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[AgriLife Today] Agriculture tells the history of the Rio Grande Valley

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By: Rod Santa Ana
Writer: Rod Santa Ana, 956-878-8317, r-santaana@tamu.edu Contact: Dr. Luis Ribera, 956-373-5086, lribera@tamu.edu

WESLACO — As the 1800s rolled into the 1900s, agriculture in the Lower Rio Grande Valley was in the midst of a major makeover, according to local historians and agricultural experts.

Dr. George H. Godfrey, the first plant pathologist in the Rio Grande Valley is shown in the early 1950s working at the then-Rio Grande Valley Experiment Station, now the Texas A&M AgriLife Research and Extension Center at Weslaco. (Photo courtesy of Rod Santa Ana)

Dr. George H. Godfrey, the first plant pathologist in the Rio Grande Valley is shown in the early 1950s working at the then-Rio Grande Valley Experiment Station, now the Texas A&M AgriLife Research and Extension Center at Weslaco. (Photo courtesy of Rod Santa Ana)

It was changing from a livestock economy to one of irrigated farming that would eventually fuel unprecedented growth in South Texas, said Dr. Luís Ribera, a Texas A&M AgriLife Extension Service agricultural economist in College Station.

“The height of the Spanish colonial livestock economy in the Valley lasted roughly from 1770 to 1900,” Ribera said. “It was too dry to grow crops in large quantities, so the economy was based on selling standing cattle and cattle by-products to Mexico.”

Ranches sprouted and flourished in the mid-1700s because of Jose de Escandón, a Spaniard sent to the area by Spanish authorities in Mexico City. He and his followers, the Valley’s pioneers, mapped and settled the fertile region on both sides of the Rio Grande, then known as Seno Mexicano, said Karen Fort, a local historian and co-author of Images of America: Hidalgo County, Texas.

“Escandón succeeded in his task far beyond expectations in this rugged country and renamed it Nuevo Santander after his native Santander Province in Spain,” she said. “Six thousand Spaniards answered the call to settle the land here, and within five years, Escandón had established 24 villages, 15 missions and 20 ranches, complete with almost 90,000 head of cattle.”

That laid the foundation for the settlement of the Lower Rio Grande Valley and the ranching empire that would dominate the land for the next 150 years, Fort said.

“Efforts to irrigate parched corn fields near his settlements ended in failure because Escandón just didn’t have the technology to lift water up and over the high banks of the Rio Grande. Instead, crops were planted when floods subsided or in river bottoms. Away from the river, ranchers dug deep wells that were hand-operated 24 hours a day to water small crops and keep livestock troughs full,” she said.

International law invites outsiders

After the Treaty of Guadalupe Hidalgo in 1848 formalized the national boundary at the Rio Grande, extranjeros, or foreigners, began moving into the area from Europe, marrying into local families and assimilating into the Mexican culture where little or no English was spoken until the early 1900s, Fort said.

“And by the end of 1910, most of the components were in place to begin the next phase of agriculture  —  irrigated farming,” she said. “These included the centrifugal pump, the railroad, electricity, improved farming implements and what was then the largest private irrigation system in the world that helped land companies entice farmers from the Midwest to farm here.”

Between 1900 and 1910, 50 steam-engine pump houses had been built along the Rio Grande to irrigate farmland. At their height, they irrigated 1 million acres of farmland as land prices soared from 25 cents per acre in 1906 to $300 per acre in 1910, Fort said.

“Back-breaking farm labor was provided by landless locals as well as hundreds of thousands of Mexicans who were fleeing the violent and bloody Mexican Revolution of 1910 that ended the 34-year dictatorship of Porfirio Díaz,” she said.

On Oct. 6, 1923, a telegram from College Station arrived in what would soon become the city of Weslaco to advise local farmers that they had succeeded in their efforts to establish an experiment station to conduct scientific research on local crops and extend that information to growers, Fort said.

The experiment station was originally known as Substation No. 15 and immediately began research under the direction of the state’s land-grant college, Texas A&M University, then known as Texas Agricultural and Mechanical College, said Dr. Jose Amador, center director emeritus and one-time director of the Texas A&M AgriLife Research and Extension Center in Weslaco and the Texas A&M-Kingsville Citrus Center.

“The original emphasis was to find solutions for the many problems that plagued citrus, but by 1925 their research included tests on lettuce, spinach, turnips, carrots, beets, cabbage, cauliflower, corn, grapes, beans, cotton, soybeans, sugarcane and various fruits,” he said.

An annual report from Substation No. 15 in 1927 reported problems with root rot, freezes, hurricanes, salty river irrigation water and marketing.

“Insects and plant diseases seem to thrive in this climate and have taken their toll,” the report noted.

Local producers start making big bucks

Despite cyclical and persistent adversities, including uncooperative weather, poor market prices, rising production costs, insect pests and diseases, growers and the labor force persisted, Amador said.

“Despite those difficulties, agriculture here thrived; many growers made handsome profits that allowed them to pay off their land loans in short order,” he said.

The central turning point in developing the Rio Grande Valley hinged on the expanding irrigation system fed by water from two huge upstream dams and favorable water treaties with Mexico in the 1940s, said Dr. Merritt Taylor, a former economist at the AgriLife center in Weslaco and now a research center director in Lane, Okla.

“Freezes caused many land investors and farmers over the years to abandon their efforts here, which allowed the land to be resold to new investors. The strong pushed out the weak and got stronger,” he said.

Each wave of investors brought with them a new influx of money, people from the north, new equipment and new ideas, Taylor said.

The first carload of grapefruit was shipped from McAllen in 1915 and by the mid-1950s, acreage had grown to 120,000 acres of citrus. But freezes, urbanization and other factors have reduced that number to about 30,000 acres today, Amador said.

“A mild climate allowed for a year-round growing season that allowed for all kinds of crops to be grown here, but the mainstays have been vegetables, citrus, sugarcane, cotton and grains,” he noted.

Weslaco Center boosts state, local vegetable production

The Texas A&M center’s “golden era of vegetable breeding,” a highly specialized technology, is responsible for a large segment of the progress in Texas agriculture, said Dr. Ben Villalón, a retired pepper breeder at the Weslaco center and professor emeritus.

“For over 90 years in the Valley, one of the richest farming areas of Texas, scientists have solved some of the toughest problems with citrus, fruits, over 60 different vegetables and many agronomic crops, including cotton, corn, sorghum and sugarcane in the state’s only subtropical region,” Villalón said.

The search for genetic resistance to insects and diseases in vegetables began in Weslaco in the late 1930s by Dr. S. S. Ivanoff, who eventually released a cantaloupe resistant to melon aphids and downy mildew. He was the first of a long string of highly successful vegetable breeders who developed improved varieties still grown all over the world, Villalón said.

“Dr. George H. Godfrey, the first plant pathologist at the A&M center, developed the first downy and powdery mildew resistant cantaloupes in 1950, followed by the release over the next 35 years by Prof. Rumaldo T. ‘Mayo’ Correa of 15 superior cucurbit genotypes, including cantaloupes, watermelons, cucumbers, honey dews and casabas,” Villalón said.

“Between 1952 and 1985 Prof. Paul W. Leeper gained national acclaim by breeding superior tomato, lettuce and onion releases. His onion breeding work eventually led to several disease-resistant sweet, early onion varieties, including the world-famous 1015 onion.”

Villalón himself was among the center’s prolific vegetable breeders, releasing a host of viral resistant peppers that did not exist before 1970, including the world’s first mild jalapeño pepper. It would revolutionize the salsa picante industry, Amador said.

“Suddenly, mild salsas were made available to the public who consumed them at such a rate that by 1990 salsa outsold ketchup as the favorite condiment in the U.S.,” Villalón said. “Capsicums (peppers) have been around for 8,000 years, but in just 30 years we made tremendous genetic improvements to them that continue today under the direction of Dr. Kevin Crosby at Texas A&M AgriLife in College Station.”

Then-U.S. Congressman and chairman of the House Agriculture Subcommittee Kika de la Garza often referred to Villalón as “the man who tamed the mighty jalapeño,” Amador said.

Cotton becomes king

One of those stronger mainstays, cotton, was probably first produced in the area in the mid-1800s and continues to this day, but not without its problems, said John Norman, a retired AgriLife Extension entomologist in Weslaco and now a private consultant.

“Poor market prices, drought, flood, hurricanes and insects have all taken their toll on cotton here in the last 125 years or so,” he said.

Cotton acreage peaked in 1951 after a January freeze nearly wiped out citrus, similar to what happened in 1983 and again in 1989, Norman said.

“Instead of immediately bulldozing out the dead citrus trees, many farmers planted cotton between the rows of dead trees, adding significantly to what is now considered to be the high period of cotton production in the Rio Grande Valley,” Norman said.

“Officially, the acreage was recorded at 880,700 acres, but some estimates put the number closer to 1 million acres. All the other years, from 1947 to 1963, averaged about 450,000 planted acres.”

Cotton acreage, as well as cotton gins, has declined over the years, Norman said.

“Lately, cotton averages about 100,000 acres,” he said. “And the number of active gins has declined from 107 gins in 1952 to about 10 today.”

On the positive side, Valley cotton producers have broken previous records of per-acre yields three years in a row beginning in 2014.

“We went from 1,032 pounds of lint per acre in 2014 to 1,118 pounds in 2015 and 1,128 pounds per acre in 2016,” Norman said. “The previous highest yield per acre was about 860 pounds back in 1984. And all of this is due to improved cotton varieties and a very successful boll weevil eradication program that has completely prevented crop damage from that insect.”

Poor market prices and the higher cost of cotton production in the U.S. as compared to China and other countries have forced many Rio Grande Valley farmers to change the crops they grow, he said.

“Changes in technology will likely be the driving force behind how much or little cotton continues to be planted,” Norman said. “The same is probably true for every crop now grown in the Valley.”

Sugarcane elbows its way back in

Sugarcane, another storied Valley crop, was first grown in the region in 1858, according to Norman Rozeff, a retired agronomist at the sugar mill in Santa Rosa and a local historian.

“The last turn-of-the-century sugar mill in Donna ceased to operate in 1922,” he said. “It wasn’t until 1972 that the sugarcane industry resumed here in the Valley. Farmers were looking for an alternative to planting low-priced cotton and first considered raising sweet sorghum.”

After exhaustive tests at the AgriLife Research center in Weslaco led by agronomist and long-time center director Raymond Cowley to find a suitable alternative, growers settled on sugarcane, he said.

“Over 100 farmers formed a cooperative and built what was then the world’s most modern processing factory, setting the standard for sugarcane industry modernization in the world. And despite weather-related setbacks from time to time, the sugar cooperative has flourished for over 40 years and been a sizeable economic plus for the Valley,” he said.

“Mr. Cowley, an agronomist by training, insisted that sugarcane was a more suitable crop for the Valley than sugar beets and he was right,” Amador said.

Cowley and Amador, a native of Cuba and the only scientist in Weslaco with any experience growing sugarcane, traveled to cane-growing areas, including Louisiana, Florida and Mexico, in search of suitable sugarcane varieties for the Valley.

Unlike the cotton industry, sugarcane acreage has increased measurably over the decades, thanks to accumulated knowledge of the plant’s husbandry, increased yields and constant mill modernizations, Rozeff said.

“The average cane industry here is presently over 40,000 acres and the average yield has risen to well over 3 tons of sugar per acre,” he said. “Sugarcane has been a good fit for the Valley and with the use of bagasse  —  the fiber left after the cane is ground —  to generate electricity, it now takes its place as a ‘green’ renewable resource. This is certainly a goal the community obviously wants to pursue.”

Valley’s billion dollar ag baby here to stay

While its heyday may be behind it, the Rio Grande Valley’s crops, livestock and ag-related businesses continue to have an annual statewide economic impact of about $1.1 billion, Ribera said.

“Urbanization and the implementation of NAFTA (North American Free Trade Agreement) in 1995 had a profound effect on irrigated farming,” he said. “Trade, retail sales and maquiladora manufacturing now overshadow the income of agriculture here.”

While agriculture is worth $584 million in gross sales, retail store sales now account for some $7 billion annually, Ribera said.

Dr. Juan Landivar, director of the Texas A&M AgriLife Research and Extension Centers at Weslaco and Corpus Christi, said despite its drop in prominence and the persistence of challenges, agriculture is here to say.

“Our geographical location as a border state, as well as the increase in agricultural commerce across our ports of entry, open the door to invasive weeds, insects and vector-transmitted diseases that can infest our agricultural fields,” he said. “In addition, global warming threatens to increase our already high summer temperatures, increase water use and losses, and add a few generations of pests to our cropping system.”

Landivar said new scientific technologies, including biotechnology, genetic-marker assisted plant breeding and the use of modern scientific molecular tools, would result in the development of new, resilient cultivars adapted to changing weather conditions and resistant to evolving pests and diseases.

“These new cultivars and the advent of remote sensing and the use of unmanned aerial vehicles, or UAVs, are opening the door to a new dimension of precision management of crops better suited to deal with threats,” he said. “These tools, developed by Texas A&M AgriLife and others, will also continue to play a role in the future of agriculture in South Texas.”

Landivar said the spirit of South Texas farmers will prevail.

“As long as we conserve and use judiciously our water supply and protect our soils from erosion and other mismanagement, there will be a place for agriculture here,” he said. “Farmers here are resourceful, resilient and devoted. They will always find a way to produce crops better than anyone else.”

 

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Tracks in the Sand

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This morning, I walked out into my arena and noticed something that gave me pause. The roping steers had been in there the day before, and even though the ground was wide and level, the sand carried their story. Hoofprints crossed every direction, but in several spots, the same trail was pressed deeper than the rest. Twelve steers had been turned out, yet more than a few chose the exact same path, wearing it down until it stood out from all the other tracks.

Cattle are creatures of habit. Anyone who has spent time around them knows this. They like routine: the same feed, the same water trough, the same shade tree in the pasture. When they are turned loose, they rarely wander without purpose. More often than not, they move together, following the same course as the steer in front of them. There are reasons for this: efficiency, safety, instinct. Walking a beaten path conserves energy, and following the herd is their natural defense. Even in an arena with no real destination, those instincts come through. By the end of a short turnout, you will see the evidence, lines where they have chosen the easiest way to travel and stuck with it.

Out on the range, those lines last longer. Before fences and highways, cattle drives cut deep paths across the land. The Chisholm Trail, which carried herds north from Texas through Oklahoma into Kansas, was walked by millions of cattle in the late 1800s. More than a century later, faint traces of those trails remain, worn so deep by hooves and wagon wheels that the land still carries the mark. On ranches today, you can see the same effect in pastures where cattle walk the same lines between water and grazing. From the ground those trails might look like nothing more than dusty ruts, but from the air, they sometimes stand out as sharp lines winding through otherwise open fields. Cattle do not simply pass over the land; they shape it. Every step adds up.

That simple truth extends beyond livestock. We all make tracks. Our habits and routines are our trails, worn in by repetition, sometimes efficient, sometimes limiting. Like the cow paths, they can serve a purpose, keeping us steady and helping us move forward. But when repeated without thought, they risk becoming ruts, keeping us from stepping into new ground. History offers perspective here too. The old cattle trails built towns and economies, but once railroads and fences changed the landscape, those paths were no longer useful. Sticking to them would have meant going in circles. Progress required something new.


The Tracks We Leave

Standing in the arena, I thought about the kind of tracks I leave behind. Most of mine are not visible in the dirt. They are pressed into my daily life, how I work, the way I handle challenges, the example I set. Some are helpful and worth keeping. Others may have outlived their purpose. The difference comes in knowing when to stay in the track and when to step out of it.

Tomorrow I will drag the arena and smooth it all clean again. The next time the steers are turned in, they will make the same trails. That is their nature. But unlike them, I have a choice. I can decide which paths are worth walking, which ones to change, and what kind of tracks I want to leave for others who might follow.

Tracks tell a story. Sometimes they are only temporary, fading with the next rain. Other times they last for generations, reminders of where herds and people once walked. This morning, the cattle showed me again that even the smallest things on the ranch carry meaning. Their tracks in the arena were not just marks in the sand. They were a lesson: every step matters, and the paths we choose shape more than just the ground beneath our feet.

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Grazing North Texas – American Lotus

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Farmers and ranchers are in a very close partnership with Mother Nature. If we really pay attention, she presents us some interesting scenarios.

For example, though they are totally different types of plants, water lilies and prickly pear have a lot in common. They both have strikingly beautiful flowers, both plants are edible, both of them are invaders into their respective habitats, and too much of either one can be an obstacle that we have to deal with.

Many north Texas ranches rely on excavated ponds for livestock water. Any time a pond contains a significant amount of shallow water so that sunlight reaches the bottom, some type of pond weed will develop. The plant family that includes water lilies and lotuses is a common invader in our livestock water.

Water lilies and lotuses are in the same plant family but they are two separate genera. There are easy ways to tell them apart:
• A primary difference is that water lily leaves commonly float on the surface, but lotus leaves can grow above the water line.
• Water lily leaves and flowers are thick and waxy, while lotus leaves and flowers are thin and papery.
• Water lily leaves have a distinct notch in the leaf, while lotus leaves are more rounded.
• Water lily flower petals are pointed, and lotus petals are more rounded.

The photos attached to this writing are from Clay County, and this plant is common across north Texas. American lotus is adapted to a wide area, from Honduras north through Mexico and across the eastern US and into Canada.

American lotus is a perennial, and it is cold tolerant and heat tolerant. It can grow in any pond or slow moving stream that contains shallow water areas. It prefers water with a depth of about 12 inches. Germination can occur from the large lotus seeds. Tubers, or roots, are established in the mud, and long slender stems extend upward. Leaves and flowers are both emergent in that they grow above the water line.

Lotus flowers are fragrant, and yellowish white with rich gold centers. They open in the morning and close by late afternoon, then open again the next day.

Lotus is an edible plant and has a history as a food source. The large tuberous roots, the size of a human arm, were baked like sweet potatoes. The leaves were eaten like spinach, and the large seeds were ground into flour. Stems taste somewhat like beets and were usually peeled before being eaten.

There is a large world-wide industry of cultivating lilies and lotuses in water gardens. According to Dr. Jerry Parsons, Professor and Extension Horticulturist with Texas A&M AgriLife Extension, cultivation of these plants dates back as early as ancient Egypt. Today, anyone with determination and a little money can have a water garden.

In 2011, the 82nd Texas Legislature designated the water lily “Texas Dawn” as the official Texas State Water Lily. Texas Dawn is a hybrid developed by Texas resident Kenneth Landon, a world-renowned expert in the field of water lilies and the director of the International Water Lily collection in San Angelo.

Ducks and other wildlife utilize the large acorn like seeds of American lotus, and submerged portions of all aquatic plants provide some form of wetland habitat. Many of us have tried to pull a bass out of a group of water lilies or lotuses, and I’m sure others have had better luck than I did. Although there can certainly be benefits to lilies, lotuses, and other aquatic plants, they can also infest ponds to the extent that the pond is not functioning correctly.

So, while the rest of the world works hard to grow these plants, ranchers sometimes need to control populations in their stock ponds. Once it gets a foot hold, American lotus can spread aggressively in wetland areas.

The primary issue that encourages American lotus, and most other water weeds, is shallow water. Look closely at a good livestock pond and you will find that the deeper water is basically free of infestation. Any pond will have a certain amount of shallow water that encourages water weed growth, depending upon the terrain at the pond site and how the pond was constructed. Some ranchers who enjoy and utilize wetland habitat may prefer to have ponds with significant shallow water area.

Almost all livestock ponds have a certain life expectancy. Siltation, or movement of soil into the pond bottom through rainfall runoff, is a natural occurrence. How fast siltation occurs into each pond, and how deep the pond was to start with, determines the length of time that the pond will contain adequate depth for dependable water for livestock.

Ponds that develop infestations of water weeds over a large percent of the surface may not have adequate depth to remain a viable water source for livestock during drought periods, especially in western north Texas where evaporation rates are higher.

Mud, or silt, from the pond bottom, can be removed to deepen the water, but this is a very expensive process. It is often more economical to construct a new pond rather than try to remove the silt from an old one. Most of us do not have the funds to continually construct deep water livestock ponds, so we must try to keep existing structures functioning and providing good drinking water for livestock, for as long as we can. Control of pond weeds like American lotus may be necessary, and it can be accomplished.

There is currently no feasible biological control. American lotus can be cut and removed, but this process us usually temporary because lotus can reestablish from seeds and roots.

American lotus can be safely controlled by chemicals. This must be done carefully. If a pond containing a large amount of any pond weeds is treated to remove all of the vegetation, a fish die-off could occur. When the dying weeds decompose, they use up the oxygen in the water and fish can suffocate. If possible, treat only a portion of the area, wait about two weeks, and treat another portion.

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The Many Benefits of Rabbit Manure

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By Landon Moore

Rabbits offer a lot to the home gardener, and perhaps the most useful of all is their waste. Rabbit manure is likely the single most versatile and valuable fertilizer of any animal manure. It’s a “cold” manure, meaning it can be applied directly to plants in any form without the risk of burning them. In contrast, manure from sheep, horses, cows, and especially poultry must be aged before it’s applied, or it may damage plants. Because rabbit manure doesn’t need to be aged, it retains more of its nutrients and is therefore twice as rich as chicken manure and four times more potent than horse or cow manure. Rabbit manure is safe to apply to soil growing edible crops, has virtually no smell, and contains no harmful seeds. It can be used immediately, or be dried, powdered, made into tea, or turned into worm castings. A single trio of rabbits and their offspring can produce up to two cubic yards of fertilizer per year, along with 100 to 200 pounds of meat.

Rabbit manure is in such high demand as a fertilizer, particularly for roses, that it’s often sold online at a premium price. Some rabbitry owners even charge people to come scoop the manure themselves, paying by the bag. Larger rabbitries might sell by the truckload, but many owners keep it all for their own gardens. You may wonder what makes this little mammal’s excrement so uniquely useful. To understand, we first need to look at the qualities that make it special and then explore its various applications.

To begin with, let’s take a closer look at a rabbit’s biology. Contrary to popular belief, rabbits are not rodents but belong to the order Lagomorpha and family Leporidae, along with hares. All domestic rabbits are domesticated European rabbits (Oryctolagus cuniculus) and are unable to produce fertile offspring with American cottontails. Rabbits are considered “pseudo-ruminants” because they have a single-chambered stomach, but they also have an organ called the cecum, which functions similarly to a rumen and makes up about 40% of their digestive tract. They are crepuscular, meaning they are most active at dawn and dusk, typically feeding in the evening.

Rabbits actually produce two kinds of manure. The familiar dry pellets make up most of their waste, while the other type, known as “cecotropes,” is a moist and smelly substance resembling tiny bunches of grapes. Cecotropes are not fully digested, and because rabbits cannot chew their cud, they reingest the cecotropes as they are excreted. This fermented substance allows the rabbit to absorb more nutrients than it would through initial digestion. While cecotropes are occasionally found in cage trays, the feeding behavior that leads to them is usually only witnessed by the rabbit owner.

The dry pellets are the true manure that most people are familiar with. These small, round, dry pellets have almost no smell when kept dry. When crushed, they break down into a powder resembling tiny grass fragments because, in essence, that’s what they are. Some people crush the pellets before applying them to speed up their absorption into the soil, while others appreciate their “slow-release” feature. Additionally, the manure’s water solubility can be exploited in several ways. Soaking a wheelbarrow full of manure creates a potent sludge that can be easily applied to flat surfaces. If the odor is not an issue, the smell will dissipate once the manure is either dissolved by moisture or dried by the sun. Another method is to make manure tea: fill a cloth bag with manure, seal it, and submerge it in a barrel of water for a few weeks. A simpler method involves placing damp manure at the bottom of a barrel, filling it with water, and letting it sit in the sun for a couple of weeks. Stir occasionally, and you’ll have a powerful liquid fertilizer ready for use.

Domestic rabbits should be fed a modern, pelleted feed, which provides all the nutrients they require. This diet eliminates the risk of noxious seeds being present in the manure, making it safe to apply directly to the lawn, especially during winter. Winter and spring rains will break it down, and by late spring, you’ll have a healthy carpet of turf.

Rabbit manure’s nutrient content varies depending on factors like storage, age, and diet, but it generally contains around 2% nitrogen (N), 1.3% phosphorus (P), and 1.2% potassium (K). The Oregon Extension Service gives a range of 3-4.8% nitrogen, 1.5-2.8% phosphorus, and 1-1.3% potassium. Even at the lower end of the scale, rabbit manure has higher nitrogen content than poultry manure and twice the nitrogen content of cattle manure. One reason rabbit manure doesn’t burn plants is due to the biology of birds, which lack bladders and produce more ammonia in their waste. In contrast, rabbits release ammonia in their urine, which is why their manure may have a stronger odor.

Because of its balanced nitrogen-to-phosphorus ratio, rabbit manure promotes a wider variety of species in the same application area. Applying it directly to heavy clay soils will improve them quickly, especially when combined with other organic matter. It can also improve sandy soils by adding texture and helping them retain moisture. Anyone raising rabbits will have a steady supply of manure, as they are efficient producers. A small herd of 17 animals, including their litters, can produce about one ton of manure annually.

Beyond fertilizing, rabbit manure has several other uses. It is considered the best food for earthworms and can be combined with moisture-holding bedding like peat moss, shredded paper, or hay taken from used nestboxes. Many rabbitries (including my own) keep worm beds right under the cages. The resulting castings are rich in nutrients and can be used as-is or incorporated into soil amendments. A couple of feet of manure under a foot of soil in a hotbox can generate enough warmth to start and grow seeds, even in cold climates like Vermont.

In Europe and Asia, the rabbit meat industry is a billion-dollar market. While the Czech Republic leads in per capita consumption (over 8 pounds per person annually), China is the leading producer of rabbit meat. A recent study in China examined the effects of replacing peat moss in seed-starting soil with rabbit manure. The study found no significant difference in germination rates and noted that the manure provided increased nutrients for seedlings. The ideal ratios for seed-starting soil were found to be one-third manure, one-third perlite, and one-third vermiculite, or half manure and half perlite.

Rabbit manure is often overlooked as a nuisance, but as we can see, it’s an incredibly versatile soil conditioner, excellent fertilizer, ideal food for earthworms, and a superior seed-starting medium. Anyone raising rabbits should consider this another benefit, in addition to having a home meat supply, exhibition livestock, or pets.

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