INFLUENCE OF SOWING DATES AND SEEDING RATES ON EGYPTIAN CLOVER FORAGE AND SEED YIELDS UNDER EL-SERW ENVIRONMENT

2019 ◽  
Vol 34 (12) ◽  
pp. 214-232
Keyword(s):  
Egyptian Clover ◽  
Sowing Dates ◽  
Seed Yields

scholarly journals Efect of sowing dates and seed rates of flax intercropped with sugar beet on productivity of both crops and competitive relationships

2021 ◽  
Vol 26 (6) ◽  
pp. 3074-3089
Author(s):  
ASEM M. K. ABD-RABBOH ◽  
YASER MAZROU ◽  
AMAL M. A. EL-BORHAMY ◽  
WILLIAM K. L. ABDELMASIEH ◽  
YASER HAFEZ ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Maximum Yield ◽  
Sowing Date ◽  
Economic Return ◽  
Zone Length ◽  
Yield And Quality ◽  
Sowing Dates ◽  
Yield Quality ◽  
Seed Yields ◽  
Flax Straw

The aim of intercropping flax on sugar beet is to increase the cultivated area with flax due to widely cultivated area of sugar beet. So, a field experiment was carried out to study the effect of various sowing dates and seed rates of flax intercropped with sugar beet on yield, quality and economic evaluation. The main-plots were assigned to three sowing dates of flax intercropped with sugar beet and the sub-plots were allocated to four seed rates of flax. The results show that sowing date of flax after 35 days from sowing (DFS) sugar beet resulted in the highest values of sugar beet yields and quality. Maximum values of flax straw and seed yields resulted from sowing flax after 21 DFS sugar beet. Intercropping sugar beet with flax at 12.5% from recommended seed rate on top sugar beet terraces attained the most elevated values of sugar beet yield and quality. Sowing flax at 50% from recommended rate resulted in the best values of flax technical and fruiting zone length, also straw and seed yield/hectare. The maximum yield and economic return of both crops were obtained from sowing flax at 12.5% from recommended rate after (21 or 35) DFS sugar beet.

Comparison of the effects of autumn and spring sowing date on growth and yield of combining peas (Pisum sativutn L.)

1985 ◽  
Vol 104 (1) ◽  
pp. 35-46 ◽  
Author(s):  
S. N. Silim ◽  
P. D. Hebblethwaite ◽  
M. C. Heath
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Sowing Date ◽  
Winter Survival ◽  
Growth And Yield ◽  
Yield Data ◽  
Matter Production ◽  
Sowing Dates ◽  
Seed Yields ◽  
Spring Sowing

SummaryExperiments were conducted between 1978 and 1981 to investigate the effect of autumn and spring sowing on emergence, winter survival, growth and yield of combining peas (varieties ‘Frimas’, ‘Filby’ and ‘Vedette’). Effects of growth regulator PP 333 (Paclobutrazol, ICI pic) application and defoliation on winter survival of Filby were also investigated. Field emergence of autumn-sown Frimas (winter hardy) was less than Vedette or Filby but percentage winter survival was greater. PP 333 application, but not defoliation, increased percentage winter survival of Filby sown in September. Total dry-matter production and photosynthetic area of autumn- compared with spring-sown crops varied considerably between seasons. Yield data indicated that autumn-sown crops produce similar seed yields to spring sowings when winter survival is adequate. November sowings matured 2–4 weeks before March-sown crops, depending on variety and season. Optimum sowing dates were mid-November and early March. Large seed-yield reductions occurred when sowing was delayed until mid-April.

Influence of time of sowing and last cut for fodder on the fodder and seed yields of Egyptian clover

2000 ◽  
Vol 134 (3) ◽  
pp. 285-291 ◽  
Author(s):  
VIRENDER SARDANA ◽  
SHAMSHER SINGH NARWAL
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Trifolium Alexandrinum ◽  
Percentage Increase ◽  
Sowing Time ◽  
Egyptian Clover ◽  
Field Investigations ◽  
Green Fodder ◽  
Fodder Yield ◽  
Seed Yields

Field investigations were conducted during the winter seasons of 1992/93 and 1993/94 to find the optimum sowing time and time of last fodder cut for the fodder and seed production of Egyptian clover (Trifolium alexandrinum L.). The delay in sowing from 1 October to 15 November decreased the green and dry fodder yields but increased the seed yields. Total green and dry fodder yields (of all cuttings) for 1 or 15 October sowings were significantly higher than the 15 November sowing in both years and 1 November sowing in 1992/93. Increase in seed yield from the 15 November sowing was greater than from the 1 and 15 October sowings. Straw yields followed similar trends. Delay in the last cut for fodder, however, increased green and dry fodder yields but decreased the seed yield. The percentage increase in dry fodder yield with each successive delay in last cut for fodder was higher than that of green fodder yield. The 11 April cutting date of fodder produced the highest green and dry fodder yields but the lowest seed yield. Two years mean data showed that the 2 March cutting date of last fodder gave the highest seed yield. It is concluded that higher seed yield of Egyptian clover can be produced by sowing on 15 November and giving the last fodder cutting on 2 March.

Seed yield and yield stability of determinate and indeterminate autumn-sown white lupins (Lupinus albus) grown at different locations in France and the UK

1993 ◽  
Vol 121 (2) ◽  
pp. 177-186 ◽  
Author(s):  
B. Julier ◽  
C. Huyghe ◽  
J. Papineau ◽  
G. F. J. Milford ◽  
J. M. Day ◽  
...  
Keyword(s):  
Lupinus Albus ◽  
Second Order ◽  
Summer Drought ◽  
Sowing Dates ◽  
Dry Conditions ◽  
Plant Densities ◽  
Mean Size ◽  
Growing Conditions ◽  
The Uk ◽  
Seed Yields

SUMMARYThe seed yields and maturity dates of an indeterminate cultivar (Lunoble) and a determinate line (CH304/70) of Lupinus albus L. were measured at three locations in France (Lusignan, Dijon and Gotheron) and at Rothamsted, UK, in 1989/90 and 1990/91. Different combinations of sowing dates, plant densities and irrigation treatments were tested at some sites.Averaged over all sites, CH304/70 yielded more than Lunoble (3·26 v. 2·98 t/ha) but there were significant genotype × location interactions for yield and date of maturity. Both genotypes gave similar yields at the three locations in France (3·13 and 3·06 t/ha, respectively). But under the cool and wet conditions at Rothamsted, CH304/70 yielded 4·26 t/ha compared with only 202 t/ha for Lunoble. Yields of CH304/70 were more stable than those of Lunoble across locations and years; the coefficients of variation about the overall means were 14 and 22%, respectively. CH304/70 ripened up to 16 days sooner than Lunoble in France, and 6 weeks earlier than Lunoble in the cooler conditions of the UK.In wet growing conditions (Lusignan 1989/90, Rothamsted 1990/91) Lunoble had increased vegetative growth which decreased the proportion of yield produced by mainstem pods and correspondingly increased the proportion borne on second-order branches. This continued branching also delayed harvest, especially in the UK where the crop was not harvestable until early November. In these conditions, CH304/70 outyielded Lunoble at Lusignan (3·4 v. 2·7 t/ha) and at Rothamsted (4·3 v. 2·0 t/ha) and was harvested acceptably early in mid-September. However, under warm, dry conditions, Lunoble produced only one order of branches at Gotheron and two orders at Lusignan in 1990/91. At Gotheron, both genotypes matured at the same time but CH304/70 yielded slightly better (3·1 v. 2·8 t/ha) because it produced a higher proportion of its yield on the mainstem, whereas at Lusignan, Lunoble yielded better than CH304/70 (4·1 v. 3·4 t/ha) because of extra yield from pods on second-order branches.CH304/70 produced seeds of larger mean size and had greater stability of seed size across years and locations than Lunoble did. This was apparently the result of CH304/70's determinate structure, in which c. 75–100% of the yield was from pods on the mainstem and first-order branches, whose seeds were larger and less variable in size than those from pods on higher-order branches of indeterminates.The development of autumn-sown genotypes with a determinate structure that combine adequate yield and early harvest under cool conditions offers the prospect of extending the geographical range of lupins, grown for grain, both to the cool regions of northern Europe and to hotter and drier regions in southern Europe where summer drought limits the yield of conventional indeterminate types.

INFLUENCE OF PLANTS MINERAL NUTRITION ON PROTEIN CONTENT IN SOYBEAN SEEDS

1970 ◽  
pp. 69-72
Author(s):  
V. T. Sinegovskaya ◽  
Е. T. Naumchenko ◽  
I. V. Anufrieva
Keyword(s):  
Protein Content ◽  
Mineral Fertilizer ◽  
Close Correlation ◽  
Mineral Fertilizers ◽  
Soybean Seeds ◽  
Hydrothermal Coefficient ◽  
Sowing Dates ◽  
Permafrost Soils ◽  
Fertilizer System ◽  
Seed Yields

The effect of prolonged use of mineral fertilizers on the supply of plants with nutrients and protein content in soybean seeds, on seasonally permafrost soils of the Amur Region was studied. The studies were carried out in a long stationary experiment of five-field crop rotation with 40% saturation of soybeans and 60% with cereals (oats and wheat).It was found that, on average, for five years, the introduction of N30P60 before sowing as a result of prolonged use of the organo-mineral fertilizer system led to an increase in protein content in soybean seeds by 0.4% relative to this parameter in control, without fertilizer. A substantially close correlation was found between the protein content in soybean seeds and the amount of precipitation and Selianinov’s Hydrothermal coefficient of moisture during the stages of bean formation - full seed (R = 0.841 - 0.928, with Rcrit. = 0.754).In this regard, to increase the content and accumulation of protein in soybean seeds, strict observance of the sowing dates of soybean varieties is necessary so that the period of growth plants formation of beans - full seed held in a favorable hydrothermal regime. Under such conditions, the use of nitrogen - phosphorus mineral fertilizers in a long experience ensured the biological productivity of soybeans from 4.1 to 4.4 t / ha, depending on the level of plant nutrition with N and P. There was only a tendency towards an increase in seed yields and protein collection per unit of the sown area when phosphate fertilizers were added at a dose of 60 kg/ha.

scholarly journals Impact of planting timing on seed yields and productive longevity of eastern goat rue (Galega orientales Lam)

2021 ◽  
Vol 901 (1) ◽  
pp. 012019
Author(s):  
V N Zolotarev
Keyword(s):  
Seed Yield ◽  
Growth And Development ◽  
First Year ◽  
Climatic Zones ◽  
Fodder Crop ◽  
Air Temperatures ◽  
Sowing Dates ◽  
Second Year ◽  
Moisture Conditions ◽  
Seed Yields

Abstract Eastern goat’s rue (Galega orientales Lam.) has a complex of economically useful features, which makes it a priority introduced fodder crop in different soil and climatic zones. The initial stages of ontogenesis determine the development of plants and the amount of seed yield of goat’s rue for the next year. In the first year, goat’s rue plants develop slowly, which requires its early sowing. It was found that the highest fullness of sprouts in the range of 50-61% was noted when goat’s rue was sown in the period from May 25 to June 5. Moisture conditions of vegetation seasons have a decisive influence on growth and development of plants in the year of sowing and their preservation during the overwintering period. The highest yield of seeds in the 1st year of using was when sowing goat’s rue from the beginning of May to the middle of the first decade of June which provided accumulation of the sum of effective air temperatures 1409,5-1125,00C and amount of precipitation within the range 373,9-335,7 mm from shoots to the end of vegetation in the year of sowing and 1208,30C with 274,9 mm of precipitation in the second year before harvesting. The highest seed yields in the range of 466-560 kg/ha yieldwere obtained from goat’s rue crops of May and June sowing dates. The influence of sowing dates on seed yields was evident during the first two years. In subsequent years, the value of seed yield is leveled.

scholarly journals Вплив строків сівби на продуктивність гречки

2018 ◽  
pp. 166-171
Author(s):  
М. С. Ульянченко
Keyword(s):  
Grain Size ◽  
Sowing Date ◽  
Fagopyrum Esculentum ◽  
Air Separation ◽  
Forest Steppe ◽  
Average Value ◽  
Sowing Dates ◽  
Fagopyrum Esculentum Moench ◽  
Exact Effect ◽  
Seed Yields

На фоні нестабільних погодних умов весняного періоду, що відмічаються останнім часом, встановлення оптимальних строків сівби районованих сортів гречки набуває актуального значення. У статті експериментальним шляхом вивчали шість сортів гречки (Fagopyrum esculentum Moench) вітчизняної селекції: Ярославна, Слобожанка, Руслана, Українка, Крупинка, СИН-3/02 залежно від строків сівби в умовах нестійкого зволоження центрального Лісостепу. Для проведення досліджень використовували загальноприйняті та спеціальні методики: продуктивність сортів гречки та аналіз зернового матеріалу за елементами продуктивності визначали після очищення зерна методом повітряної сепарації та перерахунку на стандартну 14 % вологість. Для умов 2015 року встановлено, що елементи продуктивності гречки (крупність та кількість зерен з рослини) мають суттєвий вплив на формування продуктивності культури. За масою 1000 зерен виокремилися сорт Крупинка за раннього строку сівби, суттєво менші значення отримали за цим показником у сортів Слобожанка та Українка, відповідно, за сівби в перший та другий строк. Усі інші сорти за крупністю зерна мали середнє значення. Строки сівби сорту СИН-3/02 не мали впливу на елементи продуктивності. В умовах 2016 року за крупністю зерна виокремилися сорти Ярославна, Руслана та Крупинка за раннього та середнього строків сівби. Всі сорти, що  вивчалися, забезпечили вищу крупність зерна за раннього строку сівби, за виключенням сортів Ярославна та Українка. За результатами дворічних досліджень визначено, що ранньостиглі сорти гречки Ярославна і Руслана доцільно висівати з середини першої декади травня. Сорти Слобожанка і Крупинка формують найбільшу продуктивність за сівби в перший та другий строк. Чіткого впливу терміну сівби на даний показник у сортів СИН-3/02 та Українка не виявлено. The set of optimal sowing dates of the buckwheat is to the actual value on the background of unstable weather of the springtime. In the article, six species of buckwheat (Fagopyrum esculentum Moench) of domestic breeding: Yaroslavna, Slobozhanka, Ruslana, Ukrainka, Krupynka, SIN-3/02 were studied experimentally, depending on the time of sowing in conditions of unstable moisture of the Central Forest-Steppe. For research, conventional methods and special methods were used: productivity of buckwheat varieties and analysis of grain material by the elements of productivity were determined after purification of the grain by air separation method and converted to a standard 14 % moisture content. For the 2015 conditions it has been established that the elements of the buckwheat productivity: the size and number of grains from the plant have a significant effect on the formation of the productivity of the crop. By weight of 1000 grains, Krupynka variety was distinguished at early term sowings; significant lower values ​​were obtained for this variety in Slobozhanka and Ukrainka, respectively for sowing in the first and second terms. All other varieties according to grain size had an average value. The lines of sowing of the variety SIN-3/02 did not influence the elements of productivity. In the conditions of 2016, the varieties Yaroslavna, Ruslana and Krupynka were distinguished by grain size for early and medium term sowing. All varieties put on the study ensured a higher grain size in early sowing, with the exception of Yaroslavna and Ukrainka varieties. According to the results of two-year studies, it has been determined that early varieties of buckwheat Yaroslavna and Ruslana should be sown from the middle of the first decade of May. Sloboda and Krupynka grades produce the highest seed yields in the first and second lines. The exact effect of the sowing date on this indicator in the varieties SIN-3/02 and Ukrainka was not detected.

scholarly journals Influence of Sowing Time on Yield and Yield Components of Spring Rapeseed in Lithuania

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2170
Author(s):  
Lina Marija Butkevičienė ◽  
Zita Kriaučiūnienė ◽  
Rita Pupalienė ◽  
Rimantas Velička ◽  
Silvija Kosteckienė ◽  
...  
Keyword(s):  
Yield Components ◽  
Seed Weight ◽  
Sowing Date ◽  
Meteorological Conditions ◽  
Sowing Time ◽  
Similar Time ◽  
Experimental Station ◽  
Sowing Dates ◽  
Seed Yields ◽  
Number Of Seeds

Sowing time, as an element, is important to improving the adaptation of cultivars to environmental conditions and to achieving high seed yields. The field experiment was conducted from 2018–2019 at the Experimental Station of Vytautas Magnus University Agriculture Academy. The experimental design included treatments with different sowing dates: eight sowing dates in 2018 and 10 sowing dates in 2019. The first sowing of spring rapeseed was carried out when the soil reached its physical maturity, i.e., it did not stick to agricultural implements and it crumbled well. The other sowing dates were every seven subsequent days. From 2018–2019, the rapeseed emerged as best in early May (3 and 4 May), and later sowing reduced the emergence of rapeseed. In 2018, most pods were formed on one plant when the rapeseed was sown (on 1 June), compared to other sowings, on average 2.8 times more. In 2019, most pods were formed by the latest-sown rapeseed (7 June), from 1.4 to 2.7 times more compared to previously sown crops. In 2018, the sowing time of spring rapeseed did not have a significant effect on the number of seeds in one pod. In 2019, it was found that the rapeseed formed most of the seeds in the pod at a similar time as in 2018: the sowings of 19 April and 7 June. The average number of seeds in the pod was significantly reduced by early sowing (5 April). In 2019, the highest 1000-seed weight was found at the earliest-sown crop (5 April), which was on average 18.0% higher compared to the later sowings. The 1000-seed weight of the last-sown rapeseed (7 June) was the lowest. In 2018, the yields of early-sown (20 April) spring rapeseed were the highest. Later sowing significantly reduced the yields by 20.7 to 48.2%. In 2019, the highest seed yield was obtained after sowing spring rapeseed in late April (26 April); it was significant, on average, 1.9 times higher than the yields of spring rapeseed sown from 3 May to 7 June. Meteorological conditions had a stronger effect on the field emergence and yield components of spring rapeseed than the sowing date.

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