Common farming questions
How much water do tomato plants need?
Tomato water needs vary with soil, weather, plant size, growth stage and irrigation method. Keep the root zone evenly moist without prolonged waterlogging, check moisture below the surface, and adjust for rainfall. Use the irrigation calculator as an estimate, not a universal schedule.
What is the best fertilizer for tomatoes?
There is no single best fertilizer for every tomato field. Choose fertilizer from a soil test, crop stage, variety, target yield and product analysis. Follow local extension guidance and the product label. Read the tomato fertilizer guide.
How do I calculate plant population?
For one hectare, estimate planting positions with 10,000 divided by row spacing in metres multiplied by plant spacing in metres. Reduce the order quantity for paths, poor germination, mortality and unusable areas. Try the plant population calculator.
How is irrigation water calculated?
A basic estimate uses crop water use, which is reference ETo multiplied by Kc, subtracts effective rainfall, then divides by irrigation-system efficiency. Weather, soil, crop stage and measured system output should adjust the estimate.
What soil pH do vegetables need?
Vegetable pH preferences vary by crop and soil. Test the soil with a representative sample, then use the laboratory recommendation for lime or other amendments. Read Understanding Soil pH.
How do I calculate farm profit?
Estimated farm profit is expected saleable yield multiplied by selling price, minus total production costs. Include seed, fertilizer, labour, water, transport, packaging, rent and other applicable costs. Try the farm profit calculator.
When should I plant my crop?
Planting windows depend on local rainfall, temperature, frost risk, soil moisture, crop variety and whether the crop is irrigated. Use the crop calendar as a planning estimate and confirm timing with current local weather and agricultural extension advice.
How can farmers reduce water waste?
Repair leaks, measure delivery, maintain emitters, reduce runoff, keep suitable soil cover, control weeds and irrigate according to root-zone moisture and crop stage. Read How to Reduce Water Waste.