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University of Wisconsin-Extension

Plant Nutrition, Fertility, and Soil Health

Petiole Sampling for Determining Fertilization Needs in Cold-Climate Grapes

Petiole Sampling for Determining Fertilization Needs in Cold-Climate Grapes

Assessing the nutritional status of your grapevines through mature leaf petiole sampling is one of the most useful tools growers have for managing vineyard health and productivity.

▶ Soil Health: What is it, and how do you impact it on your farm?

▶ Soil Health: What is it, and how do you impact it on your farm?

This video covers simple in‑field observations to assess soil structure, compaction, water movement, and soil life, along with practical management practices such as reduced tillage, cover crops, mulches, and soil cover to improve soil function over time.

Fertilization Guidelines for Mature Apple Trees

Fertilization Guidelines for Mature Apple Trees

Interpreting foliar nutrient analysis can sometimes be challenging for growers, particularly when trying to determine whether fertilizer applications are needed and at what rate.

Living Aisles Case Study #1: Sawyer Farm, Worthington, MA & Momentum Ag

Living Aisles Case Study #1: Sawyer Farm, Worthington, MA & Momentum Ag

Most farmers are familiar with the benefits of cover crops: they reduce erosion, improve soil health, and help suppress weeds. Cover crops are often incorporated into fields as part of crop rotations, but they can also be planted in the aisles between cash crop beds, providing cover during a time of year when the soil is typically bare. These “living aisles” add additional advantages, such as reducing mud during rainy periods, allowing farmers to access beds when the ground is wet, and keeping harvest bins cleaner. Depending on the species used, living aisles may also be allowed to grow into beds after harvest to provide winter cover. 

▶ Cover Crops in Diversified Vegetable Systems

▶ Cover Crops in Diversified Vegetable Systems

This article walks through the timing, tools, and methods for seeding cover crops in diversified vegetable crop systems.

▶ Managing Nitrogen in Potato and Vegetable Crops

▶ Managing Nitrogen in Potato and Vegetable Crops

Dan Marzu, UW–Madison Extension Nutrient and Pest Management Outreach Specialist, and Guolong Liang, UW–Madison Extension Agriculture Water Quality Outreach Specialist, discuss managing nitrogen in potato and vegetable crops.

Diagnosing the Nutritional Status of Fruit Crops 

Diagnosing the Nutritional Status of Fruit Crops 

Routine evaluation of fruit crop nutrient status and soil composition are essential to developing sustainable nutrient management practices. This article reviews soil and tissue sampling methodology. 

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