Journal of Agricultural Science and Technology
Journal of Agricultural Science and Technology
JAST
Agriculture
http://jast.modares.ac.ir
1
admin
1680-7073
2345-3737
10.22034/jast
en
jalali
1385
1
1
gregorian
2006
4
1
8
2
online
1
fulltext
en
Effect of Variation in Tillage Systems on Maize (Zea mays L.) Establishment and Grain Yield in a Semi-Arid
Tropical Climate
On-farm experiments were designed to investigate the response of maize establishment and grain yield to variation in tillage systems. The tillage treatments included arara ploughing followed by zig-zag harrowing and arara ridging (T1); emcot ploughing fol-lowed by zig-zag harrowing and emcot ridging (T2); mouldboard ploughing followed by disc harrowing and mouldboard ridging (T3); disc ploughing followed by disc harrowing and disc ridging (T4); manual ridging (T5). Generally, shallow (0-15.0 cm) tilled plots of T1 showed lower root lengths and root length densities than deep (0.28.0 cm) tilled plots of T4. However, there was higher soil penetration resistance (PR) in T1 than in T4. In-creased PR in the range of 4.0 – 4.5 MPa decreased plant height (Hp), leaf area index (LAI), and maize grain yield (Yg). Reductions in Yg in the range of 35 – 50% can be ex-pected for a reduction in soil moisture contents from 24.2 – 15.7%, w/w. Tillage treat-ment significantly (P<0.01) affected Yg. However, there were no significant differences at P<0.05 in the emergence rate index (ERI), LAI and Yg for the interactions of nitrogen levels planting methods tillage treatments.
Leaf area index,Soil penetration resistance,Tillage systems
171
179
http://jast.modares.ac.ir/browse.php?a_code=A-10-1000-3443&slc_lang=en&sid=23
D. D.
Yousuf
D. D.
Yousuf
100319475328460045484
100319475328460045484
Yes
Department of Agricultural Engineering, Faculty of Engineering, Ahmadu Bello University, Zaria, Nigeria
Department of Agricultural Engineering, Faculty of Engineering, Ahmadu Bello University, Zaria, Nigeria