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Plant and Soil
Krikun, J., Agricultural Research Organization, Gilat Regional Experiment Station, Israel
Haas, J.H., Institute of Plant Protection, Israel
Dodd, J.
Kinsbursky, R., Institute of Soils and Water, ARO, The Volcani Center, Bet-Dagan, Israel
The effect of methyl bromide and P fertilization on the growth of four agricultural crops in a P-sorbing soil was studied. Harvestable yields and P tissue content were significantly lower for celery (Apium graveolens L.), onion (Allium cepa L.) and pepper (Capsicum annuum L.) following fumigation. P fertilization up to 330 kg P ha -1 as superphosphate could not reverse this effect. The highest P fertilizer treatment had 25.4 μg g -1 bicarbonate-extractable P and 0.26 μg g -1 water extractable P. This P level produced acceptable commercial yields when vesicular arbuscular mycorrhizae (VAM) were present (non-fumigated) and indicate the importance of the VAM association for these crops. In contrast, melon (Cucumis melo L.) growth was slightly greater following soil fumigation at all P fertilization rates. These findings indicate that crop VAM dependence and efficacy of VAM biotypes must be considered as essential components for P fertilization recommendations on fumigated P-sorbing soils. © 1990 Kluwer Academic Publishers.
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Mycorrhizal dependence of four crops in a P-sorbing soil
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Krikun, J., Agricultural Research Organization, Gilat Regional Experiment Station, Israel
Haas, J.H., Institute of Plant Protection, Israel
Dodd, J.
Kinsbursky, R., Institute of Soils and Water, ARO, The Volcani Center, Bet-Dagan, Israel
Mycorrhizal dependence of four crops in a P-sorbing soil
The effect of methyl bromide and P fertilization on the growth of four agricultural crops in a P-sorbing soil was studied. Harvestable yields and P tissue content were significantly lower for celery (Apium graveolens L.), onion (Allium cepa L.) and pepper (Capsicum annuum L.) following fumigation. P fertilization up to 330 kg P ha -1 as superphosphate could not reverse this effect. The highest P fertilizer treatment had 25.4 μg g -1 bicarbonate-extractable P and 0.26 μg g -1 water extractable P. This P level produced acceptable commercial yields when vesicular arbuscular mycorrhizae (VAM) were present (non-fumigated) and indicate the importance of the VAM association for these crops. In contrast, melon (Cucumis melo L.) growth was slightly greater following soil fumigation at all P fertilization rates. These findings indicate that crop VAM dependence and efficacy of VAM biotypes must be considered as essential components for P fertilization recommendations on fumigated P-sorbing soils. © 1990 Kluwer Academic Publishers.
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