texture of Florida’s sandy soils, there is also a need for reliable methods to help predict and monitor the dynamics of plant-available N (PAN) released from cover crop residues. AEMs have been used to measure plant available soil NO 3 -N dynamically in
of marketable yield were recorded. After lettuce harvest, crop residue was incorporated into the soil and the beds reshaped, except for the cowpea mulch plots that were maintained as no-till for the lettuce and muskmelon seasons. ‘Magellan
system by providing a mulch layer to retain soil moisture, reduce erosion, suppress weeds, and keep fruits dry. Cover crop residue can reduce water evaporation and water runoff, which reduces irrigation needs and soil erosion ( Lal, 2004 ). Cover crop
suppression is increased by high cover crop residue mulches that are often used along with PRE herbicides in NT systems, full-season control of broadleaf weeds is particularly difficult to achieve in NT pumpkin systems because of limited herbicide options, and
crops in the alley area may allow a large area for biomass production and symbiotic N fixation by legumes. The amount and rate of N mineralized from cover crop residues has been shown to be dependent on the C:N ratio of the residue, as well as
alternative for growers in colder regions ( Black et al., 2002a , 2002b ). AMR uses raised beds and drip irrigation similar to the plasticulture system, but plants are managed like in CMR production and a cover crop residue persists on the raised beds as a
fields in bare, fallow beds, because dealing with cover crop residues delays early planting schedules. To overcome this limitation, Heinrich et al. (p. 502) looked at the ability of a winter-killed cereal rye to reduce nitrate leaching. They found that
cover crop residues can intercept preemergence herbicide, reducing its efficacy. Hand et al. (p. 117) report that applying preemergence herbicides prior to crimping and rolling a cereal rye cover crop can lead to improved weed control. Although there
, conventional, and chisel tillage under simulated rainfall Trans. ASAE 33 1557 1562 CTIC 2004 Conservation tillage trends 1990–2004 National Crop Residue Management Survey. Conservation Technology Information Center West Lafayette, IN Derpsch, R. Roth, C
pumpkins in no-till production systems. No-till pumpkin production may be a solution to reduce soil erosion on land with relatively high slopes commonly available to growers in the Mountain region of North Carolina. The use of cover crop residues for no