Nitrogen Use Efficiency, Nitrogen Fertilizers, NUE, Nitrogen and the Environment
OSU Hand Planter (Greenseeder) Data
Last update: March 21, 2017
Hand Planter Data/Results  
Hand Planter Pictures, Maize Landscape  
Hand Planter Design/Specifications  
Developing World (Pictures)  
OSU Hand Planter    
OSU Hand Planter Data
Seed Weights (see below)
March 21, 2017, Lira Uganda (story below) Iceme Sub-County, Oyam District, northern Uganda
Uganda use of the Greenseeder Hand Planter Uganda use of the Greenseeder Hand Planter Dr. Raun, I offered a quick on-the-field training for the two men found in one (HP1) of the attached photos about how to use the OSU GreenSeeder to plant corn as well as the associated benefits. "The planter will allow my wife and I to do separate field activities since I'll not need her at the time of planting," Tony (using the planter) said. Tony is very much willing to continue to use the planter and offer feedback for improvement.   As we left our training site, we came across a group of men who were waiting to buy beef as seen in the second photo (HP2). When they saw Tony carrying the planter, they asked what it was and surprisingly, Tony explained its mode of operation and the benefits very well that I needed to only add a few comments.   I'll quote one of them (attendees to Tony): "With this planter, I think I can now plant one garden alone since I need no person to be putting seeds in the holes I make". One garden is locally an area equivalent to one acre.   It is a crop planting season in Uganda now and I'll provide more information regarding the usage of the GreenSeeder (GS) including yields that will be obtained from GS.   -- Thank you,   Lawrence, Aula
Roelof van Til (Burundi, Uganda)  Report, March 15, 2017
Table 1. Evaluation of the value of applying fertilizer beneath the soil surface, versus, appling the urea without incorporation, and on the surface, both broadcast, and as a surface UAN band.

Combined, Efaw and Perkins, 2013

Topdress N, Corn, V12

70,000 plants/ha

Methods

N, kg/ha

Mg/ha

Check

0

6.6

Hand planter (0.9 g/plant)

30

11.2

Hand planter (1.8 g/plant)

60

10.6

Broadcast

30

6.4

Broadcast

60

7.0

Dribble urea

30

9.3

Dribble urea

60

7.8

Dribble UAN

30

7.3

Dribble UAN

60

10.4

SED = 1.81

COMBINED Excel File, 2013, Perkins, Efaw.  Effect of applying fertilizer N at the surface, beneath the surface, and broadcast (simulation of the OSU hand planter value, versus farmer checks).

Chim et al., 2014

Effect of seed distribution and population on maize (Zea mays L.) grain yield. Int. Journal of Agron. http://dx.doi.org/10.1155/2014/125258
homogeneity of plant stands and the yield value
March 6, 2015
OSU Hand Planter

Figure 1: Maize seed emergence for hand planting using different number of days to first irrigation (5, 10, and 15), different seed sizes (2699, 4069, seeds/kg) using the 450S drum and one check planted by hand.


February 17, 2015
Hand Planter Results, February 2015
December 17, 2014

Brush * seed means, in percent, (singles, multiples, misses)

Brush

Seed Size

N

Percent (%)

 

 

 

Singles

Multiples

Misses

Rubber

2761

200

57.0A

31.5BC

11.5A

Rubber

3338

200

44.5B

53.0A

2.5B

Hair-like

2761

200

62.0A

26.5C

11.5A

Hair-like

3338

200

52.0AB

41.0AB

7.0AB

Drum 450S

Rubber-tire material used as the latest brush.

Hair-like brush

 

December 11, 2014

Drum by seed interaction effects on seed singulation

Seed

Drum

N

Percent (%)

 

 

 

Singles

Multiples

Misses

2652-3450

260B

30

77.1

13.3

9.6

2652-3450

260T

30

55.0

1.7

43.3

2652-3450

260W

30

81.7

12.0

6.3

2652-3450

450S

380

68.7

21.7

9.6

2652-3450

716M

111

68.2

8.5

23.1

3451-3810

260B

30

69.7

19.0

11.3

3451-3810

260T

60

69.5

12.2

18.3

3451-3810

260W

30

71.0

14.7

14.3

3451-3810

450S

300

52.7

37.8

9.5

3451-3810

716M

100

64.5

17.5

18.0

3811- 4240

260T

29

64.1

24.5

13.4

3811- 4240

450S

90

45.1

45.9

9.0

3811- 4240

716M

20

79.0

13.5

7.5


April 1, 2014 Results

Drum

Seed Size
(seeds/kg)

Singles (%)

Multiples (%)

Misses (%)

450S

 

6

92

2

450S

 

22

78

0

260-20

 

75

12

13

260-20

 

73

9

18

Hand Planter Trial Planted September 27, emergence on October 3, 2013.
OSU Hand Planter October 2013
Hand Planter Trial (September 16, 2013)
 HP Trial September HP results, September 18, 2013

Progress, Hand Planter

Internal drum examples OSU hand planter

Internal Drums Developed by OSU for the reciprocating hand planter

Hand Planter Trial (August 15, 2013)
 OSU Hand Planter Trial, Efaw OSU Hand Planter Trial OSU Hand Planter
0.80" of precipitation, evening after planting (pictures from August 16, below)
 
OSU Hand Planter Trial OSU Hand Planter
One seed size (3263 seeds/ kg)
Drum 260-20
Drum 450Internal drum examples OSU hand planter

Fertilizer Drum, 1.5 grams
Fertilizer drum (bottom, left)

== provides 1.5 g urea per strike per plant

(population of 70,000 seeds/hectare)

= 50 kg N/ha.

 

New Hand Planter Testing (July 31, 2013)
Hand Planter Data
Hand Planter Trial (July 26, 2013)
hand planter trial, July 25, 2013 Hand Planter Trial Hand Planter Trial results  HP trial  Hand Planter in muddy soil wet soil conditions
Hand Planter Trial (July 19, 2013)
Efaw Hand PlanterTrial hand planter trial Hand Planter Trial 2013 Hand Planter 2013 Hand Planter 

Plot Plan
New Hand Planter Trial, Efaw, June 28, 2013
New Omega Design Undergoes Testing, June 28, 2013
Omega HP Design
 
Hand Planter Data and Analysis

Combined Field Trials (Tables, 2011-2012, 5 locations)

Round Spring Hand Planter, January 29, 2013, light spring (pink), version going to Colombia

Round Spring Hand Planter, January 7, 2013 (difference was ....

Round Spring Hand Planter, January 3, 2013 (new Round planter...

Hand Planter Data (December 20, 2012)

Hand Planter Data (December 5, 2012) NEW RT design

Hand Planter Data (November 1, 2012)

Hand Planter Data (up to September 23) Sulu

Hand Planter Data 2012, (September 21, 2012)

Presentation made to BAE students

Data and AOV, Aug 1, 2012

Design and Development of a Stick Planter for the Developing World, Koller et al. (2012)
Maize Seed Data
Average Corn Seed Weights, g
pioneer dekalb dekalb dekalb dekalb dekalb dekalb dekalb pioneer
sample P1173HR DKC 63-46 DKC 52-59 DKC 62-34 DKC 61-22 DKC 61-35 DKC 63-42 DKC 61-69 P0902HR
1 0.245 0.277 0.301 0.240 0.333 0.264 0.291 0.257 0.310
2 0.209 0.310 0.362 0.250 0.323 0.300 0.261 0.288 0.344
3 0.263 0.290 0.298 0.236 0.268 0.253 0.271 0.215 0.364
4 0.192 0.276 0.256 0.262 0.283 0.305 0.284 0.260 0.341
5 0.275 0.274 0.275 0.248 0.377 0.259 0.220 0.293 0.263
6 0.338 0.271 0.255 0.273 0.287 0.239 0.289 0.305 0.286
7 0.291 0.294 0.279 0.252 0.274 0.322 0.308 0.227 0.328
8 0.298 0.308 0.288 0.220 0.281 0.300 0.253 0.276 0.353
9 0.222 0.260 0.295 0.237 0.258 0.248 0.289 0.212 0.316
10 0.240 0.274 0.294 0.259 0.301 0.291 0.298 0.245 0.343
11 0.246 0.256 0.211 0.284 0.265 0.248 0.237 0.259 0.271
12 0.268 0.269 0.234 0.255 0.273 0.323 0.219 0.276 0.287
13 0.250 0.348 0.305 0.307 0.272 0.345 0.280 0.313 0.309
14 0.305 0.254 0.296 0.254 0.258 0.332 0.253 0.265 0.274
15 0.253 0.206 0.274 0.233 0.341 0.362 0.269 0.241 0.307
Avg. 0.260 0.278 0.282 0.254 0.293 0.293 0.268 0.262 0.313
Std. Dev. 0.038 0.032 0.035 0.022 0.035 0.039 0.027 0.031 0.032
Total Avg. 0.278
Total Std. Dev. 0.037
Min 0.192
Max 0.377
Range 0.186
 
 Seed Weights (both pounds and kg)  
REPORTS
July 8, 2016 (Uganda, Peter Omara)

Dr. Raun, The product we have apparently works without doubt. The only part I would advise to be modified is the tip simply to avoid getting clogged up with soil. The tip I showed you in the picture (modified from here) is comparatively better than the ones that came with the planter. I have placed the planters in the hands of few farmers and they have used them with the modified tip without complains, although they had to learn and adjust to using the tool. In my own opinion, there is still a lot of work to be done on the sociological aspects, creating awareness, marketing, promotion with regard to the adoption and use of the OSU planter. Otherwise, I am confident enough to say the product we have work without doubt.  

Regards, Peter
June 28, 2016 (via Dr. Edgar Ascencio, El Salvador)

El Martes 28 de junio de 2016 17:32, Luis Navarro Arteaga <chity68@hotmail.com> escribió:   Buenas tardes Edgar, como ha estado, espero que se encuentre bien, le comento que el dia Lunes27 y martes 28 de Junio utilice el sembrador con alumnos y padres agricultores en la zona del canton El Angel y canton Sihupilapa del municipio de teotepeque, concluyendo lo siguiente: La altura del sembrador esta miu alto es de 2mts y lo tradicional anda por 1.50 mts, lo cual solo utilice 2 tubos sin el tapon El maiz que se utilizo es H-59 El tambor descarga perfectamente 1 semilla por postura y a veces dos pero muy rara vez El chuzo de metal entra perfectamente en el suelo y de igual manera la semilla cae en el hoyo , rara vez cae afuera, esto depende con la agilidad y la fuerza que se hace  al sembrar. Explique las ventajas del sembrador En conlusion: a la mayoria de alumnos y agricultores les gusto como funciona el sembrador y me preguntaron el precio del sembrador y donde lo pueden adquirir. los dos sembradores los he dejado en las 2 comunidades mencionadas ya que haran la prueba de sembrar 1 tarea con este instrumento y 1 tarea con el chuzo tradicional para evaluar tiempo y calcular area. las fotos se las envio mañana ya que voy llegando a oficina y saldre para ciudad arce. Atte. Luis  
Dr. Raun  
Here in El Salvador first planting season (the big one) is over, there is a second season in august just in small areas. In my opinion  the planter only needs a drum that delivar 2 seeds, this is an issue that farmers object because they plant two seeds per hill. I am working with JICA now (Japanese) and I have little chance to make visits to the west part of the country where they plant in august, if you want you can send me a couple of planters and see what I can do and dont forget to send me  3 or 4 drums (two seeds) to give them to the people that already have the GS.  Let me tell you that I also gave one of the planters to a project which is developed with rural students, the teacher sent me his comments which I am sharing to you in other e-mail..   Edgar Ascencio
January 19, 2016, Becca Harman, University of Tennessee. 

I evaluated 7 planters -- dibble stick (crow bar), OSU Greenseeder, Chinese Planting Hoe, Haraka Rolling Planter, Brazilian Jab (Fitarelli), CA-Seeder 100 (one man riding seeder) and a 6-row JD conservation planter. The Dibble stick and the OSU Greenseeder showed the strongest yield in both soybean residue and corn residue among all the treatments and the highest ear-stalk ratios. A complimentary study was performed comparing the efficiency and usability of the hand planters -- the OSU Greenseeder maintained a high efficiency while achieving the highest usability.   
September 9, 2015, Tanzania, Rwanda, Thomas Herlehy (Land O'Lakes)
September 2015, El Salvador, Dr. Edgar Ascencio (Fertilizer drum issues)
August 2015, Guatemala, Joe and Geena Kejr (Work with the Hand Planter)
July 2015, El Salvador, Report 2, Dr. Edgar Ascencio,
June 2015, El Salvador, Plot Plan, Updated Report 1  , Dr. Edgar Ascencio
April, 2015, Talcom Powder (TALCO) can assist to decrease bridging and misses encourntered with planting maize seed (10 g talcom powder/1000 g seed). 
May 18, 2015, Colombia, Report from Dr. Luis Narro, CIAT, Colombia (Agronomia)

July 12, 2014, Democratic Republic of Congo (report to Senator Ed Long)
March 26, 2015, Uganda, Achieving good Singulation, Lawrence Aula


Seed weights: El Salvador, Dr. Edgar Ascencio
PIONEER 3,345 seeds/kg  = 1517 seeds/lb
HE 5 G 3,275 seeds/kg = 1485 seeds/lb

Bryan Luff, Indiana, Ginseng 7000 seeds/lb = 15,428 seeds/kg

Seed weights:  Guatemala, Kristen Lacy, Curt Bowen
Hybrid seed weights:
Pioneer: 60,000 seeds /20kg = 0.33g/seed  (2827 seeds/kg)  = 1282 seeds/lb
Dekalb: 60,000 seeds /19.2kg = 0.32g/seed (3125 seeds/kg)  = 1417 seeds/lb

72000 seeds = 56 lbs
1285 seeds = 1 lb
2833 seeds = 1 kg

Maize Seed Weights (# per kg) evaluated with the Round Planter (April 5, 2013)
3017 (large round)   best drum and best brush =
3490 (medium round)
3846 (medium flat)
5012 (small round)

Seed Pictures and Weights coming from Dr. Edgar Ascencio, El Salvador

Volume (below)

  Lectura 1 Lectura 2 Lectura 3 Promedio
HS-5G 120 122 120 120.666667
PIONEER 125 129 127 127
DEKALB 129 128 128 128.333333
H-5        
H-15 130 130 130 130

 La medición se hizo poniendo en cada caso 100 ml de agua e incorporando 100 semillas, se descartaba todo y se iniciaba un nuevo Reading

#1 Platino (3475 seeds/kg ) El Salvador, supplied by Dr. Edgar Ascencio
#2 H-59 (2905 seeds/kg) El Salvador, supplied by Dr. Edgar Ascencio
#3 DK-357 (3595 seeds/kg) El Salvador, supplied by Dr. Edgar Ascencio
Pioneer: 60,000 seeds /20kg = 0.33g/seed  (2827 seeds/kg), supplied by Kristin Lacy, Guatemala
Dekalb: 60,000 seeds /19.2kg = 0.32g/seed (3125 seeds/kg), supplied by Kristin Lacy, Guatemala



April 25, 2013 - Hand Planter
4-25-13-HP-1 4-25-13-HP-5 4-25-13-HP-2 4-25-13-HP-3 4-25-13-HP-4  4-25-13-HP-6 4-25-13-HP-7 4-25-13-HP-8 4-25-13-HP-9