Tetraploid buckwheat as a green manure crop for organic farming

2018 ◽  
Vol 1 (94) ◽  
pp. 51-54
Author(s):  
O.V. Trygub ◽  
I.V. Zaika ◽  
P.P. Karazbey
Keyword(s):  
Green Manure ◽  
Maximum Yield ◽  
Planting Date ◽  
Row Spacing ◽  
Optimal Conditions ◽  
Green Mass ◽  
Research Experiment ◽  
Narrow Row ◽  
High Level ◽  
Sowing Period

The purpose of the research is to investigate the prospects of using the new breeding number of tetraploid buckwheat Ustymivska tetra 1/2017 (UT 1/2017) for the ability to increase the vegetative mass in comparison with the diploid variety. Methods of research. Experiment was laid in 2017. Buckwheat variety Ukrainka was used as a standard. The investigated variety and standard were sown with ordinary narrow-row and wide-row methods (15 and 45 cm, respectively), with different seeding rates of 300, 400 and 500 seeds / m2 and for three terms (12 May, 14 June and 17 July). Amount of the green mass was determined during the flowering phase for all three terms of sowing. Results. According to the data obtained under optimal conditions, the variety of buckwheat UT 1/2017 formed in 1.5-2 times a greater green mass of plants in comparison with diploids Ukrainka at a level of 4.05-7.05 kg of green mass per 1 m2, which, in terms of per 1 hectare is 85-100 tons and indicates its suitability for repeated and stubble crops if there is sufficient moisture in the soil. The greatest influence on the productivity of the variety in the experiment had the sowing period. A high level of yield at the first planting date indicates the most optimal conditions for the productivity of buckwheat vegetative mass in this period. The row spacing also affects the yield. Thus, with a wide-sowing planting (45 cm), the density of plants was optimal when sowing 500 pcs/m2, and for a narrow row - 300 pcs/m2, at which the maximum yield of green mass was formed - 6.77 and 7.05 kg/m2, respectively.

Narrow Row Spacing and Canopy Formation Reduces Weed Resurgence in Soybeans (Glycine max)

1991 ◽  
Vol 5 (1) ◽  
pp. 169-174 ◽  
Author(s):  
Fred H. Yelverton ◽  
Harold D. Coble
Keyword(s):  
Soil Surface ◽  
Planting Date ◽  
Row Spacing ◽  
Surface Irrigation ◽  
Active Radiation ◽  
Late Planting ◽  
Soybean Canopy ◽  
The Difference ◽  
Narrow Row ◽  
Radiation Measurements

In 1982 and 1983, effects of soybean row spacing and irrigation on weed resurgence following postemergence herbicide applications were evaluated. Also, ‘Forrest’ and ‘Ransom’ cultivar effects and early and late planting date influences on weed resurgence were evaluated in 1982 and 1983, respectively. In both years, as row spacing increased, weed resurgence increased. Photosynthetically active radiation measurements indicated the amount of weed resurgence coincided closely with the differing amounts of light penetrating to the soil surface. Irrigation, planting date, and cultivars showed no significant effect on weed resurgence. In 1982, a significant cultivar by row spacing interaction was obtained. In 1983, the late planting date showed a trend for less weed resurgence under irrigated conditions, although the difference was not significant. Soybean canopy measurements indicated development was greater under irrigation.

Mechanical and cultural weed control in corn and soybeans

1990 ◽  
Vol 5 (3) ◽  
pp. 114-119 ◽  
Author(s):  
Jeffrey L. Gunsolus
Keyword(s):  
Weed Control ◽  
Maximum Yield ◽  
Farm Size ◽  
Yield Potential ◽  
Row Spacing ◽  
Corn Yield ◽  
Management Skills ◽  
Narrow Row ◽  
Nonchemical Weed Control ◽  
Mechanical Weed Control

AbstractMany farmers and consumers are reevaluating chemical weed control because of the environmental risks of herbicides and their influence on farm size and diversity. This paper reviews research of the last 35 years on mechanical and cultural weed control in corn(Zea maysL.)and soybeans(Glycine maxL.).Soybeans can better use the weed control advantages of late planting and narrow row spacing and are less affected by early stand losses from mechanical weed control. In Minnesota, delaying planting to early June allows early germinating weeds to be controlled by preplant tillage but reduces the maximum yield potential of corn by approximately 25 percent and soybeans by approximately 10 percent. Narrow rows allow the crop canopy to close earlier, preventing emerging weeds from developing. However, in a nonchemical weed control system, the row spacing should allow for inter-row cultivation to control weeds that emerge with the crop. Up to a 10 percent reduction in crop stand may be expected in fields that have been rotary hoed. In Minnesota, a 10 percent stand loss results in a 2 percent loss of corn yield potential and no loss of soybean yield potential. Successful mechanical weed control is directly related to the timeliness of the operation. Rotary hoeing is effective on weeds that have germinated but not yet emerged but not on weeds that germinate from deeper than 5 cm, on no-till fields, or on fields with more than 20 to 30 percent crop residue. Inter-row cultivation is most effective on weeds up to 10 to 15 cm tall. Successful nonchemical weed control requires highly refined management skills and is as much an art as a science.

scholarly journals Seedlings planting terms and row spacings influence on fennel seed yield formation

2019 ◽  
pp. 65-73
Author(s):  
O. Knyazyuk ◽  
I. Melnyk ◽  
V. Horbatyuk ◽  
Kh. Lytvin
Keyword(s):  
Growth And Development ◽  
Linear Growth ◽  
Maximum Yield ◽  
Row Spacing ◽  
Planting Time ◽  
Early Planting ◽  
Green Mass ◽  
Row Width ◽  
Open Ground ◽  
Fruit Formation

Fennel is a perennial plant though the crop is used as biennial. Growing fennel seedlings and planting it in open ground at the phase of 4–5 leaves reduces the growing season and increases crop productivity of the plant. The beginning of growth phases and development of fennel plants depends on the seedlings planting time. The accelerated process of the crop budding phase is noted at its early planting on April 20. The large-scale flowering of fennel was noted only 19 days after planting and fruit formation – after 27 days for seedlings planting on May 10. It was found that linear growth of seedlings at the early stage of planting (April 20) was the largest at row spacing of 15 cm and was 38,6 cm at the flowering period of fennel, that is 12,2 cm larger than in the 45 cm row spacing. The linear growth of crops in the main phases of fennel vegetation was lower for planting seedlings on May 10 compared to April 20. A faster acceleration of the growth and development phases as well as linear growth of fennel was noted for early planting of seedlings – on April 20. After planting fennels seedlings in the open ground, it was found that plants grow slowly (2–3 cm per decade) until the budding stage, and from the budding to fruit formation stage the growth rate of plants increased by 11.0–17.8 cm. Phenological observation of fennel plants leaf apparatus formation was carried out immediately after the shoots appearance. It was established that the first pair of true leaves formed in 10 days after sowing of seeds in the greenhouse, and the fifth pair of leaves – in 50–55 days. The leaves weight grew most during the budding stage – the fruit production of fennel plants depended on the seedlings planting time. The maximum value was noted for planting on May 10 and for 45 cm row spacing and made 10.86 g. The main indicator of fennel performance is its fruits and seeds weight. Plant mass and its individual parts grew and the ratio of green mass parts changed during the growth and development of the crop. Thus, the leaves weight on the experimental sites was 2.1–3.1 g or 37.5–38.3 % at the budding phase. Leaves weight was 4.7–7.8 cm2/m2 or 38.0–51.7 % during the fennel fruit formation. At the budding phase the leaves weight increased by 8.1 % for planting the seedlings with an intermediate row of 15 cm (compared to 45 cm row spacing) respectively, and the leaves weight was 13,7 % higher by the fruit formation time. The plants density in the area (intermediate row 15 cm) contributed to increase in individual fennel productivity (green mass of plants). The maximum yield of fennel seeds in the experimental sites was noted for the row spacing of 45 cm – 5.9 kg/10 m2. Thus, the most favorable conditions for fennel growth and development are under seedling planting on April 20, as the maximum yield is noted here. The denser placement of plants in the area (15 cm spacing) contributes to individual productivity increase (green plant weight, including leaves and stalks). Increasing the row width (up to 45 cm) contributed to the maximum yield of fennel seeds up to 5,9 kg/10 m2. Key words: fennel, seedlings planting terms, row width, productivity, leaf apparatus.

scholarly journals Cultivar, Planting Date, and Row Spacing Effects on Mungbean Performance in Virginia

HortScience ◽  
2015 ◽  
Vol 50 (9) ◽  
pp. 1309-1311 ◽  
Author(s):  
Harbans L. Bhardwaj ◽  
Anwar A. Hamama
Keyword(s):  
United States ◽  
Winter Wheat ◽  
Seed Yield ◽  
The United States ◽  
Planting Date ◽  
Row Spacing ◽  
Atlantic Region ◽  
Planting Dates ◽  
Spacing Effects ◽  
Narrow Row

Mungbean [Vigna radiata (L.) R. Wilczek, Fabaceae] is one of the most important food legume crops in Asia. It is also gaining importance in other parts of the world such as Australia and Canada. The United States imported mungbean worth ≈22 million dollars during 2014. To establish domestic production and to determine if mungbean can be produced in rotation with winter wheat (Triticum aestivum L.), replicated experiments were conducted during 2012 and 2013 using two cultivars (Berken and TexSprout), two planting dates (early and late July), and two row spacings (37.5 and 75 cm). Cultivar and planting date effects on seed yield were not significant, however, narrow row spacing resulted in significant higher seed yield and concentration of protein over the wider row spacing (1.76 vs. 0.86 Mg⋅ha−1 yield and 24.9% vs. 23.7% protein). Early planting resulted in lower sugar and oil concentrations over late planting (4.4% vs. 5.5% sugar and 1.24% vs. 1.99% oil). Average mungbean values for seed yield, seed size, and concentrations of protein, sugars, and oil were 1.31 Mg⋅ha−1, 7.08 g/seed100, 24.3%, 4.91%, and 1.59%, respectively. Low harvest index values (17% to 25%) indicated that potential exists for improvement in mungbean seed yield. The results indicated that mungbean can be easily produced in rotation with winter wheat in the mid-Atlantic region of the United States.

INFLUENCE OF METHODS FOR SELECTION OF PLANTS AND WAYS OF SEEDING ON EFFICIENCY OF ORIGINAL SEEDS OF FLAX-DOLGUNETS GRROWING IN PRIMARY SEED BREEDING

2020 ◽  
Keyword(s):  
Seed Yield ◽  
Control Level ◽  
Row Spacing ◽  
High Germination ◽  
Breeding Efficiency ◽  
Flax Seeds ◽  
Narrow Row ◽  
Seed Propagation ◽  
Selection Of

The results of scientific research are presented, which made it possible to develop less labor-intensive methods for selecting flax plants to grow original (updated) seeds. Studies have shown that a positive selection of tall plants of flax, compared with the accepted counterpart (control), increased seed yield 1.7-1.9 times. Moreover, plant homogeneity according to the main characteristics (height and fiber content in the stem) characterizing the varietal quality of grown seeds turned out to be at the control level. A negative selection, involving the removal of atypical plants, provided an increase in the output volume of seeds compared to the control by 3.9-4.1 times. This selection method did not reduce the varietal quality of seed material compared to the accepted analogue. With both selection methods, after combining typical plants, seeds with the same high germination rates were obtained (96-99 %). The breeding efficiency of the grown flax seeds using narrow-row sowing methods is shown. Studies have established that narrow-row sowing of seeds with a row-spacing of 7.5 and 6.25 cm compared with sowing by a wide-row method significantly increased their yield by 2.8-3.0 and 2.3-3.0 kg / ha, respectively. The greatest influence on the formation of seed yield in narrow-row sowing (6.25 cm) was exerted by the method of sowing, the part of which was 76.1 %. As the length of seed propagation of flax in creased (up to the uterine elite 2 years) in narrow-row sowing (6.25 cm) compared to broad-row, there was no decrease in quality indicators - germination and seed strength.

scholarly journals Individual and Combined Effects of Planting Date, Seeding Rate, Relative Maturity, and Row Spacing on Soybean Yield

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 605
Author(s):  
Peder K. Schmitz ◽  
Hans J. Kandel
Keyword(s):  
Seed Yield ◽  
Management Practices ◽  
Synergistic Effects ◽  
Canopy Cover ◽  
Planting Date ◽  
Row Spacing ◽  
Growth Stages ◽  
Seeding Rate ◽  
Yield Increase ◽  
Beginning Of Flowering

Planting date (PD), seeding rate (SR), relative maturity (RM) of cultivars, and row spacing (RS) are primary management factors affecting soybean (Glycine max (L.) Merr.) yield. The individual and synergistic effects of PD, SR, RM, and RS on seed yield and agronomic characteristics in North Dakota were herein investigated. Early and late PD, early and late RM cultivars, two SR (408,000 and 457,000 seed ha−1), and two RS (30.5 and 61 cm) were evaluated in four total environments in 2019 and 2020. Maximizing green canopy cover prior to the beginning of flowering improved seed yield. Individual factors of early PD and narrow RS resulted in yield increase of 311 and 266 kg ha−1, respectively. The combined factors of early PD, late RM, high SR, and narrow RS improved yield by 26% and provided a $350 ha−1 partial profit over conventional practices. Canopy cover and yield had relatively weak relationships with r2 of 0.36, 0.23, 0.14, and 0.21 at the two trifoliolate, four trifoliolate, beginning of flowering, and beginning of pod formation soybean growth stages, respectively. Producers in the most northern soybean region of the USA should combine early planting, optimum RM cultivars, 457,000 seed ha−1 SR, and 31 cm RS to improve yield and profit compared to current management practices.

Production of Cotton on Narrow Row Spacing

1992 ◽  
Vol 35 (4) ◽  
pp. 1109-1112 ◽  
Author(s):  
J. R. Williford
Keyword(s):  
Row Spacing ◽  
Narrow Row

scholarly journals Impact of Row Spacing and Planting Date on the Canopy Environment, Abundance of Lesser Cornstalk Borer and Other Arthropods, and Incidence of Aflatoxigenic Fungi in Peanuts

1997 ◽  
Vol 24 (1) ◽  
pp. 52-59
Author(s):  
S. D. Stewart ◽  
K. L. Boweri ◽  
T. P. Mack ◽  
J. H. Edwards
Keyword(s):  
Climatic Conditions ◽  
Planting Date ◽  
Row Spacing ◽  
Planting Dates ◽  
Canopy Development ◽  
Late Planting ◽  
Elasmopalpus Lignosellus ◽  
Soil Temperatures ◽  
Lepidoptera Pyralidae ◽  
Wide Row Spacing

Abstract Three row spacings and two planting dates for peanuts, Arachis hypogaea L., were examined in 1993 and 1994 to determine the influence of the canopy environment on lesser cornstalk borer, Elasmopalpus lignosellus (Zeller) (Lepidoptera: Pyralidae), other arthropods, and alflatoxigenic fungi. Climatically, 1993 and 1994 were disparate years. Decreasing row spacing increased relative leaf area and light interception by the canopy but, compared to difference between planting dates or years, had a relatively small impact on soil temperatures and relative humidity within the canopy. Late planting produced smaller plants, retarded canopy development, and reduced yield in both years, but especially in 1993 when it was hot and dry. The wide row spacing did not yield as well as twin and normal row spacings in either year. Lesser cornstalk borer damage and aflatoxin concentration were higher in the late planting than in the early planting of 1993, but were unaffected by row spacing. Fewer predatory arthropods were caught as row spacing decreased in both beat and pitfall samples, but planting date had variable effects. Prevailing climatic conditions and planting date appeared to be more important in influencing the canopy environment and pest densities than was row spacing.

A PROSPECTS OF THE SUPER-INTENSIVE UNSUPPORTED GARDENS ESTABLISHMENT OF COLUMNAR APPLE TREE VARIETIES

1970 ◽  
pp. 45-48
Author(s):  
S. А. Korneeva ◽  
Е. N. Sedov ◽  
T. V. Янчук
Keyword(s):  
Economic Efficiency ◽  
Apple Tree ◽  
Maximum Yield ◽  
Biological Features ◽  
Apple Cultivars ◽  
High Level ◽  
Dwarf Rootstocks

Columnar apple cultivars are optimally suited to lay apple tree plantings using intensive technology, which provides for super-dense placement of trees. The article considers a variant of growing columnar apple cultivars on inserts of dwarf rootstocks 3-17-38 and 62-396. The use of dwarf rootstocks 3-17-38 and 62-396 as intercalar inserts in the cultivation of columnar apple cultivars, along with good anchoring of plants, provides high precocity, productivity and economic efficiency of planting. All the costs of laying the orchard and annual works on agrotechnical care of the trees were paid off in the fourth year after planting.The economic and biological features of the columnar cultivars provided not only a quick return of the investments, but also a high level of profitability. The profitability of the studied columnar planting for the 6th year after planting (2020) on average for all cultivars was 106.0 % on the insert of the dwarf rootstock 62-396 and 104.7 % on the insert 3-17-38. The profit received on average for the plantings amounted to 2 378 661 rubles per ha. In the group of the studied cultivars, there is a difference in economic efficiency. The lowest level of productivity and profitability was in the Vostorg cultivar: on average, on two inserts, the yield in 2020 was 27.3 t/ha and the profitability was 66.6%. The Girlyanda cultivar was characterized by the maximum yield and profitability: 88.0 t/ha and 115.8%, respectively.

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