Black Mustard Seed, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
White Mustard Seed, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Longitudinal Section of Black Pepper Berry, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Healthy and Diseased Peaches, Delaware, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Diseased Peach Shoots, Delaware, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Healthy Peach Shoot, Delaware, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Poplar Leaf Rust, Melampsora Populina, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Leaf-Spot Disease of the Maple, Maple-Leaf Blight, and Sycamore Disease, Report of the Commissioner of Agriculture, US Dept of Agriculture,...
Leaf-Spot Disease of the Maple, Maple-Leaf Blight, Phyllostica Acericola, Report of the Commissioner of Agriculture, US Dept of Agriculture,...
Grape Septosporiums, New Grape Disease, Septosporium Fuckelii, Thum, Septosporium Heteroporum, Report of the Commissioner of Agriculture, US Dept of...
Apple Rust, Roestelia Pirata, Thax., Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Apple Leaf Rust and Cedar Apple, Roestella Pirata, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Plum Pockets, Taphrina Pruni, Tul., Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Leaf Blight of Pear, Leaf Spot of Rose, Entomosporium Maculatum, Lev and Cercospora Rosaecola, Pass., Report of the Commissioner of Agriculture, US...
Leaf Blight and Cracking of the Pear, Entomosporium Maculatum, Lev., Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration,...
Powdery Mildew of the Cherry, Podosphaera Oxycantha, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .菌類
Brown Rot of Cherry, Monilia Fructigena, Plate VI, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Brown Rot of Cherry, Monilia Fructigena Pass., Plate V, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Tomato Diseases , Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .
Tomato Rot, Macrosporium Solani, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888 .蕃茄
Downy Mildew and Rot of Potato, Phytophthora Infestans, Plate II, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration,...
Downy Mildew and Rot of Potato, Phytophthora Infestans, Plate I, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration,...樹葉, 各種病症
The research pathologist Dr. John Gibbs and research forester Jim Dickinson , employees of the Forestry Commission, demonstrate an injection...
Field laboratory in Worcestershire, England, assists farmers in identifying diseases that may affect their crops.男人, 田地
europe, greece, view of greek farmer spraying poison on crops without safety mask. (it's common for mental illness to appear as the men age). - 患病植物 個照片及圖片檔
agriculture - potato late blight lesion on mid growth potato foliage showing symptomatic light halo around the lesion / alberta, canada. - 患病植物 個照片及圖片檔
agriculture - potato early blight leaf symptoms on a potato leaf caused by alternaria solani / alberta, canada. - 患病植物 個照片及圖片檔
21st June 1948, A Plant Protection expert uses a chemical spray on a crop of potatoes, to combat the Colorado beetle. This experiment takes place at...
Farmer displays coffee leaves damaged by rust fungus on coffee leaves at a plantation on the slopes of the Agua volcano near San Miguel Escobar,...
