Effects of nitrogen, phosphorus, potassium and calcium nutrition on strawberry anthracnose

Nam, Myeong Hyeon; Jeong, S. K.; Lee, Y. S.; Choi, Jong Myung; Kim, H. G.

doi:10.1111/j.1365-3059.2006.01322.x

Cited by 58 publications

(37 citation statements)

References 14 publications

(19 reference statements)

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“…These results agree with those observed by Pereira et al (2012), who applied increasing doses of N and K and did not observe significant effect of the fertilizers on the variable mean fruit mass of blackberry plants. In strawberry, Nam et al (2006) showed a positive relation between N and K in the increment of dry matter; however, these authors warn about the unbalanced use, which can pose risk of diseases like anthracnose. These authors recommend low contents of these elements in the plant.…”

Section: Resultsmentioning

confidence: 97%

Growth and yield of strawberry plants fertilized with nitrogen and phosphorus

Medeiros

Pereira

Rodrigues

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C T Strawberry (Fragaria x ananassa)is a crop that has rapid growth and is highly influenced by fertilization. Due to its development speed, the plant needs to absorb sufficient macronutrients in order to meet its demand. The objective of this research was to evaluate growth and yield of strawberry under different doses of nitrogen (N), phosphorus (P) and potassium (K) fertilization. The treatments, using Box's central composite design, were distributed in randomized blocks with four replicates and consisted of five N doses (0.16, 0.37, 0.88, 1.4 and 1.6 g plant ) and absence of K. Seedlings of the cultivar 'Oso Grande' were cultivated in 10-L pots. The analysed variables were: plant height, fresh fruit mass, number of leaves, number of fruits, total soluble solids and titratable acidity. The fertilization with N and P increased the values for most of the studied variables. At the highest doses of N and P, K stimulated plant yield.Crescimento e produção de morangueiro adubado com nitrogênio e fósforo R E S U M O O morangueiro (Fragaria x ananassa) é uma cultura que apresenta rápido crescimento, além de ser bastante influenciada pela adubação motivo pelo qual é notória a necessidade de absorção suficiente de macronutrientes a fim de atender às demandas da planta. Propôs, neste experimento, avaliar o crescimento e a produção do morangueiro em função da adubação com nitrogênio e fósforo na ausência e na presença de potássio. Os tratamentos em que foi utilizada a Matriz Composto Central de Box foram arranjados em blocos ao acaso com quatro repetições. Foram avaliadas cinco doses de nitrogênio (0,16; 0,37; 0,88; 1,4 e 1,6 g planta ) e na ausência de potássio. As mudas utilizadas foram do cultivar Oso Grande cultivadas em vasos de 10 L; as variáveis analisadas foram: altura das plantas; massa da matéria fresca dos frutos, número de folhas, número de frutos; sólidos solúveis totais e acidez titulável. A adubação com nitrogênio e fósforo aumentou os valores na maioria das variáveis estudadas enquanto nas maiores doses de nitrogênio e fósforo o potássio estimulou o rendimento das plantas.

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Section: Resultsmentioning

confidence: 97%

Growth and yield of strawberry plants fertilized with nitrogen and phosphorus

Medeiros

Pereira

Rodrigues

et al. 2015

Rev. bras. eng. agríc. ambient.

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“…Excess of potassium, 30 mmol L -1 , also influenced increase of anthracnose (Colletotrichum gloeosporioides) in strawberries (Nam et al, 2006). Potassium applied appropriately in soil, 8%…”

Section: Discussionmentioning

confidence: 99%

“…This behavior is not a rule, however, as some studies report increased disease with increasing concentration of K, such as in the cases of Cercospora coffeicola in coffee and Colletotrichum gloeosporioides in strawberry, due to an imbalance of K and Ca (Garcia Júnior et al, 2003;Pozza et al, 2001;Nam et al, 2006). Potassium participates in regulating various physiological pathways, such as enzyme activation, protein synthesis, photosynthesis, osmoregulation, transport, and stress resistance (Marschner, 2012).…”

Section: Introductionmentioning

confidence: 99%

Interaction between potassium (K) and calcium (Ca) on the severity of Yellow Sigatoka in banana plants

Freitas¹,

Pozza²,

Pozza³

et al. 2017

Afr. J. Agric. Res.

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The main control measure of Yellow Sigatoka (Pseudocercospora musae) in banana plants (Musa spp.) has been the planting of resistant varieties, and fungicide application. However, the use of adequately nourished plants is also emphasized as a complementary control method. This study evaluated the influence of interaction between potassium (K) and calcium (Ca) in nutrient solution on the severity of Yellow Sigatoka in banana. Evaluation included severity of disease, chlorophyll a and b contents, nutrient contents, and total dry weight (TDW). There was no interaction between concentrations of K and Ca for area under the disease severity progress curve (AUDSPC), although the AUDSPC increased in leaves 1 and 2 with increasing concentrations of K from 1 to 6 mmol L -1 . Increasing K led to a reduction in chlorophyll a and b contents, and in nutrients N, P, Mg, B, Cu, Zn, and Mn. TDW increased with increasing K. Therefore, high concentration of K causes nutritional imbalance in banana plants, and favors the severity of Yellow Sigatoka.

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“…However, the effects of K on disease incidence could be affected by the amount and source of this element, plant and pathogen species and trial type (Wang et al 2013). For example, Nam et al (2006) found that strawberries that were grown with excess K were very susceptible to infection by Colletotrichum gloeosporioides, but host resistance was greatly enhanced when no K was supplied. This result was observed because the dose proximal to optimal plant K status induced the synthesis of molecules including reactive oxygen species (ROS) and phytohormones such as auxin, ethylene and jasmonic acid (Wang et al 2013).…”

Section: Introductionmentioning

confidence: 99%