Phosphorus and Potassium Fertilization Effects on Soybean Seed Quality and Composition

Soybean production in the system of organic agriculture is not very demanding, and this has been well documented both through experimental results and commercial production. However, one of the biggest problems in organic production is the lack of adequate pre-sowing treatments. Therefore, the aim of this study was to examine the effect of the electrostatic field. This is a physical treatment that was first used for seed treatment in the 18th century but has mostly been neglected since then. Seeds of five soybean genotypes with differently colored seed coats (yellow, green, dark green, brown, and black) were included in this study. The seeds were exposed to different values of direct current (DC) with the following voltages: 0 V (control), 3 V, 6 V, and 9 V, to which the seeds were exposed for 0 min (control), 1 min, and 3 min. After exposing the seeds to the electric field, the physiological properties of seeds and seedlings at the first stage of growth were evaluated. The results show that the effect of the electrostatic field on seed quality depends on the genotype, voltage, and exposure time. The application of DC can be a suitable method for improving seed germination and the initial growth of soybean seedlings. In addition, the results indicate that it is necessary to adjust the DC treatment (voltage and duration of exposure of seeds) to particular genotypes since inadequate treatments may reduce the quality of seeds.

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Potato (Solanum Tuberosum L.) Response to Nitrogen, Phosphorus and Potassium Fertilization Rates

Communications in Soil Science and Plant Analysis ◽

10.1080/00103624.2018.1457159 ◽

2018 ◽

Vol 49 (11) ◽

pp. 1314-1330 ◽

Cited By ~ 2

Author(s):

K. Mokrani ◽

K. Hamdi ◽

N. Tarchoun

Keyword(s):

Solanum Tuberosum ◽

Solanum Tuberosum L ◽

Fertilization Rates ◽

Potassium Fertilization ◽

Phosphorus And Potassium ◽

Nitrogen Phosphorus

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Genetic diversity in soybean seed quality under different storage conditions

Semina Ciências Agrárias ◽

10.5433/1679-0359.2017v38n1p57 ◽

2017 ◽

Vol 38 (1) ◽

pp. 57

Author(s):

Daniele Piano Rosa ◽

Danúbia Aparecida Costa Nobre ◽

Diego Santos Oliveira ◽

Francisco Charles dos Santos Silva ◽

André Ricardo Gomes Bezerra ◽

...

Keyword(s):

Genetic Diversity ◽

Seed Quality ◽

Soybean Seed ◽

High Standard ◽

Storage Conditions ◽

Seed Vigor ◽

Soybean Cultivars ◽

High Germination ◽

Physiological Quality ◽

Almost All

This study aimed to assess the effect of genetic diversity on physiological quality of soybean seeds stored in cold chamber and under environmental conditions. Ten cultivars were assessed in a randomized factorial design (2x10). Factor 1 corresponded to two storage conditions and factor 2 to ten soybean cultivars, with four replications. The evaluated variables were total germination (G%), first count of germination (F%), percentage of abnormal seedlings (AS%), germination speed index (GSI), water content (WC), electrical conductivity (EC), dry matter of seedlings (DMS) and length of seedlings (LS). Data underwent ANOVA, followed by Scott Knott test, as well as multivariate analysis of genetic diversity. The results showed a higher physiological quality for seeds under cold storage. Half of the cultivars (FPS Júpiter, FPS Urano, FPS Antares, FPS Netuno and CD 250) presented high germination rates and seed vigor, being thus indicated as high-standard materials for further breeding programs. Besides that, storage environment had influence on the clustering of soybean cultivars. Moreover, cultivars had genetic dissimilarity for almost all assessed traits as G%, GSI, F%, AS%, EC, DMS and LS.

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