OSU Hand Planter for the Developing World, Internal Drums

Hand Planter Internal Drum + seed sizes, weights

Last update: May 05, 2020

Hand Planter Data/Results

Hand Planter Pictures

Hand Planter Design/Specifications

Developing World (Pictures)

Two Drums sent to Dr. Edgar Ascencio, El Salvador, that should deliver 2 seeds per strike

R Drum currently being tested to deliever 2 seeds/strike

Fertilizer drum
(above) 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

750A fertilizer drum

Internal Drums Developed by OSU for the reciprocating hand planter

Drum

Mass (g)

Volume (cm3)

A

0.69

0.507

B

0.71

0.521

OS

0.88

0.646

OM

3.36

2.468

OC

3.38

2.482

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

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

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

Three piece Handle (PVC) Holds 1.5 kg of maize seed

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

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)

B (12) and R