Growth and Nutritional Efficiency of Watermelon Plants Grown under Macronutrient Deficiencies

Santos, Valéria Regina Cavalcante dos; Prado, Renato de Mello; Vasconcelos, Ricardo de Lima; Almeida, Hilário Júnior de; Silva, Thais Ramos da

doi:10.21273/hortsci13807-18

Cited by 12 publications

(9 citation statements)

References 19 publications

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“…Nutritional deficiencies can limit plants growth by causing imbalances and reducing the nutrient use efficiency, which in turn decreases biomass production [ 6 , 9 ]. In this study, we demonstrated that the effects caused by the lack of a nutrient ends up hampering the growth of scarlet eggplants, due to modifications in the absorption and use of the lacking nutrient, as well as other nutrients.…”

Section: Discussionmentioning

confidence: 99%

“…The biological functions performed by nutrients in plants induce interactions between multiple nutrients [ 9 ], and due to this reason, the nutritional deficiency of N compromises the metabolism of other nutrients, even if those are not lacking in the nutrient solution. The low use efficiency of S as a result of N shortage is due to the participation of both nutrients in the protein synthesis, seen that both are constituents of essential amino acids [ 18 ].…”

Section: Discussionmentioning

confidence: 99%

“…The symptoms and severity of nutritional deficiency in plants may vary due to several biological functions and interactions that occur between nutrients and the environment [ 9 ], thus reflecting in its growth. For instance, a plant that is deficient in K inhibits the biological functions of this nutrient in the plant, such as the activity of multiple enzymes, some of which are involved in the proteins synthesis [ 8 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Nutritional deficiency in scarlet eggplant limits its growth by modifying the absorption and use efficiency of macronutrients

et al. 2021

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The intensity damages caused by nutritional deficiency in growing plants can vary with nutrients. The effects caused by nutrient omission in the plant nutritional efficiency in relation to the absorption and use of the missing nutrient, and the reasons why these damages reflect in other nutrients have not yet been reported in the culture of scarlet eggplant. A better understanding of the nutritional mechanisms involved may clarify why certain nutrients cause greater limitations than other during plants growth. Thus, this study was designed with the aim of evaluating the damages caused by macronutrients deficiency in the culture of scarlet eggplant in the accumulation of these nutrients, nutritional deficiency, plants growth and in visual symptoms. The experiment was carried out in a controlled environment where plants were cultivated in a hydroponic system. Treatments consisted of supplying a complete Hoagland and Arnon solution (CS), and other nutrient solutions with individual omissions of nitrogen (-N), phosphorus (-P), potassium (-K), calcium (-Ca), magnesium (-Mg) and sulphur (-S). When a nutrient deficiency arose, nutritional analyses, growth and visual symptoms were analyzed. The omissions of N, S and K in the nutrient solution resulted in lower accumulation of all macronutrients in both the above and below ground biomass. Individual omissions resulted in nutritional imbalances with reflexes in the absorption efficiencies and use of the missing nutrient, as well as of other nutrients, revealing that the metabolism involves multiple nutritional interactions. Losses of nutritional efficiencies of macronutrients caused detrimental effects on plants growth, with reduced height, stem diameter, number of leaves, leaf area, and biomass production in above ground and below ground. From the losses in production in above ground biomass, the order of macronutrients limitation was N, S, K, Ca, Mg, and P, with reductions of 99, 96, 94, 76, 51 and 46%, respectively, in comparison to plants cultivated in CS. The most limiting nutrients were N, S, and K, seen that its deficiencies affected the metabolism of all other nutrients. This study demonstrates the importance of an adequate nutritional management of N, S, and K in the cultivation of scarlet eggplant.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nutritional deficiency in scarlet eggplant limits its growth by modifying the absorption and use efficiency of macronutrients

et al. 2021

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“…Due to nutritional waste, the various biological functions and interactions that occur between nutrients and the environment have been modified, causing disturbances in the physiological mechanisms of plants [4]. The concentration of N in the leaf directly interfered with the pigments as it is a structural nutrient of the chlorophyll molecule [10].…”

Section: Plos Onementioning

confidence: 99%

“…So, studying the deficiency symptoms and the nutritional status of the snap bean plants is crucial [3], especially in relation to macronutrients, which, at adequate concentrations, improve the visual, nutritional, and flavor quality of the pods. The identification of nutrient deficiency symptoms and associated it to a punctual nutrient deficit is complex due to the various biological functions and interactions that occur between nutrients and the environment [4]. Therefore, each plant species, when exposed to nutritional stress, exhibits different physiological mechanisms and nutrient absorption rate, which influence plant growth and development.…”

Section: Introductionmentioning

confidence: 99%

Macronutrient deficiency in snap bean considering physiological, nutritional, and growth aspects

et al. 2020

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Nutritional deficiencies limit the growth of snap bean plants, therefore knowing the biological mechanisms involved in it is fundamental. This study is aimed to evaluate the damage caused by a deficiency of macronutrients in physiological variables that cause decreased growth and the appearance of visual symptoms in snap bean. Thus, we design a hydroponic system of snap bean cultivation in order to test the effect of macronutrient deficiencies in a controlled environment. The treatments consisted in evaluate the effects of lack of one macronutrient in time. To perform this, we used Hoagland and Arnon solution in its complete formulation (control) or without N, P; K; Mg, Ca or S in each treatment. Physiological, nutritional, and growth analyses were performed when visual deficiency symptoms of each omitted nutrient appeared. Thus, the omissions of N and P in the nutrient solution led to lower accumulations of all macronutrients in the shoot. And the K, Ca, Mg, and S omissions decreased the amounts of K, Ca, Mg, P, and S in the shoot of the snap bean plants when compared with the plants grown in the complete nutrient solution. With the lowest accumulation of macronutrients, the content of photosynthetic pigments and the photosynthetic rate were reduced, with harmful effects on plant growth. Thus, from the losses in dry matter production of the shoot, the order of limiting of macronutrients in bean plants was N < P < Ca < S < Mg < K, with a decrease of up to 86.2%, 80.1%, 51.2%, 46.5%, 25.6%, and 19.3%, respectively. The nitrogen deficiency is more evident, proven by symptoms such as chlorosis in the lower and upper third leaves and necrosis of the lower third leaves.

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Introduction to Plant Nutrition

Prado

de²

2021

Mineral Nutrition of Tropical Plants

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Growth and Nutritional Efficiency of Watermelon Plants Grown under Macronutrient Deficiencies

Cited by 12 publications

References 19 publications

Nutritional deficiency in scarlet eggplant limits its growth by modifying the absorption and use efficiency of macronutrients

Nutritional deficiency in scarlet eggplant limits its growth by modifying the absorption and use efficiency of macronutrients

Macronutrient deficiency in snap bean considering physiological, nutritional, and growth aspects

Introduction to Plant Nutrition

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