International Scholarly Research Notices / 2014 / Article / Tab 4

Research Article

Response of Yield and Yield Components of Tef [Eragrostis tef (Zucc.) Trotter] to Tillage, Nutrient, and Weed Management Practices in Dura Area, Northern Ethiopia

Table 4

Pooled data analysis (2008-2009) results of the separate and interaction effects of the treatments on yield and yield components of tef crop.

TreatmentTLPH (cm)PL (cm)GY (t ha−1)AGB (t ha−1) HI (%)

Tillage (T)
 Conventional tillage (6 times) passes =T14.4c83b14b1.2b4.9c0.24b
 Four times tillage passes = T25.9a100a22a1.7a6.0a0.28a
 Reduced tillage (single tillage pass) = T34.7b83b16b1.2b5.3b0.23b
Fertilizer (F)
 No fertilizer = F14.3c66e13c0.81d3.9d0.21b
 23 kg N ha−1 = F26.4b87d19b1.1c6.1c0.18c
 23 kg N ha−1 and 10 kg P ha−1 = F36.8a103a22a1.7a7.4a0.23a
 23 kg N ha−1 and 2.5 t ha−1 manure = F46.7a97b21a1.4b6.6b0.21b
 2.5 t ha−1 manure = F56.4b93b19b1.1c6.0c0.18c
Weed control practices (W)
 Hand weeding = W16.6a94a21a1.6a5.5a0.31a
 2,4D at 0.75 kg ha−1 at five-leaf stage = W26.1b87b18b1.3b4.4b0.30a
 2,4D at 0.75 kg ha−1 at six-leaf stage = W35.3c82c15c1.0c4.0c0.25c
 2,4D at 150 kg ha−1 at five-leaf stage = W45.3c84c14cd1.1c3.9cd0.28b
 2,4D at 150 kg ha−1 at six-leaf stage = W54.6d78d12d1.0c3.6d0.28b
Interaction
 T × F*********
 T × W*ns****
 F × Wns*****ns
 T × F × W***********

Means within columns with different letters are significantly different at .
Significant at the 0.05 probability level; significant at the 0.01 probability level; ns: nonsignificant at .
× indicates interaction; TL: tiller number per plant counted just before harvesting; PH: plant height; PL: panicle length; GY: grain yield; AGB: above ground biomass yield; HI: harvest index.