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Farmers need to be fully aware of the risk of pesticide contamination of water resources. Pesticides threaten aquatic ecosystems. Many dangerous pesticides are found in water and sediments; frequently at levels above concentrations lethal to zooplankton, the small aquatic organisms eaten by fish. Insecticides diazinon and chlorpyrifos and herbicides simazine, diuron, and . . . → Read More: Is my water resource “at risk” from Pesticides? runoff turbidity Turbidity is the cloudiness or haziness of a fluid caused by individual particles (suspended solids) that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality. Water can contain suspended solid matter consisting of particles of . . . → Read More: What is Turbidity? a riverbed discoloured by iron deposits along its banks in Colorado, USA. Soluble and bacterial Iron in your water can cause blockages to pipes, discolour leaves and reduce photosynthesis efficiency if used for irrigation. Iron is a common problem in water in many places and levels as low as 0.1mg/L (0.1 ppm) . . . → Read More: Is the Iron in my irrigation water a problem? The presence of both Chlorides and of Calcium Carbonate will affect a primary production enterprise’s productivity. Chlorosis (yellowing and hardening) of leaves is the usual symptom to look out for the presence of chlorides. Calcium Carbonate can cause pipes to block or corrode. Chlorides High Chloride levels in water may cause poor growth . . . → Read More: Are Chlorides and Calcium Carbonate affecting my farm productivity? high soil sodicity Sodium in irrigation water will affect the productivity of your primary production enterprise. Sodicity is the concentration of Sodium (Na+) ions in the water. The balance of sodium ions relative to calcium and magnesium ions is called the sodium adsorption ratio. Areas in Australia adversely affected by sodicity . . . → Read More: How does Sodium affect my productivity? Water’s acidity, neutrality or alkalinity is denoted by pH. It is measured on a scale of 0-14 with 7 being neutral. Readings below 7 are acidic and above 7 they are alkaline. Water with any reading between 6.0 and 8.5 is considered suitable for irrigation. Also, water outside this pH range used in spray . . . → Read More: How is the pH of my water affecting my farm’s productivity? |
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