colleagues.

They help you and you help others. Speaking fluency should be your number one goal. Proper pronunciation is also key to speaking understandably.

Some students and teachers believe that English can be studied and learned without grammar. This is simply not true. Many students are told this by teachers who don’t know grammar either.

This is very dangerous. Not knowing grammar before trying to use it in spoken English is always a bad idea. Once a student buys into this idea of speaking without grammar, he or she always forms nasty habits. Most of the time, these habits are impossible to break.

At some stage in your study of English, you will get to a point where you have a mountain of questions. This is often one of the last stages in English. This is when you need to work with an English teacher that can answer those questions.

This can only be done by someone who is qualified, confident and experienced. Never trust an unqualified person to teach you English or answer your questions.

Work with a qualified English teacher who will answer your questions accurately with confidence.

One important key to learning better and better English is continual exposure to the language. This can be a number of different ways but, do what is best for you. Is it music? What about watching your favorite sitcom? Does your spouse speak English?

Can you practice together? While there are many ways to learn just about anything, practice and being around others is one of the best methods of attaining English proficiency.

Once you feel confident that you have learned as much as needed to achieve your goals, now it is time for more vocabulary. Vocabulary along with speaking English is essential.

When you get to the Intermediate level of English, study new vocabulary daily. Look for three and four syllable words. As we climb that ladder of English proficiency, we need to speak and understand others.

Native speakers of English as well as advanced ESL students speak with words that might be more specific in meaning. To better understand others, you need vocabulary.

Remember, words are just words until you decide how to use them. Most nouns can be used as verbs while many verbs can also be used as nouns. A word is just a word until you decide what job to assign it.

The same goes for all words in English. Most people know the word “Yes” as an adverb. Did you know it is also a noun. Just like all words in English that follow the “Article” as a single word, it is a noun.

Verbs, Modifiers and Adjectives work the same way. To play the record (Noun) or to record (Verb) or to happen in a record time (Modifier). Another example might be the word “Live”. To live (Verb) in a country or to attend a live (Adjective) concert.

Remember that a word is just a word until you have decided how to use it in a statement. The usage and pronunciation might change.

What is the best way to study English? As mentioned before, there isn’t one. That said, for most people who study with a private tutor, progress is often faster. On-line lessons are another great way to study as well.

For those who like or need the interaction in a classroom with others, group study might be best. A professional private language school should offer, private, semi-private, mini-group and group lessons.

Remember that many schools refer to an hour of English as an academic hour. An academic hour of English is just 45 minutes. Professional private language schools always teach a full 60 (Sixty) minutes for each lesson.


What’s New?

The Antarctic is Turning Green
Larisa Article written by Billgreen54 ESL Tutor

The Antarctic is Turning Green

Ian Johnston Independent Environment Correspondent

Scientists say the frozen continent is likely to ‘alter rapidly under future warming, leading to major changes in the biology and landscape of this iconic region. The Antarctic is turning green with rising temperatures having a “dramatic effect” on the growth of moss in the frozen continent, scientists have discovered. Since 1950, temperatures in the Antarctic Peninsula have risen by about half a degree Celsius each decade. This is much faster than the global average.

The Antarctic

Growth rates of moss since 1950 have been running at four to five times the level before. This is according to a study by UK-based researchers who studied three sites across a 1,000km stretch of the peninsula. In addition to climate change, the extinction of animal species is prolific. Plastic waste, fossil fuel ash and radioactive particles from nuclear bomb tests will all leave a permanent record in the planet’s future rocks.

“Between 1950 and 2000, temperatures increased by half a degree per decade on average,” said Dr Amesbury of Exeter University. “The reason we are so confident the moss is responding primarily to temperature, is because of the wide-scale response we see in our moss banks from three different sites that stretch 1,000km across the Antarctic Peninsula.”

The researchers who reported the results of their study in an open-access paper in the journal “Cell Biology”, also looked into how sensitive the moss would be to further warming.

“The results of that analysis lead us to believe there will be a future ‘greening’ of the Antarctic and a further increase in moss growth rates. “We are likely to see massive amounts of moss colonizing new areas of ice-free land created by the warmer climate.

Read more here.

History Topic!

Land Discovery of The Antarctic in 1675

Thank you Wiki.

The first Antarctic land discovered was the island of South Georgia, visited by the English merchant Anthony de la Roché in 1675. Although myths and speculation about a Terra Australis (“Southern Land”) date back to antiquity, the first confirmed sighting of the continent of Antarctica is commonly accepted to have occurred in 1820 by a Russian expedition. The first human born in the Antarctic was Solveig Jacobsen. He was born on 8 October 1913 in South Georgia.

Scientists in the Antarctic

The Antarctic region had no indigenous population when first discovered. It’s present inhabitants comprise of just a few thousand transient scientific and other personnel. They work on tours of duty at several dozen research stations maintained by various countries. However, the region is visited by more than 40,000 tourists annually, the most popular destinations being the Antarctic Peninsula area (notably the South Shetland Islands) and South Georgia Island.

In December 2009, it was noted that the growth of tourism, brought along with it, consequences for both the ecology and the safety of the travelers in its great and remote wilderness. This was at a conference in New Zealand conducted by experts and signatories of the Antarctic Treaty. The definitive results of the New Zealand conference were presented at the Antarctic Treaty states’ meeting in Uruguay in May 2010.

Conversation Topic

Leading statements and questions

For learners of a second language, sometimes, dialog or conversation can be difficult.

For learners of a second language, sometimes, dialog or conversation can be difficult. Conversation engagement, is not that difficult with a few simple tricks. Asking a simple question to start out a conversation is easy with simple question words. I covered question words in a previous English Club.

Question words are often needed to carry on a conversation. The idea is to ask questions connected to details already mentioned. Try to do this while the other person is speaking. This is easy by visualizing objects and situations that are connected.

I call these “Leading Statements and Questions”. It is all about dialog and how to continue a conversation. Now, we go back to those questions words and how they connect. Here’s an idea and example. “What is your favorite food?”. An answer might be “My favorite food is pizza”. Now visualize in your thoughts “What kind of pizza do you like?”. Another question could be; “How often do you eat pizza?” or “Where do you eat pizza?” or “What is your favorite pizza?” or “Why is pizza your favorite?”

You can ask many questions with question words with leading questions and visual thoughts. Here! Take a look at a few examples with our speaking practice…

Speaking Practice

Creating Dialog with Leading Questions

Notice how I focus on the “Park” and “Connections” to the park along with other details relating to the park.

Larisa English Club Speaking PracticeDialogues

Leading questions are easy when you get the hang of it. Practice questions in English and keep the conversation going.

Basic Grammar Review

Prepositions of Place, Movement and Time

Classroom posters are another way for students to learn from and have a reference point when working with a teacher and fellow students.

English prepositions are always fun to learn. It helps if a teacher has classroom teaching aides to assist with examples. Classroom posters are another way for students to learn from and have a reference point when working with a teacher and fellow students.

English prepositions are all about place, movement and time. Before getting started with prepositions, there are two important words to teach as thoroughly as possible.

Start with the word “Arbitrary”. The word arbitrary is used when we refer to something when relevance is not exact. In this case, the word’s “something or anything are indefinite”.

The main objective here is to help students better understand that, when describing with prepositions, often there is more than one choice. In other words, examples like “Please sit near the table or by the table” have little difference in meaning. The main idea is to learn how to communicate. If we both understand what the other is saying; isn’t that perfect English? Or better yet! Perfect communication.

The second important word to learn is “Collocation”.

The second important word to learn is “Collocation”. Collocations or colloquial speech is when we use words in a certain order that are common in English. Commonly spoken word combinations are easier to understand than one might think. Collocations can be used many different ways in English. Common statements, phrasal verbs and the list goes on and on.

 One of the best ways to teach collocations and common word order is with a list of examples. This is done in order of importance. In other words, start by writing a simple statement with the most popular word combination or collocation. Examples might include, “Please have a seat at the table” or “Please have a seat by the table”.

Although these statements mean two different things, they are used universally. The main idea here is “Which word combination is used more commonly?”. Please sit “AT” the table is more common compared to; Please sit “BY” the table. Therefore “AT” is more common compared to “BY”.

Can we use both examples? Yes! Why? Because, I understand you!

Typical time expressions are all about colloquial speech. Place and movement prepositions are generally specific to places and movement but, many can be interchanged.

This is due to the difference between perfect grammar and spoken English. Again, it is often more important to communicate understandably, than to attempt to speak perfect English.

So, which prepositions are the ones we should start with and why teach prepositions in chunks? There are three to start with. Those would be “At, In, On”. These are the three most common prepositions. One of the best ways to learn prepositions is to connect them with understandable words. In other words; Vocabulary that you already know.

In English, there are many methods of teaching grammar. The main idea is to ask questions.

In English, there are many methods of teaching grammar. The main idea is to ask questions. Why do we use the word “AT?” “We use the word “AT” with locations or places”. Why do we use the word “IN?” “We use the word “IN” with limits”. Why do we use the word “ON?” “We use the word “ON” when two things touch”. These are common examples and general thoughts. There are exceptions to just about every rule in English. Just remember collocations and flexible English.

Choose other preposition words to chunk together and form common ways to describe identical situations. All students need to know that while all speech is important, the main goal should always be understandable communication. If an expression or statement is not perfect English but, the other fully understands your statement, isn’t that perfect English?

English Grammar

Reported Speech

A few simple thoughts about “Reported Speech”. There are two ways to report what happened or what someone said, “Direct Reported Speech” and “In-direct Reported Speech”.

Direct reported speech is used when we use the same tense when stated. In other words, if someone says “Hello”, we can refer to the statement with something like “He says hello!”. In this example, we use the same tense as what was said.

“Indirect reported speech” is when we refer to a statement or fact from the past and go back one tense in our statement. So, if someone said “I am hungry” we would say “He said he was hungry”. Notice how the verb “To be” changed from “Am to Was”. In this example, we went back one tense to refer to what was said.

Reported Speech

Another important element to “Reported Speech” is when we use “Modal Auxiliary Verbs”. In direct speech, we use the same modal verb used. In other words, if someone something like “I will go to work next week”, you report with the same modal verb. If you report with indirect speech, use “Would”. So, will to would, can to could, may to might and so on.

This is just a short explanation for reported speech. For more information regarding reported speech, look for grammar books at the Intermediate level and above.

Until next time…

I hope you enjoyed Larisa English Club number 5. Remember that “Life is an Adventure”. Live it to the fullest each and every day!


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