char = E;code = 69 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = l;code = 108 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = b;code = 98 char = u;code = 117 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = o;code = 111 char = z;code = 122 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = a;code = 97 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = w;code = 119 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = h;code = 104 char = w;code = 119 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = p;code = 112 char = h;code = 104 char = y;code = 121 char = t;code = 116 char = o;code = 111 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = n;code = 110 char = k;code = 107 char = t;code = 116 char = o;code = 111 char = n;code = 110 char = :;code = 58 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = c;code = 99 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = o;code = 111 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = a;code = 97 char = y;code = 121 char = .;code = 46 result sql = Effects of propanil, tebufenozide and mefenacet on growth of four freshwater species of phytoplankton: a microplate bioassay.
Effects of propanil, tebufenozide and mefenacet on growth of four freshwater species of phytoplankton: a microplate bioassay.char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = A;code = 65 char = l;code = 108 char = b;code = 98 char = u;code = 117 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = a;code = 97 char = ;code = 32 char = N;code = 78 char = a;code = 97 char = t;code = 116 char = u;code = 117 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = P;code = 80 char = a;code = 97 char = r;code = 114 char = k;code = 107 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = t;code = 116 char = u;code = 117 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = V;code = 86 char = a;code = 97 char = l;code = 108 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = ;code = 32 char = (;code = 40 char = S;code = 83 char = p;code = 112 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = r;code = 114 char = i;code = 105 char = c;code = 99 char = h;code = 104 char = ;code = 32 char = f;code = 102 char = l;code = 108 char = o;code = 111 char = r;code = 114 char = a;code = 97 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = a;code = 97 char = u;code = 117 char = n;code = 110 char = a;code = 97 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = r;code = 114 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = r;code = 114 char = i;code = 105 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = e;code = 101 char = l;code = 108 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = i;code = 105 char = c;code = 99 char = h;code = 104 char = ;code = 32 char = p;code = 112 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = r;code = 114 char = a;code = 97 char = y;code = 121 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = g;code = 103 char = u;code = 117 char = l;code = 108 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = e;code = 101 char = .;code = 46 char = ;code = 32 char = W;code = 87 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = e;code = 101 char = n;code = 110 char = s;code = 115 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = g;code = 103 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = S;code = 83 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = m;code = 109 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = u;code = 117 char = t;code = 116 char = u;code = 117 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = S;code = 83 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = m;code = 109 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = b;code = 98 char = s;code = 115 char = p;code = 112 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = t;code = 116 char = u;code = 117 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = C;code = 67 char = h;code = 104 char = l;code = 108 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = a;code = 97 char = ;code = 32 char = v;code = 118 char = u;code = 117 char = l;code = 108 char = g;code = 103 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = C;code = 67 char = h;code = 104 char = l;code = 108 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = c;code = 99 char = c;code = 99 char = h;code = 104 char = a;code = 97 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = h;code = 104 char = i;code = 105 char = l;code = 108 char = a;code = 97 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = p;code = 112 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = l;code = 108 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = b;code = 98 char = u;code = 117 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = o;code = 111 char = z;code = 122 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = a;code = 97 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = i;code = 105 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = x;code = 120 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = O;code = 79 char = r;code = 114 char = g;code = 103 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = s;code = 115 char = m;code = 109 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = b;code = 98 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = g;code = 103 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = w;code = 119 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = u;code = 117 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = c;code = 99 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = 4;code = 52 char = 1;code = 49 char = 0;code = 48 char = ;code = 32 char = n;code = 110 char = m;code = 109 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = 0;code = 48 char = ,;code = 44 char = ;code = 32 char = 2;code = 50 char = 4;code = 52 char = ,;code = 44 char = ;code = 32 char = 4;code = 52 char = 8;code = 56 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = 7;code = 55 char = 2;code = 50 char = ;code = 32 char = h;code = 104 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = e;code = 101 char = b;code = 98 char = u;code = 117 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = o;code = 111 char = z;code = 122 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = p;code = 112 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = h;code = 104 char = i;code = 105 char = b;code = 98 char = i;code = 105 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = S;code = 83 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = m;code = 109 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = C;code = 67 char = h;code = 104 char = l;code = 108 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = w;code = 119 char = t;code = 116 char = h;code = 104 char = .;code = 46 char = ;code = 32 char = 7;code = 55 char = 2;code = 50 char = ;code = 32 char = h;code = 104 char = ;code = 32 char = E;code = 69 char = C;code = 67 char = 5;code = 53 char = 0;code = 48 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = l;code = 108 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = b;code = 98 char = u;code = 117 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = o;code = 111 char = z;code = 122 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = a;code = 97 char = c;code = 99 char = e;code = 101 char = t;code = 116 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = g;code = 103 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 2;code = 50 char = 9;code = 57 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = 5;code = 53 char = .;code = 46 char = 9;code = 57 char = 8;code = 56 char = ;code = 32 char = m;code = 109 char = g;code = 103 char = /;code = 47 char = l;code = 108 char = ,;code = 44 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 1;code = 49 char = 2;code = 50 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 1;code = 49 char = 5;code = 53 char = ;code = 32 char = m;code = 109 char = g;code = 103 char = /;code = 47 char = l;code = 108 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 2;code = 50 char = 5;code = 53 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 6;code = 54 char = 7;code = 55 char = ;code = 32 char = m;code = 109 char = g;code = 103 char = /;code = 47 char = l;code = 108 char = ,;code = 44 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = g;code = 103 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = w;code = 119 char = o;code = 111 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = C;code = 67 char = h;code = 104 char = l;code = 108 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = a;code = 97 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = l;code = 108 char = e;code = 101 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = w;code = 119 char = o;code = 111 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = S;code = 83 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = m;code = 109 char = u;code = 117 char = s;code = 115 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = The Albufera Natural Park situated in Valencia (Spain), with a very rich flora and fauna is surrounded by rice fields in which pesticide spraying is a regular practice. With this in mind, the sensitivity of four algal species, Scenedesmus acutus, Scenedesmus subspicatus, Chlorella vulgaris and Chlorella saccharophila to pesticides propanil, tebufenozide and mefenacet was studied using single species toxicity tests. Organisms were exposed to different concentrations of these herbicides and the algal growth was measured in a microplate reader at 410 nm, at 0, 24, 48 and 72 h. Tebufenozide appeared to be the most inhibitory to Scenedesmus and Chlorella species growth. 72 h EC50 of propanil, tebufenozide and mefenacet ranged from 0.29 to 5.98 mg/l, 0.12 to 0.15 mg/l and from 0.25 to 0.67 mg/l, respectively for the four algal species. The two species of Chlorella were more tolerant than the two species of Scenedesmus.
Publication: Chemosphere 2004 Jul ;56(4)::315-20.
Publication Date: 2004 Jul
Study Author(s): Gómez de Barreda Ferraz, D;Sabater, C;Carrasco, J M;
Institution: Plant Production Department, ETSMRE, Polytechnic University of Valencia, Avenida Blasco Ibañez 21, 46010 Valencia, Spain.
Shortcut link to this study:
The Albufera Natural Park situated in Valencia (Spain), with a very rich flora and fauna is surrounded by rice fields in which pesticide spraying is a regular practice. With this in mind, the sensitivity of four algal species, Scenedesmus acutus, Scenedesmus subspicatus, Chlorella vulgaris and Chlorella saccharophila to pesticides propanil, tebufenozide and mefenacet was studied using single species toxicity tests. Organisms were exposed to different concentrations of these herbicides and the algal growth was measured in a microplate reader at 410 nm, at 0, 24, 48 and 72 h. Tebufenozide appeared to be the most inhibitory to Scenedesmus and Chlorella species growth. 72 h EC50 of propanil, tebufenozide and mefenacet ranged from 0.29 to 5.98 mg/l, 0.12 to 0.15 mg/l and from 0.25 to 0.67 mg/l, respectively for the four algal species. The two species of Chlorella were more tolerant than the two species of Scenedesmus.
PMID: 15183992