Articles

Browse our published research articles

401 articles
271
Research Article DOI: 10.67042/njss.2013.58plr77o

Soybean Nodulation and N2 - Fixation as Influenced by Cow Dung, Wood Ash and Rhizobial Inoculation in Tropical Acid Soils (typic Dystrudept )

Soretire A. A*, Olayinka A.

The effects of cow dung and wood ash applications with and without rhizobial inoculation on modulation, and N2-fixation by soybean (Glycine max (L.) Merrill) were investigated in tropical acid dystrudepts under greenhouse and field conditions. The field experiments were located at Epe and Ijebu-waterside (Ibiade) of Lagos and Ogun States, southwestern Nigeria, respectively. The experiment was a 3 ...

Aug, 2013 pp. 114-125 532 views 679 downloads
272
Research Article DOI: 10.67042/njss.2012.ae10qpa3

Suitability of Extractants for the Determination of Available Sulphur for Groundnut Production in Some Soils of Benue State, Nigeria

B.C. Anjembe*, Adetunji M. T

Occurrence of sulphur deficiency in Nigerian soils is becoming frequent and more extensive due to intensive cultivation and shift from low analysis to high analysis fertilizers which do not contain sulphur. Information is still required on the parameters of evaluating sulphur status and requirement of crops in the country. Studies were conducted in the laboratory, greenhouse and farmers’ fields in...

Apr, 2012 pp. 114-121 511 views 707 downloads
273
Research Article DOI: 10.67042/njss.2018.3h5pkcr1

Effects of Rice Mill Wastes on Soil Properties in a Rice - Producing State of South - Eastern Nigeria

Ifejimalu, A. C*

A research was conducted in 2015 and 2016 in Abakaliki, Ebonyi State, South-eastern Nigeria, to determine the effects of heavy dumping of rice mill wastes on soil properties. Samples were collected from soils in Abakaliki rice mill industry. Auger and core samples were collected from Faculty of Agriculture and Natural Resources Management, FARM (control) and at Abakaliki rice milling industry in h...

Aug, 2018 pp. 115-122 565 views 730 downloads
274
Research Article DOI: 10.67042/njss.2013.i4ncth8w

Determination of Optimum Nitrogen Fertilizer Rates for Aloe Vera Growth, Yield and Nutrient Composition

Owoade F. M.*, Adeoye G. O, Ewetola E. A

Aloe vera (L) Burm. f. is an important medicinal plant with little information on agronomic requirements for its enhanced growth and nutrient composition. Two years field trial was conducted during the 2010 and 2011 planting seasons at the experimental field of the Teaching and Research Farm, Ladoke Akintola University of Technology Ogbomoso, Oyo State. The field trials comprised six levels of nit...

Apr, 2013 pp. 115-119 532 views 1,062 downloads
275
Research Article DOI: 10.67042/njss.2015.9xu4pr53

Effects of Variation in N:k Ratio in Soils on the Growth, Nutrient Availability and Yield of Maize (zea Mays L. )

A. O. BAKARE*, I.O. Osemwota

This study was undertaken in two distinct ecological zones of Edo state of Nigeria to determine the effects of variation in the N: K ratio in soils on the availability of N, K and on the growth and yield of maize. The two sites used were Rubber Research Institute of Nigeria (RRIN) Iyanomo (forest) and the Teaching and Research Farm of Ambrose Alli University, Emaudo, Ekpoma (derived savanna). RRIN...

Apr, 2015 pp. 116-124 481 views 657 downloads
276
Research Article DOI: 10.67042/njss.2022.85yuw72l

Evaluation of Farmyard Manure and Urea on Growth, Yield and Cost Benefits of Rice (zea Mays L) (oryza Sativa L) in Southern Guinea Savanna, Nigeria

Olowoake A.A.*, Afe, A.I., Ojo, J.A, Yusuf, T. M., Subair, S.K.

Chemical fertilizers are become more and more expensive, making them unaffordable for smallholder farmers in Nigeria. This study compared the combined effects of farmyard manure and inorganic fertilizers (prilled and granular urea) on growth, yield and cost benefits of rice. Field experiments were carried out in two locations (Malete and Shao) Kwara State, Nigeria during 2018 and 2019 cropping sea...

Aug, 2022 pp. 117-124 549 views 642 downloads
277
Research Article DOI: 10.67042/njss.2022.b80m82yw

Application of Semivariogram Model to Quantify Spatial Variability of Soil Properties in a Forested Tropical Soil.

Obidike-Ugwu E. O.*, Ogunwole J. O., Odunze Azubuike Chidowe, Nwafor O. E., Ariwaodo J. O.

Accurate evaluation of spatial variability of soil properties is one of the key components of ecosystem management. The conventional analytical and semivariogram methods were used to analyze data to quantify the potential of the semi-variogram model for measuring soil properties and their spatial variability in a tropical forest ecosystem. A total of 100 soil samples were collected through a 300 m...

Apr, 2022 pp. 117-123 593 views 459 downloads
278
Research Article DOI: 10.67042/njss.2020.e6v1qv5a

Influence of Tillage - Seedbed and Manure - Npk - Micronutrient Management Options on Selected Soil Properties of Sandy - Loam Ultisols Evaluated Using Sweet Potato

Sunday Ewele OBALUM*, , Ogumba P.O., Uzoh I .N

This study assessed the effects of tillage and nutrient management practices on selected soil properties of degraded coarse-textured Ultisols and responses of sweet potato in Nsukka, southeastern Nigeria. It involved three tillage-seedbed types viz zero-tilled flatbed (ZT-FB), conventionally tilled-flatbed (CT-FB) and conventionally tilled tie-ridge (CT-TR), each with seven soil fertilizer amendme...

Dec, 2020 pp. 117-125 521 views 651 downloads
279
Research Article DOI: 10.67042/njss.2014.505ohe2x

Soil Fertility Assessment of a Shea (vitellariaparadoxa C.f. Gaertn ) Field at Bida, Niger State

OSAYANDE P.E.*, P.O. Oviasogie, AWANLEMHEN B.E., Orhue E. R.

Knowledge of the fertility status of soils is basic to managing them for optimum crop production. Fertility status of a cultivated Shea (Vitellaria paradoxa C.F. Gaertn) field was assessed at Bida, Niger state. Soil samples were collected using auger and core methods, air-dried, sieved with a 2- mm sieve and analyzed for physical and chemical properties in the laboratory using standard methods. Th...

Apr, 2014 pp. 117-124 488 views 747 downloads
280
Research Article DOI: 10.67042/njss.2021.8mlk36gn

Dynamics in Physico–chemical Properties of Soils Under Oil Palm Plantations of Different Ages

Olufemi Adewale Osinuga*

This research investigated the changes in the physicochemical properties of soils under oil palm plantations of different ages. Soil surface (0-20 cm) and subsurface (20-40 cm) samples have been obtained from various ages of oil palm plantations (0-5, 5-10, 10-15 and, 15-20 years). Two distinct samples were taken on the same farm, under alleys and heaped pruned fronds. Soil samples used as a stand...

Aug, 2021 pp. 118-124 531 views 744 downloads