Naslov
The effects of rate, periodicity and timing of farmyard manure application on grassland productivity and botanical composition

Autori
Knežević, Mladen ; Leto, Josip ; Bošnjak, Krešimir ; Perčulija, Goran ; Vranić, Marina ; Kutnjak, Hrvoje ; Matić, Ivana ; Vragović, Krunoslav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
42. hrvatski i 2. međunarodni simpozij agronoma : Zbornik radova = 42nd Croatian & 2nd International Symposium on Agriculture : Proceedings / Milan Pospišil, milan - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2007, 420-423

ISBN
978-953-6135-57-8

Skup
42. hrvatski i 2. međunarodni simpozij agronoma

Mjesto i datum
Opatija, Hrvatska, 13.02.2007. - 16.02.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
botanical composition; DM yield; farmyard manure; grassland

Sažetak
The effect of farmyard manure (FYM) application (30 or 50 t ha-1) in spring or autumn, each year or every 3rd year) in comparison with two mineral fertilizations (MF) on productivity and botanical composition of semi natural grassland was investigated. Dry matter (DM) yield was significantly increased with MF (8.15 t ha-1) compared to FYM application (6.88 t ha-1). The application of FYM in the rate of 50 t ha-1 significantly increased DM yield (7.19 t ha-1) compared to 30 t ha-1 FYM (6.57 t ha-1). Annual application of FYM significantly increased DM yield (7.55 t ha-1) in comparison with the FYM application every 3rd year (6.96 t ha-1). MF increased the proportion of grasses (78.57 %), decreased the proportion of legumes (1.16 %) in comparison with FYM fertilization (69.52 % and 8.3 % respectively). Timing (spring vs. autumn) and periodicity of FYM application, nor its rate, did not significantly effect the grassland botanical composition.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA