2005

2006

2007

2008

2009

Harvest system

L

L

L

U

L/U

L/U

Control

---

---

---

---

---

204

1

131

83

132

186

160

199

2

228

185

179

270

213

251

3

227

204

206

311

241

274

LSD (0.05)

5

9

24

43

35

24