Open Access Original Research Article

Agronomic Adaptability of Some Selected Nerica Rice Varieties in Response to Biofertilizer Application in Northern Cameroon

Gandebe Maurice, Ngakou Albert, Ndjouenkeu Robert

Journal of Experimental Agriculture International, Page 1-12
DOI: 10.9734/JEAI/2017/31878

A field study was conducted in agro-ecological zone I (Yagoua) and II (Wakwa) in Cameroon during the 2008 and 2009 cropping seasons. The objective of this research was to evaluate the responses of four selected Nerica rice varieties to biofertilizer application on their growth and yield performances in the field. The experimental setup was a split-plot (4x5)x3, in which the type of fertilization was the main factor or treatments, each of which was replicated thrice, while the rice varieties (FKR56-N, FKR58-N FKR60-N, FKR62-N, DIR-95) were considered as the secondary factor or sub-treatment. Treatments were: T0, which received none of the fertilizers; TE, which was applied with only the chemical fertilizer NPK (14-24-14); TEM, which was applied with chemical fertilizer (NPK) and biofertilizer (mycorrhizae); TM, which was applied with only biofertilizer. Biofertilizer was revealed as effective as the chemical fertilizer on rice growth and yield, but at different ranges varying with rice varieties. Rice varieties FKR60-N and FKR62-N significantly expressed the highest degree of root colonization by biofertilizer at the range of respectively 62.96-77.23% at Yagoua and 59.29-69.05% at Wakwa compared to other varieties, and for the first and the second cropping seasons. Rice plants that were applied with each of the fertilizers showed an important height (103.88-112.80 cm) when compared to the control (96.04-104.06 cm). The number of tillers was significantly increased 1.5-2 folds by biofertilizer application at Yagoua and Wakwa during both cropping seasons. Nerica varieties FKR58-N, FKR60-N, as well as the local variety DIR-95 recorded higher seed yield, respectively (1.73-3.32; 2.27-4.42; 2.22-4.54) t/ha in studied agro-ecological zones. On the overall, there were significant varietal changes on growth parameters and grain yield/ha. Results revealed the contribution of this biofertilizer in sustaining the intensification of safe and environmentally friendly rice production in northern Cameroon.

Open Access Original Research Article

Modelling the Dual Potential of Cowpea in the Lawra-Yagtuuri in the Upper West Region

Puoviel Yengbaar Evans, Jakperik Dioggban, Adjabui Michael ` Jackson

Journal of Experimental Agriculture International, Page 1-8
DOI: 10.9734/JEAI/2017/31025

Aims: This research was conducted in pot of trials at the farm land of Lawra-Yagtuuri in the Upper West Region to determine the effect of Rhizobia inoculants, Boostxtra, and appropriate Phosphorus Fertilizer level required for cowpea growth and yield.

Study Design:  The research design used in this study was experimental. Specifically, the experiment was run as a split-plot design.

Place and Duration of Study: Department of Statistics and Department of Mathematics, University for Development Studies, between November, 2015 and July, 2016.

Methodology:   The experiment assessed the effects of rhizobia inoculants at two levels (2.5 g and 5.0 g) per kg, boostxtra and four levels of phosphorus fertilizer (0 kg P2O5 ha-1, 25 kg P2O5 ha-1, 50 kg P2O5 ha-1and 75 kg P2O5 ha-1) on the growth and yield of cowpea. It was run in a split-plot design. The analysis was done using Generalized Linear Model and Subset Regression.

Results: Phosphorus Fertilizer and Boostxtra significantly enhanced cowpea growth and yield; Pod weight plant (g), Nodule dry weight (g), Pod and Nodule numbers in all the weeks of measurement were significantly improved. However, the highest yield was observed at 50 kg P2O5 ha-1. Cowpea response to rhizobia inoculation was not sufficient to raise cowpea yield. The model was significant (P<0.05) accounting for 77.70% of total variation in the yield. The subset regression analysis had C(p)=5.28 from six variables in the model with the Adjusted R Square = 0.9318.

Conclusion: The ability to optimize cowpea grain yield depends on the application of 50 kg P2O5/ha and Boostxtra and care should be taken to apply the right amount of Phosphorus Fertilizer.

Open Access Original Research Article

Combining Ability, Heterosis and Inbreeding Effects in Faba Bean (Vicia faba L.)

M. M. F. Abdalla, M. M. Shafik, Sabah M. Attia, Hend A. Ghannam

Journal of Experimental Agriculture International, Page 1-13
DOI: 10.9734/JEAI/2017/31964

The present investigation was carried out under insect free cage during 2011/12, 2012/13 and open field in 2013/14 growing seasons. A diallel-cross including reciprocals among six parents of faba bean (Giza 843, Nubaria 1, Cairo 25, Cairo 5, Cairo 33 and Misr 3) was utilized to study the heterotic and inbreeding effects, as well as general and specific combining ability. Results showed significant differences between parents, F1's and F2's for all studied traits and these differences may be mainly due to the genetic diversity of the parents. The parents and their crosses would be interesting and prospective for improving seed yield and its components in faba bean. Based on the two estimates of heterotic effects (over mid and better parent), 6, 10,14, 28, 27, 25 and 8 crosses exhibited significantly positive heterotic effects for days to flowering, plant height, number of branches/plant, number of pods/plant, number of seeds/plant, seed yield/plant and 100-seed weight, respectively. The parental genotype Misr3 was a good combiner for days to flowering, number of pods/plant, number of seeds/plant and seed yield/plant. On the other hand, the parental genotype Cairo 25 was a good combiner for days to flowering, plant height, number of pods/plant, number of seeds/plant and seed yield/plant over F1 and F2 generations. Parent Nubaria 1 was good combiner for 100-seed. The cross (Cairo 5 x Misr 3) had significant or highly significant positive SCA effects for number of pods/plant, number of seeds/ plant, seed yield/plant and 100-seed weight. Reciprocal-cross differences occurred frequently in the F1. Inbreeding gain was found in some F2 materials and selection may be practiced to secure transgressive segregates with higher yield and heaver seed index.

Open Access Original Research Article

Effect of Replacement of Conventional Concentrate in a Rice Straw Diet by Moringa Foliage on Lamb Production Performances

N. Sultana, M. R. H. Rakib, S. M. J. Hossain, S. Ahmed, M. Ershaduzamman, M. A. I. Talukder

Journal of Experimental Agriculture International, Page 1-14
DOI: 10.9734/JEAI/2017/31329

Aims: The aim of this study was to examine the effect of replacement of conventional concentrate mixture with Moringa oleifera on growth performance and carcass characteristics in growing lamb.

Study Design: The design of the experiment was a completely randomized design (CRD) with five treatments and each treatment consisted of six lambs of 3 to 6 months old.

Place and Duration of Study: This study was conducted at the Sheep Farm of Bangladesh Livestock Research Institute (BLRI), Savar, Dhaka, Bangladesh, between July 2015 and June 2016.

Methodology: Thirty growing lambs aged about 4.5 months (9.73 ± 1.52 kg) were randomly allotted to five treatments with varying moringa (M) and concentrates (C): 100M, 75M:25C, 50M:50C and 75C:25M and 100C. Rice straw was provided at 30 percent of the total ration.

Results: Average daily gain (ADG) and Feed conversion ratio (FCR) were not significantly (P>0.05) different among treatments. Similarly, no significant differences were observed in slaughter weight, warm carcass weights and dressing percentage. The percentages of lean, and lean:fat ratio were significantly higher (P<0.01) for 100M  and 75M:25C diet than 50M:50C, 25M:75C and 100M diets. Conversely, carcass fat percentage of warm carcass was significantly (P<0.001) increased with increasing level of concentrate in the diet.

Conclusion: It is recommended that replacing moringa foliage at 75 and100% with conventional concentrate could be used as a cheap protein supplement in rice straw based diets for lamb production.

Open Access Original Research Article

Serum Biochemical Parameters of Laying Japanese Quails (Coturnix coturnix japonica) Fed Diets Containing Fermented Taro Cocoyam (Colocasia esculenta var. esculenta) Meal

F. B. Abang, A. A. Ayuk, B. I. Okon

Journal of Experimental Agriculture International, Page 1-6
DOI: 10.9734/JEAI/2017/15281

The study was conducted to examine the size of the damage in tissue, especially the liver by fermented taro cocoyam meal on laying Japanese quails. Two hundred and twenty five Japanese quails (Coturnix coturnix japonica) were randomly allotted to five dietary treatments (I–V) of 36 hens and 9 cockerels each. Each treatment was replicated thrice with 12 hens and 3 cockerels per replicate. In each of the five diets, 48 hours fermented taro cocoyam meal (Colocasia esculenta var. esculenta) was used to replace maize at 0%, 25%, 50%, 75%, and 100% respectively. Serum Na +, K+, Cl- , HCO3-, Creatinine, ALT, AST and Total bilirubin were determined on the 70th day. The results of serum biochemistry showed that, Cl-, HCO3-, Creatinine, ALT and AST were within normal range. However, it was observed that serum K+ increased above the upper limit whereas serum   Na+ was slightly below the lower limit in all the treatments. Total bilirubin was above normal range beyond 25% replacement of maize in the diets. It was concluded that, beyond 25% inclusion levels of cocoyam in quails’ diets, nutrients supplied were insufficient for basic maintenance and metabolic functions for laying quails.