Abstract:
This study therefore evaluated the productivity of Chlorisgayana under varying soils in South
Western Uganda. The productivity of Chlorisgayana in selected districts in South Western
Uganda (Kiruhura, Ibanda, Mbarara, Isingiro, Sheema)was already established by Lagu et al
(2017). The present study profiled the soilsin the above districts where the Chlorisgayana was
grown for total organic matter, available phosphorus, extractable bases (potassium, sodium,
magnesium and calcium), total nitrogen and textural classes (sand, clay, silt) following standard
procedures described by Okaleboet al (2002). The results showed that the highest quantity of
seeds and biomass per acre of Chlorisgayana grass is attained if only all the essential primary soil
nutrients (N, P, K) are above the critical levels. Hence, Kiruhura district having soils with the
highest levels of essential soil nutrients, N (4.00±0.77%), P (33.73±12.98ppm)above the critical
levels (N, 2%; P, 15ppm)recorded the highest quantity of Chlorisgayana seeds harvested per acre
(18.03±3.03 kg per acre) and hay bales per acre (311.11 kg/acre) compared to the other districts.
Hence, efforts towards soil testing and soil amendments with essential nutrients (NPK) need to
be intensified for increased productivity of Chlorisgayana in South Western Uganda |
