Wyniki wyszukiwania - BazTech

1

Efficiency of irrigation of highbush blueberry in Poland

Tryngiel-Gać A., Treder W.

Infrastruktura i Ekologia Terenów Wiejskich

|

2017

|

nr III/2

1099--1114

EN

In the past few years, Poland has been growing into a leader in the cultivation of highbush blueberry in Europe and now occupies a very high 3rd place in world production, just behind the USA and Canada. The leading position on the European market, the growing demand for the fruit and the possibility of entering new markets present to Polish producers new opportunities and increase the number of new plantings. In the cultivation of blueberry, irrigation is a factor determining the size and quality of the crop, as the blueberry plant, due to its shallow root system, requires adequate moisture and permeability in the topsoil, generally throughout the entire growing period. The results obtained in several studies confirm the high effectiveness of blueberry irrigation, particularly on plantations at their full fruiting potential. The rise in yield achieved through the use of irrigation averaged 95%, corresponding to 4.51 t·ha-1. The average irrigation efficiency coefficient was a 41.37 kg rise in fruit yield per 1 mm (10 m3) of water used for irrigation.

2

Assessment of the effectiveness of sprinkling to protect apple blossoms against spring frost

Treder W., Tryngiel-Gać A., Klamkowski K., Kiełkiewicz M.

Infrastruktura i Ekologia Terenów Wiejskich

|

2017

|

nr III/2

1131--1143

EN

Spring frosts can cause very significant losses on fruit farms. The most common method of active protection against frost is sprinkling. The aim of this study was to assess the effectiveness of a sprinkling system used to protect apple trees against the effects of a spring frost. The experiment was conducted on the Mączewscy Fruit Farm. The orchard in which the observations were made is equipped with a system of sprinklers. When the temperature readings showed values close to zero, the sprinkler system was activated. Due to a limited water supply, one row of sprinklers had not been activated, and thus some of the trees were not sprayed at all. The assessment of fruit yield carried out in the autumn of 2015 demonstrated high effectiveness of the sprinkling used to protect apple trees against the spring frost. The frost had damaged most of the flowers of the unprotected trees, which resulted in a decrease in yield of as much as 85-93%.

3

Growth and Photosynthetic Activity of Cucumber as Influenced by Different Fertilization Regimes

Klamkowski K., Treder W., Tryngiel-Gać A.

Ecological Chemistry and Engineering. A

|

2011

|

Vol. 18, nr 1

35-41

EN

The investigation aimed at examining the changes in growth and photosynthetic activity of greenhouse-grown cucumber plants subjected to various fertilization regimes. The plants were subjected to the following treatments: standard fertilization with nutrient solution (control), foliar treatments with two fertilizers (complete or nitrogenous), without any fertilization (non-fertilized plants). The plants without fertilization were supplied with water only. Lack of fertilization resulted in the reduction of net photosynthesis and leaf chlorophyll content. The lowest rates of photosynthesis and leaf chlorophyll content were observed in the non-fertilized cucumber plants. Also, retardation in plant growth was evident in this group of plants as a result of nutrient deficiency. Foliar application of complete fertilizer (Agroleaf Power Total) had a pronounced effect on photosynthesis and growth of cucumber plants. On the other hand, the plants sprayed with nitrogenous fertilizer (Basfoliar 36 Extra) assimilated with low intensity, and their vigor did not differ significantly from that recorded for plants supplied with water only (non-fertilized).

PL

W dooewiadczeniu szklarniowym oceniono wzrost i aktywnooeć fizjologiczną rooelin ogórka w reakcji na zastosowane nawożenie. Kombinacje dooewiadczalne obejmowały rooeliny nawożone dokorzeniowo (fertygacja pożywką płynną), rooeliny nienawożone w trakcie trwania uprawy oraz rooeliny nawożone dolistnie jednym z dwóch nawozów: wieloskładnikowym (zawierającym makro i mikroelementy) lub azotowym (zawierającym azot i mikroelementy). Rooeliny nienawożone zasilane były tylko wodą. Najmniejsze natężenie fotosyntezy i zawartość chlorofilu w lioeciach wykazano w przypadku roślin nienawożonych. U tej grupy rooelin stwierdzono także najsilniejsze zahamowanie wzrostu. Spośród zastosowanych nawozów dolistnych, wyższą skuteczność wykazano w przypadku nawozu wieloskładnikowego. U roślin opryskiwanych tym nawozem stwierdzono większą zawartość chlorofilu w liściach oraz wysokie wartosci fotosyntezy netto. Rośliny traktowane nawozem wieloskładnikowym charakteryzowały się także bardziej intensywnym wzrostem.