Influence of lime and farm yard manure( Télécharger le fichier original )par Dieudonne MUGOBOKA ISAE Busogo  Bachelor's Degree 2008 
4.2.2Heights of plants at 60 days after sowingThe results obtained on plant heights after 60 days in different plots as per 7 treatments are presented on appendix 3 while the mean heights are presented on the following figure: Erreur ! Source du renvoi introuvable. Figure : Heights of plants after 60 days in the study zone From the figure 11, it is observed that the mean heights vary from 20cm to 31.5cm with the general mean of 25.8cm.T_{3} shows the highest value while T2, T_{5}, and T_{6} Are almost on the same level.T_{1} and T_{4} show the lower values while the lowest value is observed on T0. The ANOVA test below shows if the difference observed between treatments is significant or not. Table : ANOVA test for plant heights at 60days
C.V%=5.89 The ANOVA, test above showed the significant difference between treatments at 1% threshold because the value of Ratio is greater than the value of F table at the mentioned threshold. The difference observed between blocks is not significant as the F ratio is lower than the value of F .table at the same threshold. Table : Mean separation of plant heights after 60 days of sowing
The mean separation table above indicates that the treatments are classified into 3 groups (A, B, C).The group A is for treatment T_{3} (20t of FYM\ha) with the best result. The group B is for T_{2} (15t of FYM\ha), T_{5} (2.5t of lime/ha) and T_{6} (3t of lime /ha). The group C is composed by T_{0} (control), T_{1} (10t of FYM/ha) and T_{4} (2t of lime/ha). The highest result s from T_{3} is due to the supply of plant nutrients by manure, especially Nitrogen, which is a limiting factor for plant growth. For other groups, it is observed that ,as the dose increases, the height of plant also increases (the increase in dose for each amendment results in increase for plant heights) and this shows the effectiveness of both organic and mineral amendments in creating the favorable conditions for plant growth (Laura,1998). 4.2.3 Plant heights at 90 days after sowingThe results obtained on plant heights after 90 days in different plots as per 7 treatments are presented on appendix 4 while the mean heights are presented on the figure below: Erreur ! Source du renvoi introuvable. Figure : Heights of plants after 90 days in the study zone It was observed that the mean heights vary from 41.8cm to 50.2 cm with the general mean of 45.2cm. T_{3} and T_{2} show the highest values while T_{1}, T_{5}, and T_{6} Are almost on the same level with the middle values, followed by T0 and T4 with the lowest values. The ANOVA test below show whether the difference observed between treatments is significant. Table : ANOVA test for plant heights at 90 days
C.V %=3.95 From the table above, the ANOVA test shows that there is a significant difference between treatments at 1% threshold as the value of F Ratio is greater than the value of F table at 1% threshold. The difference observed between blocks is not significant as the F ratio is lower than the value of F .table at the same threshold. Table 26: Mean separation of plant heights after 90 days of sowing
The mean separation table above classifies the treatments into 4 homogeneous groups(A,B,BC,C).The group A represents T_{2} and T_{3} with the best results (15t/ha and 20t/ha of FYM). The group B is for T_{5} and T_{6}, which have received respectively 2.5t/ha and 2t/ha of lime. The third group (BC) is for T_{1} (with 10/ha of FYM) and the last group is for T_{4} and T_{0}, which have received respectively 2t /ha of lime and control. The best results from group A depends on the supply of plant nutrient from FYM, especially nitrogen, which is the limiting factor for plant growth. For group B, BC, and C, the treatments seem to have almost the same performance. 
