Control threshold 第1页

A STUDY ON THE CONTROL THRESHOLD OF CERACRIS KIANGSU TSAI THE ECONOMIC THRESHOLD AND FORECAST OF THE LARCH NEEDLE BROWN RUST Spatial distribution pattern and sequential sampling of Colorado potato beetle, Leptinotarsa decemlineata Say STUDY ON THE ASCENDENT CRABGRASS‘‘ ECO-ECONOMIC THRESHOLD MODEL AND ECO-ECONOMIC CONTROL THRESHOLD MODEL IN SUMMER GROUNDNUT FIELD PRELIMINARY STUDIES ON THE YIELD LOSSES OF TAKE-ALL DISEASE OF CORN AND ITS CONTROLLING THRESHOLD OPTIMAL STAGE AND THRESHOLD OF THE CONTROL OF SCLEROTINIA ROT THE CONTROL EFFECT OF ALLOTHROMBIUM SP.AGAINST COTTON APHID STUDIES ON THE DAMAGES AND CONTROL THRESHOLDS OF HOLOTRICHIA OBLITA FALDERMANN AND H.MOROSA WATERHOUSE TO PEANUT The Developmental Threshold and the Control Threshold of Larch Leaf Cast STUDIES ON THE CONTROL THRESHOLD OF THE SILK TREE SCALE (AONIDIELLA SOTETSU (Takahashi)) Competition of Beckmannia syzigachne with transplanted rape and its economic control threshold EFFECT OF WHETHER ON SCLEROTIORUM OF RAPE AND THRESHOLD OF CONTROL INCIDENCE FACTORS OF KERNEL SMUT OF RICE AND ITS CONTROLLING THRESHOLD A STUDY ON THE COMPOUND CONTROL THRESHOLD OF Pinus armandi BLISTER RUST AND Pineus armandicola STUDIES ON YIELD LOSS AND DYNAMIC ECONOMIC THRESHOLD OF SHEATH BLIGHT OF HYBRID EARLY RICE