scholarly journals The dynamics of soybean seed production and cost structure at farmer level in Konawe and South Konawe Districts, Southeast Sulawesi Province

2021 ◽  
Vol 306 ◽  
pp. 02018
Author(s):  
Siti Mutmaidah ◽  
Dian Adi Anggraeni Elisabeth
Keyword(s):  
Leaf Rust ◽  
Seed Production ◽  
Soybean Seed ◽  
Cost Structure ◽  
Raw Material ◽  
Soybean Seedling ◽  
Rust Disease ◽  
Financial Feasibility ◽  
Net Profit ◽  
Cross Tabulation

Research aimed to obtain information on the dynamics of soybean seedling in Southeast Sulawesi Province and its income structure at farmer level. The research was conducted in Landano Sub-district, Konawe Selatan Regency and Pondidaha Sub-district, Konawe Regency which were selected purposively as soybean centers in Southeast Sulawesi. Data collected through interview, observation and documentation studies were analyzed descriptively using cross tabulation, including financial feasibility of soybean seed production. In 2010-2018 there were fluctuations in the planting area and soybean harvest. The highest production and productivity occurred in 2016, experiencing an increase of 21% even though the planting area decreased by 22% from 2015. However in 2016, soybean seed production in Southeast Sulawesi was only able to meet 73.5 % of the need for seeds in the province. Anjasmoro is a preferable variety by farmers because its large seed is suitable for raw material of tofu and tempeh industry. In addition, other characteristics of Anjasmoro interested in are its resistant to falling, leaf rust disease, and pod breaking. Analysis of soybean seed production at breeder farmer level showed that from selling 1,000 kg of seeds, the net profit obtained was IDR 262,100 with an R/C ratio > 1.

Interference and Seed Production by Common Lambsquarters (Chenopodium album) in Soybeans (Glycine max)

Weed Science ◽  
1990 ◽  
Vol 38 (2) ◽  
pp. 113-118 ◽  
Author(s):  
S. Kent Harrison
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Chenopodium Album ◽  
Soybean Seed ◽  
Dry Weight ◽  
Threshold Level ◽  
Yield Reduction ◽  
Significant Treatment ◽  
Weed Biomass ◽  
Common Lambsquarters

Multiple regression and response surface plots were used to analyze the effects of common lambsquarters population density and interference duration on weed growth and soybean seed yield. Under favorable growing conditions in 1986, weed biomass production at all population densities and interference durations was four to five times that produced in 1987, under less favorable conditions. However, there was no significant treatment by year interaction for soybean seed yield reduction by common lambsquarters, and production of each kg/ha weed biomass resulted in an average soybean yield reduction of 0.26 kg/ha. Utilizing 5% yield loss as an arbitrary threshold level, the regression equation predicted a common lambsquarters density threshold of 2 plants/m of row for 5 weeks of interference after crop emergence and 1 plant/m of row for 7 weeks. Seed production by individual common lambsquarters plants was highly correlated (r=0.92) with weed dry weight, and seed production ranged from 30 000 to 176 000 seeds/plant.

scholarly journals Electrical conductivity of the seed soaking solution and soybean seedling emergence

2004 ◽  
Vol 61 (2) ◽  
pp. 164-168 ◽  
Author(s):  
Roberval Daiton Vieira ◽  
Angelo Scappa Neto ◽  
Sonia Regina Mudrovitsch de Bittencourt ◽  
Maristela Panobianco
Keyword(s):  
Electrical Conductivity ◽  
Water Content ◽  
Seedling Emergence ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Soybean Seedling ◽  
Seed Soaking ◽  
Laboratory Conditions ◽  
Field And Laboratory Conditions

Vigor of soybean [Glycine max (L.) Merrill] seeds can be evaluated by measuring the electrical conductivity (EC) of the seed soaking solution, which has shown a satisfactory relationship with field seedling emergence, but has not had aproper definition of range yet. This work studies the relationship between EC and soybean seedling emergence both in the field and laboratory conditions, using twenty two seed lots. Seed water content, standard germination and vigor (EC, accelerated aging and cold tests) were evaluated under laboratory conditions using -0.03; -0.20; -0.40 and -0.60 MPa matric potentials, and field seedling emergence was also observed. There was direct relationship between EC and field seedling emergence (FE). Under laboratory conditions, a decreasing relationship was found between EC and FE as water content in the substrate decreased. Relationships between these two parameters were also found when -0.03; -0.20 and -0.40 MPa matric potentials were used. EC tests can be used successfully to evaluate soybean seed vigor and identify lots with higher or lower field emergence potential.

scholarly journals INDUCTION OF SYSTEMIC ACQUIRED RESISTANCE OF WHEAT SEEDLINGS AGAINST LEAF RUST DISEASE.

2008 ◽  
Vol 33 (1) ◽  
pp. 243-256
Author(s):  
Marian Thabet ◽  
E. Gado ◽  
M. Najeeb ◽  
S. El -Deeb
Keyword(s):  
Leaf Rust ◽  
Systemic Acquired Resistance ◽  
Acquired Resistance ◽  
Rust Disease ◽  
Wheat Seedlings

scholarly journals Stability of Arabica coffee genotype (Coffea arabica L.) against leaf rust (Hemileia vastatrix)

2021 ◽  
Vol 748 (1) ◽  
pp. 012002
Author(s):  
Sabam Malau ◽  
Albiner Siagian ◽  
Maria Rumondang Sihotang
Keyword(s):  
Leaf Rust ◽  
Block Design ◽  
Research Result ◽  
Dry Season ◽  
Environment Interaction ◽  
Rust Disease ◽  
Hemileia Vastatrix ◽  
Arabica Coffee ◽  
Coffee Leaf Rust ◽  
Rust Severity

Abstract Coffee is now experiencing a serious threat from fungus Hemileia vastatrix which caused epidemic of rust disease in America, Africa, and Asia. As solution, the use of resistant cultivars is the best way. However, interaction between genotype and environment can change the rank of genotypes that shows instability of these genotypes against leaf rust. Purpose of this research was to study stability of genotypes of Arabica coffee against coffee leaf rust. A field experiment was arranged as factorial randomized complete block design with 2 factors (genotypes and climate zones) with three replication. The observed parameters were branch rust incidence, leaf rust incidence, and leaf rust severity. This research result showed significant genotype x environment interaction in all variables. Length of dry season is the most important factor affecting coffee leaf rust because it had the highest correlation coefficient with leaf rust severity (r = 0.662**). Less length of dry season should be the first criteria for selection of coffee farms. The most desired genotype was G7 which performed low leaf rust severity (7.71%) and had a stable resistance indicated by the same leaf rust severity in all environments and 6 SMg. Due to the significant interaction between genotypes and the environment, the genotype to be planted in a region must be tested in that region first.

Calcium Effects on Soybean Seed Production, Elemental Concentration, and Seed Quality

Crop Science ◽  
2000 ◽  
Vol 40 (2) ◽  
pp. 476-482 ◽  
Author(s):  
M.G. Burton ◽  
M.J. Lauer ◽  
M.B. McDonald
Keyword(s):  
Seed Production ◽  
Elemental Concentration ◽  
Seed Quality ◽  
Soybean Seed ◽  
Calcium Effects

scholarly journals Soybean Seed Production and Nitrogen Nutrition

10.5772/52287 ◽  
2013 ◽  
Author(s):  
Takuji Ohyama ◽  
Ritsuko Minagawa ◽  
Shinji Ishikawa ◽  
Misaki Yamamoto ◽  
Nguyen Van Phi Hung ◽  
...  
Keyword(s):  
Seed Production ◽  
Nitrogen Nutrition ◽  
Soybean Seed

Seed production and gametophyte formation in Agave tequilana and Agave americana

Botany ◽  
2008 ◽  
Vol 86 (11) ◽  
pp. 1343-1353 ◽  
Author(s):  
Rocio E. Escobar-Guzmán ◽  
Flor Zamudio Hernández ◽  
Katia Gil Vega ◽  
June Simpson
Keyword(s):  
Seed Production ◽  
Female Gametophyte ◽  
Male Gametophyte ◽  
Raw Material ◽  
Low Fertility ◽  
Agave Tequilana ◽  
Genetic Incompatibility ◽  
Gametophyte Development ◽  
Agave Americana ◽  
Female Gametophyte Development

Agave tequilana Weber var. azul is the raw material used in the production of tequila. This species has a life cycle of approximately 6–8 years; however, owing to the practice of removing the inflorescence to conserve accumulated sugar reserves, the main form of reproduction is asexual. Little attention has, therefore, been paid to the process of flowering and the factors leading to low levels of germination and seedling viability have not been investigated in detail. The objective of this study was to document gametophyte development, seed production, and germination in A. tequilana under different pollination treatments and in an interspecies cross with Agave americana L. Seed production and germination efficiency was low for both A. tequilana and A. americana under the different pollination treatments, although interspecies crosses did produce some viable seeds. Development of the male gametophyte in both species is of the successive type, producing pollen grains with dicolpate morphology. Female gametophyte development is of the Polygonum monosporic type. The results obtained suggest that genetic incompatibility, inbreeding effects, factors affecting pollen development and germination, or errors in female gametophyte development may contribute to the low fertility observed for A. tequilana and A. americana.

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