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Articles by I.I. Ibeawuchi
Total Records ( 4 ) for I.I. Ibeawuchi
  C.C. Opara , E.U. Onweremadu and I.I. Ibeawuchi
  The study was conducted to investigate effects of different application rates of Rabbit (Oryctolagus cuniculus) Waste (RW) on the water stability of peds (natural aggregates) of three soil types-entisol, inceptisol and ultisol collected from Nsukka, Adani and Ihiagwa (Owerri) respectively in Southeastern Nigeria. Aggregate stability was measured at the macro-level by Mean Weight Diameter (MWD) index and micro-level by Aggregated Silt plus Clay (ASC%) index. From each location, samples were randomly collected from four points or spots and bulked for determining aggregate stability indices and other soil properties. Results obtained revealed that with MWD (mm) index and using LSD (0.05) value of 0.04 for comparing mean values among the soils (A), ultisol was statistically greater in stability than the other soil types. The stability order was ultisol (0.49 mm) >inceptisol (0.42 mm) >entisol (0.213 mm). Similarly, with LSD(0.05) value of 0.02 for the RW rates MWD obtained at 100 g/2 kg soil was significantly higher than MWD of other rates. The magnitude of improvement in structural stability following increased application rates of RW was however dependent on the soil types or vice versa as indicated by the statistically significant (p≤0.05) soils (A) X RW rate (B) interaction. Using ASC (%) index and LSD(0.05) value of 1.08 to compare mean values of ASC among the soils (A), the stability of inceptisol was statistically greater than other soil types and was in the order: inceptisol (30.39)> entisol (14.23) > ultisol (5.67). Also, with LSD(0.05) values of 0.38 for comparing the mean values of RW rate, the ASC(%) obtained at 100 g 2 kg-1 soil was statistically higher than as obtained at other lower rates. The magnitude of improvement in aggregate stability was however a function of the soil types or vice versa as revealed by the statistically significant (p≤0.05) soil (A) X RW rate (B) interaction.
  I.I. Ibeawuchi , J.C. Obiefuna and M.C. Ofoh
  The effects of various row spacing on the yield and yield components of okra with groundnut were conducted at the training and research farm of the Federal University of Technology, Owerri. Yield and yield components of the crops in the various row spacing, monetary value of fresh okra fruits and dry groundnut pods were determined. The efficacy of the inter-cropping on weed suppression was evaluated. Okra plant height showed that R30 (30x50 cm) was highly significant than the other treatments in the experiment. Treatment R90 (90x50 cm) and R75 (75x50 cm) had significantly higher number of branches (p=>0.05). The results show that productive nodes increased with increasing row spacing, R90 had 77%, while R75 and R60 had 69 and 66%, respectively. This actually affected crop yield. However, R75, R60 and R90 had the highest fruit yield and were significantly higher than R30 and R45 at p>0.05. Conversely, R30 and R45 suppressed weeds better but had low fruit yield compared to R75, R60 and R9d . The yield of groundnut showed that R60 and R75 had the highest yield although it was not significantly different from R90. Treatment R75 had the highest monetary yield of N 132,200.00 ha-1 than the other treatments compared.
  I.I. Ibeawuchi , C.T. Tom , M.C. Ofoh and C.C. Opara
  Studies on the planting date, harvest stage and pod location on seed protein content and water uptake characteristics of lima bean (sieva type) were conducted at the teaching and research farm of the Federal University of Technology, Owerri, Nigeria. Results indicated that on plant, seed located at the basal and middle region absorbed more water than those at the apical region whereas there were no differences in their seed protein content. However, pod location on peduncle showed that seeds at the nodular and middle regions of the peduncle imbibed more water and had higher seed protein content and were significantly different (P<0.05) from the seeds at the terminal region. Similarly, planting in April and May, produced seeds with better hydrational properties than seeds planted in June and July. The superiority of the early planting is attributed to better light reception, dry matter accumulation and more mature cells. Also, harvesting dry produced seeds with higher water imbibition percentage and seed-protein content than harvesting mature green.
  I.I. Ibeawuchi , J.C. Obiefuna , M.C. Ofoh , G.O. Ihejirika , C.T. Tom , E.U. Onweremadu and C.C. Opara
  An evaluation of four soybean varieties namely TGX 1440-IE, TGX 1485-1D, TGX 1805-17F and Samsoy I, intercropped with Okra NHAE 47-4 was conducted in the ultisol of Owerri south eastern, Nigeria in 2001 and 2002 cropping seasons. Samsoy I, was significantly different (p<0.05) in height, number of branches and economic yield from other soybean varieties studied. Again Samsoy I and TGX 1485-ID were significantly different (p<0.05) from TGX 1440-IE and TGX 1805-17F in terms of total dry matter yield (TDMY) nodule weight (mg/plant) and nodule number, indicating a high potential for N-fixation in the Owerri ultisol. Okra showed no significant effect as it performed uniformly both in height, branching habit and economic yield. The highest economic yield (1.2 t ha-1) and monetary value (N78,500.00 ha-1) was obtained by intercropping Samsoy I+okra. The crop combinations were not effective in suppressing weeds, therefore care has to be taken to keep all plots weed-free.
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