The Effects of Some External Management Factors on the Nitrogen Composition of Cattle Manure on Smallholder Farms

Figure 3

NH₄-N dynamics in manure of the rainy season storage experiment. Error bars represent standard error of the mean values. Continuous lines represent the best-fit regression equations for NH₄-N dynamics in manure during the dry season experiment. The solid line (—) represents the best-fit regression for the Medium quality manure treatments. The dashed line (- - - -) represents the best-fit regression for the Low quality manure treatments. 𝑌 represents the amount of NH₄-N (mg/kg manure DM) in the manure. Medium quality manure: 𝑌=144.7𝑒^0.0349𝑥, 𝑅²=0.508. Low quality manure: 𝑌=240.7𝑒^0.0201𝑥, 𝑅²=0.571. The rate equations for NH₄-N dynamics between the manure sources did not differ at significance level α = 0.05.