1. Variable grain legume yields, responses to phosphorus and rotational effects on maize across soil fertility gradients on African smallholder farms

   • Shamie Zingore
   • Hebert K. Murwira
   • Ken E. Giller

   Research Article 17 July 2007 Pages: 1 - 18

   

2. Changes in nitrogen budgets and nitrogen use efficiency in the agroecosystems of the Changjiang River basin between 1980 and 2000

   • Chen Liu
   • Masataka Watanabe
   • Qinxue Wang

   Research Article 12 July 2007 Pages: 19 - 37

   

3. Net N immobilisation during the biodegradation of mucilage in soil as affected by repeated mineral and organic fertilisation

   • Christophe Nguyen
   • Fabienne Froux
   • Christophe Robin

   Research Article 12 July 2007 Pages: 39 - 47

   

4. Crop responses to ¹⁵N-labelled organic and inorganic nitrogen sources

   • Ahmed El-Naggar
   • Ahmed El-Araby
   • Henning Høgh-Jensen

   Research Article 27 July 2007 Pages: 49 - 60

   

5. Effects of cropping history and phosphorus source on yield and nitrogen fixation in sole and intercropped cowpea–maize systems

   • Jens M. Vesterager
   • Niels E. Nielsen
   • Henning Høgh-Jensen

   Research Article 05 July 2007 Pages: 61 - 73

   

6. Modeling of nitric oxide emissions from temperate agricultural soils

   • M.-N. Rolland
   • B. Gabrielle
   • P. Cellier

   Research Article 01 August 2007 Pages: 75 - 93

   

7. Groundwater quality in an irrigated, agricultural area of northern Malayer, western Iran

   • Mohsen Jalali
   • Zahra Kolahchi

   Original Research 17 August 2007 Pages: 95 - 105