Journal of Plant Nutrition

doi: 10.1080/01904167.2018.1554679pmid: N/A

Abstract We, the Editors and Publisher of the Journal of Plant Nutrition have retracted the following article: Integration of phosphorus with organic manures and plant residues on growth and production of hybrid rice, Tariq Shah, Tayyaba Andleeb & Mirza Hasanuzzaman Journal of Plant Nutrition (2019) DOI: 10.1080/01904167.2018.1554679 Since publication, significant concerns have been raised about the integrity of the published data and overlap with the article listed below: Growth and Productivity Response of Hybrid Rice to Application of Animal Manures, Plant Residues and Phosphorus. Amanullah, Shams-ul-Tamraiz Khan, Asif Iqbal and Shah Fahad Front. Plant Sci. (2016) 7:1440. https://dx.doi.org/10.3389/fpls.2016.01440 When approached for an explanation, the authors did not provide their original data or any necessary supporting information for the observed overlap. As verifying the validity of published work is core to the integrity of the scholarly record, we are therefore retracting the article. The authors listed in this publication have been informed and Professor Hasanuzzaman and Dr. Andleeb have cooperated with the investigation and agree with this retraction. We have received no response to our questions from Dr. Shah. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’.

Katar, Duran; Katar, Nimet; Can, Mustafa

doi: 10.1080/01904167.2021.2020829pmid: N/A

Abstract The effect of various amounts of nitrogen fertilizer (0, 50, 100, 150, 200 and 250 kg ha−1) on yield and quality traits of Anatolian sage (Salvia fruticosa Mill.) were investigated under Turkey’s Eskişehir ecological conditions in 2016–2018. Except essential oil content, all parameters examined in this study increased significantly with nitrogen applications. While dry leaf yield increased significantly with up to nitrogen fertilization 150 kg ha−1, essential oil yield increased up to 100 kg ha−1. On the other hand, the essential oil content decreased significantly with nitrogen applications. The main components of the essential oil were identified as 1,8-cineole (synonym: eucalyptol) followed by camphor. While the highest 1,8-cineole content (48.39%) was determined under 100 kg ha−1 nitrogen fertilizer condition, the lowest camphor content (6.88%) was determined under non-nitrogen fertilizer condition. Considering all the nitrogen applications of field trials, it can be said that while 150 kg ha−1 nitrogen fertilizer is more suitable for dry leaf yield, 100 kg ha−1 nitrogen fertilizer is more suitable for yield and compositions of essential oil.

Galindo, Fernando Shintate; Brito, Vanessa Biazotto; Teixeira Filho, Marcelo Carvalho Minhoto

doi: 10.1080/01904167.2021.2014880pmid: N/A

Abstract The interactive effect of Azospirillum brasilense inoculation and nitrogen (N) rates on Ora-pro-nobis (Pereskia aculeata Mill.) is poorly understood. Ora-pro-nobis (OPN) could be an important horticultural plant to promote a diverse and healthy diet to combat macronutrients and micronutrients deficiencies, particularly in developing countries. The objectives of this research were to assess the effect of inoculation with A. brasilense combined with N rates on OPN development, yield and leaf nutrients content under greenhouse conditions. Treatments were tested in a randomized completely block design with four replicates, arranged in a full factorial design 2 × 5 and included: i) two inoculations (with and without A. brasilense) and iii) five N application rates (0, 50, 100, 150 and 200 kg ha−1 applied in two split application as ammonium sulfate source). Inoculation with A. brasilense benefited OPN growth and development, leading to a greater leaf biomass, even combined or not with N application rates. In addition, A. brasilense inoculation increased OPN nutrition with increased leaf N, P, K, Ca, Mg, S, Fe and Zn concentrations. Azospirillum brasilense combined with 150 kg N ha−1 increased leaf biomass by 40% in sampling 1, and in sampling 2, A. brasilense inoculation increased leaf biomass by 8.8% regardless N application rates. Therefore, A. brasilense inoculation could be an important practice to increase OPN cultivation, development, nutrition and yield. Ora-pro-nobis showed high nutrient content in leaf tissue, therefore, OPN plant can be an interesting source of nutrients to human consumption. Nitrogen application rates benefited OPN growth and development leading to a greater leaf biomass. In addition, N application rates increased OPN nutrition with increased leaf N, P, Ca, Mg, S, Cu, Mn and Zn concentrations. However, increasing N rates decreased leaf K concentration. Therefore, long-term studies are required to better understand the role of A. brasilense under different N management and their effects on OPN development and nutritional properties, aiming to reduce N application rates and improve N management in OPN cultivation.

Paparozzi, Ellen T.; Li, Zhengxiong; Blankenship, Erin E.; Conley, M. Elizabeth

doi: 10.1080/01904167.2021.2014885pmid: N/A

Abstract All living organisms need essential nutrient elements to survive and thrive. For plants, of the 14 essential nutrient elements, over half show deficiency symptoms that include chlorosis. However, this is for plants with green leaves. For purple leaf basil, there has been no reported research on how microelement deficiency is expressed, diagnosed and/or corrected. The purpose of this research was to visually and quantitatively identify micronutrient element deficiencies, specifically, iron (Fe), manganese (Mn) and zinc (Zn), in ‘Red Rubin’, a purple leaf basil. To do this, three cultivars of basil, Italian Large Leaf, a green leaf basil; Aromatto, a mottled purple and green leaf basil; and Red Rubin, a purple leaf basil, were grown for 13–16 weeks. The experiment design was a split-plot with four treatments and the three cultivars. Data included visual observations, relative greenness (SPAD) measurements and tissue nutrient analysis. ‘Red Rubin’ leaves had similar SPAD values to both of the other cultivars. When Fe, Mn or Zn was deficient, purple pigment was lost. However, visual deficiencies such as yellowing and an increase in green color either veinally, interveinally or on the leaf margins varied. Based upon overlapping symptoms and based on tissue analysis, it is possible that there exists a 3-way or even 4-way interaction/balance among the minor elements Fe, Mn, Zn and possibly copper (Cu).

Khalili, Prshang; Tajbakhsh, Mehdi

doi: 10.1080/01904167.2021.2020830pmid: N/A

Abstract The present experiment was conducted to investigate the effect of the foliar application of growth stimulators and harvest date on plant growth and quality attributes of safflower at the Agricultural Research station of Urmia (Iran) during the 2015–2016 and 2016–2017 growing seasons.The experiment was carried out in a factorial randomized complete block design with 10 treatments and four replications. The first factor was the foliar application of (i) nano-Fe 2 mg L−1, (ii) humic acid 2.5 mL L−1, (iii) magnetic water at 2 L m−2, (iv) ascorbic acid 30 mg L−1, and (v) control (distilled water), and the second factor was two harvest dates including of 121 and 136 days after sowing. The highest total unsaturated fatty acid content was obtained from the foliar application of nano-Fe. This treatment also resulted in a 12% increase in the total unsaturated fatty acid. The foliar application of humic acid and nano-Fe significantly promoted the growth of the safflowers via improving photosynthetic characteristics, such as chlorophyll index. The highest total N (3.65 ppm), available P (0.362 ppm), and K (1.32 ppm) contents of the seeds were obtained from the second harvest date. As well, the total unsaturated and saturated fatty acid percentage and harvest index were significantly affected by the second harvest date. Percent of chromosome abnormality was also decreased on the second harvest date.

Watanabe, Toshihiro; Okada, Ryosuke; Urayama, Masaru

doi: 10.1080/01904167.2021.2020837pmid: N/A

Abstract The ionome is defined as the mineral element composition of an organism or tissue and is genetically and environmentally influenced. Although nutrient deficiency changes the plant ionome, the differences among different species have not been elucidated fully. In the present study, we examined the ionomic responses to nutrient deficiency in wheat (Triticum aestivum L.), maize (Zea mays L.), sunflower (Helianthus annuus L.), and soybean (Glycine max (L.) Merr.) to understand the differences in response to nutrient deficiency among different plant species. The plants were cultivated in fields with four fertilizer treatments: complete fertilization, without nitrogen, without phosphorus, and without potassium. Each plant species was sampled just before the flowering stage, and mineral concentrations of each organ were analyzed. The species-specific and nonspecific changes in accumulation by the treatment were observed in different elements. Under phosphorus deficiency, sunflower showed a different variation in the ionome profile than the other species, particularly in the increased accumulation of many metal elements. Increased accumulation of many elements was observed in all plant species under potassium deficiency. Under nitrogen deficiency, leaf molybdenum accumulation was increased in non-leguminous plants. An unknown role of molybdenum in the metabolic responses to the nitrogen deficiency was predicted. To carry out further research based on the results of such ionomics studies may reveal the unknown function of essential elements in metabolic responses in plants.

Wang, Jihua; Gu, Yan; Mei, Yu; Xu, Shiqiang; Li, Guoliang; Zhang, Muqing; Yang, Shaohai

doi: 10.1080/01904167.2021.2014883pmid: N/A

Abstract Estimating balanced nutrient requirements of sugarcane (Saccharum L. spp.) in China is crucial to develop the optimum fertilization strategies to increase yields and fertilizer use efficiency. In this study, the datasets involving the main sugarcane growing ecological regions were collected from field experiments from 1995 to 2019. Quantitative evaluation of fertility of tropical soils (QUEFTS) model was preliminarily established to investigate the relationship between sugarcane yield and nutrient uptake accumulation and estimate the nutrient requirements for sugarcane at a target yield. QUEFTS model predicted a linear increase in cane yield before the yield reached approximately 60%–70% of the potential yield. Results showed that the total plants had acquired 1.70 kg N, 0.21 kg P, and 2.52 kg K to produce 1000 kg of cane, and the corresponding internal efficiencies (IEs) for N, P, and K were 587.34, 4739.47, and 396.12 kg/kg. Moreover, the simulated balanced nutrients removal from the cane were 1.02 kg N, 0.15 kg P, and 1.63 kg K per 1000 kg of cane, accounting for approximately 60.00%, 71.12% and 64.58% of the total plants, respectively. Field validation experiments suggested that the QUEFTS model could be used to simulate nutrient requirements to help make fertilizer recommendations for sugarcane. QUEFTS model was considered to be an effective alternative for estimating the optimal balance nutrient requirements for sugarcane crops and potentially be helpful when making future decisions regarding fertilizer recommendations for sugarcane in China.

Negi, Manisha; Sharma, Jagjeet Chand; Shukla, Yog Raj; Chauhan, Anjali; Sharma, Saurabh; Sharma, Kapil

doi: 10.1080/01904167.2021.2020823pmid: N/A

Abstract The present study was carried out on onion cv. Nasik Red in a randomized block design with three replications. The experiment comprised of nine treatments of different nutrient sources including organic manures and inorganic fertilizers. The effects of organic manures (farmyard manure, vermicompost and jeevamrut) alone and in conjugation with inorganic fertilizers on growth, nutrient uptake and yield of onion were studied. Integrated use of inorganic fertilizers and organic manure significantly influenced plant growth, yield and nutrient uptake by crop. The results showed that highest number (7.4) and length of leaves (36.6 cm), bulb size (19 cm2), NPK uptake (122.5, 16.7 and 67.4 kg ha−1, respectively) and biological yield (441.9 q ha−1) was recorded under T2 i.e., RDF + FYM @ 250 q ha−1. Increment in biological yield under T2 was 69.2% over control. Our results could provide a better understanding of the importance of inorganic fertilizers plus organic manure in maintaining soil fertility and thus enhancing nutrient uptake and crop production.

Luo, Tong; Ma, Lin; Wei, Changzhou; Li, Junhua

doi: 10.1080/01904167.2021.2020827pmid: N/A

Abstract Compost tea comes from a wide range of sources and can provide nutrients for crops and improve soil quality. In order to explore the effects of fertilization frequencies of compost tea on the spatial distribution of nutrients and the uptake by cotton, a trial comprised no fertilization treatment (CK) and three fertilizer treatments, that is, the application of a fixed amount of fertilizer at four (F3), two (F5), or one (F9) irrigation cycle, and each irrigation cycle was 10 days. The total amount of nutrients (N, P2O5, K2O) in fertilization treatment were all 18 g, and their amount of fertilization each time was 1/3, 1/5 and 1/9 of the total fertilizer, respectively. The results showed that in 0–10 cm soil layers, high-frequency fertilization (F9) reduced the soil pH by 5.6% compared with F3, the soil nutrient content of F3 treatment at seedling stage was significantly higher than that of the other two treatments by 71.9%–272.3%, however, the 20–40 cm soil layer was hardly affected by fertilization; The nutrient accumulation of cotton in F3 treatment was 17.1%–32.4% higher than that in the other two treatments, and the highest dry matter and recovery efficiency were also obtained under the F3 treatment. In conclusion, increasing the proportion of fertilization in seedling stage (F3) can increase the uptake and utilization of nutrients by cotton; While high-frequency fertilization (F9) can reduce the pH of calcareous soil. This study provides a basis for fertilizer optimization and soil quality improvement of composted tea.

Barlas, Neriman Tuba; Kadyampakeni, Davie M.

doi: 10.1080/01904167.2021.2014879pmid: N/A

Abstract The aim of this study was to investigate the biomass formation and nitrogen (N) uptake trends during vegetative period in Clementine mandarin (Citrus reticulata Blanco). In this study, the organs (branch, leaf, flower, bud and fruit) of shoots <12 and >12 month-old were analyzed for biomass formation and distribution, N concentration and uptake amounts for 2 years. Results showed that biomass accumulation was 9.7 kg/tree at the beginning of production season, 62.8 kg/tree before harvest and 46.9 kg/tree at the end of production season. Nitrogen concentration showed a decreasing trend in leaves and fruits of shoots <12 month-old while a decreasing trend was observed in fruits and an increasing tendency for leaves in shoots >12 month-old. It is concluded that 1377 g N/tree accumulated in the shoots (<12 and >12 month) of the Clementine mandarin trees through one production season (262 days). This amount was provided by both soil and fertilizer N in addition to remobilization. In consideration of total N and organic matter values of the soils in the research groves and the amounts of N-containing fertilizer that were applied, it may be seen that remobilization may have a significant part of the supply of N for different organs in total throughout the production season or based on different periods. These results show that improvement in biomass and N allocation can be achieved in Clementine mandarins through proper tracking of N uptake during different growth stages and in different plant organs.