Field-scale variability of weediness on arable land
2004
Hamouz, P. | Soukup, J. | Holec, J. | Jursik, M. (Ceska Zemedelska Univ., Prague (Czech Republic))
Weed mapping was conducted on 2 fields in Central Bohemia (Czech Republic) to characterize the spatial structure and temporal stability of weed populations over four years (1999-2002). The number of plants for each species and the total weed coverage were investigated on the grid points. The Patchiness Index was calculated to determine the weed infestation variability. Weed maps were created using the Surfer software and correlation coefficients for weed species occurrence between the years 1999 and 2002 were calculated. The plants were unevenly distributed, especially Cirsium arvense (PI=9.09-15.86), Tripleurospermum maritimum (PI=11.01-217.30) and Galium aparine (PI=4.61-7.70), whereas Viola arvensis and Stellaria media were distributed more homogeneously. Weed grasses occurred in all years slightly. G. aparine was characterized by relatively high spatial stability.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Library of Antonin Svehla