The crop nutrient balance--the comparison of nutrients applied in relation those removed by crops--is an important indicator of the sustainability performance of crop production. Deficits in the nutrient balance can limit crop yields and deplete soil fertility, and surpluses can cause economic waste
Regional Update – 14 January 2014 Decision time. It’s time to plan the specific source, rate, time and place for every application of nutrients for the coming season. For a start, consider how well last year’s choices worked. What adjustments might be made this year? What new ideas—sources, timin
One-page news articles on current nutrient stewardship issues.
February 20, 2014 – Fertilizer and Vitamins Fertilizer nutrients influence the levels of vitamins in vegetables. Nitrogen will enhance carotene, but excessive amounts can reduce ascorbic acid, also known as Vitamin C. Potassium boosts both. In tomatoes, K enhances red color, carotenoids and espec
Materials developed by IPNI and other cooperators on 4Rs
The region has many areas with a large ratio of livestock to cropland area, leading to challenges of localized nutrient surpluses associated with managing manure as a source of plant nutrients. In addition to the crops listed above, there are many areas of fruit and vegetable production, both in field and in greenhouses, and both for fresh market and for processing. Potatoes comprise a substantial proportion of crop production in Prince Edward Island, New Brunswick and Maine. Population density is high; land development is taking land from agriculture and impinging upon agricultural activities. Turfgrasses for residential lawns, recreational parks and golf courses occupy a substantial area of land and vary widely in intensity of nutrient use.
Tom Bruulsema directs research and education programs in the Northeast region for the North American program of the International Plant Nutrition Institute, a not-for-profit, scientific organization dedicated to the responsible management of plant nutrition. Dr. Bruulsema is a Fellow in the Canadian Society of Agronomy, the American Society of Agronomy and the Soil Science Society of America, and a Certified Crop Adviser. He has research experience in soil science with Cornell University and the University of Minnesota, and in Bangladesh agronomy with the Mennonite Central Committee.