Open Access Short Research Article

Influence of Technique Cultivation on Some Properties of Two Varieties of Yam (Dioscorea spp) Flour

Kouadio Claver Degbeu, Adou Marc, Kouadio Kouadio Olivier

Asian Journal of Advances in Agricultural Research, Page 1-5
DOI: 10.9734/ajaar/2019/v10i430038

All most of roots, tubers and seeds studied have been carried out under environmental control or glass. These methods had an advantage to minimize environmental effects on crop due to unequal distribution of the nutriment in the soil. This, have been often observed through the variability of size and form of the tubers harvested generally in farm condition. In order to evaluate the variations occurred on the nutritional (Ash, while protein and fat) and functional (clarity and swelling-solubility) values, yams cultivated in nursery gardener sachet have being compared to those of famer condition. This study has been conducted 2013-2014. Yam grown in nursery gardener sachet has the highest (p < 0.05) ash content (4.58 ± 2.18%) than this of field (1.53 ± 0.35%). Flour clarity is also affected by technical cultivation. This property is more improved by the cultivation in nursery gardener (p < 0.05). The cultivation in nursery gardener improved ash content and clarity of the suspension of yam flour.

Open Access Original Research Article

The Use of Biostimulants in High-density Olive Growing: Quality and Production

Gilberto Hernández-Hernandez, Domingo M. Salazar, Juan Martínez-Tomé, Isabel López-Cortés

Asian Journal of Advances in Agricultural Research, Page 1-11
DOI: 10.9734/ajaar/2019/v10i430034

Due to the increase of high-density holdings, especially of olive trees, the nutritional requirements of the plants are higher per unit area, which implies that a greater contribution of fertilizers to the soil is needed. Opting for fertilizers of inorganic origin will produce an increase in the pollution of the soil.

In the face of this possible soil contamination, our aim is to analyze the effect of biostimulants as an alternative to chemical fertilizers, to steadily produce and maintain high quality standards during the life of the crop. Our objective is using more environmentally friendly products in order to satisfy one of the most important demands from both consumers and the authorities.

In this study, we carried out five different treatments in addition to a control treatment with a supply of NPK, from inorganic products, which are used to control fertilization with a solution obtained from seaweed extracts. These treatments were applied in two crop cycles for two of the most important varieties in the current olive tree growing scenario: Arbequina and Koroneiki.

This study was developed in the farm Pozohondo, which is located in a crop zone by the Palancia river (Castellón, Valencia, Spain), in the southeast of the Iberian Peninsula, where the olive trees were established in a high-density system with a planting framework of 4 x 1.5 m. We ensured an exhaustive control of the nutritional needs of the holding by using a fertigation system.

We could notice differences in the productions of each applied treatment, avoiding any possible biases through the additional control of 100 randomly selected olives from each of the samples. There is an improvement in the set of physical characteristics of the olives with the treatment that provides amino acids and extra potassium based on amni acids. We analyzed the quality of the olive oil obtained from the production of each treatment by measuring the fatty acids, tocopherols and polyphenols contents. We also carried out an organoleptic tasting analysis following the rules of the International Olive Committee (IOC).

We observed an improvement with regard to the rest of treatments in the pomological parameters of the olives when applying the potassium and amino acid biostimulant, while the quality of the oils was not affected by the type of fertilization applied in each treatment.

Open Access Original Research Article

Condition Factor, Food and Feeding Habit of Chrysichthys nigrodigitatus (Siluriformes: Bagridae) from Lower River Benue, Makurdi, Nigeria

Edem, Edem Thomas, Odey, Christopher Ogamode

Asian Journal of Advances in Agricultural Research, Page 1-7
DOI: 10.9734/ajaar/2019/v10i430035

Background and Objective: The feeding habit as well as the condition factor of Chrysichthys nigrodigitatus from lower river Benue was studied between July 2015 and September 2015.

Materials and Methods: The natural food of the fish in the Lower River Benue was studied from stomach contents of the fish. A total of 100 stomachs were randomly examined and analyzed using two methods; the frequency of occurrence and point methods. About 92 had food items while 8 were empty. Analysis of variance (ANOVA) was used to test for significant difference at 95% confidence limit in the food eaten by these species and also the degree of stomach fullness.

Results: Food items encountered using frequency of occurrence method include fish parts (47.62%), seeds (40.49%), sand/mud (30.09%), detritus (30.95%), digested food (29.76%), insect parts (27.38%), mollusk (25.00%) and algae (22.62%).

Conclusion: C. nigrodigitatus had a euryphagous food habits and based on condition factor the fish were in good health.

Open Access Original Research Article

Evaluation of Infiltration Characteristics of Soils Developed on Coastal Plain Sands in Calabar Municipality Local Government Area, Cross River State, Nigeria

O. Oyedele, E. A. Akpa, J. F. Akpan

Asian Journal of Advances in Agricultural Research, Page 1-8
DOI: 10.9734/ajaar/2019/v10i430036

Infiltration of water into the soil is an important physical process affecting the fate of water under field conditions, especially the amount of subsurface recharge and surface runoff and hence the hazard of soil erosion. The study was conducted to evaluate the infiltration models of soils developed on coastal plain sands and to select a suitable models as a basis to improve the management of the soil. A total of 16 infiltration runs were made with the double ring infiltrometer. For the purpose of getting best fitting model, the results obtained from various infiltration models were compared with observed field data. The parameters considered for best fitting of model were correlation coefficient and coefficient of variability (CV). Model-predicted cumulative infiltration consistently deviated from field-measured data, that is, the models under-predicted cumulative infiltration by several orders of magnitude for Kostiakov, Green Ampt and Philip model but the model over predicted cumulative infiltration for Horton model. The results of the soil samples analysed revealed that the mean values of 707.50, 208.13 and 84.38 gkg-1 for sand, silt and clay with the textural class of sandy loam. The bulk density, particle density and total porosity had mean values of 1.84 gcm-3, 2.44 gcm-3 and 22.56%. However, there was a fairly good agreement between mean-measured cumulative infiltration (7.30 cm/hr, CV = 32.19%); Philips (1.93 cm/hr, CV = 42.49%); Kostiakov (0.13 cm/hr, CV = 30.77%); Horton (64.49 cm/hr, CV = 22.39%) and Green Ampt model (42.04 cm/hr, CV = 0.57%) respectively. The data however showed that the correlation coefficient for Kostiakov (1.00) was best fitting in predicting the field measured data and this was closely followed by Green Ampt (0.88); while Philip’s model and Horton model showed a negative correlation (r = -0.88 and r = -0.82) with the field measured data. Conservation measures involving mulching, cover cropping and afforestation are recommended to improve the soil structure and infiltration capacity.

Open Access Original Research Article

Rice Production and Poverty Reduction in Agatu Local Government Area of Benue State, Nigeria

Ogah, Odey Moses, Eyah, Jennifer Ongbele, Iorlamen, Torkwase Rhoda

Asian Journal of Advances in Agricultural Research, Page 1-8
DOI: 10.9734/ajaar/2019/v10i430037

The study was carried out to analyzed rice production and poverty reduction in Agatu local government area of Benue state, Nigeria. To this end, a multi-stage sampling technique was used. The first stage involved the purposive selection of five wards noted for high production of rice. Secondly, a simple random sampling was used to select twenty five respondents each from the five wards to sum up to one hundred and twenty five respondents used for the study. The analytical tools employed included simple descriptive statistics like mean, frequency distribution, percentages and tables and inferential statistics like logit regression model. The data used were from primary source and this was collected by administering of structured questionnaires to illicit information from the farmers. The results of the analysis revealed farmers to be in their active age, mostly married, males’ dominance, highly experienced and educated with large families. Annual income from rice production was significant in reducing poverty in the study area pseudo R2 value of 0.886. The overall Chi-Square value was significant at 1% level of probability, also log likelihood value of 135.27. The study recommends the need for credit to be extended to poor farmers to help stimulate their investment in order to increase their income.  Farmers are also encouraged to engage in non-farm activities to raise their level of income.