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Tomasz Zając, Agnieszka Synowiec, Andrzej Oleksy, Jan Macuda, Agnieszka Klimek-Kopyra and Franciszek Borowiec

. Morphological and anatomical modification in winter barley culm after late plant growth regulator treatment. Eur. J. Agronomy, 11, 45-51. Sinha S.K., Bhargava S.C., and Goel A., 1982. Energy as the basis of harvest index. J. Agric. Science, 99, 237-238. Statistical Yearbook of the Republic of Poland, 2015. http://aurl.pl/Yearbook-2015 StatSoft Inc. STATISTICA (data analysis software system), version 10. 2011; www.statsoft.com. Summers M.D., Jenkins B.M., Hyde P.R., Williams J.F., Mutters R.G., Scardacci S.C., and

Open access

Effect of nitrogen fertilization and genotype on the yield and yield components of winter wheat

Einfluss von Stickstoffdüngung und Sorte auf den Ertrag und die Ertragskomponenten von Winterweizen

Eszter Sugár, Zoltán Berzsenyi, Tamás Árendás and Péter Bónis

sowing ratios ( Neugschwandtner and Kaul, 2014 ). Harvest index (HI) is a genetically determined trait and also depends on environmental conditions and the adaptation of the given genotype. Different opinions exist regarding the impact of N fertilization strategy on HI ( Sticksel et al., 2000 ). Data in the literature show that the effect of N fertilizer on HI increases with N-fertilizer application until the optimum N supply is reached, after which it decreases. However, the optimum N dose required to achieve maximum HI is debatable. Nevertheless, there is broad

Open access

A. Soleymani and M.H. Shahrajabian

Abstract

In order to estimate the water requirement of barley and wheat by using of ET-HS model, a research was conducted at Research Farm of Islamic Azad University, Isfahan (Khorasgan) Branch, Iran. ET-HS model is used to determine irrigation water quantity and irrigation schedule for different crop. The study was based on randomized complete block design (RCBD) with three replications and six treatments. The irrigation treatments included irrigation to supply 50, 75, 100, 125 and 150% of crop water demand on the basis of ET-HS model during growing season and control treatment (conventional irrigation), which was irrigation on the basis of 70 mm evaporation from Class A evaporation pan during growing season. In barley experiment, the highest values for number of fertile tiller, maximum LAI, total dry matter in maximum LAI stage, number of grain per spike, a thousand seed weight (35.56 g), grain yield (7877.9 kg/ha), biological yield (17689.7 kg/ha) and harvest index (44.45%) was obtained for irrigation according to 100% of crop water demand on the basis of ET-HS model. In wheat experiment, the highest number of fertile spike, number of grain per spike, 1000 grain weight, grain yield, biological yield was obtained for irrigation treatment on the basis of 100% ET-HS model; moreover, the maximum harvest index was related to control treatment, followed by irrigation on the basis of 100% of ET-HS model. Conclusively, the appropriate irrigation treatment was 100% of crop water demand on the basis of ET-HS model during the growth season for both crops.

Open access

Agnese Kolodinska Brantestam, Linda Legzdiòa, Therese Cristensen, Jens Weibull, Roland von Bothmer, Sergey Martynov, Flemming Yndgaard and Isaak Rashal

. Stuttgart, Thesis, pp. 48-52. Lasa, J. M., Igartua, E., Ciudad F. J., Codesal, P., García E. V., Gracia, M. P., Medina, B., Romagosa, I., Molina-Cano, J. L., Montoya, J. L. (2001). Morphological and agronomical diversity patterns in the Spanish barley core collection. Hereditas, 135, 217-225. Madic, M., Kuburovic, M.. Kraljevic-Balalic, M., Petrovic, S. (2002). Varability and variance for harvest index in winter barley. Acta Agr. Serbica, 14. 17-24. Marquez-Cedillo. L.A., Hayes, P. M., Kleinhofs, A., Legge, W. G., Rossnagel

Open access

Mohammadjavad Seghatoleslami, Hassan Feizi, Gholamreza Mousavi and Aliasghar Berahmand

Abstract

Normally the productivity of cropping systems in arid and semi- arid regions is very low. The sustainable agricultural systems try to find out environmental friendly technologies based on physical and biological treatments to increase crop production. In this study two irrigation treatments (control and water stress) and six methods of fertilizer treatment (control, NPK-F, using magnetic band- M, using silver nano particles- N, M+N and M+N+50% F) on performance of ajowan were compared. Results showed that treatments with magnetic field or base fertilizer had more yield compared to the control and silver nanoparticles (N) treatments. Application of silver nanoparticles had no positive effect on yield. The highest seed and biomass WUE achieved in base fertilizer or magnetic field treatments. Under water stress treatment, seed WUE significantly increased. In conclusion magnetic field exposure, probably by encourage nutrient uptake efficiency could be applied to reduce fertilizer requirement. On the other hand the cultivation of plants under low MF could be an alternative way of WUE improving.

Open access

Renata Gaj, Krzysztof Bąk and Anna Budka

Summary

The paper demonstrates the influence of different mineral fertilization with phosphorus and potassium on the concentration of copper (Cu) and manganese (Mn) in the ear leaf of maize at the stage of flowering (BBCH 65) as well as the contents and accumulation of the nutrients studied in maize when fully ripe (BBCH 89). A single factor experiment was carried out in 5-year-cycle (2007-2011), in the randomized complete block design. The experiment was conducted as a part of a long-term stationary trial. The investigation comprised 8 different P and K treatments: the absolute control, exclusive of one of the main nutrients (P - WPN or K - WKN), reduced amount of phosphorus and potassium (to 25% - W25 and to 50% WP50, WK50) as well as recommended amounts of basic nutrients (NPKMg - W100 and NP*KMg, P* - P* as PAPR - W100 PAPR). Evaluation of the nutriational status, performed in the ear leaf of maize at flowering stage, showed that regardless of fertilization treatment applied, the concentration of copper was lower than normative values, whereas that of manganese ranged within the optimal scope. At the same time, there was found a significant relationship between the grain yield obtained and acquisition of both copper and manganese by maize at flowering stage (stronger for manganese, r = 0.614). The total accumulation of copper and manganese in fully ripe maize was significantly differentiated as a result of mineral fertilization. The total uptake of Cu and Mn was reduced under the conditions of 10-year lack of P fertilization. Uptake reduction was considerably more advanced when K fertilization was absent for 10 years. Regardless of the experimental factor effects, more than 50% of the total copper uptake was accumulated in grain, whereas the majority of manganese was accumulated in maize leaves (50-64% of the total uptake). Correlation analysis showed a significant relationship between maize grain yield and the total accumulation of copper, whereas that of manganese was observed only in 3 of 8 treatments tested (WPN, WP50 and W100 as PAPR).

Open access

Jan Blažek and Ivana Pištěková

Früchteverwertung 45: 143-206. [in German with English abstract] Corelli Grappadelli L. 2003. Forecasting apple fruit size at harvest with the expolinear model. In: Proceedings Eufrin Workshop on Fruit Quality, Bologna, 11-14 June, pp. 28-30. Costa A.G., Noferini M., Bucchi F., Corelli Grappadelli L. 2004. Methods for early forecasting apple size at harvest. Acta Horticulturae 636: 651-659. DOI: 10.17660/actahortic.2004.636.81. DeLong J.M., Prange R.K., Harrison P.A., Schofield R.A., DeEll J.R. 1999. Using the Streif Index as a

Open access

Folia Horticulturae

The Journal of Polish Society for Horticultural Sciences (PSHS)