Effect of row spacing and maturity at harvest on the fermentative profile, aerobic stability, and nutritional characteristics of biomass sorghum (BRS 716) silage in the semiarid region of Brazil

The objective was to evaluate the structural, yield and nutritional characteristics of biomass sorghum BRS 716 managed in different row planting spacing and harvest age in a semiarid region of Brazil. Three row spacing (45, 70 and 90 cm; plots) and four maturity at harvest (70, 100, 130 and 160 days; subplots) were evaluated following a randomized block design in a 3 x 4 split plot arrangement, with eight blocks. The useful area was 3 x 15 m. Variation in soil fertility in the area was the blocking factor. There was interaction between row spacing and maturity at harvest (P < 0.05) on plant height (P = 0.01), dry matter yield (DMY; P < 0.01) and proportion of senescent material (P = 0.01). The DMY observed at the age of 160 days and spacing of 90 cm was 41.40% higher than the DMY at the same age and in spacings of 45 and 70 cm (mean of 21.45 t/ha). As the maturity at harvest increased, there was a reduction in the crude protein content (P < 0.01), potential degradability (P < 0.01) and effective degradability (P < 0.01) of dry matter, and the content of non-fiber carbohydrates (P < 0.01), total digestible nutrients (P < 0.01) and the readily soluble fraction (P < 0.01) of the dry matter increased. Considering the yield and nutritional characteristics of biomass sorghum BRS 716 managed in the semiarid region for silage production, the row spacing of 90 cm and the maturity at harvest of 160 days after planting are recommended.

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Performance of common buckwheat (Fagopyrum esculentum M.) in response to row spacing under ridge and furrow cropping systems in a semiarid region of China

Archives of Agronomy and Soil Science ◽

10.1080/03650340.2018.1461211 ◽

2018 ◽

Vol 64 (13) ◽

pp. 1807-1817

Author(s):

Ying Jiang ◽

Xinxin Wang ◽

Zhaohai Zeng ◽

Jinjing Han ◽

Michela Schiavon ◽

...

Keyword(s):

Cropping Systems ◽

Fagopyrum Esculentum ◽

Semiarid Region ◽

Row Spacing ◽

Common Buckwheat

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INFLUENCE OF ROW SPACING ON YIELD AND CREEPING ROOT DEVELOPMENT OF RAMBLER ALFALFA IN A SEMIARID REGION

Canadian Journal of Plant Science ◽

10.4141/cjps69-052 ◽

1969 ◽

Vol 49 (3) ◽

pp. 307-311 ◽

Cited By ~ 2

Author(s):

M. R. Kilcher ◽

D. H. Heinrichs

Keyword(s):

Root Development ◽

Semiarid Region ◽

Row Spacing ◽

Canadian Prairie ◽

The Third ◽

Loam Soil

The creeping-rooted alfalfa (Medicago media Pers.) cultivar Rambler was grown in stands for 5–6 years and in rows varying from 30 to 120 cm apart on loam soil at Swift Current, Saskatchewan. This is a semiarid location in the Canadian prairie region.On the average, highest yields were obtained from stands of alfalfa growing in rows spaced 45 to 60 cm apart. Lowest yields were those from alfalfa growing in rows spaced 30 cm apart.New plants originating from creeping roots did not appear between the seeded rows until the third growing year. The number of creeping plants varied between row spacings, increasing numbers occurring with increasing row spacings. After six years, creeping plants made up only 2 to 3% of total stand in the 30-cm spaced rows, but constituted about 20% of stand where row spacings were 90 cm or greater.The significance of row spacings, origin of new plants, and the longevity and productivity of the stands are discussed.

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Plant population and row spacing on biomass sorghum yield performance

Ciência Rural ◽

10.1590/0103-8478cr20141133 ◽

2015 ◽

Vol 46 (3) ◽

pp. 434-439 ◽

Cited By ~ 6

Author(s):

Andre May ◽

Vander Fillipe de Souza ◽

Geraldo de Amaral Gravina ◽

Pedro Gonçalves Fernandes

Keyword(s):

Cultural Practices ◽

Calorific Value ◽

Weather Conditions ◽

Plant Population ◽

High Yield ◽

Row Spacing ◽

Total Biomass ◽

Yield Performance ◽

Biomass Sorghum ◽

Seed Propagation

ABSTRACT: Biomass sorghum is one of the most promising crops for the production of electricity through the burning in high-pressure boilers, due to its high calorific value, high yield, seed propagation, short cycle, and to the possibility of full mechanization of its agricultural processes. However, there is still a lack of information about its cultural practices. To this end, this research aimed to evaluate the influence of row spacing and plant population on the yield performance of biomass sorghum. The experimental design was a randomized block, in factorial scheme of 4 x 4, with four row spacings (0.5, 0.7, 0.9 and 1.1m), and four plant populations (80,000; 100,000; 120,000 and 140,000 plants ha-1), with three replications. The characteristics evaluated were: plant height, stem diameter, number of leaves, number of tillers per plant, fresh weight per plant and biomass. Total biomass yield was greatly influenced by the row spacing, showing a sharp reduction when row spacing increased, in the two years of study, changing from 180.27 to 114.42t ha-1 in the 2012/13 crop year, and from 146.50 to 102.56t ha-1 in the 2013/14 crop year, for 0.5 and 1.1m between rows, respectively. The lowest yields observed in the second year of the study were due to unfavorable weather conditions in the period.

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Effect of days postburning and calcium oxide on the fermentation, aerobic stability and nutritional characteristics of sugarcane silage for finishing Nellore steers

Grass and Forage Science ◽

10.1111/gfs.12377 ◽

2018 ◽

Vol 73 (3) ◽

pp. 671-684 ◽

Cited By ~ 1

Author(s):

Anna Paula T. P. Roth ◽

Gustavo R. Siqueira ◽

Carlos H. S. Rabelo ◽

Matheus H. Moretti ◽

Carla J. Härter ◽

...

Keyword(s):

Calcium Oxide ◽

Aerobic Stability ◽

Nutritional Characteristics

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What is the best additive to use at the ensiling of sugarcane SP81-3250?

Animal Production Science ◽

10.1071/an14158 ◽

2014 ◽

Vol 54 (10) ◽

pp. 1682 ◽

Cited By ~ 4

Author(s):

C. H. S. Rabelo ◽

A. P. Costa ◽

A. V. Rezende ◽

C. J. Härter ◽

L. A. Florentino ◽

...

Keyword(s):

Gas Production ◽

Control Treatment ◽

Upward Trend ◽

In Vitro Fermentation ◽

Ph Values ◽

Bacterial Inoculants ◽

Aerobic Stability ◽

Nutritional Characteristics ◽

Commercial Inoculants

Our objective was to determine the best additive to use for the ensiling of sugarcane SP81-3250 based on the nutritional properties and aerobic stability of the silages. The additives evaluated were (1) and (2): salt (NaCl) at rates of 1.0 or 2.0 kg/100 kg fresh sugarcane (as-is basis), respectively; (3) and (4): quicklime (CaO) at rates of 1.0 or 2.0 kg/100 kg fresh sugarcane, respectively; (5) and (6): commercial inoculants Silobac® and Maize All®; and a control treatment. The addition of quicklime reduced the NDF and ADF contents of the silages by 11% compared with the control treatment, but did not increase the digestibility. On the other hand, after 24 h of in vitro fermentation, the application of 1.0 and 2.0% salt reduced the gas production by 34.15 and 33.55 mL/g OM, respectively, and the IVOMD was reduced 5.74 and 5.90%, respectively, compared with the untreated silage. Moreover, the addition of quicklime elevated the pH of the sugarcane silages, with a trend towards an increase in the DM recovery. In contrast, the bacterial inoculants did not alter the pH values, but there was an upward trend for a DM recovery. After the silos were opened, the silages that were treated with salt (independent of the dose) and 1.0% quicklime exhibited greater stability. We recommend applying 1.0 kg of quicklime to each 100 kg of sugarcane at the time of ensiling to improve the nutritional characteristics of sugarcane silage variety SP81-3250.

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Agronomic Evaluation of Sweet Sorghum in Semiarid Region: Cultivar and Spacing Effects

Journal of Agricultural Science ◽

10.5539/jas.v10n10p103 ◽

2018 ◽

Vol 10 (10) ◽

pp. 103

Author(s):

Tatiana Maria da Silva ◽

Alexandre Bosco de Oliveira ◽

Joana Gomes de Moura ◽

Bruno França da Trindade Lessa ◽

Lamartine Soares Cardoso de Oliveira

Keyword(s):

Sweet Sorghum ◽

Sandy Loam ◽

Block Design ◽

Stress Factors ◽

Northeastern Brazil ◽

Semiarid Region ◽

Leaf Angle ◽

Row Spacing ◽

Agronomic Characteristics ◽

Spacing Effects

The objective of this study was to evaluate the agronomic characteristics of two sweet sorghum varieties for row spacing in the semiarid region of the State of Ceará, Brazil. Hence, an experiment was carried out on the Experimental Farm of the Federal University of Ceará, in two agricultural cycles (2015 and 2016), in sandy loam Planosol during the rainy season. Two sweet sorghum varieties (BRS 506 and SF 15), cultivated at 50, 60, 70, and 80 cm row spacing, were evaluated at different times after sowing (30, 45, 60, 75, and 90 days), in a randomized block design repeated four times in the arrangement of subdivided plots (2 × 4 × 5). The BRS 506 variety had higher mean number of leaves and leaf angle +3 in the two cycles evaluated. The highest mean plant height was observed at 90 DAS (328.11 cm). The stalk diameter at 15.59 mm was greatest with 70 cm spacing between rows. The chlorophyll content of the leaves may be influenced by stress factors, such as water and mineral deficiency, primarily nitrogen. The best results for chlorophyll occurred in the first cycle, in which the greatest mean was observed at 75 days, while in the second cycle, a year that presented low precipitation (water stress), the greatest means were observed at 30 days. Taking into consideration our results, BRS 506 variety is recommended for cultivation in semiarid northeastern Brazil, presenting good agronomic characteristics, when sown with 70 cm spacing between the rows.

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