scholarly journals Effect of Cl- and Na+ ratios in nutrient solutions on tomato (Solanum lycopersicum L.) yield in a hydroponic system

2022 ◽  
Vol 28 (1) ◽  
Author(s):  
Saúl Parra-Terraza ◽  
◽  
Azareel Angulo-Castro ◽  
Pedro Sánchez-Peña ◽  
José Benigno Valdéz-Torres ◽  
...  

Intensive tomato (Solanum lycopersicum L.) production in coastal areas of Sinaloa is exposed to significant amounts of Cl and Na deposited by sea breezes and irrigation water, which affects the yield of this vegetable. The aim of this study was to evaluate three percentage ratios of Cl-/anions (25/100, 50/100 and 75/100) and three percentage ratios of Na+/cations (25/100, 50/100 and 75/100) in the nutrient solution on mineral composition, dry matter production and yield of tomato. The experimental design was completely randomized with a 32 factorial arrangement and four replications. Analysis of variance and mean comparisons were performed (Tukey, P ≤ 0.05). Cl and Na concentrations in tomato leaves, stems and fruits increased significantly with increasing ratios of Cl-/anions and Na+/cations in the nutrient solution. The 75/100 Cl-/anions ratio reduced (P ≤ 0.05) the Ca concentration in leaves, while the 75/100 Na+/cations ratio decreased (P ≤ 0.05) K concentrations in leaves and stems. Both ratios reduced aerial dry biomass (48 and 25.8 %, respectively) and tomato yield (50.8 and 45.7 %, respectively). The results indicate that tomato plants grown with the 75/100 percentage ratio of Cl-/anions or the 75/100 percentage ratio of Na+/ cations absorb excessive amounts of Cl or Na, which causes ionic imbalance (especially of K+ and Ca2+) and affects dry matter production and yield.

Author(s):  
Alide M. W. Cova ◽  
Fabio T. O. de Freitas ◽  
Paula C. Viana ◽  
Maria R. S. Rafael ◽  
André D. de Azevedo Neto ◽  
...  

ABSTRACT The objective of this study was to evaluate the growth and accumulation of ions in lettuce grown in different hydroponic systems and recirculation frequencies. The experimental design was randomized blocks with 8 treatments and 4 replicates. The evaluated hydroponic systems were Nutrient Flow Technique (NFT) and an adapted Deep Flow Technique (DFT), the latter with recirculation frequencies of 0.25, 2 and 4 h. Both systems used fresh water and brackish water. Plant growth, accumulation of inorganic solutes (Na+, K+, Cl- and NO3-) and the correlation between dry matter production and Na+/K+ and Cl-/NO3- were evaluated. The salinity of the water used to prepare the nutrient solution caused decrease in growth and K+ and NO3- levels, and increased contents of Na+ and Cl- in the plants. When using fresh water the highest dry matter production was obtained in the NFT system. In case of brackish water the adapted DFT system increased the production, in relation to NFT system (at same recirculation frequency: 0.25 h). It was found that the choice of the type of hydroponic system and recirculation interval for the cultivation of lettuce depends on the quality of the water used to prepare the nutrient solution.


2010 ◽  
Vol 28 (2) ◽  
pp. 293-299 ◽  
Author(s):  
S. Bianco ◽  
L.B. Carvalho ◽  
M.S. Bianco

A greenhouse trial was carried out from November 1995 to April 1996 at FCAV/UNESP, Brazil, aiming to study the dry matter production and the accumulation and distribution of macronutrients in Solanum americanum, an important weed for annual and perennial crops in Brazil. The plants were grown in seven liter pots with sand substrate, irrigated daily with Hoagland & Arnon nutrient solution. The experimental design was completely randomized with four replicates. The treatments corresponded to evaluation times at 14 day intervals, beginning 21 days after emergence (DAE). In each evaluation, the plants of four pots were analyzed for dry matter production and macronutrient content. S. americanum had a small dry matter and macronutrient accumulation at the beginning of the experimental stage, increasing after 77 DAE and reaching the maximum theoretical value at 142, 142, 164, 149, 140, 149 and 152 DAE, for dry matter, N, P, K, Ca, Mg, and S, respectively. K and N were the most accumulated macronutrients for S. americanum plants.


1991 ◽  
Vol 31 (5) ◽  
pp. 687 ◽  
Author(s):  
EH Ruhl

The effect of different potassium (K) supply levels (1 and 10 mmol/L) on cation uptake and distribution was investigated in a nutrient solution trial using Vitis champinii var. Ramsey and Freedom and V. berlandieri x V. rupestris var. 1103 Paulsen and 140 Ruggeri grafted with Djandjal Kara. While dry matter production was not affected by K supply or rootstock, greater K supply increased K contents in the various plant parts by 25-32%. Vines grafted on Freedom had the highest K content in the scion parts, and those grafted on 1103 Paulsen had the lowest. Potassium and magnesium (Mg) accumulation, expressed as the relative contribution to total cations, clearly distinguished between V. champinii (Ramsey and Freedom) and V. berlandieri x V. rupestris (1103 Paulsen and 140 Ruggeri), with higher K and lower Mg accumulation in vines grafted on V. champinii rootstocks. Results indicate that K accumulation in the scion parts of grafted vines is affected by the genotype of the rootstock.


2018 ◽  
Vol 09 (11) ◽  
pp. 1479-1486
Author(s):  
Allan Nunes Alves ◽  
Felipe Guedes de Souza ◽  
Lúcia Helena Garófalo Chaves ◽  
Ana Carolina Feitosa de Vasconcelos

2020 ◽  
Vol 10 (7) ◽  
pp. 708
Author(s):  
Loubna Azariz ◽  
Mohamed Fekhaoui ◽  
Souad Elblidi ◽  
Ahmed Yahyaoui

the increasing number of cases of soil contamination by trace elements have affected crop production, and represents a risk threatening the quality of our food products. Some of these contaminants, such as trivalent chromium Cr (NO<sub>3</sub>)<sub>3,</sub> which is similar to micronutrients, can, therefore, be absorbed by plants and whose phytotoxicity has long been considered negligible, and largely underestimated. The purpose of this work was to study the transfer of trivalent chromium from nutrient solution to green beans <em>Phaseolus vulgaris L</em> grown on bioponics; the contamination responses were determined in terms of growth parameters, yield, and dry matter production; at various concentrations (5, 10 and 20 ppm). Chromium trivalent effects have also been studied in tissues plant. Results showed that the absorption of trivalent chromium from the nutrient solution and its translocation to the aerial tissues plants had no adverse effects on growth parameters, and also on beans yield. Results also showed that chromium accumulates in roots rather than in the other tissues, and did not reduce the dry matter production, in terms of translocation and bioconcentration. The transfer factor is low and green beans cannot be defined as a hyperaccumulator of chromium.


2019 ◽  
Vol 88 (3) ◽  
pp. 380-386 ◽  
Author(s):  
Yuya Mochizuki ◽  
Tiejun Zhao ◽  
Wataru Kanematsu ◽  
Takashi Kawasaki ◽  
Takeshi Saito ◽  
...  

1969 ◽  
Vol 42 (1) ◽  
pp. 27-34
Author(s):  
E. Hernández-Medina ◽  
M. A. Lugo-López

The possibilities of ameliorating manganese-induced chlorosis with boron applications were studied under greenhouse conditions using soybean and corn as indicator plants. Five levels of boron with six manganese concentrations were used in the soybean experiment. Boron and manganese were used at five levels each in the corn experiment. Observations were made as to the development of toxicity symptoms. Boron, manganese, and iron were determined in the top leaves of the corn plants. Measurements of dry-matter production were made for both crops. Five parts per million of manganese was toxic to soybean plants and reduced yields, but toxicity was lessened by increasing the boron in the nutrient solution up to 0.5 p.p.m. Boron was toxic also at levels above 0.5 p.p.m. No definite manganese-toxicity symptoms developed in the corn plants. In general, high boron (2, 5 p.p.m.) reduced corn yields regardless of the manganese level. Chemical analyses of the corn leaves suggests the possibility that manganese accumulation may be modified to some extent by boron concentrations.


2005 ◽  
Vol 33 (1) ◽  
pp. 377-380
Author(s):  
Erzsébet Nádasy ◽  
Gábor Wágner

2013 ◽  
Vol 38 (10) ◽  
pp. 1884-1890 ◽  
Author(s):  
Ren-He ZHANG ◽  
Dong-Wei GUO ◽  
Xing-Hua ZHANG ◽  
Hai-Dong LU ◽  
Jian-Chao LIU ◽  
...  

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