Abstract:
Varied levels of N and K2O were ap plied as weekly liquid applications to containergrown chives plants in several soil mixtures in a greenhouse experiment to determine a desirable range of these nutrients for the production of chives leaf tissue. The results expressed on the basis of plant bed area indicate that 14 to 28 pounds per acre per week of each N and K2O is a desirable range of fertilization. Much higher levels, above 56 pounds, resulted in yield reduc tion and excess fertilizer salts accumulation in the soil. Soil and tissue analyses of field samples together with data from the experimental con tainers indicate that 1500-2500 ppm salts in the soil solution by the saturated paste technique (5) is a desirable range for chives production. Yield was benefited by amendment of virgin Myakka fine sand with 25% by volume peat. Residues from methyl bromide fumigation appeared toxic to chives in terms of fresh weight yield. Addition of simulated residues as methyl alcohol and potas sium bromide resulted in the inference that the methyl radical residue from methyl bromide was much more toxic than the bromide residue. Per sistent undissociated methyl bromide is not ex cluded since it would obviously be a toxin.
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