LATE-FALL APPLICATION OF POTASH TO WINTER RYE TO IMPROVE GROUND COVER EFFECTIVENESS

1986 ◽  
Vol 66 (1) ◽  
pp. 31-35 ◽  
Author(s):  
LINNELL M. EDWARDS
Keyword(s):  
Prince Edward Island ◽  
Ground Cover ◽  
Dry Weight ◽  
Early Spring ◽  
Cultivar Differences ◽  
Winter Rye ◽  
Cool Season ◽  
Late Fall ◽  
Secale Cereale L ◽  
K Concentration

In view of the difficulty of establishing a winter cover crop after potato harvesting in the late fall in Prince Edward Island, a study was done to test the effect of three levels of banded K on the cool-season establishment and survival of two cultivars of winter rye (Secale cereale L.). There was no significant effect of K level on shoot or root dry weight in either late fall or early spring, or on shoot or root K content. There were significant cultivar differences in shoot and root dry wt in late fall and early spring, but no interaction between K level and rye cultivar. Key words: Cold stress, winter ground cover, critical K concentration

INFLUENCE OF FALL GROWTH AND DEVELOPMENT ON COLD TOLERANCE OF RYE AND WHEAT

1977 ◽  
Vol 57 (3) ◽  
pp. 751-755 ◽  
Author(s):  
D. B. FOWLER ◽  
L. V. GUSTA
Keyword(s):  
Cold Tolerance ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Developmental Differences ◽  
Cultivar Differences ◽  
Winter Rye ◽  
Fresh Weight ◽  
Acclimation Period ◽  
Secale Cereale L ◽  
Survival Potential

Changes in number of coleoptile tillers, plant height, leaves per plant, degree of vernalization, cold tolerance (LT50) and several measurements made on the plant crown were determined for winter rye (Secale cereale L.) and winter wheat (Triticum aestivum L.) cultivars grown under field conditions in the fall of 1972 and 1973 at Saskatoon. Measurements made on the crown included fresh weight, dry weight, water content, depth, root number, root length and number of tillers. Years, dates of seeding and time of sampling had a significant influence on most variables. Correlations based on developmental differences for the acclimation period were significant for all variables measured. Dry weight was most closely related to LT50, and regression analyses indicated that the remaining variables did not explain any additional variability in LT50. Cultivar differences were apparent for most variables studied; however, these differences often did not reflect differences in field survival potential.

scholarly journals Intersowing Cover Crops into Standing Soybean in the US Upper Midwest

Agronomy ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 264 ◽  
Author(s):  
Alan T. Peterson ◽  
Marisol T. Berti ◽  
Dulan Samarappuli
Keyword(s):  
Cover Crops ◽  
Wheat Yield ◽  
Early Spring ◽  
Winter Rye ◽  
Upper Midwest ◽  
N Accumulation ◽  
Nitrate Losses ◽  
The Us ◽  
Secale Cereale L ◽  
Glycine Max L

Nutrient losses and soil erosion after soybean (Glycine max (L.) Merr.) harvest are common in the US Upper Midwest. Cover crops need to provide adequate growth and cover to prevent soil degradation throughout the winter and early spring months. The objective of this study was to determine the establishment of intersown cover crops and their impacts on a soybean-wheat rotation. Four cover crops—winter camelina (Camelina sativa (L.) Crantz), winter pea (Pisum sativum ssp. arvense (L.) Poir), winter rye (Secale cereale L.), and radish (Raphanus sativus L.)—were directly sown at the R4 and R6 stages of soybean at two locations, Prosper and Fargo, ND in 2016–2017. Cover crops above ground biomass in the fall ranged from 0.4 to 3.0 Mg ha−1 and N accumulation ranged from 28.7 to 73.2 kg ha−1. Winter camelina and winter rye reduced subsequent spring wheat yield compared with the no cover crop treatment. Fall soil residual NO3-N levels were lowest where cover crops were sown compared with the check. Spring NO3-N levels were lowest in winter camelina and winter rye compared with all the other cover crops and the check. Results indicated intersowing cover crops have no impact on soybean yield, and show potential to mitigate soil nitrate losses in areas that grow soybean as a cash crop.

DEHARDENING OF WINTER WHEAT AND RYE UNDER SPRING FIELD CONDITIONS

1977 ◽  
Vol 57 (4) ◽  
pp. 1049-1054 ◽  
Author(s):  
D. B. FOWLER ◽  
L. V. GUSTA
Keyword(s):  
Moisture Content ◽  
Winter Wheat ◽  
Cold Hardiness ◽  
Dry Weight ◽  
Test Site ◽  
Triticum Aestivum L ◽  
Winter Rye ◽  
Fresh Weight ◽  
Seeding Date ◽  
Secale Cereale L

Changes in cold hardiness (LT50), fresh weight, dry weight and moisture content were measured on crowns of winter wheat (Triticum aestivum L.) and rye (Secale cereale L.) taken from the field at weekly intervals in the spring of 1973 and 1974 at Saskatoon, Sask. In all trials, Frontier rye came out of the winter with superior cold hardiness and maintained a higher level of hardiness during most of the dehardening period. For cultivars of both species, rapid dehardening did not occur until the ground temperature at crown depth remained above 5 C for several days. Changes in crown moisture content tended to increase during dehardening. Over this same period crown dry weight increased for winter rye but did not show a consistent pattern of change for winter wheat. Two test sites were utilized in 1974. One site was protected by trees and the other was exposed. General patterns of dehardening were similar for these two sites, but cultivar winter field survival potentials were reflected only by LT50 ratings for the exposed test site. The influence of fall seeding date on spring dehardening was also investigated. Late-seeded wheat plots did not survive the winter in all trials. However, where there was winter survival, no differences in rate of dehardening due to seeding date were observed.

EFFECT OF HARVEST TIME AND DRYING METHOD ON QUALITY AND GRADE OF WINTER RYE

1987 ◽  
Vol 67 (2) ◽  
pp. 417-424
Author(s):  
J. G. McLEOD ◽  
J. M. CLARKE
Keyword(s):  
Secale Cereale ◽  
Water Concentration ◽  
Dry Weight ◽  
Test Mass ◽  
Winter Rye ◽  
Harvest Time ◽  
Drying Method ◽  
Falling Number ◽  
Secale Cereale L ◽  
Forced Air

Three winter rye (Secale cereale L.) cultivars, Cougar, Puma and Musketeer, were grown in a field experiment for 2 yr to determine the effects of kernel water concentration (KWC) at harvest time and drying method on final quality and grade of the grain. Plots were harvested when KWC was in the range of 950–100 g water kg−1 kernel dry weight. Grain was dried in windrows in the field and artificially in a forced-air oven at 40–45 °C. Kernel water concentration at harvest, test mass, kernel mass, falling number and germination were determined. Test mass increased as KWC at harvest decreased, especially in the artificially dried treatments. Kernel mass was lower when harvested at high KWC, especially in the windrowed treatments. Falling numbers were affected by harvest time and drying method, but trends were not clear. Germination was reduced by artificial drying at KWC greater than 430 g kg−1. Grades were not affected by windrowing at KWC up to 957 g kg−1. Artificial drying reduced commercial grades, especially at high KWC. The main degrading factors were presence of immature kernels and low test mass.Key words: Test mass, artifical drying, windrow, germination, falling number, harvest time

scholarly journals Field Studies on the Effect of Rye Cover Crop on Soybean Root Disease and Productivity

2021 ◽  
Author(s):  
Grazieli Araldi Da Silva ◽  
Gang Han ◽  
Yuba Raj Kandel ◽  
Daren S. Mueller ◽  
Matthew Helmers ◽  
...  
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Cropping Systems ◽  
Dry Weight ◽  
Field Studies ◽  
Winter Rye ◽  
Canopy Reflectance ◽  
Root Diseases ◽  
Shoot Dry Weight ◽  
Secale Cereale L

Cover crops improve soil and water quality in annual cropping systems, but knowledge of their impact on soybean (Glycine max L.) seedling and root diseases is limited. The effects of winter rye cover crops (Secale cereale L.) on soybean population, biomass, root morphology, seedling and root diseases, pathogen incidence, canopy reflectance, and yield were assessed over two years in Iowa and Missouri, USA. Plots without a rye cover crop were compared to plots with early-kill rye and late-kill rye cover crops, which were terminated 34 to 49 days or 5 to 17 days before soybean planting, respectively. Soybean shoot dry weight, root rot severity, and incidence of Fusarium spp. and Pythium spp. on roots were not influenced by the treatments. Soybean grain yield and plant population were reduced in the presence of rye in two site-years, increased in one site-year, and not changed in the remaining site-years. Soybean canopy reflectance was measured at 810 nm and measurements were first made at 70 to 80 days after planting (DAP). At least five measurements were obtained at 7- to 15- day intervals, ending at 120 to 125 DAP. Measurements at approximately 120 to 125 DAP differed by treatments but were not consistently associated with the presence or absence of a rye cover crop. Our field studies suggest that Iowa and Missouri soybean farmers can use winter rye as a cover crop in soybean fields with low seedling disease pressure without increasing the risk of seedling and root diseases or suppressing yield.

scholarly journals Blue Fescue Overseeding Improves Performance of Fairway Height Buffalograsses

HortScience ◽  
2009 ◽  
Vol 44 (5) ◽  
pp. 1444-1446
Author(s):  
Bekele G. Abeyo ◽  
Robert C. Shearman ◽  
Roch E. Gaussoin ◽  
Leonard A. Wit ◽  
Desalegn D. Serba ◽  
...  
Keyword(s):  
Stand Density ◽  
Early Spring ◽  
Winter Dormancy ◽  
Seeding Rate ◽  
Cool Season ◽  
Color Retention ◽  
Late Fall ◽  
Color Similarity ◽  
And Performance ◽  
Main Effects

Buffalograss [Buchloe dactyloides (Nutt.) Engelm.] use as a fairway turfgrass is limited in northern portions of its adaptation zone by its extended winter dormancy and tan coloration in early spring and late fall. Cool-season grasses mixed with buffalograss could enhance turfgrass appearance and performance in fall and early spring. Research was conducted near Mead, NE, with eight buffalograss genotypes maintained under fairway conditions to determine the effect of blue fescue (Festuca ovina L. var. glauca Lam.) overseeding rate on turfgrass performance. Interactions were nonsignificant in most cases so main effects are emphasized. Differences were observed between seeding rates and genotypes for most traits studied. Overseeding blue fescue enhanced spring green-up, fall color retention, stand density, and turfgrass quality. These effects were most pronounced in late fall and early spring, when buffalograss plants were entering or exiting winter dormancy. The 5 g·m−2 blue fescue overseeding rate improved all performance traits studied when compared with the nonoverseeded buffalograss control and was not different from the 10 g·m−2 seeding rate treatment. Thus, the 5 g·m−2 blue fescue overseeding rate appeared to be near optimum for overall turfgrass performance, offering reduced seed cost and decreased potential for species interference. The ‘Legacy’ buffalograss and ‘SR-3200’ blue fescue mixture had the best performance of the genotypes studied as a result of their visual compatibility in terms of color similarity.

Genetic variation for rate of establishment in caucasian clover

1998 ◽  
pp. 213-217
Author(s):  
K.H. Widdup ◽  
T.L. Knight ◽  
C.J. Waters
Keyword(s):  
Genetic Variation ◽  
Root Growth ◽  
Seedling Growth ◽  
White Clover ◽  
Seedling Emergence ◽  
Red Clover ◽  
Dry Weight ◽  
Cool Season ◽  
Trifolium Ambiguum ◽  
Root Dry Weight

Slow establishment of caucasian clover (Trifolium ambiguum L.) is hindering the use of this legume in pasture mixtures. Improved genetic material is one strategy of correcting the problem. Newly harvested seed of hexaploid caucasian clover germplasm covering a range of origins, together with white and red clover and lucerne, were sown in 1 m rows in a Wakanui soil at Lincoln in November 1995. After 21 days, the caucasian clover material as a group had similar numbers of emerged seedlings as white clover and lucerne, but was inferior to red clover. There was wide variation among caucasian clover lines (48-70% seedling emergence), with the cool-season selection from cv. Monaro ranked the highest. Recurrent selection at low temperatures could be used to select material with improved rates of seedling emergence. Red clover and lucerne seedlings produced significantly greater shoot and root dry weight than caucasian and white clover seedlings. Initially, caucasian clover seedlings partitioned 1:1 shoot to root dry weight compared with 3:1 for white clover. After 2 months, caucasian clover seedlings had similar shoot growth but 3 times the root growth of white clover. Between 2 and 5 months, caucasian clover partitioned more to root and rhizome growth, resulting in a 0.3:1 shoot:root ratio compared with 2:1 for white clover. Both clover species had similar total dry weight after 5 months. Unhindered root/ rhizome devel-opment is very important to hasten the establishment phase of caucasian clover. The caucasian clover lines KZ3 and cool-season, both selections from Monaro, developed seedlings with greater shoot and root growth than cv. Monaro. KZ3 continued to produce greater root growth after 5 months, indicating the genetic potential for improvement in seedling growth rate. Different pasture estab-lishment techniques are proposed that take account of the seedling growth characteristics of caucasian clover. Keywords: establishment, genetic variation, growth, seedling emergence, Trifolium ambiguum

THE EFFECT OF ANTECEDENT FREEZE-THAW FREQUENCY ON RUNOFF AND SOIL LOSS FROM FROZEN SOIL WITH AND WITHOUT SUBSOIL COMPACTION AND GROUND COVER

1989 ◽  
Vol 69 (4) ◽  
pp. 799-811 ◽  
Author(s):  
LINNELL M. EDWARDS ◽  
J. R. BURNEY
Keyword(s):  
Prince Edward Island ◽  
Sandy Loam ◽  
Bare Soil ◽  
Winter Rye ◽  
Rainfall Simulator ◽  
Fine Sandy Loam ◽  
Freeze Thaw ◽  
Sediment Loss ◽  
Freezing Period ◽  
Subsoil Compaction

Three soils from Prince Edward Island (a loam, a fine sandy loam, and a sandy loam) were tested under a laboratory rainfall simulator to examine the effects of frequency of freezing and thawing, winter rye cover, incorporated cereal residue, and subsoil compaction on runoff volume and sediment loss. Wooden soil boxes were subjected to simulated rain (i) at the end of a 10-d freezing period, and (ii) at the end of the 5th 24-h freezing period of a 10-d alternating freeze-thaw cycle (freeze/thaw). Where the soil was continuously frozen for 10 d, there was 178% greater sediment loss and 160% greater runoff than with daily freeze/thaw over the same period, but there was no difference in sediment concentration. Incorporated cereal residue decreased sediment loss to 50% and runoff to 77% of that from bare soil. Winter rye cover decreased sediment loss to 73% of that from bare soil. Simulated soil compaction caused a 45% increase in sediment loss. The loam soil showed 16.5% greater loss of fine sediment fractions <0.075 mm than the fine sandy loam which showed 23.4% greater loss than the sandy loam. Key words: Freeze-thaw, erosion, compaction, winter rye, cereal residue, rainfall simulator, Prince Edward Island soils

Relationships between cover performance and date of fall-seeding where winter rye was broadcast into a standing potato crop

1992 ◽  
Vol 72 (1) ◽  
pp. 269-274
Author(s):  
Linnell M. Edwards ◽  
John M. Sadler
Keyword(s):  
Cover Crops ◽  
Potato Crop ◽  
Ground Cover ◽  
Dry Mass ◽  
Winter Survival ◽  
Winter Rye ◽  
Winter Ground ◽  
Post Harvest

Winter rye was broadcast into a potato crop just after topkilling with the object of avoiding post-harvest delays in establishing a winter ground cover. Rye treatments were interseeded (i) at intervals of 1 d for up to 10 d before potato digging, without post-harvest tillage and (ii) just after digging and preparatory seedbed tillage as a comparative standard. Generally, cover performance of rye, measured as plant count, tiller count or dry mass of plants showed significant (P < 0.05) increase with decreasing days to potato digging up to 3 or 4 d before digging. There was no sacrifice of rye cover using this inter-seeding approach compared with traditional post-(potato) harvest seeding in a prepared seedbed. Seeding 3–4 d before potato harvest is recommended on the basis of superior fall plant count, spring tiller count and shoot dry mass, and winter survival indices on either of these days.Key words: Cover crops, winter rye, winter survival, companion cropping

scholarly journals Grain filling parameters in high-yielding ns wheat cultivars

2008 ◽  
pp. 53-58
Author(s):  
Milka Brdar ◽  
Marija Kraljevic-Balalic ◽  
Borislav Kobiljski
Keyword(s):  
Multivariate Analysis ◽  
Nonlinear Regression ◽  
Environmental Conditions ◽  
Dry Weight ◽  
Grain Filling ◽  
Grain Weight ◽  
Cultivar Differences ◽  
Wheat Cultivars ◽  
Estimated Parameters ◽  
Grain Filling Duration

Grain yield of wheat is dependent on grain weight, which is the result of grain filling duration and rate. The study was undertaken to examine the relation between grain weight and rate and duration of grain filling in five high-yielding NS wheat cultivars. Stepwise multivariate analysis of nonlinear regression estimated grain filling parameters was used to examine cultivar differences in grain filling. On the basis of three-year average, the highest grain dry weight had cultivar Renesansa, and the lightest grains were measured for cultivar Evropa 90. Stepwise multivariate analysis indicated that all three nonlinear regression estimated parameters (grain weight, rate and duration of grain filling) were equally important in characterizing the grain filling curves of the cultivars studied, although sequence of their significance varied in different years, which is probably caused by different environmental conditions in three years of experiment.

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