Articles
INFLUENCE OF PREPLANT FERTILIZER ON STRAWBERRY YIELDS AND NUTRIENT LEACHING FROM A PEAT SUBSTRATE
Article number
401_51
Pages
419 – 426
Language
Abstract
In four successive trials strawberry waiting-bed plants were grown on bags filled up with a peat mixture.
Half of the bags received no preplant fertilizer and the other half were filled with a peat mixture to wich a preplant fertilizer was added at the rate of 1 kg per m3. The fertilizer contained 12% N, 14% P2O5, 24% K2O and microelements.
The total yields and growth responses of the two treatments did not differ significantly in any of the four succesive trials.
In general an excess feed of 36% was supplied.
High losses of most nutrient elements were observed in the percolate during the first eight weeks after planting.
About 90% of the SO4, 45% of the N and K and 36% of the P applied as preplant fertilizer were leached.
This represented an excess leaching of 14.2 kg N, 6.15 kg P, 24.65 kg K and 63.6 kg SO4 per ha in comparison with bags to which no preplant fertilizer had been added.
Half of the bags received no preplant fertilizer and the other half were filled with a peat mixture to wich a preplant fertilizer was added at the rate of 1 kg per m3. The fertilizer contained 12% N, 14% P2O5, 24% K2O and microelements.
The total yields and growth responses of the two treatments did not differ significantly in any of the four succesive trials.
In general an excess feed of 36% was supplied.
High losses of most nutrient elements were observed in the percolate during the first eight weeks after planting.
About 90% of the SO4, 45% of the N and K and 36% of the P applied as preplant fertilizer were leached.
This represented an excess leaching of 14.2 kg N, 6.15 kg P, 24.65 kg K and 63.6 kg SO4 per ha in comparison with bags to which no preplant fertilizer had been added.
The drainage water from preplant fertilized bags was considered less suitable for recirculating due to the higher content of SO4.
Authors
F. Lieten
Keywords
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