The aim of this study was to examine leaf and fruit nutrient concentrations of some strawberry varieties. For this aim, samples were collected from Selva, Osmanlı, Yalova-15, Cavendish, Camarosa, Arnavutkoy, Rapella, Seascape and their crosses. Results showed that nutrient concentrations of leaf and fruit significantly changed with varieties and lines.

Silicate slag was applied to soil of Captiva, Floratam, and Raleigh varieties of St. Augustinegrass to measure the effect of plant silicon on resistance of the varieties to southern chinch bugs, Blissus insularis Barber, and plant disease. In general, silicate slag addition increased Si and Cu content in leaves but tended to decrease P and Mg concentrations. Tissue nutrient contents were generally lowest for Floratam; this trend occurred both with and without silicate slag amendment, indicating a lower nutrient requirement than with other varieties. Chinch bug survival was lowest and development slowest on Captiva which was the only variety with resistance to the insects. There were no significant differences in survival or developmental rates of chinch bugs between silicon treatments within any of the 3 varieties. In disease assessments, Raleigh was more susceptible to gray leaf spot than Captiva or Floratam. However, the addition of Si resulted in significant disease reduction in Raleigh. The addition of Si resulted in disease reduction in Floratam as measured by disease incidence, but not severity. The addition of Si slag caused significant increases in stolon number, stolon length, and leaf blade width in 1 - 2 varieties. Varieties varied in response to Si fertilization among 6 growth characters measured.

The aim of this study was to examine leaf and fruit nutrient concentrations of some strawberry varieties. For this aim, samples were collected from Selva, Osmanlı, Yalova-15, Cavendish, Camarosa, Arnavutkoy, Rapella, Seascape and their crosses. Results showed that nutrient concentrations of leaf and fruit significantly changed with varieties and lines. | Bu araştırmada; bazı çilek çeşitlerinin besin elementi içeriklerini yaprak ve meyve analizleriyle incelemek hedeflenmiştir. Bu amaçla, Selva, Osmanlı, Yalova-15, Cavendish, Camarosa ve Arnavutköy, Rapella, Seascape çeşitleriyle, bunların melezlerinden örnekler alınmıştır. Elde edilen sonuçlar, çilek bitkisinin yaprak ve meyve besin elementi içeriklerinin çeşitlere ve hatlara bağlı olarak önemli düzeyde değiştiğini ortaya koymuştur.

To differentiate the impacts of grains (reproductive tissues) and cob plus husks (vegetative tissues) on biomass accumulation, nitrogen (N), phosphorus (P), and potassium (K) uptake and their distribution within maize plants, six Chinese maize varieties with different yield potentials released in last 60 years were employed in a two-year field experiment. Ears were either covered or removed at silking, the dry weight (DW) and NPK contents at silking and maturity in major sink organs of plants were closely observed. In comparison with control plants, covering ears reduced, and removing ears further decreased total DW and NP gains of whole plants, regardless of the larger root size and reduced shoot:root DW ratio. Since the total DW and NP gains of the new maize varieties after silking were more than that of the old varieties, the decrease of the total DW and NP gains caused by pollination-prevention and removing ears were also more in the new varieties. The uptake and distribution patterns of NP and K in maize plants were different. Developing grains and cob plus husks differentially reduced net post-silking K loss. The results suggested that the amount of nutrient uptake was not decided by the root size itself. Developing maize grains enhanced nutrient uptake rate of roots. The cob plus husks could partially substitute for grains as a strong nutrient sink to stimulate NP uptake by roots and reduce K loss from plants.

A single-location, three-year study (2008-2010) was conducted near Ardmore, OK, to determine the effects of five nitrogen rates (0, 50, 100, 200, and 300 lb N/acre) on crude protein (CP) and total digestible nutrient (TDN) concentrations of seven varieties of bermudagrass and two varieties of old world bluestem. Four seeded and three vegetatively propagated (hybrid) bermudagrass varieties were tested. Both CP and TDN concentrations were affected by N rate, variety, and year. Applying N increased CP and TDN concentrations in all varieties tested. All bermudagrass varieties had higher CP and TDN concentrations than either old world bluestem variety at all N rates tested. Seeded bermudagrass varieties had higher CP and TDN concentrations than hybrid bermudagrass varieties when fertilized with 200 or 300 lb N/acre, but not when fertilized at 0, 50, or 100 lb N/acre.

Taking into account the economic importance of Acer species and their frequent use in landscape architecture, both nationally and internationally, it is necessary to develop an in vitro biotechnology research to propagate some of the most popular and requested Acer varieties. The study presents data on the partial results of in vitro initiation for two varieties of Acer platanoides: 'Globosum' and 'Crimson King'. During the initiation phase, Acer platanoides 'Globosum' showed the best initiation percentage, using the next nutrient composition: MS macroelements, MS microelements, MS vitamins, auxins/cytokines 0,2:1 mg/l, while Acer platanoides 'Crimson King' variety recorded the best results on the nutrient medium with a different composition: MS macroelements, MS microelements, LF vitamins and auxins/ cytokine0,4:1,2 mg/l.

Low quality of cassava stakes for planting is a major cause that limits cassava growth and productivity. Nutrient contents of the stakes are one possible key factor determining the stake quality. Priming refers to a method to improve the performance of plant propagules, such as seed or cutting, by a pretreatment before planting. This study evaluated the effect of soaking assava stakes in nutrient solution on cassava root yield and quality. The effect of cassava stake priming was evaluated in 5 cassava varieties (Rayong 5, Rayong 7, Rayong 9, Rayong 72, and Kasetsart 50 (KU50)) that were grown in the field with and without soaking stake in a complete nutrients solution. Although stake priming had no effect on above ground biomass, it increased root number and root yield of all cassava varieties except KU50. Stake priming increased root yield by up to 25% and starch yield 30% as compared with without priming. In conclusion, cassava stake priming, by soaking in complete nutrient solution, offers a simple, easy and practical means to improve cassava root as well as starch yield.

A two-year field trial was conducted from 2005 to 2007 at Regional Horticultural Research Station, NAU, Navsari to assess the response of guava varieties to the application of organic manures, inorganic fertilizers and biofertilizers. The trial was conducted in a randomized block design with factorial concept and three replications. Results revealed significant differences amongst various growth attributes, fruit yield, leaf nutrient uptake and soil nutrient availability due to varieties, organic manures and biofertilizers. Of the two varieties, Sardar recorded greater plant height, plant spread and nitrogen uptake than Allahabad Safeda. Whereas, Allahabad Safeda registered higher TSS and available N, P₂O₅ and K₂O contents in the soil. Amongst the various organic amendments, application of castor cake resulted in the maximum plant height and available N. The maximum East-West plant spread and the highest potassium uptake was noted under biocompost treatment. The maximum available P₂O₅ and K₂O were also observed with biocompost application. Incorporation of vermicompost resulted in the maximum nitrogen uptake and that of FYM resulted in the maximum phosphorus uptake and organic carbon content in the soil. Addition of biofertilizers recorded higher fruit yield and available P₂O₅ content in the soil.

BACKGROUND: The increasing interest in organic food products and environmental friendly practices has emphasised the importance of selecting crop varieties suitable for the low‐input sector. Moreover, in recent years the relationship between diet and human health has gained much attention among consumers. The aim of this study was to comparatively evaluate the agronomic performance and the nutrient and phytochemical composition of old and modern Italian wheat genotypes grown under low‐input management. RESULTS: Research highlighted that several old wheat genotypes were comparable to the modern ones in terms of agronomic performance and nutrient content. Genotype and environmental conditions (growing season), as well as their interaction, significantly affected the phytochemical composition of wheat grains for most of the analysed bioactive compounds. High variability was observed among the wheat genotypes for dietary fibre (154.7–183.3 g kg−1), polyphenol (1.94–2.77 mg g−1), tocopherol (9.1–21.2 mg kg−1) and carotenoid (701.4–3243 µg kg−1) content. CONCLUSION: The comparative study of old and modern wheat varieties highlighted that, under low‐input conditions, ancient genotypes may equal modern ones in terms of agronomic traits and additionally provide nutraceutical value‐added wheat grains. The most promising ancient varieties for the unique phytochemical profiles are Gentil rosso, Marzuolo d'aqui and Verna.

Four varieties of blackgram viz., UH 04-04. UH 04-06. T-9 and Uttra were evaluated for nutrient composition and subjected to various domestic processing treatments like soaking. soaking and dehulling and fermentation. The crude protein. fat. ash and crude fiber content ranged from 19.98-22.06;. 1.20-1.35;.3.48-3.82; and 2.60-3.03;. respectively. Protein digestibility (in vi O) and starch digestibility (in vitro) of different varieties varied from 54.26-61.60; and 36.80-43.27 mg maltose eleasedlg. respectively. All the processing treatments resulted in improving the in vitro digestibility of protein an, starch of all the varieties. Fermentation was found to be the best method of domestic processing. Such simple processing treatments can be adopted for improving the nutritional quality of the legumes.