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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Shoot growth, tuber yield and quality of two potato cultivars as affected by prohexadione-calcium application

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Author(s):
Luan Santos de Oliveira [1] ; Adalton Mazetti Fernandes [2] ; Rogério Peres Soratto ; Daniela Han [4] ; Rudieli Machado da Silva [5]
Total Authors: 5
Affiliation:
[1] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas - Brasil
[2] Universidade Estadual Paulista. Centro de Raízes e Amidos Tropicais - Brasil
[4] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas - Brasil
[5] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Rev. Ceres; v. 68, n. 5, p. 411-419, 2021-11-08.
Abstract

ABSTRACT This study evaluated the effects of the rates and timings of prohexadione-calcium (prohexadione-Ca) application on shoot growth, tuber yield, and quality of two potato cultivars (Agata and Mondial). An experiment with each cultivar was carried out in a greenhouse using a randomized block design with four replications. Treatments consisted of a control and single or sequential foliar applications of prohexadione-Ca at the rate of 50 or 100 g ha-1 (50 g ha-1 applied once, 50 g ha-1 applied twice, 50 g ha-1 applied three times, 100 g ha-1 applied once, 100 g ha-1 applied twice, and 100 g ha-1 applied three times). Prohexadione-Ca application changed the distribution pattern of tuber size in both cultivars. A rate of 100 g ha-1 prohexadione-Ca was applied three times between the stages of tuber initiation and tuber bulking, making the haulm length of the plants short for a long time. Prohexadione-Ca application did not alter the tuber yield and quality of the cultivar Agata, but 50 g ha-1 applied three times or 100 g ha-1 applied twice increased tuber yield in the cultivar Mondial. Only in the cultivar Mondial, 50 g ha-1 prohexadione-Ca applied three times increase tuber dry matter, starch, and protein contents. (AU)

FAPESP's process: 17/06505-8 - Response of potato crop to application of nitrogen and plant growth regulator
Grantee:Adalton Mazetti Fernandes
Support Opportunities: Regular Research Grants