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The field experiment was conducted in the Federal College of Forestry, Jos Plateau state demonstration farm to determine the effect of single super phosphate (SSP) fertilizer on the growth and yield of Bambara groundnut. A Randomized Complete Block Design (RCBD) was used involving 5 treatments; T 1 (60kg/ha SSP as control), T 2 (100kg/ha SSP), T 3 (80kg/ha SSP), T 4 (40kg/ha SSP) and T 5 (20kg/ha SSP). Each treatment was replicated 3 times. Analysis of variance (ANOVA) was used in analyzing the result and where significance was decalred, Fisher LSD method was used to separate the means. Data was collected on plant height, leaf count, leaf area, branch count and yield. Significant difference was obtained between the treatments for the growth and yield of Bambara groundnut. The result indicates that the highest plant height of 27.05cm and leaf area of 25.28cm 2 were obtained at T3 respectively. The highest leaf count and branch count of 114.85 and 38.24 were observed at T1. T2 has the highest (32.40) flower count. The highest yield of 11.37Kg/m 2 was obtained at T1. Therefore, the result is an indication that T 1 level is adequate for the growth and yield of Bambara groundnut. Therefore, famers can go into Bambara groundnut production as it has low level of fertilizer intake due to its nitrogen fixing ability, drought tolerant, and hasvery low effect from pest and diseases and it serve as a protein supplement.

This research work was carried out at the experimental plot of Federal College of Forestry, Jos, Plateau, State, Nigeria. The experiment was laid out in a randomized complete block design (RCBD) comprising of four treatments; T0 as the Control (Ridges tillage), T1 (Zero-Tillage), T2 (Mound tillage) and T3 (Flat tillage) replicated three times. Data was recorded on leaf area, plant height, leaf cover area, number of stems, number of leaves and yield. The result showed that the treatments had significant effect on plant height T3 (Flat tillage) having the highest (34cm) mean plant height, while T1 (Zero tillage) has the least (26cm) mean plant height. Number of stem T3 (Flat tillage) also having the highest (14.8) number of stem while T1 (Zero tillage) has the least (9.7) number of stem. Number of leaves T3 (Flat tillage) also having the highest (289) number of leaves while T1 (Zero tillage) has the least (215) number of leaves. Leaf area T3 (Flat tillage) also having the highest (645.1cm 2 ) of leaf area while T1 (Zero tillage) has the least (467.1cm 2 ) leaf area. Plant cover area T3 (Flat tillage) having the highest (4503.3cm 2 ) plant cover area while T1 (Zero tillage) has the least (2147.0cm 2 ) plant cover area. For yield, T0 (ridges tillage) having the highest (8.6Kg) yield, followed by T2 (mound tillage), T3 (Flat tillage) and T1 (Zero tillage) which has the lowest (4.7Kg) yield. It can be concluded that ridges as the form of tillage could be the best practice for the growth and yield of Solanum tuberosum on the Jos Plateau.

Aim: To determine the correlation between the growth and yield parameters of cabbage grown with organic manure and inorganic fertilizer. Study Design: The experimental design consist of randomized complete block design with five treatments which were replicated four times. Location and Duration: The experiment was conducted at the experimental field of Federal College of Forestry, Jos, during the 2018/2019 raining season. Methods: Land clearing was done and the land was properly demarcated based on the different treatments and replicates. Cabbage seeds were first planted in a nursery bed and later transplanted onto the experimental plots. Data was taken on the plant height, leaf count, cabbage head diameter and head weight. The data collected were subjected to analysis of variance (ANOVA) using SPSS version 23 and Duncan Multiple Range Test, used to separate the means were significance occurred. Results: The result of the correlation coefficient of growth and yield showed that a strong correlation exist between plant height and cabbage head weight (r = 0.681 and 0.648) at P ≤ 0.01. Plant height was also positively correlated with head weight (r = 0.365, P ≤ 0.05) and head weight was as well and positively correlated with head diameter at (r = 0.501, P ≤ 0.05). Conclusion: Based on the results obtained, it can be concluded that application of organic manure and inorganic fertilizer has positive correlations between the growth and the yield parameters of cabbage.