- Tytuł:
-
Badania nad zmiennością masy korzenia buraka cukrowego w łanie i jej uwarunkowaniem w polowym doświadczeniu czynnikowym 2(5)
Studies on variation of root weight of sugar beet plant in a population and its determination in 2(5) factorial field experiment - Autorzy:
-
Wyszynski, Z.
Madry, W.
Kalinowska-Zdun, M.
Rozbicki, J. - Powiązania:
- https://bibliotekanauki.pl/articles/801609.pdf
- Data publikacji:
- 1997
- Wydawca:
- Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
- Tematy:
-
buraki cukrowe
masa korzeniowa
zmiennosc
czynniki agrotechniczne
terminy siewu
terminy zbiorow
nawozenie azotem
dawki nawozowe
metody nawozenia
czynniki srodowiska
doswiadczenia czynnikowe
analiza wariancji
wspolczynnik regresji - Opis:
- The aim of the paper is to evaluate the effects of five agrotechnical factors on: a) mean root weight of sugar beet plants per plot and within-plot standard deviation of root weight, b) coefficient of determination for root weight of sugar beet plants by three independent variables x₁, x₂ and х₃ and standardised partial regression coefficients for those independent variables. The factors investigated in a 2⁵ factorial field experiment were: sowing date (A), harvest date (B), N rate (C), N application date (D) and division of N rate (E). Multiple linear regression analysis was carried out using plants from one row of 10 m length for each of 32 experimental plots. The independent variables were: xi - the state of plant development 30 days after sowing (measured by the number of leaves), x₂ - growing space per plant in a population, х₃ - coefficient of location, defined as the ratio of half the distance to its the nearest neighbour within the row to half the distance to its further neighbour within the row. A factorial analysis was carried out using the above parameters concerning a sugar beet population. It was proved that: 1) variation of root weight of sugar beet plants in a population was significantly larger for early sowing compared to late sowing and was larger for late harvest and higher N rate compared to the other levels of these factors, 2) the influence of development stage (x₁) on root weight was significantly larger for early sowing compared to late. A higher N rate increased the influence of the x₁ variable, 3) the effect of growing space (x₂) on root weight was larger for early sowing date and late harvest date, 4) the interactions between factors in a sugar beet population as presented in this paper are complicated and modified by agrotechnical factors and weather conditions, and should be further studied in other experiments.
- Źródło:
-
Zeszyty Problemowe Postępów Nauk Rolniczych; 1997, 439
0084-5477 - Pojawia się w:
- Zeszyty Problemowe Postępów Nauk Rolniczych
- Dostawca treści:
- Biblioteka Nauki
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