pH - Canadian Agronomist

Digging into Research

10 Jun Soil pH, nutrient stratification and spatial variability

Posted at 22:50h in Soils and Fertility

Tillage initially contributed to pH and nutrient spatial variability, but no-till management practices over the past 40 years have reduced pH and increased nutrient stratification and spatial variability. Acidification of soils, nutrient stratification, and spatial variability are issues that no-till farmers face on the Canadian Prairies....

18 Nov Lime for clubroot management

Posted at 22:41h in Disease

Fall application of Zero Grind limestone performed similar to spring applied hydrated lime. Generally, both products applied at 10 t/ha increased soil pH, reduced disease severity, increased yield and reduced spore density of P. brassicae in the soil. Clubroot, caused by Plasmodiophora brassicae Wor., is well...

13 Jun Water quality can affect herbicide performance

Posted at 16:44h in Weeds

The efficacy of weak-acid herbicides is improved with acidic spray water pH. Hard-water antagonism is more prevalent with weak-acid herbicides. Spray solution temperature between 18 C and 44 C is optimum for some weak-acid herbicides. The effect of water turbidity is severe on herbicides with...

02 Nov Hydrated lime can help reduce clubroot disease

Posted at 16:47h in Disease

Research trials found that hydrated lime may be an effective tool for managing clubroot disease in canola when optimal timing and rainfall are achieved. Field and greenhouse trials found hydrated lime more effective than limestone applications, but is much more costly. Clubroot disease, caused by Plasmodiophora...