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Dynamika wiosennych zjawisk fenologicznych w drzewostanie dębu bezszypułkowego (Quercus petraea [Matt.] Liebl.)

100%

Bedkowski K.

Sylwan

2018

tom 162

nr 12

Numerous studies show that in the pedunculate and sessile oaks there are two forms that differ in terms of the spring development of leaves – one can distinguish early and late variants. Acceleration of leaves development gives the particular tree a chance to gain advantage over others, as well as enables to avoid herbivory caused by insects. However, it is fraught with the risk of damage caused by the late frosts. In turn, trees that develop leaves later can avoid losses, but they have to face the shortened growing season. The article presents the results of repeated observations of the spring development of sessile oak trees in about 90−year old stand in central Poland (19.920365° E, 51.837381° N). The trees were observed every week and classified into one of six classes of leaves development – from the absence of bud burst symptoms to the fully−developed leaf. It was found that over time, the share of trees was gradually increasing at higher and higher stages of development, while at the end of the observation period the rate of development of trees was very high. Importantly, at each stage of development, the trees emerged, which proceeded to much faster development than previously, and their share was increasing over time, as shown in the elaborated model of stand development.

Daty poczatku kwitnienia wisni

84%

Gromisz M., Gromisz Z.

Sad Nowoczesny

1995

nr 11

5-6

Ochrona zboz po ukazaniu sie liscia flagowego

67%

Raport Rolny

2008

nr 04

Klucz do określania faz rozwojowych lnu i skali BBCH

67%

Heller K.

Len i Konopie. Biuletyn Informacyjny Polskiej Izby Lnu i Konopi

2006

nr 07

Ograniczanie wyników

1 Len i Konopie. Biuletyn Informacyjny Polskiej Izby Lnu i Konopi

1 Raport Rolny

1 Sad Nowoczesny

1 Sylwan

1 Bedkowski K.

1 Gromisz M.

1 Gromisz Z.

1 Heller K.

1 2018

1 2008

1 2006

1 1995

Wyniki wyszukiwania

Dynamika wiosennych zjawisk fenologicznych w drzewostanie dębu bezszypułkowego (Quercus petraea [Matt.] Liebl.)

Daty poczatku kwitnienia wisni

Ochrona zboz po ukazaniu sie liscia flagowego

Klucz do określania faz rozwojowych lnu i skali BBCH