scholarly journals Формування продуктивності сорго цукрового під впливом строків сівби

2017 ◽  
Vol 7 (4) ◽  
pp. 500-505 ◽  
Author(s):  
M. B. Grabovskiy ◽  
T. O. Grabovskaya ◽  
L. A. Kozak ◽  
O. S. Gorodetskyi ◽  
L. V. Bohatyr
Keyword(s):  
Soil Temperature ◽  
Leaf Area ◽  
Dry Matter ◽  
Flag Leaf ◽  
Dry Mass ◽  
Climatic Conditions ◽  
Green Mass ◽  
Photosynthetic Potential ◽  
Dough Stage ◽  
Ground Mass

The scientifically based choice of sowing terms for sorghum depends on the climatic conditions, type, state and humidity of the soil, biological characteristics of varieties and hybrids, the economic purpose of sowing, rate of positive temperatures growth. The purpose of the research was to determine the effect of sowing terms on the growth, development and the yield of green mass of sugar sorghum. In the experiment, the variety of sugar sorghum Silosne 42 and the hybrid Dovista were sown in three terms when the soil temperatures at the depth of seeding were: І – 6–8 °С, ІІ – 8–10 °С, ІІІ – 10–12 °С. Biometric indexes of sugar sorghum depended both on sowing terms and varietal characteristics. The plants most intensively developed and formed the above-ground mass in a variant where the soil temperature at the depth of seeding was 10–12 °С, and plants height was 151.7 and 193.7 cm in the period of flowering – respectively in the Silosne 42 variety and the Dovista hybrid. The highest indexes of the leaf area (51.87 and 57.25 thousand m2/ha), photosynthetic potential (4.26 and 4.32 million m2×days/ha) and the net productivity of photosynthesis (3.50 and 3.54 g/m2 per day) of sugar sorghum were on varieties, sown when the soil temperature at the depth of seeding was 10–12 °С, respectively in the Silosne 42 variety and the Dovista hybrid. It was noted that the increase in the surface of leaf area and the duration of vegetation result in higher photosynthetic potential and, consequently, the growth of the green mass yield. Maximum indexes of pure productivity of photosynthesis are observed in the flowering period, that is, during the period of the most intense growth of the above-ground mass and the leaf surface of sugar sorghum. From the flag leaf stage until flowering stage there is an intense growth in sugar sorghum, and increment of green mass is 57.3-78.6% compared with the growing point differentiation stage. The sorghum biomass indexes had the highest values at all stages of the third sowing term. Increment of the green mass continues to the hard dough stage, while dry matter grows throughout the growing period. The highest yield of the green and dry mass of the Silosne 42 variety and the Dovista hybrid is observed in the hard dough stage, when the soil temperature at the depth of seeding was 10–12 °С – 74.8 and 17.4 t/ha and 83.7 and 20.2 t/ha. The Dovista hybrid prevailed on the yield of the green mass on 9.8–12.7% and dry matter on 4.5–7.8% than the Siloshne 42 variety.

scholarly journals Nitrogen and potassium supply and the morphogenic and productive characteristics of marandu palisadegrass

2010 ◽  
Vol 39 (8) ◽  
pp. 1666-1675 ◽  
Author(s):  
Marcio Mahmoud Megda ◽  
Francisco Antonio Monteiro
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
System Development ◽  
Block Design ◽  
Dry Mass ◽  
Dry Matter Production ◽  
Root System Development ◽  
Randomized Block Design ◽  
Matter Production ◽  
Specific Length

The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part dry mass positively correlated with the number of tillers and leaves and grass leaf area. Nitrogen rates modulated the root system development, and the root specific length and surface decreased when high rates of nitrogen and potassium were supllied. Nitrogen and potassium influence Marandu palisadegrass morphogenic characteristics, which are determinant for grass dry matter production.

scholarly journals PRODUCTIVITY OF NEW MAIZE HYBRIDS IN CONDITIONS OF THE URALS

2020 ◽  
Vol 17 (35) ◽  
pp. 1175-1185
Author(s):  
Raphael ISMAGILOV ◽  
Еlena SOTCHENKO ◽  
Bulat AKHIYAROV ◽  
Damir ISLAMGULOV ◽  
Razit NURLYGAJANOV
Keyword(s):  
Nutritional Value ◽  
Climatic Conditions ◽  
Farm Animals ◽  
Primary Concern ◽  
Climate Conditions ◽  
Maize Hybrids ◽  
Seed Technology ◽  
Green Mass ◽  
Maize Seeds ◽  
Ground Mass

The research aimed to identify the most productive hybrids selected by the All-Russian Research Institute of Maize to cultivate by the cereal seed technology in the natural conditions of the Middle Cis- Urals. Methodology. Maize was cultivated for seeds and green fodder for farm animals in the conditions of the Middle Cis-Urals. The maize green mass, consisting mainly of stems and leaves, usually contains up to 88-90% water. Silage being prepared for it has less dry matter and protein. Such fodder has low nutritional value and poor return from livestock products. The most high quality and nutritious feed can be received from maize seeds or its above-ground mass with seeds of milky-wax and wax ripeness. To select early-maturing hybrids with high nutritional value is the primary concern for the studied area. Results. The results demonstrate that the productivity of maize hybrids ranges from 2.50 to 6.76 t/ha depending on soil and climatic conditions. When maize hybrids are grown by seed technology, the above-ground mass of the studied crops is 30.68-68.80 t/ha. Conclusions. It is necessary to select earlier ripening and highly productive hybrids to increase the quality and nutrition of corn feed. The recommended hybrids for grain production are Ural 150 (5,45 t/ha), Baikal (5,38 t/ha) and Mashuk 170 MV (4,98 t/ha); K-170 (56,7 t/ha), Shihan (55,67 t/ha) and Mashuk 170 MV (54,99 t/ha) that provided a higher output of the green mass at milky-wax ripeness of grain are best for silage production. The resulting data make it possible to select maize hybrids with high yields and nutritional value for farms with similar soil and climate conditions and to develop diets for highly productive dairy and beef cattle.

scholarly journals Growth analysis of chickpea (Cicer arietinum L.)

1994 ◽  
Vol 51 (3) ◽  
pp. 430-435 ◽  
Author(s):  
S.S.S. Nogueira ◽  
V. Nagai ◽  
N.R. Braga ◽  
M. Do C.S.S. Novo ◽  
M.B.P. Camargo
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Dry Matter ◽  
Growth Analysis ◽  
Climatic Conditions ◽  
Area Index ◽  
Experimental Station ◽  
Matter Production ◽  
Winter Crop ◽  
Quadratic Models

An experiment to study the growing pattern of a chickpea variety, IAC-Marrocos, was carried out at the Monte Alegre Experimental Station, SP, during 1987 and 1988. The dry matter production of all parts of the plant, as well the leaf area index, were weekly evaluated. Exponential quadratic models of regression were adjusted to total dry matter, leaf dry matter and leaf area index, and a linear model to dry matter of grain. Based on the growth analysis it was concluded that the chickpea is a rustic eatable plant that can be recommended as an alternative winter crop for similar climatic conditions as those of the experiment.

The Field Performance of Induced Uniculm Grain Sorghum (Sorghum bicolor) in South-east Queensland, Australia

1986 ◽  
Vol 22 (4) ◽  
pp. 393-403 ◽  
Author(s):  
S. Fukai ◽  
C. J. Liwa ◽  
C. W. L. Henderson ◽  
B. B. Maharjan ◽  
R. C. Hermus ◽  
...  
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Root Development ◽  
Dry Matter ◽  
Flag Leaf ◽  
Field Performance ◽  
Grain Sorghum ◽  
Wet Season ◽  
Stages Of Growth ◽  
Dry Conditions

SUMMARYReduction of leaf area in sorghum without tillers (uniculm sorghum) might result in conservation of water at early stages of growth and hence in stability of grain yield under dry conditions. In two experiments in south-east Queensland, Australia, tillers were removed by hand to examine the growth of uniculm sorghum. Tiller removal promoted root development at the flag leaf stage but significantly reduced shoot dry matter and lowered grain yield by about 20% in a wet season. The saving in soil water as a result of tiller removal was relatively small but statistically significant.

scholarly journals The study of the productivity dynamics and quality of forage made from different varieties of alfalfa and sainfoin

2018 ◽  
pp. 10-14 ◽  
Author(s):  
S. A. Ignatiev ◽  
T. V. Gryazeva ◽  
N. G. Ignatieva ◽  
A. A. Regidin
Keyword(s):  
Dry Matter ◽  
Agricultural Research ◽  
Biological Properties ◽  
Climatic Conditions ◽  
Standard Variety ◽  
Plant Resources ◽  
Green Mass ◽  
Digestible Protein ◽  
Alfalfa Varieties ◽  
Productivity Potential

Alfalfa and sainfoin have always been the main perennial fodder legumes in the south of Russia. Because of their economic and biological properties, crop and fodder production have always relied on their cultivation and will rely on it in the future. Insufficient cultivated areas of these legumes make it impossible to provide livestock with balanced feed, to use climatic, soil and plant resources rationally. The study of the varietal composition of alfalfa and sainfoin developed in the FSBSI “Agricultural Research Center “Donskoy” showed that the productivity potential of these varieties makes it possible to obtain a fairly high yields of forage under various weather-climatic conditions. For 6 years the average yield of green mass of the standard variety “Rostovskaya 90” was 27.0 t/ha in the first cutting and 18.1 t/ha in the second cutting, and in the total for two cuttings it is 45.1 t/ha. In the first cutting for 5 years out of 6, the green mass pro­ductivity of the alfalfa varieties “Lyutsiya” and “Selyanka” significantly exceeded the standard variety. On average for two cuttings, green mass productivity of the varieties “Lyutsiya” (47.8 t/ha) and “Selyanka” (48.9 t/ha) was higher than that of the standard variety. The yield of absolutely dry matter of the standard variety “Rostovskaya 90” varied from 6.7 t/ha to 7.7 t/ha in the first cutting and from 4.3 t/ha to 5.2 t/ha in the second cutting. The yield of absolutely dry matter of the alfalfa varieties “Lyutsiya” and “Selyanka” reliably exceeded the standard variety in the first cutting, but in the second cutting their yield was equal to the yield of the standard variety. According to the green mass yield of one cutting, the studied varieties of sainfoin were as good as the alfalfa productivity in the first cutting. The green mass pro­ductivity of the standard variety “Zernogradsky 2” ranged from 24.4 to 31.1 t/ha, the green mass productivity of the sainfoin variety “Veles” ranged from 26.8 t/ha to 39.4 t/ha, and the green mass productivity of the variety “Sudar” ranged from 28.8 t/ha to 33.3 t/ha. The dry matter productivity of the sainfoin varieties developed in a similar way. The minimum dry matter productivity of the standard variety “Zernogradsky 2” was 6.1 t/ha, the maximum was 7.8 t/ha. The minimum dry matter productivity of the variety “Veles” was 6.7 t/ha and the maximum was 9.8 t/ha. The minimum dry matter productivity of the variety “Sudar” was 7.2 t/ha and the maximum was 8.8 t/ha. In total for 2 cuttings, the alfalfa varieties produced 7.45–8.12 thousand of fodder units, 2.29–2.57 t/ha of raw protein and 1.59–1.78 t/ha of digestible protein. The varieties “Lyutsiya” and “Selyanka” showed a higher yield of nutrients, compared with the standard variety. The nutrient productivity of the studied sainfoin varieties slightly yielded to the alfalfa varieties in the first cutting. On average they produced 3.89–4.55 thousand of fodder units per hectare, 1.34–1.55 t/ha of raw protein and 0.93–1.11 t/ha of digestible protein. In comparison with the standard variety “Zernogradsky 2”, the sainfoin varieties “Veles” and “Sudar” had a greater productivity of nutrients.

scholarly journals Biological products of the associative group in adaptive technology of cultivation of Scarlet amaranth and Poterium polygama in the conditions of forest steppe of the middle Volga region

2020 ◽  
pp. 20-24
Author(s):  
Anna Nikolaevna Kshnikatkina ◽  
Elena Aleksandrovna Zueva ◽  
Inna Aleksandrovna Voronova ◽  
Anna Anatolyevna Belyaeva
Keyword(s):  
Leaf Area ◽  
Seed Yield ◽  
Dry Matter ◽  
Exchange Energy ◽  
First Year ◽  
Biological Products ◽  
The Third ◽  
Green Mass ◽  
Digestible Protein ◽  
Second Year

In the course of studies, it was found that taking inoculation of Scarlet amaranth and Poterium polygama seeds with biologics has a positive effect on the formation of photosynthesis parameters. In amaranth agrocenoses during the panicle sweeping phase, the leaf surface area was significantly higher when seeds were inoculated with biological products than in the control variant for Kizlyarets cultivar by 23.1-36.3% and Valentina cultivar by 23.8-38.0%, the most effective the method was exogenous seed treatment with agric. The maximum parameters of photosynthesis were noted during seed maturation. So, on average for three years of research, the leaf area of the Kizlyarets variety was 64.1 and the Valentine variety 62.3 thousand m2 / ha, the photosynthetic potential, respectively, was 2.05 and 1.98 million m2 days / ha, the net productivity of photosynthesis - 8.56 and 7.66 g / m2 per day. The most intensive increase in the leaf area in the crops of the blackhead was noted in the budding phase, according to the experimental variants, it amounted to 40.8-45.3 thousand m2 / ha in the first year of use, and 41.9-46.8 thousand m2 in the second year of use / ha, in the third year of use - 42.8-47.4 thousand m2 / ha On average, over three years the largest collection of dry matter (6.9 t / ha), feed units (9.1 t / ha), digestible protein (1.45 t / ha) and metabolic energy (81.6 GJ) were obtained from Kizlyarets varieties when inoculating seeds with Agrika biological product. At the same time, the highest seed yield was obtained (1.31 t / ha), which is 2.39 times higher than the control variant and 1.44 times higher than the Valentina variety. Optimization of the plant’s mineral nutrition by seed inoculation with associative bacterial preparations provided for an increase in the productivity of the polygamous monofil. The yield of green mass of the Poterium polygama of the first year of use for an average of three years according to the experimental options was 28.5–31.8 t / ha, collection of dry matter – 7.3–8.2 t / ha, feed units – 4.36–4.87 t / ha, digestible protein - 0.56–0.65 t / ha, exchange energy - 88.7–99.6 GJ. The highest productivity of the blackhead was when treating seeds with Agrika with microelements together with Azotobacter: green mass - 31.8 t / ha, dry matter collection - 8.2 t / ha, feed units - 4.87 t / ha, digestible protein – 0.65 t / ha, exchange energy - 99.6 GJ, which significantly exceeds the performance of the control option. The treatment of seeds with biologics provided an increase in the seed productivity of the polygonidae by 91.7–223.1 kg / ha (10.1–24.6%). The highest seed yield in the first year of use is 1130.1 kg / ha, the second year of use is 1258.9 kg / ha, the third year of use is 1268.3 kg / ha, which significantly exceeds the control indicators by 27.3% and 27.8% was obtained during bacterization of seeds with Agrika, enriched with microelements and together with Azotobacter.

scholarly journals The achievements in the sorghum varieties and hybrids' breeding in the ARC “Donskoy”

2020 ◽  
pp. 44-48
Author(s):  
A. V. Alabushev
Keyword(s):  
Dry Matter ◽  
Agricultural Research ◽  
Federal District ◽  
Climatic Conditions ◽  
Research Center ◽  
Cereal Aphids ◽  
Initial Growth ◽  
Lodging Resistance ◽  
Green Mass ◽  
Green Fodder

Sorghum is one of the most important crops in all arid tropical and subtropical regions of Africa, Asia, and Central America. In the Russian Federation, the sowing area of sorghum varied from 8.7 to 228.6 thousand ha throughout about 20 years (1999–2018). The main share (93–98%) of the sowing area of sorghum in Russia is located in the Pre-Volga region and the Southern Federal District. The Rostov Region as a part of the Southern Federal District accounts for up to 46–69% of sorghum crops (Kovtunov, 2018). The most effective way to increase productivity and product quality is to create new varieties adapted to the soil and climatic conditions of cultivation and introduce them into agricultural production. The FSBSI “Agricultural Research Center “Donskoy” developed the white-kernelled sorghum varieties “Velikan”, “Zernogradskoye 88” and “Ataman” with 5.41–5.85 t/ha of productivity not only for fodder, but also for food (starch, alcohol). The sweet sorghum varieties “Listvenit”, “Yuzhnoye” and “Feniks” with green mass productivity of 38–46 t/ha are intended for use on green fodder and silage and are characterized by intensive initial growth, lodging resistance, drought resistance, resistance to dust smut, bacteriosis and to cereal aphids. The Sudan grass varieties “Anastasiya”, “Alisa” and “Gratsiaya” developed in the Agricultural Research Center “Donskoy” are characterized by the intensive initial growth and regrowth. They are middle-ripening, drought tolerant, highly productive with 41–44 t/ha of green mass and 8.3–8.6 t/ha of dry matter. There have been developed and are being tested the promising sorghum-Sudan hybrids with 62–77 t/ha of green mass and 11.4–16.6 t/ha of dry matter obtained in mowing the aftermath.

scholarly journals Growth analysis in chard plants (Beta vulgaris L. Cicla, cv. 'Pencas Blancas') exposed to different light quality

2014 ◽  
Vol 32 (2) ◽  
pp. 205-212 ◽  
Author(s):  
Fánor Casierra-Posada ◽  
Esteban Zapata-Casierra ◽  
Daniel A. Chaparro-Chaparro
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Matter ◽  
Light Quality ◽  
Dry Weight ◽  
Dry Mass ◽  
Dry Matter Partitioning ◽  
Absolute Growth ◽  
Net Assimilation ◽  
Total Dry Weight

To determine the effects of light quality on the growth indices of plants, Pencas Blancas cultivar chard plantlets were grown for 2 months under five different light treatments, obtained by filtering sunlight through colored polyethylene films. The treatments included: red, blue, green, yellow and transparent cover colors. A transparent cover (white light) was used as the control. The colored covers affected the plant growth. The plants grown under the yellow cover presented a better behavior with regards to growth, taken as: total dry weight per plant, leaf area, specific leaf area, absolute growth rate, relative growth rate, harvestable dry matter and root to shoot ratio. The dry matter partitioning in the leaves and roots was affected by the light quality, but not in the petioles, with a higher accumulation of dry mass in the leaves of plants grown under the yellow cover. As a consequence of the enhanced leaf area in the plants under the yellow cover, they also had the highest water uptake. On the other hand, the highest net assimilation rate value was found in plants grown under the transparent cover. These results open up the possibility of using yellow colored cover in leafy green vegetables, especially in chard plants grown under controlled conditions.

The growth of swards of subterranean clover with particular reference to leaf area

1958 ◽  
Vol 9 (1) ◽  
pp. 53 ◽  
Author(s):  
JL Davidson ◽  
CM Donald
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Substantial Reduction ◽  
Ground Surface ◽  
Subterranean Clover ◽  
Climatic Conditions ◽  
Dry Matter Production ◽  
Leaf Production ◽  
Area Index ◽  
Matter Production

An experiment was conducted to study the growth of subterranean clover (Trifolium subterraneum L.) sown at different densities; the control swards were not defoliated while others were subjected to a single defoliation at various dates. During the final month the rate of dry matter production (tops only) increased to a maximum when the leaf area index (the ratio of the area of the leaves to the area of the ground surface — L.A.I.) was about 4-5, falling by about 30 per cent. as the L.A.I. increased to 8.7. The rate of leaf production was greatest at about L.A.I. 4-5, falling to zero at L.A.I. 8.7. Climatic conditions during the growing season influenced the relationship of L.A.I. to growth; as conditions became more favorable the values of the optimum LA.1. for growth and of the ceiling L.,4.1. progressively rose. Irrespective of the density, all swards tended towards a common ceiling L.A.I. and yield by the end of the season. The effect of defoliation depended on the L.A.I. at which defoliation occurred, on the value to which the L.A.I. was reduced, and on current climatic conditions. If swards near the ceiling L.A.I. were defoliated, total dry matter production was slightly increased and there was a great increase in leaf production. On the other hand, defoliation of swards from about the optimum L.A.I. to very low L.A.I. values led to a substantial reduction in both dry matter and leaf production. It is suggested that all these effects depend on the light relationships within the sward and their influence on the balance of photosynthesis and respiration. Pasture at the optimum L.A.I. will give greater production than swards of lower or higher L.A.I.; defoliation can give greatly increased leaf production, unless L.A.I. is reduced to very low values.

The growth and water use of three species of conifer seedlings planted on a high-elevation south-facing clearcut

1988 ◽  
Vol 18 (10) ◽  
pp. 1234-1242 ◽  
Author(s):  
N. J. Livingston ◽  
T. A. Black
Keyword(s):  
Stomatal Conductance ◽  
Leaf Area ◽  
Dry Matter ◽  
Growing Season ◽  
Dry Mass ◽  
High Elevation ◽  
Western Hemlock ◽  
Silver Fir ◽  
Matter Production ◽  
Seedling Leaf

Container-grown 1-0 seedlings of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco), western hemlock (Tsugaheterophylla (Raf.) Sarg.), and Pacific silver fir (Abiesamabilis (Dougl.) Forbes) were spring planted on a south-facing high-elevation clearcut located on Mount Arrowsmith, Vancouver Island, British Columbia, and their growth and development was measured over three successive growing seasons. Treatments designed to modify seedling microclimate, including provision of shade cards, irrigation, and irrigation and shade cards combined, had a marked effect on the extent and type of growth in all species. Irrigated seedlings had the largest shoot dry masses and the highest shoot to root dry mass ratios. Shaded seedlings had larger shoots than untreated seedlings, which had the lowest shoot to root dry mass ratios. All seedlings showed a pronounced decline in seasonal growth 1 year after planting. Douglas-fir seedlings exhibited a high degree of drought tolerance; in the driest year there was only a 20% difference in total dry matter production between irrigated and nonirrigated seedlings. Western hemlock and Pacific silver fir seedlings, despite not being drought tolerant, expended water to achieve growth and thereby exposed themselves to desiccation. Measurements of growing-season seedling dry matter production were better related to estimates of growing-season transpiration, obtained by summing the products of seedling leaf area, hourly D/(RvT′), where D is vapour pressure deficit, Rv is the gas constant for water vapour, and T′ is the absolute air temperature, and stomatal conductance derived from a boundary-line analysis model, than to estimates of growing-season average total seedling canopy conductance, i.e., the average of the products of seedling leaf area and stomatal conductance.

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