Articles

• A Comparative Study of The Economic Performance of Farmers Under Large Scale and Motorized Pump Irrigation Systems in Katsina State of Nigeria

  T Alimi

  DOI: 10.4314/dai.v19i4.15804
• Tillage and Farmyard Manure Effects on Crusting and Compacting Soils at Katumani, Semi-arid Kenya

  EK Biamah, G Sterk, L Stroosnijder

  DOI: 10.4314/dai.v19i4.15805
• Effect of Cultural Conditions on the Commercial Production of Polygalacturonase by Rhizoctonia bataticola

  AC Amadioha, M Okpara

  DOI: 10.4314/dai.v19i4.15806
• Estimation of Thermal Conductivity in the North-western Niger Delta Sedimentary Basin, Nigeria, Using Geophysical Well Logs

  ED Uko, PO Ekanem, AG Warmate, CL Eze, IO Akpabio

  DOI: 10.4314/dai.v19i4.15807
• Determination of Total Petroleum Hydrocarbons (TPH) and Heavy Metals in Tilapia (Hemichromis spp.) and Mackerel (Scomber japonicus) in Lagos Markets

  AA Adeniyi, CF Oyem

  DOI: 10.4314/dai.v19i4.15808
• Chemical and Defoliation Effects on Fruitset of \"Cox orange\" and \"Elstar\" Apple Cultivars

  G Ouma, A Kunz, M Blanke

  DOI: 10.4314/dai.v19i4.15809
• Investigation to Determine Whether Delayed Toxicity Can be used to Predict Genotoxicity in vitro

  AO Asita, MG Clare, SK Obuya, MR Budda, CK Atterwill

  DOI: 10.4314/dai.v19i4.15810