Cereal Rye

“Allelopathic effects usually taper off after about 30 days. After killing rye, it’s best to wait three to four weeks before planting small-seeded crops such as carrots or onions. If strip tilling vegetables into rye, be aware that rye seedlings have more allelopathic compounds than more mature rye residue. Transplanted vegetables, such as tomatoes, and larger-seeded species, especially legumes, are less susceptible to rye’s allelopathic effects (117).”

“Wireworms (Melanotus communis, Limonius spp.) Highly wireworm- susceptible crops (e.g., root crops, corn, melons) following grassy sod or small grain crops Larvae in soil in the field Wireworms can continue to be damaging in a particular field for many years, since some species remain in the larval stage for 3–6 years.”

“Incorporating the rye before it’s 18 in. high could decrease tie-up of soil N (361, 422). In Pennsylvania (118) and elsewhere, kill at least 10 days before planting corn.”

“Terminating rye 10 to 14 days prior to planting corn greatly minimizes the chance of a negative impact.”

“After working with growers since 2015 with rye cover crops, we feel nitrogen tie-up in the rye is the more likely cause for corn plants having any slower growth, yellowish color, or reduced germination.”

“However, the Iowa Nutrient Reduction Strategy science assessment identified a 6% corn grain yield reduction when grown following a rye cover crop.”

“Therefore, once reaching the reproductive stage, and a C:N greater than 40, free soil N is not available quickly to the next crop, which often leads to N deficiency in crops such as corn that need a lot of N. To combat this, it is recommended to apply a high starter N-rate or apply N early in the season. With legumes such as soybeans, this is not a problem.”

“In contrast, for more than half of our 12 site-years, grain yield of corn planted green was significantly lower or trended lower than corn planted into preplant-killed cover crops.”

“If armyworms have been a problem, for example, burning down rye before a corn crop could move the pests into the corn.”

“They can infect over 80 species of annual and perennial grasses including barley, corn, oats, rye, and wheat, but yield impacts are restricted to wheat, barley, and oats.”

“Because it can increase numbers of cut worms and wire worms in no-till planting conditions, rye is not the most suitable cover where those worms are a problem ahead of grass crops like corn, sweet corn, sorghum or pearl millet.”

“Rye may act as a 'green bridge' for plant pathogens. The dying rye could serve as a host for pathogens that move to corn seedlings after the rye dies.”

“Two recent blogs (blog 1, blog 2) from Alison Robertson’s lab tell that temporal and spatial distancing of cereal rye and corn reduced the severity of Pythium seedling infection and mitigated yield loss.”

“Plant clean, firm seed and rotate out of alliums for at least 4 years after an infestation. Avoid planting allium crops directly after brassicas, corn, grain, or grass cover crops.”

“It’s not the best choice before a small grain crop such as wheat or barley unless you can kill rye reliably and completely, as volunteer rye seed would lower the value of other grains.”

“The disease affects small grains including wheat, barley,oats,triticale,and rye.”

“They can infect over 80 species of annual and perennial grasses including barley, corn, oats, rye, and wheat, but yield impacts are restricted to wheat, barley, and oats.”

“Of these cereal crops, wheat is the preferred host, followed by rye and barley, and is the most suitable for successful population growth”

“To reduce harmful nematodes that oats could encourage, avoid planting oats two years in a row or after nematode-susceptible small grains such as wheat, rye or triticale (71).”

“On the other hand, mixing rye with oats is not recommended because early established oats will compete excessively with rye in fall, possibly resulting in a thin rye stand in the spring when the oats have winterkilled.”

“The disease affects small grains including wheat, barley,oats,triticale,and rye.”

“They can infect over 80 species of annual and perennial grasses including barley, corn, oats, rye, and wheat, but yield impacts are restricted to wheat, barley, and oats.”

“Allelopathic effects usually taper off after about 30 days. After killing rye, it’s best to wait three to four weeks before planting small-seeded crops such as carrots or onions. If strip tilling vegetables into rye, be aware that rye seedlings have more allelopathic compounds than more mature rye residue. Transplanted vegetables, such as tomatoes, and larger-seeded species, especially legumes, are less susceptible to rye’s allelopathic effects (117).”

“Plant clean seed and rotate out of alliums for at least 4 years after an infestation. Avoid planting alliums directly after brassicas, corn, grain, or grass cover crops.”

“Because it can increase numbers of cut worms and wire worms in no-till planting conditions, rye is not the most suitable cover where those worms are a problem ahead of grass crops like corn, sweet corn, sorghum or pearl millet.”

“Wireworm problems occur most often in fields that were recently in hay, pasture, or sod (within the past 3 years), had grassy weeds in previous years, or were in sorghum-sudangrass or grass cover crops or cereal grains. Forest soils may also harbor wireworms; thus recently cleared land can be infested. The most important method of wireworm control is to avoid planting potatoes or other susceptible crops in infested fields.”

“Pumpkins and winter squash performed better in conventional tillage than in no-till in this trial. Compared to conventional tillage, the largest reductions in fruit number and yield occurred in crops no-till transplanted into rye killed with glyphosate.”

“Because it can increase numbers of cut worms and wire worms in no-till planting conditions, rye is not the most suitable cover where those worms are a problem ahead of grass crops like corn, sweet corn, sorghum or pearl millet.”

“Incorporating the rye before it’s 18 in. high could decrease tie-up of soil N (361, 422). In Pennsylvania (118) and elsewhere, kill at least 10 days before planting corn.”

“If armyworms have been a problem, for example, burning down rye before a corn crop could move the pests into the corn.”

“They can infect over 80 species of annual and perennial grasses including barley, corn, oats, rye, and wheat, but yield impacts are restricted to wheat, barley, and oats.”

“Because it can increase numbers of cut worms and wire worms in no-till planting conditions, rye is not the most suitable cover where those worms are a problem ahead of grass crops like corn, sweet corn, sorghum or pearl millet.”

“Wireworms (Melanotus communis, Limonius spp.) Highly wireworm- susceptible crops (e.g., root crops, corn, melons) following grassy sod or small grain crops Larvae in soil in the field Wireworms can continue to be damaging in a particular field for many years, since some species remain in the larval stage for 3–6 years.”

“The disease affects small grains including wheat, barley,oats,triticale,and rye.”

“Wireworms (Melanotus communis, Limonius spp.) Highly wireworm- susceptible crops (e.g., root crops, corn, melons) following grassy sod or small grain crops Larvae in soil in the field Wireworms can continue to be damaging in a particular field for many years, since some species remain in the larval stage for 3–6 years.”

“Pumpkins and winter squash performed better in conventional tillage than in no-till in this trial. Compared to conventional tillage, the largest reductions in fruit number and yield occurred in crops no-till transplanted into rye killed with glyphosate.”

“It’s not the best choice before a small grain crop such as wheat or barley unless you can kill rye reliably and completely, as volunteer rye seed would lower the value of other grains.”

“When possible, plant wheat following a legume crop (soybean) and maintain a rotation with 2 to 3 years between wheat crops. Although soybean is also affected by F. graminearum it is still better to plant wheat after soybean than after another small grain crop or corn.”

“Winter wheat should not follow rye in a rotation because of volunteer rye.”

“The disease affects small grains including wheat, barley,oats,triticale,and rye.”

“They can infect over 80 species of annual and perennial grasses including barley, corn, oats, rye, and wheat, but yield impacts are restricted to wheat, barley, and oats.”

“Of these cereal crops, wheat is the preferred host, followed by rye and barley, and is the most suitable for successful population growth”

“Rotate small grains and corn with legumes, and leave at least one year between cereals, grass or corn before planting small grains.”

“Rotate small grains and corn with legumes, and leave at least one year between cereals, grass or corn before planting small grains.”

“Because it won’t have a chance to vernalize (be exposed to extended cold after germination), the rye can’t set seed and dies on its own within a few months in many areas. This provides good weed control in asparagus, says Rich deWilde, Viroqua, Wis.”

“White Mold (Sclerotinia sclerotiorum) Fluffy white mycelium and black sclerotia distinguish this disease from other crown and root rots of carrots. The sclerotia can survive for many years on the soil. Rotate with small grains.”

“Rotate crops with a cereal or pasture crop; avoid beets, beans, brassicas, and potatoes, all of which increase inoculum.”

“Rotation with non-host crops such as sugar beets, corn, alfalfa, or small grains will reduce number of sclerotia in fields. Avoid planting beans in fields with a white mold history for at least 3 years.”

“Root-knot nematode is extremely damaging to carrots and parsnips, even at low population densities. Stunted, unthrifty foliage is often the first symptom of nematode damage on carrots and parsnips. Taproots often produce multiple forks and abundant fine feeder roots with small galls. Monitor soils for nematode populations. Rotate with non-hosts such as cereals.”

“D-, use of 2 years of grass or 1 year of cereal in rotation with potato helps reduce rhizoctonia canker (67).”

“Advantages mentioned by producers in addition to soil health benefits from the cover crop include cleaner pumpkins at harvest, and in rainy seasons, less mud in the field making a more pleasant experience for customers who pick pumpkins right from the field.”

“In 2002, weed populations were significantly greater than those in 2001, and in 2002, regardless of herbicides, yields of mature fruit were greater in tillage treatments with higher rye residues (SR, ST). Although weed populations were less in one year than the other, herbicides provided effective control in both seasons, and RR, ST, and SR effectively suppressed weeds compared with CT.”

“Prior to the pumpkin planting and throughout the pumpkin growing season we received nearly twice the normal amount of rainfall. With the heavy mat of rolled rye and the more than normal amount of rain; the ground did not dry to a suitable moisture content for the pumpkins to flourish. Pumpkins prefer drier soils rather than wetter soils.”

“Rotate crops with a cereal or pasture crop; avoid beets, beans, brassicas, and potatoes, all of which increase inoculum.”

“Some vegetable farmers strip-till rows into rye in April. The strips are planted in early May to Southern peas, lima beans or snap beans.”

“Overall rolled rye effectively suppressed weeds. Weed biomass was significantly higher in cultivated plots compared to rolled plots. On average cultivated plots had 2,217 lb/A of weed biomass versus only 61 lb/A in rolled plots. Due to drought conditions soybeans yields were low overall but significantly higher in rolled rye plots (28.1 bu/ A versus 7.8 bu/ A in cultivated plots).”

“Cover crop features: rye provides winter cover, scavenges N after corn, becomes a long-lasting (6 to 12 week) residue to hold moisture and suppress weeds for your soybeans”

“Fall-planted rye works well in reducing soil- borne diseases, root-knot nematodes and broadleaf weeds in all cash crops that follow, including cotton, soybean and most vegetables.”

“Rye doesn’t hurt his bean yields, either. Usually at or above county average, his yields range from 45 to 63 bushels per acre, depending on rainfall, says Bennett.”

“Rotating host crops with non-host crops (corn, small grains, and alfalfa) is the most effective method of controlling SCN. Under average Ohio conditions, SCN populations may decline by 50 percent per year under non-host crops. In fields where SCN populations are high, it may take three years or more of non-host crops between soybean crops to reduce SCN populations significantly.”

“Care should be taken when selecting crops to rotate with soybeans. Most broad-leaf crops such as alfalfa, sunflower, dry beans, are also hosts of white mold. Small grains and corn are good nonhost crops for white mold.”

“Due to drought conditions soybeans yields were low overall but significantly higher in rolled rye plots (28.1 bu/ A versus 7.8 bu/ A in cultivated plots).”

“Rotate crops with a cereal or pasture crop (avoid beets, beans, brassicas, and potatoes, which can increase inoculum).”

“Rotate tomatoes with non-host crops such as corn or small grains for at least 4 years.”

“Small grain windbreaks are a useful tool in the earliest spring plantings of warm-season vegetables such as watermelons, cantaloupes, summer squash and tomatoes. Rye has been the preferred small grain for windbreaks because tall types are still available, and it elongates early in the spring.”

“In a number of mid- Atlantic locations, Colorado potato beetles have been virtually absent in tomatoes no-till transplanted into a mix of rye/vetch/crimson clover, perhaps because the beetles can’t navigate through the residue.”

“Killed mulch of a cover crop mix of rye, hairy vetch, crimson clover and barley kept processing tomatoes nearly weed-free for six weeks in an Ohio test.”

“Small grain windbreaks are a useful tool in the earliest spring plantings of warm-season vegetables such as watermelons, cantaloupes, summer squash and tomatoes. Rye has been the preferred small grain for windbreaks because tall types are still available, and it elongates early in the spring.”

“You also can overseed rye into brassicas (369, 422), into soybeans just before leaf drop or between pecan tree rows (61).”

“Rotate small grains and corn with legumes, and leave at least one year between cereals, grass or corn before planting small grains.”

“Rye overseeded into cabbage August 26 covered nearly 80 percent of the between-row plots by mid-October and, despite some summer heat, already had accumulated nearly half a ton of biomass per acre in a New York study. By the May 19 plowdown, rye provided 2.5 tons of dry matter per acre and had accumulated 80 lb. N/A. Cabbage yields weren’t affected, so competition wasn’t a problem (329).”

“Allelopathic effects usually taper off after about 30 days. After killing rye, it’s best to wait three to four weeks before planting small-seeded crops such as carrots or onions. If strip tilling vegetables into rye, be aware that rye seedlings have more allelopathic compounds than more mature rye residue. Transplanted vegetables, such as tomatoes, and larger-seeded species, especially legumes, are less susceptible to rye’s allelopathic effects (117).”

“Allelopathic effects usually taper off after about 30 days. After killing rye, it’s best to wait three to four weeks before planting small-seeded crops such as carrots or onions. If strip tilling vegetables into rye, be aware that rye seedlings have more allelopathic compounds than more mature rye residue. Transplanted vegetables, such as tomatoes, and larger-seeded species, especially legumes, are less susceptible to rye’s allelopathic effects (117).”

“In general, there are less risks to planting green with soybean than corn.”

“Soybean can tolerate heavy amounts of rye residue, thus early termination is not as critical when planting soybean following cereal rye.”

“That project documented no effect of a rye cover crop on soybean production.”

“Therefore, once reaching the reproductive stage, and a C:N greater than 40, free soil N is not available quickly to the next crop, which often leads to N deficiency in crops such as corn that need a lot of N. To combat this, it is recommended to apply a high starter N-rate or apply N early in the season. With legumes such as soybeans, this is not a problem.”

“In summary, over 14 site-years, we measured no yield difference between soybeans planted green compared to soybeans planted into preplant-killed rye or triticale.”

“Allelopathic effects usually taper off after about 30 days. After killing rye, it’s best to wait three to four weeks before planting small-seeded crops such as carrots or onions. If strip tilling vegetables into rye, be aware that rye seedlings have more allelopathic compounds than more mature rye residue. Transplanted vegetables, such as tomatoes, and larger-seeded species, especially legumes, are less susceptible to rye’s allelopathic effects (117).”