Nitrogen, phosphorus, calcium, and magnesium applied individually or as a slow release or controlled release fertilizer increase growth and yield and affect macronutrient and micronutrient concentration and content of field-grown tomato plants

Fertilizer-use efficiency is one of the most critical concerns in rice cultivation to reduce N losses, increase yields, and improve crop management. The effects of a new polymeric-coated controlled-release fertilizer (CRF) were compared to those of other slow-release and traditional fertilizers in a microscale experiment, which was carried out in cuvettes under partly controlled ambient conditions, and a large-scale field experiment. To evaluate the fertilizer’s efficiency, nitrogen and water-use efficiency were calculated using the measurement of different photosynthetic and crop yield parameters. Improved responses regarding some of the analyzed physiological and growth parameters were observed for those plants fertilized with the new CRF. In the microscale experiment, significantly increased yields (ca. 35%) were produced in the plants treated with CRF as compared to traditional fertilizer. These results were in accordance with ca. 24% significant increased levels of N in leaves of CRF-treated plants, besides increased P, Fe, Mn, and cytokinin contents. At the field scale, similar yields were obtained with the slow-release or traditional fertilizers and CRF at a 20% reduced N dose. The new controlled-release fertilizer is a urea-based fertilizer coated with lignosulfonates, which is cheaply produced from the waste of pulp and wood industries, containing humic acids as biostimulants. In conclusion, CRF is recommended to facilitate rice crop management and to reduce contamination, as it can be formulated with lower N doses and because it is ecological manufacturing.

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Effects of old jute seeds on soil fertility and jute production

Journal of Biodiversity Conservation and Bioresource Management ◽

10.3329/jbcbm.v5i2.44912 ◽

2020 ◽

Vol 5 (2) ◽

pp. 33-40 ◽

Cited By ~ 1

Author(s):

M Hasan ◽

N Gani ◽

MD Alam ◽

MTA Chowdhury

Keyword(s):

Soil Fertility ◽

Growth And Yield ◽

Test Plant ◽

Corchorus Olitorius ◽

Chemical Fertilizers ◽

Base Diameter ◽

High Yielding Variety ◽

Fiber Yield ◽

Calcium And Magnesium ◽

Nitrogen Phosphorus

A field experiment was conducted to evaluate the effects of old jute seed powder (≥3 years old) on soil fertility and jute production using the high yielding variety of jute (Corchorus olitorius L.) O-9897 as the test plant. Six treatments of jute seed powder (JSP) and recommended dose of chemical fertilizers (RDF) with three replications were as T1: Control, T2: JSP 5 t/ha + ¼ RDF, T3: JSP 5 t/ha + ½ RDF, T4: JSP 5 t/ha + ¾ RDF, T5: RDF, and T6: JSP 5 t/ha. The growth and yield of jute were found to be the maximum for the treatment T4 (JSP+ ¾ RDF), where the plant height, base diameter, fiber yield and stick weight were increased 147, 85, 177, and 125%, respectively over the control. The highest contents of organic carbon, nitrogen, phosphorus, potassium, sulfur, calcium, and magnesium in soil were also observed for the treatment T4. The sole application of jute seed powder increased the growth and yield of jute as well as the contents of nutrients in soil compared to the control; however, inputs of the jute seed powder in combination with the chemical fertilizers showed better results in improving soil fertility and jute production. J. Biodivers. Conserv. Bioresour. Manag. 2019, 5(2): 33-40

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Influence of Fertilization and Mycorrhizae on the Nutritional Status of Rhododendron (Rhododendron hybridum) in a Nursery

Agriculture ◽

10.3390/agriculture11060538 ◽

2021 ◽

Vol 11 (6) ◽

pp. 538

Author(s):

Zbigniew Jarosz ◽

Zenia Michałojć ◽

Karolina Pitura ◽

Katarzyna Dzida ◽

Michał Koter

Keyword(s):

Nutritional Status ◽

Slow Release ◽

Growing Season ◽

Mineral Fertilizers ◽

Fungal Mycelium ◽

Slow Release Fertilizer ◽

Two Factors ◽

Calcium And Magnesium ◽

The Impact ◽

Nitrogen Phosphorus

Background: This study of the large-flowered azalea cv. ‘Anneke’ investigated the impact of two factors, i.e., methods of fertilization and mycorrhization, on the nutritional status of plants during three years of nursery cultivation. Methods: Single mineral fertilizers, a slow-release fertilizer Hortiform pH (SRF), and fertigation in combination with mycorrhization of plants, were applied. Plant roots were inoculated with fungi from the genera Oidiodendron and Hymenoscyphus sp. The nutritional status of the large-flowered azalea in the first three years of cultivation was assessed based on macroelements. Results: The analyses revealed significantly higher content of nitrogen, phosphorus and calcium in the leaves of plants inoculated with fungal mycelium. A beneficial effect of plant mycorrhization on plant nutritional status, i.e., higher levels of nitrogen, phosphorus, potassium, calcium, and magnesium, was noted in the second and third years of azalea cultivation. Conclusions: Significant amounts of the nutrients were utilized in the middle of the growing season and almost fully utilized after the season. Hence, the necessity to supplement nutrients in each subsequent year of plant vegetation was postulated. Fertigation was shown to require further improvement of the nutrient solution.

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Pineapple growth and yield response to fertilizer and drip irrigation management

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v101i2.15790 ◽

2017 ◽

Vol 101 (2) ◽

pp. 203-223

Author(s):

Melissa Acevedo ◽

Elvin Román-Paoli ◽

Félix M. Román-Pérez ◽

Elide Valencia ◽

Rebecca Tirado-Corbalá

Keyword(s):

Controlled Release ◽

Drip Irrigation ◽

Foliar Application ◽

Irrigation Management ◽

Potassium Sulfate ◽

Growth And Yield ◽

Ananas Comosus ◽

Yield Response ◽

Controlled Release Fertilizer ◽

Fruit Crop

Pineapple [Ananas comosus (L.) Mere] is an important fruit crop cultivated in many tropical countries. This fruit crop requires large amounts of nitrogen (N) and potassium (K) to maximize yield. Although pineapple has low water requirements, extended drought can affect yield. Two experiments were conducted to study the effects of fertilizer application methods and drip irrigation management on pineapple yields. Pineapple cultivars MD-2 and Cabezona were planted at Isabela and Lajas, Puerto Rico, respectively. Fertilizer and irrigation treatments included: i) Controlapplication of 896 kg/ha of a granular fertilizer (12-6-10-3) at two, five and nine months after planting; ii) FS-R- application of 150-150-120-45 kg/ha at planting plus 20 foliar applications of urea and potassium sulfate (50 kg/ha) every three weeks, rainfed; iii) FS-DI- application of 150-150-120-45 kg/ha at planting plus 20 foliar applications of urea and potassium sulfate (50 kg/ha), drip irrigation applied every three weeks; iv) FERT- application of 150-150-120-45 kg/ha at planting, but urea and potassium sulfate (50 kg/ha) were applied throughout fertigation; and v) CRF- same amount of nutrients as FS-R but N was applied as a controlled release fertilizer every six months. At Isabela, treatment FS-R produced the highest fruit weight (2.5 kg per fruit) and 1.5% of N in tissue, but did not differ significantly from FS-DI and CRF. Plants under CRF registered the highest Brix (15.8°). Although foliar fertilizer tended to produce higher yields, controlled release fertilizer is recommended because it eliminates the need for frequent foliar application without compromising yield.

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