/
Shortened Soybean Germ Short Presentation of Survey Results Shortened Soybean Germ Short Presentation of Survey Results

Shortened Soybean Germ Short Presentation of Survey Results - PowerPoint Presentation

tatiana-dople
tatiana-dople . @tatiana-dople
Follow
350 views
Uploaded On 2018-10-28

Shortened Soybean Germ Short Presentation of Survey Results - PPT Presentation

wwwagrodailycom Purpose The purpose of this referee is to obtain enough data to propose a rules change from an 8 day germination test to a 7 day germination test Some labs use a 7day test period and other labs use an 8day test period as specified by AOSA Rules This referee will be used ID: 700172

paper seeds test hard seeds paper hard test sand count days day germination period layer percentage methods covered rules

Share:

Link:

Embed:

Download Presentation from below link

Download Presentation The PPT/PDF document "Shortened Soybean Germ Short Presentatio..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.


Presentation Transcript

Slide1

Shortened Soybean Germ

Short Presentation of Survey Results

www.agrodaily.comSlide2

Purpose

The purpose of this referee is to obtain enough data to propose a rules change from an 8 day germination test to a 7 day germination test.

Some

labs use a 7-day test period and other labs use an 8-day test period as specified by AOSA Rules. This referee will be used to determine whether we can standardize to a 7-day test and potentially create better uniformity in testing.

www.artacadvisory.comSlide3

Brief Overview of Planting Methods - AOSA

Substrata:B (Between Blotters); T (Paper Toweling); S (Sand); TC (On Top of Creped Cellulose Paper Without a Blotter); TCS (On Top of Creped Cellulose Paper Without a Blotter and Covered with ½” to ¾” of Sand.

Temperature:

25C; 20-30C

First Count (Days):

5

Final Count (Days):8Specific Requirements:Hard seeds: See section 6.2d and 6.9m(6).6.2d: Hard Seeds –

Seeds that remain hard at the end of the prescribed test period because they have not absorbed water due to an impermeable seed coat. Seeds known and recognized to contain hard seed are indicated in either the “Specific Requirements and Notes” column or “Fresh and Dormant Seed” column of Table 6A. The percentage hard seed is to be reported in addition to the percentage germination.

6.9m(6): Hard Seeds –

The percentage of hard seeds it to be reported in addition to the percentage germination. If swollen seeds or seeds that have started to germinate are present at the end of the prescribed germination period, remove all hard seeds (record their number)…….continue the test for 5 additional days. The additional normal seedlings shall be included in the percentage of germination.Slide4

Brief Overview of Planting Methods – Canada M & P

Substrata:Sand: Seeds are placed on a level layer of moist sand and covered with a layer of uncompressed sand to a depth of 10 to 20 mm, depending on the size of the seed. The quantity of water added will depend on the particle size of the sand and the characteristics of the seeds to be planted. As a guideline, for 24-mesh sand with no vermiculite added, add 125 ml water per

litre

of sand or add water until sand can be formed into a ball when squeezed in the palm of the hand, the ball breaking freely when pressed between two fingers.

RT (Rolled Paper (Towels)): Seeds are evenly spaced on two sheets of standard weight (38 lb.) or a single sheet of heavy weight (76 lb.) germination paper, then covered with a single sheet. The paper is rolled and placed in an upright position. The paper should be moistened until its wet weight is about three times that of its dry weight.

Temperature

25CFirst Count (Days)

N/A

Final Count (Days)

7

Hard Seeds:

If

hard seeds are found

at a low level they are treated as dead

.

If

hard seeds are found at a

higher level

(5-10%), the seeds are extended,

then at the end of

the extension any remaining hard seeds are called dead.Slide5

Brief Overview of Planting Methods - ISTA

Substrata: BP (Between Paper): The seeds are germinated between two layers of paper. This may be achieved by:

Loosely covering the seeds with an additional layer of filter paper.Placing the seeds into folded envelopes which may be placed in a flat or upright position.

Placing the seeds in rolled paper towels (the rolls must be placed in an upright position).

The substrates are kept in closed boxes, wrapped in plastic bags or placed directly on trays in a cabinet germinator provided the relative humidity in the germinator can maintained very near saturation.

TPS (Top of Paper Covered with Sand):

The seeds are germinated on top of a moistened sheet of crepe cellulose paper which is covered with a 2 cm layer of dry sand. Crepe cellulose paper is a multi-layered paper pad (e.g. Versa-Pak).

S (Sand):

The seeds are planted on a level layer of moist sand and covered with 10-20 mm of uncompressed substrate, depending on the size of the seed. To ensure good aeration, it is recommended that the bottom layer be loosened by raking before sowing.Slide6

Brief Overview of Planting Methods - ISTA

Temperature:20-30C; 25CFirst Count (Days)

5Final Count (Days)8No additional special instructions.

Notes:

The prescribed test period may be extended 7 days or up to half the prescribed period.

Hard seeds are counted and reported as such on the ISTA Certificate.Slide7

Comparisons of the Three Rules:

AOSA and ISTA are the most similar:

5 Day First Count

8 Day Final Count

20-30C or 25C

Hard Seeds are reported as such.

Canada M&P is slightly different:No 1

st

Count

7 Day Final Count

25C

Hard Seeds are reported as dead seeds. (Unless there is a large percentage, then the test is extended).

www.poandpo.comSlide8

Types of Rules/Methods That Are Followed:Slide9

Amount of Soybeans TestedSlide10

AOSA Warm Test Methods

www.unitedsoybean.orgSlide11

Substrata Used in TestingSlide12

Sand – Preferred Method or Retest MethodSlide13

Temperatures and LightSlide14

Duration of Test Period

www.pinterest.comSlide15

Duration of Test – Early TerminationSlide16

Duration of Test - First CountsSlide17

Duration of Tests - Test ExtensionsSlide18

Post Germ TZSlide19

Conclusion

There are various nuances in how each laboratory is testing Soybean samples. The goal of this referee is to obtain enough data to support an AOSA rules proposal.

THANK YOU!