Soils and the production of cassava in the Llanos Orientales of Colombia
Groesbeek : sociaal-economische verkenning van een ruilverkavelingsgebied ten zuidoosten van Nijmegen
Aanvullend historisch-geografisch onderzoek ruilverkaveling Zundert
Opbouw van bedrijfsconstanten ten behoeve van de relatie landbouw/landinrichting
Nitrogen and phosphorus requirements for the growth and nodulation of Cajanus cajan in Panamanian soils
Chemical analysis and missing element trials with Sorghum vulgare L. showed that three Panamanian soils, representative of three great soil groups, were deficient in both nitrogen (N) and phosphorus (P). When a greenhouse trial was undertaken to test the response of Cajanus cajan to rhizobial inoculation, N and P fertilization in these soils, no response was obtained in either the Río Hato or Los Santos soils. There was a definite response to P and a slight response to inoculation in the Pacora soil, which had the poorest fertility level. N applications depressed nodulation.
The mechanisms of recognition between legume roots and rhizobia: Some implications for biological nitrogen fixation in the tropics
This paper reviews the experimental basis for the lectin-recognition hypothesis and considers ways in which the host/Rhizobium interaction might be manipulated to enhance the benefits of symbiotic nitrogen fixation in the tropics.
Energy cost of biological nitrogen fixation
Biological nitrogen (N2) fixation in both free-living and symbiotic organisms is an energy-requiring process dependent upon a supply of carbon and energy. In this paper the energy costs for N2 fixation and nodule respiration in symbiotic systems are compared with those of free-living N2-fixing systems, with the theoretical energy requierement for N2 fixation, and with the cost of utilization of combined N.
De bodemgesteldheid van het ruilverkavelingsgebied Sauwerd
Rapport over de bodemgesteldheid van het toekomstige ruilverkavelingsgebied Sauwerd. Toegevoegd is een geschiktheidsbeoordeling voor moderne weidebouw zowel bij de huidige toestand als bij een verbeterde ontwatering