scholarly journals PLANTING DATE EFFECT ON PIGEONPEA DEVELOPMENT IN MID-MISSOURI

HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 494g-495
Author(s):  
Lurline Marsh ◽  
Mohsen Dkhili
Keyword(s):  
Field Study ◽  
Temperature Region ◽  
Cajanus Cajan ◽  
Growth And Development ◽  
Growing Season ◽  
Planting Date ◽  
Planting Dates ◽  
Pod Length ◽  
Number Of Seeds ◽  
Short Growing Season

Determinate, photoperiod-insensitive genotypes of pigeonpea, (Cajanus cajan) have the potential for production in the short growing season of the temperature region. A field study was conducted to determine the effect of three planting dates on the growth and development of this crop in Missouri. Seeds of four genotypes, ICPL 87 Isolation (85k), ICPL 85010, ICPL 85024 and ICPL 8304 were planted at three planting dates in 1990, May 1, May 15 and May 31. Germination of the earliest planted seeds was low but increased in the later planted ones. The earlier the planting date the longer was the time to flowering, but the earlier was pod maturity. The earliest planted group flowered within 78-110 days after planting. The genotypes in this group produced the highest fresh pod weights of 330-730 g/plant and the latest planted ones produced the least. Pod length, the number of seeds per pod and weight of 100 seeds had ranges of 5.1-5.9 cm, 3-4 seeds and 17-23 g, respectively and were unaffected by planting dates.

scholarly journals Dormant Sprigging of Bermudagrass and Zoysiagrass

2021 ◽  
pp. 1-10
Author(s):  
Juming Zhang ◽  
Michael Richardson ◽  
Douglas Karcher ◽  
John McCalla ◽  
Jingwen Mai ◽  
...  
Keyword(s):  
Field Study ◽  
Cynodon Dactylon ◽  
Growing Season ◽  
Early Summer ◽  
Planting Date ◽  
Late Spring ◽  
Zoysia Japonica ◽  
Planting Dates ◽  
Dormant Season ◽  
Sod Production

Many bermudagrass (Cynodon sp.) and zoysiagrass (Zoysia sp.) cultivars are not available as seed and are commonly planted vegetatively using sprigs, especially for sod production or in sand-based systems. Sprig planting is typically done in late spring or early summer, but this can result in an extended grow-in period and delay the use of the turf in the first growing season. The objective of this study was to determine if sprigs of bermudagrass and zoysiagrass could be planted earlier in the year, during the dormancy phase, to hasten establishment. A field study was carried out in Fayetteville, AR, in 2014 and 2016 using ‘Tifway’ hybrid bermudagrass (Cynodon dactylon × Cynodon transvaalensis) and ‘Meyer’ zoysiagrass (Zoysia japonica), and in Guangzhou, China, in 2015, using ‘Tifway’ hybrid bermudagrass and ‘Lanyin III’ zoysiagrass (Z. japonica). Sprigs were planted in March (dormant), May (spring) and July (summer) in Fayetteville, and in January (dormant), March (spring) and May (summer) in Guangzhou. Sprigging rates of 30, 60, and 90 m3·ha−1 were tested at both locations and across all planting dates. Bermudagrass was less affected by planting date, with dormant, spring or summer plantings effectively establishing full cover in the first growing season. Zoysiagrass that was sprigged in the dormant season was successfully established by the end of the first growing season while a full zoysiagrass cover was not achieved with either spring or summer plantings in Arkansas. Dormant sprigging reached full coverage as fast or faster than traditional spring or summer planting dates at both locations, indicating that bermudagrass and zoysiagrass establishment can be achieved earlier in the growing season using dormant sprigging methods.

scholarly journals 188 Influence of Planting Date on Strawberry Growth and Development in the Low Desert

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 474E-474
Author(s):  
M.A. Maurer ◽  
K. Umeda
Keyword(s):  
Field Study ◽  
Growth And Development ◽  
Fruit Size ◽  
Planting Date ◽  
The Other ◽  
Growth And Yield ◽  
Planting Dates ◽  
Fruit Number ◽  
Significant Difference ◽  
Strawberry Cultivars

A field study was designed to determine the effect of planting date and cultivar on growth and yield of strawberries in the low desert. The study was conducted at the Univ.of Arizona, Citrus Agricultural Center, near Waddell. Treatments included two strawberry cultivars (Camarosa and Chandler) and three planting dates 20 Aug. and 8 and 22 Oct. 1997. There was no significant difference in fruit yield between cultivars. However, fruit number was significantly greater for `Chandler', and, therefore, fruit size was smaller than `Camarosa.' Yield was significantly higher for strawberries planted 20 Aug., with nearly four times the yield compared to the other planting dates. Results of this study suggest summer planting of strawberries in the low desert to produce economically viable yields.

scholarly journals Planting-date Effects on Early maturing Pigeonpea in a Short-season Environment

1994 ◽  
Vol 4 (4) ◽  
pp. 379-382 ◽  
Author(s):  
Lurline Marsh
Keyword(s):  
Cajanus Cajan ◽  
Growth And Development ◽  
Planting Date ◽  
Degree Days ◽  
Production Potential ◽  
Temperate Region ◽  
Planting Dates ◽  
Growing Seasons ◽  
Early Maturing ◽  
Short Season

Determinate, photoperiod-insensitive genotypes of pigeonpea [Cajanus cajan (L.) Millsp.] have production potential for the short growing seasons of the temperate region. A 3-year field study was conducted to determine the effect of three planting dates on the growth and development of pigeonpea in Missouri. Seeds of four genotypes, ICPL 87 Isolation (85k), ICPL 85010, ICPL 85024, and ICPL 8304 were planted 1 May (PD1), 15 May (PD2), and 1 June (PD3). Germination of the earliest-planted seeds was <32%, but increased to an average of 57% for PD3. Earliest-planted seeds generally took the longest time to first flowering and harvest. The initial fresh pod harvest of plants from PD1 and PD2 overlapped. The earliest harvest was produced by ICPL 85024 from PD2 at 91 days (1300 degree-days C) after planting. Over the 3 years, the genotypes in PD1 produced the highest fresh pod weights (205-357 g/plant) and longest pods. Those of PD3 produced the lowest pod weight. The seed number per pod (three to four) and weight of 100 seeds (16-22 g) were generally unaffected by planting dates.

Planting Date Affects Survival and Height Growth of Hybrid Poplar

1986 ◽  
Vol 62 (3) ◽  
pp. 164-169 ◽  
Author(s):  
Edward A. Hansen
Keyword(s):  
Hybrid Poplar ◽  
Late Summer ◽  
Growing Season ◽  
Climatic Conditions ◽  
Planting Date ◽  
Planting Dates ◽  
Soil Frost ◽  
Growing Seasons ◽  
Poplar Cuttings ◽  
Energy Plantations

In this study I investigated the effects of planting date for soaked versus unsoaked cuttings of two hybrid poplar clones under irrigated versus unirrigated and weedy versus weed-free conditions. Cuttings were planted each year for 4 years. Survival at the end of the first growing season was generally greater than 90% for all planting dates. At the end of the second growing season survival for trees planted before July 16 was again generally more than 90%. However, cuttings planted from July 30 through August 27 showed a major decline in survival and survival of fall planted cuttings ranged from 6 to 90%. Mortality of late summer- or fall-planted cuttings occurred prior to the beginning of the second growing season and was attributed to frost heaving. The tallest trees were not those planted at the earliest possible dates (April in Rhinelander). Instead, the tallest trees at the end of the first and second growing seasons were those planted in early- and mid-May. This optimum planting period was the same regardless of clone, soaking, irrigation, or weed treatment. Actual optimum planting date would change with location and local climatic conditions. Some climatic indices may prove more universal in predicting when to plant. Although tentative, it appears that for best growth, unrooted hybrid poplar cuttings should be planted in soil warmer than 10 °C. Trees do not grow as well if planted immediately after soil frost leaves the ground. Key words: Energy plantations, plantation establishment, woody biomass, intensive culture, Populus.

scholarly journals Effects of planting time on growth, development and productivity of maize (Zea mays L.)

2018 ◽  
Vol 1 (1) ◽  
pp. 43-50
Author(s):  
Jiban Shrestha ◽  
Manoj Kandel ◽  
Amit Chaudhary
Keyword(s):  
Growth And Development ◽  
Crop Production ◽  
Disease Incidence ◽  
Grain Filling ◽  
Planting Date ◽  
Crop Modeling ◽  
Planting Dates ◽  
Late Planting ◽  
Maize Growth ◽  
Growth Development

Planting date plays important role in the growth, development and yield of maize. Optimum planting date has becomes a prime importance for higher crop production. The plant establishment as well as pest and disease incidence are affected by planting dates. Crop varieties respond differently to planting dates. Early or late planting dates on maize causes an array of morpho-anatomical, physiological and biochemical changes in plants, which affect plant growth and development and such changes may lead to a drastic reduction in yield. Maize growth and development involves numerous biochemical reactions which are sensitive to variance in weather parameters as affected by planting dates. Delayed planting dates affect traits namely anthesis silking interval, photosynthesis, physiological maturity and dry matter production due to reduction in cumulative interception of photosynthetically active radiation (PAR). Late planting dates cause higher non-structural carbohydrate concentration in stems at mid-grain filling stages due to low temperature exposure of crop limiting kernel growth and photosynthesis. The adverse effects of delayed planting dates can be mitigated by forecasting optimum planting dates through crop modeling experiments. This article summarizes various effects of planting dates on maize growth, development and yield parameters. This information may be useful for maize growers and researchers.

Effet de la date de semis sur la productivité du lin oléagineux cultivé en climat frais

2011 ◽  
Vol 91 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Denis Pageau ◽  
Julie Lajeunesse
Keyword(s):  
Growing Season ◽  
Planting Date ◽  
Planting Dates ◽  
Grain Yields ◽  
Linum Usitatissimum L ◽  
Seeding Date ◽  
Sowing Dates ◽  
1000 Grain Weight ◽  
Late Sowing ◽  
Cool Climate

Pageau, D. and Lajeunesse, J. 2011. Effect of seeding date on oilseed flax grown in a cool climate. Can. J. Plant Sci. 91: 29–35. In Quebec, the growing season is relatively short and most crops are sown early in the spring. However, flax (Linum usitatissimum L.) production is recent in Quebec and the effect of time of seeding on flax productivity has not yet been studied. The objective of this project was to determine the effect of four different sowing dates on the productivity of oilseed flax grown in a cool climate in Quebec. Four planting dates (mid-May to mid-June) were evaluated for 4 yr (2004, 2006, 2007 and 2008) with four cultivars (AC Emerson, AC McDuff, CDC Bethune and Lightning). During 2 yr, delays in seeding reduced grain yields. Moreover, in 2006 and 2007, flax seeded at the last planting date (mid-June) did not reach maturity. Compared with the earliest seeding date, a 2-wk delay in sowing reduced grain yields by 34 to 42% in 2006 and by 25 to 51% in 2007. Late sowing also reduced the oil content and 1000-grain weight of flax. These results indicate that oilseed flax should be sown early (11–18 May) in regions where the climate is cool.

Optimal planting date, row width, and critical weed-free period for grain amaranth and quinoa grown in Ontario, Canada

2016 ◽  
Vol 96 (3) ◽  
pp. 360-366 ◽  
Author(s):  
Robert E. Nurse ◽  
Kristen Obeid ◽  
Eric R. Page
Keyword(s):  
Weed Control ◽  
Critical Period ◽  
Yield Loss ◽  
Growing Season ◽  
Planting Date ◽  
Planting Dates ◽  
Southern Ontario ◽  
Grain Amaranth ◽  
Physiological Maturity ◽  
Row Width

The popularity of grain amaranth and quinoa is growing in Ontario, increasing the interest in their cultivation. Two experiments were conducted in southern Ontario in 2013 and 2014 to evaluate optimal planting date (every two weeks from early May to late July), row width (38 or 75 cm), and critical weed-free period (the component of the critical period of weed control that defines the number of days that the crop must remain weed-free to prevent yield loss) in each crop. Grain amaranth and quinoa both reached physiological maturity and produced yields when planting dates ranged from mid-May to late-June. When either crop was seeded in July, yields decreased by more than 50% and the crop did not always reach maturity before the first frost. While row width did not have an impact on yield, it is advisable to grow the crops in wider rows (75 cm) to facilitate weed control early in the growing season (up to 30 d after emergence (DAE)). The critical weed-free period was 24 and 16 DAE for grain amaranth and quinoa, respectively, after which yields were maintained at 95% of the weed-free control. Based on these data, both crops could easily be integrated into the normal cropping rotations found in southern Ontario.

Influence of Soybean (Glycine max)Planting Date on Velvetleaf (Abutilon theophrasti)Competition

Weed Science ◽  
1979 ◽  
Vol 27 (2) ◽  
pp. 183-188 ◽  
Author(s):  
L. R. Oliver
Keyword(s):  
Glycine Max ◽  
Growth And Development ◽  
Early Growth ◽  
Photoperiodic Response ◽  
Planting Date ◽  
Abutilon Theophrasti ◽  
Growth Stages ◽  
Planting Dates ◽  
Late Planting ◽  
Early Maturing

A 2-yr study was conducted to determine the influence of early and late soybean [Glycine max(L.) Merr.] planting dates on the competitiveness of velvetleaf (Abutilon theophrastiMedic). Velvetleaf was planted at densities of one plant per 61 and 30 cm of row, and competition ranged from 4 weeks to full season. Soybean planting dates were mid-May and late-June. Velvetleaf emerging with soybeans in mid-May were twice as competitive as those emerging with soybeans planted in late-June. A density of one velvetleaf per 30 cm of row competing full season reduced soybean yields 27% for the early and only 14% for the late planting date. The competitive difference was due to the short-day photoperiodic response of velvetleaf. Although the early growth stages of soybeans are more competitive than those of velvetleaf, 10 weeks after emergence velvetleaf competition reduced soybean growth and development. Velvetleaf does not appear to be a potential major problem in Arkansas for soybeans planted in June due to its photoperiodic response and late season competitiveness. However, the weed could present problems for soybeans planted early, especially when an early maturing variety is used.

scholarly journals Yield and Isoflavone Content of Edamame Varieties at Different Planting Dates and Densities

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 986D-987
Author(s):  
Allison E. Stewart ◽  
Debra J. Carpenter ◽  
Vincent R. Pantalone ◽  
Carl E. Sams
Keyword(s):  
Planting Date ◽  
Fresh Weight ◽  
Planting Dates ◽  
Highest Weight ◽  
Horticultural Traits ◽  
Isoflavone Content ◽  
Reported Health ◽  
Research And Education ◽  
Number Of Seeds ◽  
Total Fresh Weight

Consumer interest in Edamame (edible soybean) is increasing due to reported health benefits associated with diets high in soy. The purpose of this study was to compare four varieties of edible soybean grown at four plant spacings on three planting dates. The lines were grown at the Plateau Research and Education Center in Crossville, Tenn. They were analyzed for horticultural traits and isoflavone content. All lines were at the R6 stage. Fresh weight of pods, weight of 200 pods per plot, the number of seeds per 200 pods, and the weight of 100 seeds were recorded from two-row plots (6.10 m x 1.52 m). A significant (P < 0.001) difference was found for fresh weight among planting dates. The May planting had the highest mean fresh weight (3118 g/plot), followed by the June (3068 g/plot) and July (2131 g/plot) dates. The weight per 100 seeds was significantly different (P < 0.001) for planting date and genotype. May seed weight was highest at 49 g, followed by June at 45 g, and July at 42 g per 100 seeds. `Gardensoy-43' was the highest-yielding variety, with a mean of 3253 g/plot. It was followed by `TN00-60' and `TN03-349', with mean fresh weights of 2730 and 2723 g/plot, respectively. The line `TN5601T' had the lowest mean fresh weight of 2389 g/plot. Both fresh weight (P < 0.001) and weight per 100 seeds (P < 0.05) were significantly different among plant spacings. Twenty-six plants per meter within rows yielded the highest total fresh weight per plot (3071 g), but had the lowest mean weight per 100 seeds (43 g). Spacing three plants per meter within rows resulted in the highest weight per 100 seeds (48 g), but the lowest fresh weight per plot (2122 g). Isoflavone content will be measured for each variety, planting date, and spacing.

Features of studying of introduced soy samples (Glycine max. (L.) Merr.) in the conditions of irrigation of the south of Ukraine

2018 ◽  
pp. 40-48
Author(s):  
R.A. Vozhehova ◽  
V.O. Borovik ◽  
I.A. Bindina ◽  
D.K. Rubtsov ◽  
T.Yu Marchenko
Keyword(s):  
Selection Process ◽  
Growing Season ◽  
Close Correlation ◽  
Economic Traits ◽  
Economically Valuable Traits ◽  
The Usa ◽  
Glycine Max L ◽  
Growing Conditions ◽  
Number Of Seeds ◽  
Short Growing Season

Goal. The study of introduced soybean samples to isolate genetic sources of the main biological and economically valuable traits for further use in the breeding process. Results and Discussion. The article highlights the results of research for 2016-2018. study of introduced soybean samples for a complex of economically valuable traits. The samples origin from Ukraine (17), Canada (.), Australia, France (2 each) and the USA (1 sample). According to the results of the research, the sources of valuable economic traits were identified: with very short growing season, seedlings-full ripeness (98 days) –Marysia (UKR), short (101 – 120 days) – 14 samples; yield excess in relation to the standard – 6 samples. Among the varieties studied in 2018 for ultra-ripeness and yield, the Samorodok and Zhemchuzhyna varieties were stood out. The level of relationships between the main elements of sample productivity has been established. Common to all varieties was the closest connection between the number of seeds per plant and productivity, which was within r = 0.76 – 0.97, exept Triada varietiy. A close correlation between productivity and the number of nodes (r = 0.91) was established for the Samorodok variety, between productivity and the diameter of the first interstice (r = 0.93) – for the Feieriia variety. The established level of links between the main elements of the productivity of samples, which are planned to be used later in the breeding work, for the development of a model of varieties. Conclusions. Attraction of new soybean samples to the collection, their study and application in the selection process is the way to create high-yielding, adapted to irrigated growing conditions, resistant to diseases and the occurrence of soybean varieties that meet the requirements of producers.

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