Effects of Ridge Tillage and Organic Manure Treatment on Growth, Leaf Nutrient Concentration and Pearl Millet (Pennisetum glaucum) Stover Yield in Semi-arid Northeast Nigeria


Ridge tillage
land preparation
manure amendment
nutrient composit ion

How to Cite

Chiroma, A. M., Alhassan, A. B., Usman, K., Bababe, B., Kundiri, A. M., & Tekwa, I. J. (2021). Effects of Ridge Tillage and Organic Manure Treatment on Growth, Leaf Nutrient Concentration and Pearl Millet (Pennisetum glaucum) Stover Yield in Semi-arid Northeast Nigeria. Journal of Agricultural Economics, Environment and Social Sciences, 7(2), 108-127. Retrieved from http://jaeess.com.ng/index.php/jaeess/article/view/112


In the drier areas where crop production is often constrained by low and variable rainfall, the
search continues for innovative practices in soil and crop management to make maximum use of
the water available for crop growth. Field experiments were therefore conducted in the rainy
season of the year 2020 at two locations with contrasting soil types (Sandy Loam), at Teaching
and Research Farm of Faculty of Agriculture, University of Maiduguri (Unimaid) and Sandy Clay
Loam texture at Alakaramti village both located within Maiduguri and its environs, in northeast
Nigeria to evaluate the efficacy of ridging and manure amendment on improving the productivity
of the millet crop. In each site, six (6) land preparation and manure treatments consisting of: flatbed
(FB), open-ridge (OR), tied-ridge (TR), flat bed + manure (FBM), open-ridge + manure
(ORM), and tied-ridge + manure (TRM) were laid out in randomized complete block design with
four replicates. The results indicated that soil treated with organic manure irrespective of land
preparation type or location had greater nutrient levels compared to the un-amended soil. Millet
plants grown in FBM, ORM and TRM plots had increased plant height, number of tillers per plant
and stem diameter irrespective of differences in soil type or time of measurement. Millet leaf N, P
and K contents were all higher in the manure amended treatments than in the un-amended
treatments irrespective of land preparation method or location. The spectacular growth
performance exhibited by millet plants grown under manure amended treatments also translated
in higher stover yields. Mean increases in straw yield relative to the FB treatment were 36.8% for
FBM, 41.8% for ORM and 47.4% for TRM on the sandy loam soil. The corresponding increases
in straw yield due to these treatments on the sandy clay loam soil were 116.7% for FBM, 81.1%
for ORM and 146.7% for TRM. These results reinforce earlier findings that combining the land
preparation practice of ridge tillage (RT) with application of animal manure such as cow dung
has the potential of improving the productivity of the millet crop grown under the prevailing
edapho-climatic conditions of Maiduguri in northeast Nigeria.



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