Field-scale variability of weediness on arable land

Plant, Soil and Environment

Holec J.¹  Soukup J.¹  Hamouz P.¹  Jursík M.¹ 

关键词: weed infestation;    weed mapping;    weed population dynamics;    spatial variability;    temporal variability;    precision farming;   

DOI  :  

学科分类：农业科学（综合）

来源: Czech Academy of Agricultural Sciences

【 摘 要 】

Weed mapping was conducted on 2 fields in Central Bohemia to characterize the spatial structure and temporal stability of weed populations over four years (1999–2002). A number of plants for each species and the total weed coverage were investigated on the grid points. To determine the weed infestation variability, and the Patchiness-Index was calculated. Use of Surfer-software, and weed maps were created. For single weed species occurrence the correlation between 1999 and 2000 was calculated. The results document heterogeneous occurrences of weeds, 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 is characterized by relatively high spatial stability.

【 授权许可】

Unknown