informal system

8/12/2019 Informal System

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PRACTICAL

APPROACHES FOR

SEED QUALITY

ASSURANCE


2/43

. !'a&es%)* +,lle+% samples pla+ed in an#

,$ %'e $,ll,-ing +an/ plas%i+ 0ag ,& an#

s1i%a0le +,n%aine&.

Hand method Draw a handful of seed from each bag

(assuming

50g/handful). Mix thoroughly the seed samples taken from

each bag.


3/43

Fa0&i+a%ed T&ie& (am0,, T&ie&/

app&,3ima%el# 45 in+'es l,ng/ 4 in+'

diame%e&)


4/43

II. Seed Tes%ing


5/43

A. 6,is%1&e C,n%en%

De%e&mina%i,n

( -,&7ing sample ,$ 8

g)

49: 6C (6a3im1m)

Seed

Ce&%i$i+a%i,n S%anda&d


6/43

4. Seed 0i%ing me%',d (a% leas% 8 de'1lled

g&ains)

;%i+7< s,1nd is p&,d1+ed 1p,n 0&ea7ing ,$

g&ain ( app&,3ima%el# 49: 6C)


7/43

2. Seed s+&a%+'ing me%',d 1sing $la% s%,ne ,n

&,1g' s1&$a+e* (app&,3ima%el# 2 'eap$1l %sp

,$ seeds/ 4 %sp pe& &epli+a%i,n)

S+&a%+'ed seed in -',le g&ain app&,3ima%el# 49:

6C* p1le&i=ed g&ain a$%e& s+&a%+'ing

app&,3ima%el# m,&e %'an 49: 6C


8/43

". Feel 6e%',d

Insert hand

approximately up to the

middle of the sack If the seeds are warm,

humid and adhere on the

skin, it indicates above!" #$.

9. O+1la& seed inspe+%i,n $,& m,lds/ 'ea# seed

dis+,l,&a%i,n/ s%i+7iness indi+a%e 'ig' m,is%1&e+,n%en%.

Re+,mmenda%i,n Re>ding is

adised

i$ 6C is a0,e 49:.


9/43

. P'#si+al P1&i%# Tes%

(-,&7ing sample ,$ 9 g/

app&,3ima%el# 4 'eap$1l

%sp) ?5: P1&i%#(6inim1m) Seed



10/43

4. 6an1al sepa&a%i,n ,$ imp1&i%ies 'and

s,&%ing s%,nes/ s,il/ sand/ -eed seeds/

,%'e& +&,p seeds/ and ,%'e& plan% pa&%s

p&esen%)

P1&e Seed @ ?5:

Ine&% 6a%%e& @ 2: ( app&,3ima%el# 48 %sp)

Re+,mmenda%i,n Re+leaning is

adised i$ ine&% ma%%e& is m,&e %'an 48

%sp ,& .5 gm


11/43


12/43

C. Be&mina%i,n Tes%

> 4 seeds&epli+a%e -i%' %-, (2)&epli+a%i,ns

58: ge&mina%i,n (Seed

+e&%i$i+a%i,n s%anda&d)

Seedling eal1a%i,n a$%e& 8> 49

da#s


13/43

4. Rag d,ll me%',d

a. A0s,&0en% Cl,%'

0. Plain pape& +. Hand T,-el

e% %'e media and sp&ead ,n a $la%

s1&$a+e. S,- 4 seeds pe& &epli+a%e and +,e&

-i%'

,ne la#e& ,$ %'e media. R,ll %'e media %, ma7e a &ag d,ll and

pla+e

in plas%i+ 0ag %, main%ain m,is%1&e.

Pla+e %'e &ag d,ll in slan%ing p,si%i,n a%


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a. A0s,&0en% Cl,%'


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0. Plain Pape&


16/43

+. Hand T,-el


17/43

2. Sand 6e%',dS,il 6e%',d$ollect and sundry oil can

of sand/soil for ! hrs for

sterili%ation.

&et cool and wet thesand/soil enough to make a

ball. If the ball breaks

when tapped, it indicates

that the sand/soil is suitablefor germination.

'ow 00 seeds perreplicate and cover with thin

layer of sand/soil.

$over with plastic or othermaterials to maintainmoisture.

Re+,mmenda%i,nRe%es% i$ ge&mina%i,n is l,- d1e %, $&es'/ and 1nge&mina%ed seeds .I$ ge&mina%i,n is 0el,- 58: / in+&ease seeding &a%e a++,&dingl#.


18/43

D.a&ie%al Tes%

,&7ing sample ,$ 28 g&ams@4/ g&ains ('al$ sample ,$ %'e

&e1i&ed seed +e&%i$i+a%i,n

s%anda&d) 4 g&ains ,$ ,%'e& a&ie%ies pe&

-,&7ing sample ( in0&ed) is

all,-ed.


19/43

1. Visual inspection based on seed

morphology.

2. Separate mixtures from true-to-typevariety (inherent characteristics of the variety).

3. etermine the level of mixture.


20/43


21/43

Seed Tes% 6e%&i+

(App&,3ima%e)

P&a+%i+al Rema&7s

C,mple%e Tes% " g&ams 'and$1ls

,&

" 'eap$1l small

sa&dine +ans

6,is%1&e

C,n%en%

8 g&ams 4 'eap$1l %sp

P'#si+al P1&i%# 8 g&ams 4 'and$1l

Be&mina%i,n 8 g&ams 2 seeds 6an1al C,1n%ing

a&ie%al P1&i%# 28 g&ams 8 'and$1ls

C,ne&si,n Ta0le $,& Seed

Tes%ing Re1i&emen%s


22/43

Indi+a%,& 6e%&i+ P&a+%i+al Rema&7s

agging 9 7g 9 ,il +ans App&,3ima%el# "

gall,ns

Bene&al

6eas1&emen%

4 g&ams 4 small sa&dine

+an (488g)

Heap$1l

Bene&al

6eas1&emen%

28 g&ams 4 g&ains

Bene&al

6eas1&emen%

9 g&ams 4 %sp

C,ne&si,n Ta0le

(O%'e& 6eas1&emen%)


23/43

Thankyou


24/43


25/43

CORN

(istribution of kg registered seeds to

produce bags *+kg/bag) eneficiaries- armers who dont have access on certified seeds.$rop $ulture- pland 1ainfed2nowledge level- #inimal on seed

technology*basic seed testing techni3ues)4uality ssurance on the crop-

'eed &evel

'eeds properly dried at approximately !"

#oisture content before bagging and storage

Ass1mp%i,ns


26/43

I. Seed sampling fter processing, collect samples and place in any of

the following- can, plastic bag or any suitablecontainer.

6and method (raw two * 7) handfuls sample from each bag

*assuming 55g/handful). #ix thoroughly the seed samples taken from

each bag.


27/43

Fa0&i+a%ed T&ie& (am0,, T&ie&/

app&,3ima%el# 45 in+'es l,ng/ 4 in+'

diame%e&)


28/43

II. Seed Tes%ing


29/43

A. 6,is%1&e C,n%en%

De%e&mina%i,n

( -,&7ing sample ,$ 4G

g)49: 6C (6a3im1m)

Seed



30/43

4. Seed 0i%ing me%',d (a% leas% 8

7e&nels)

8tick9 sound is produced upon breaking of

grain * approximately !" #$)


31/43

2. ,%%le 6e%',d :ut ; handfuls of

corn kernel in a

small vinegar glass

bottle and cover

with plastic cap or

plastic bag sealed

with rubber band.he presence of

moisture indicates high

moisture content.


32/43

9. O+1la& seed inspe+%i,n $,& m,lds

'ea# seed

Re+,mmenda%i,n Re>ding is

adised

i$ 6C is a0,e 49:.


33/43

". Feel 6e%',d

Insert hand approximately up to the middleof

the sack. If the seeds are warm and humid, it

indicates above !" #$.


34/43

. P'#si+al P1&i%# Tes%

(-,&7ing sample ,$ 9

g/ app&,3ima%el# G

'and$1ls) 5: P1&i%#(6inim1m) Seed



35/43

4. 6an1al sepa&a%i,n ,$ imp1&i%ies > 'and

s,&%ing

s%,nes/ s,il/ sand/ -eed seeds/ ,%'e&+&,p

seeds/ and ,%'e& plan% pa&%s p&esen%)

P1&e Seed @ ?5:

Ine&% 6a%%e& @ 2: ( app&,3ima%el# 2 %0sp)Re+,mmenda%i,n Re>+leaning is

adised i$ ine&% ma%%e& is m,&e %'an 2%0sp.

C Be&mina%i,n Tes%


36/43

C. Be&mina%i,n Tes%>( 8 seeds &epli+a%e -i%' 2 &epli+a%i,ns)

58: ge&mina%i,n (Seed +e&%i$i+a%i,n s%anda&d) Seedling eal1a%i,n a$%e& 8>G da#s

4. Rag d,ll me%',d

a. bsorbent $loth

b. :lain paper

c. 6and >owel?et the media and spread on a flat surface.'ow 50 seeds per replicate and cover with one layer of

the

media.1oll the media to make a rag doll and place in plastic

bag to

maintain moisture.:lace the rag doll in slanting position at room

temperature.


37/43

a. A0s,&0en% Cl,%'

e% %'e media and sp&ead ,n a

$la% s1&$a+e.

S,- 8 seeds pe& &epli+a%e and

+,e& -i%' ,ne la#e& ,$ %'e

media.

R,ll %'e media %, ma7e a &ag d,ll

and pla+e in plas%i+ 0ag %, main%ain

m,is%1&e.

Pla+e %'e &ag d,ll in slan%ing p,si%i,n

a% &,,m %empe&a%1&e


38/43

7. 'and #ethod/'oil #ethod

C,lle+% and s1nd 4 ,il +an ,$sands,il $,& 9 '&s $,&

s%e&ili=a%i,n.

Le% +,,l and -e% %'e sands,il

en,1g' %, ma7e a 0all.

S,- 8 seeds pe& &epli+a%e and +,e&

-i%' %'in la#e& ,$ sands,il.

C,e& -i%' plas%i+ ,& ,%'e& ma%e&ials %,

main%ain m,is%1&e.


39/43

Re+,mmenda%i,n

Re%es% i$ ge&mina%i,n is l,- d1e%, $&es'/ and 1nge&mina%ed

seeds .

I$ ge&mina%i,n is 0el,- 58: /in+&ease seeding &a%e

a++,&dingl#.


40/43

D. a&ie%al Tes%

,&7ing sample ,$ 9 g&ams@ G'and$1ls ('al$ sample ,$ %'e &e1i&ed

seed +e&%i$i+a%i,n s%anda&d) 8 7e&nels ,$ ,%'e& a&ie%ies pe&

-,&7ing sample is all,-ed.4.is1al inspe+%i,n 0ased ,n seedm,&p',l,g#.

2.Sepa&a%e mi3%1&es $&,m %&1e>%,>%#pe

a&ie%# (in'e&en% +'a&a+%e&is%i+s ,$ %'e

a&ie%#).".De%e&mine %'e leel ,$ mi3%1&e.

Re+,mmenda%i,n I$ m,&e %'an 8 7e&nels ,$

,%'e& a&ie%ies pe& -,&7ing sample is $,1nd/

+,nd1+% %a0le s,&%ing %, dis+a&d mi3%1&es.


41/43

'eed >est #etric

*pproximate)

:ractical 1emarks

$omplete >est 00 grams 0 handfuls

#oisture

$ontent

@0 grams ; handfuls

:hysical :urityA !00 grams @ handfuls

Bermination ;0 grams 00 seeds #anual $ounting

Carietal :urityA !00 grams @ handfuls

C,ne&si,n Ta0le $,& Seed

Tes%ing Re1i&emen%s

*Same samples for physical and varietal


42/43

Indicator #etric :ractical 1emarks

agging + kg .5 oil can

Beneral

#easurement

;00 grams 000 grains

Beneral

#easurement

! grams tbsp

Beneral

#easurement

55 grams handful

C,ne&si,n Ta0le (O%'e& 6eas1&emen%)


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