Nitrogen Use Efficiency, Nitrogen Fertilizers, NUE, Nitrogen and the Environment
Hand Planter Internal Drum + seed sizes, weights
OSU Hand Planter
Last update: July 27, 2016
Hand Planter Data/Results
Hand Planter Pictures  
Hand Planter Design/Specifications  
Developing World (Pictures)  
 
El Salvador, 2 seeds per strike El Salvador, 2 seeds per strike
Two Drums sent to Dr. Edgar Ascencio, El Salvador, that should deliver 2 seeds per strike

R Drum, currently being tested R Drum currently being tested to deliever 2 seeds/strike
750A internal drum
750A fertilizer drum

Internal drum examples OSU hand planter

Internal Drums Developed by OSU for the reciprocating hand planter

One seed size (3263 seeds/ kg)
Drum 260-20
Drum 450

Internal drum examples OSU hand planter

Fertilizer Drum, 1.5 grams

Fertilizer drum
(bottom, left) provides 1.5 g urea per strike per plant
1. Population of 70,000 seeds/hectare
2. Each strike (1.5 grams) =  50 kg N/ha

 osu hand planter internal drum 1.9g cavity  1.9 g internal drum osu hand planter

Drum above delivers 1.9g per strike
(equivalent of 60 kg N/ha for a population of 70,000 seeds/ha)

1.9

Seed Sizes Evaluated (Omara trial below)
Hand planter for maize (Zea mays L.) in the developing world. (J. Plant Nutr.)
1999-2015
Maximum seed size:  2593 seeds/kg (1176 seeds/lb)
Minimum seed size:  5060 seeds/kg  (2295 seeds/lb)

Drums:  450s, 260, 235, 260b, 260w, 260d, 716, 716m, + fertilizer drum

Table 1: Maize hybrids, density (seeds kg-1) and volume (ml kg-1) of maize seed used in this study

Hybrid

Density (seeds kg-1)

Volume (ml kg-1)

DKC 62-09

4210

5263

DKC 62-26

4344

5556

DKC 63-55

3263

4255

PO876HR

4050

5263

P1395XR

3846

4444

P1395YHR

2652

3448

P1395AM1

3577

4545

P1498HR

3017

3846

 
Hand Planter Results, February 2015
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

 

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)

New Drums, February 13, 2015 (Fertilizer Drums Included)
New Drums B (12) and R Internal drums OSU hand planter internal drums hand planter OSU
 
El Salvador Bean Planting