Tomato response to potassium fertirrigation and black polyethylene cover
The aim of this work was to determine the effects of fertirrigation with potassium and black polyethylene cover on tomato. A field experiment was carried out on a cambic yellowish podzolic at the Universidade Federal de Viçosa, in Viçosa, MG, Brazil. The treatments, with five replicates, following a randomized block design, were: (A) manual application of 40% of recommended K rate at the seedling transplantation row and manual sidedress application of 60%; (B) manual application of 40% of recommended K rate at the seedling transplantation row and 60% by fertirrigation; (C) similar procedure to B but with black polyethylene cover; (D) application of 100% of K rate by fertirrigation and (E) similar procedure to D but with black polyethylene cover. Treatments B, C, D and E were drip irrigated. Tomato yields were higher with K application by fertirrigation than using the manual fertilization method, but the tomato yields were not influenced by K partial or total fertirrigation neither by black polyethylene cover. The NO3--N, organic-N, K, Ca and Mg concentrations on leave petioles were not influenced by treatments.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
Pesquisa Agropecuaria Brasileira
1999
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| Online Access: | https://seer.sct.embrapa.br/index.php/pab/article/view/5141 |
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| Summary: | The aim of this work was to determine the effects of fertirrigation with potassium and black polyethylene cover on tomato. A field experiment was carried out on a cambic yellowish podzolic at the Universidade Federal de Viçosa, in Viçosa, MG, Brazil. The treatments, with five replicates, following a randomized block design, were: (A) manual application of 40% of recommended K rate at the seedling transplantation row and manual sidedress application of 60%; (B) manual application of 40% of recommended K rate at the seedling transplantation row and 60% by fertirrigation; (C) similar procedure to B but with black polyethylene cover; (D) application of 100% of K rate by fertirrigation and (E) similar procedure to D but with black polyethylene cover. Treatments B, C, D and E were drip irrigated. Tomato yields were higher with K application by fertirrigation than using the manual fertilization method, but the tomato yields were not influenced by K partial or total fertirrigation neither by black polyethylene cover. The NO3--N, organic-N, K, Ca and Mg concentrations on leave petioles were not influenced by treatments. |
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