The levels of elements in soil vary constantly as conditions change. Nitrogen is particularly troublesome in this respect, as it is easily transported in its nitrate form by soil moisture. This means that if it rains heavily or the land is over-irrigated, and soil moisture moves below the root zone, the nitrogen will be lost to the plant.
If you are growing tomatoes using drip irrigation, you’ll need to be extra vigilant as it is easy to over-irrigate.
It is impossible to properly determine the depth of penetration by simply looking at the wet surface. You have to probe the soil or use tensiometers to determine the depth to which the irrigation water has penetrated.
A nitrogen deficiency usually starts to show on the older foliage.
IRON AND CALCIUM
ãã®èšäºã¯ Farmer's Weekly ã® Farmer's Weekly 8 July 2022 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã9,000 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã ?  ãµã€ã³ã€ã³
ãã®èšäºã¯ Farmer's Weekly ã® Farmer's Weekly 8 July 2022 çã«æ²èŒãããŠããŸãã
7 æ¥éã® Magzter GOLD ç¡æãã©ã€ã¢ã«ãéå§ããŠãäœåãã®å³éžããããã¬ãã¢ã ã¹ããŒãªãŒã9,000 以äžã®éèªãæ°èã«ã¢ã¯ã»ã¹ããŠãã ããã
ãã§ã«è³Œèªè ã§ã? ãµã€ã³ã€ã³
ARC names best dairy producers of the year
The Agricultural Research Council (ARC) recently announced the winners of the 2024 National Master Dairyman Awards at an event hosted by AgriExpo in Stellenbosch, Western Cape.
Lion breeders to give up bone stockpiles?
The Ministry of Forestry, Fisheries and the Environment issued an official notice in mid-November in which it called on lion breeders to voluntarily hand over their lion bone stockpiles to the state as soon as possible.
Thousands of British farmers march on parliament against inheritance tax
Thousands of UK farmers gathered in London, England, on 19 November to demand the government repeal a proposed inheritance tax on agricultural land, which they argued threatened the future of family-run farms (see page 4), Al Jazeera reported.
Avocado frittata with sundried tomatoes, feta and olives
This wholesome, vibrant frittata is perfect for brunch or a light supper. Recipe and photo: The South African Avocado Growers' Association.
Feed, hay, and other costs are up, so it's time to get creative
Breeders and riding schools need to explore innovative ways to generate income in order to ensure their survival, says Dr Mac.
How to make polystyrene seedling trays last longer
While thinking about how to prolong the lifespan of polystyrene seedling trays that are exposed to harsh sunlight, Bill Kerr began to wonder if a coat of paint might offer a solution.
Living the 'culture' in agriculture
Creation Wines has won numerous awards, was ranked fourth in the Worldâs Best Vineyards in 2023, and more recently won the VÂ dâOr award for the Best Brand Experience. The owners, Carolyn and Jean-Claude Martin, spoke to Glenneis Kriel about how their winery became a top tourism destination.
Time to take a deep breath on the slopes of the Magaliesberg
Around 100km from both Johannesburg and Pretoria in Gauteng and a tad over 40km from Rustenburg in North West, Farmerâs Weekly found a fine retreat on a working farm where couples may kindle their romance.
African penguins could be extinct by 2035 how to save them
Protecting the critically endangered African penguin is good for the environment, other animal species, and the economy, say Lorien Pichegru and Dr Alistair McInnes of Nelson Mandela University, Katrin Ludynia of the University of Cape Town, and Peter Barham of the University of Bristol in the UK.
An urgent need to confront Nassella in SA
South American grass species from the genus Nassella were unwittingly introduced to South Africa over 120 years ago and continue to invade montane veld. As Mike Burgess writes, research-based action is required.
