Deep root uptake of leachable nitrogen in two soil types is reduced by high availability of soil nitrogen in fodder radish grown as catch crop

Interaction of different irrigation strategies and soil textures on the nitrogen uptake of field grown potatoes

Nitrogen (N) uptake (kg ha-1) of field-grown potatoes was measured in 4.32 m2 lysimeters that were filled with coarse sand, loamy sand, and sandy loam and subjected to full (FI), deficit (DI), and partial root-zone drying (PRD) irrigation strategies. PRD and DI as water-saving irrigation treatments received 65% of FI after tuber bulking and lasted for six weeks until final harvest. Results show...

Yield and nitrogen uptake of soybeans and safflower plants grown on alkaline soil as affected by iron chelate, CCC and nitrogen

Soil and Plant Nitrogen Availability

Soil Carbon and Nitrogen Fractions and Crop Yields Affected by Residue Placement and Crop Types

Soil labile C and N fractions can change rapidly in response to management practices compared to non-labile fractions. High variability in soil properties in the field, however, results in nonresponse to management practices on these parameters. We evaluated the effects of residue placement (surface application [or simulated no-tillage] and incorporation into the soil [or simulated conventional...

Crop Specific Application Rates of Nitrogen for Soil-Grown Crops in Greenhouses to Protect the Groundwater

In a desk study, nitrogen (N) fertilizer application rates were studied and Nconcentrations at one meter depth or at the drain were estimated for Chrysanthemum grown in twelve greenhouse cropping systems, differing in soil type, supplemental lighting and transmissivity. Two N-saving strategies were also studied of which one estimated the N-concentration in the irrigation water to comply with th...