Assess your understanding of optimal fertilization practices for pea crops, covering essential nutrients, application timing, and soil management. This quiz is designed to strengthen foundational knowledge on supporting healthy pea growth in agriculture.
Which primary nutrient do peas require in relatively low amounts compared to other crops, due to their ability to fix atmospheric nitrogen?
Explanation: Peas are legumes capable of fixing atmospheric nitrogen via symbiotic bacteria, so they require less nitrogen fertilizer than non-legume crops. Phosphorus and potassium are still commonly needed to support growth and development. Calcium is important for plant health but is not a primary nutrient for peas.
When is the best time to apply phosphorus fertilizer for maximizing pea crop uptake?
Explanation: Phosphorus is best applied at planting so the young pea seedlings can access it early for root development. Applying after flowering or just before harvest is too late for effective uptake. Application during seed dormancy is ineffective since seeds are not actively growing.
What is the preferred soil pH range for healthy pea crop growth and nutrient uptake?
Explanation: Peas grow best in soils with a pH of 6.0 to 7.5, which optimizes nutrient availability. Lower pH values (4.0–5.0) can hinder growth and nodulation, while higher values (above 7.5) may cause nutrient deficiencies and poor yields.
If you notice yellowing between the veins of pea leaves, which micronutrient deficiency might be the cause?
Explanation: Interveinal chlorosis (yellowing between the leaf veins) is a classic symptom of iron deficiency in pea plants. Zinc deficiency typically causes stunted growth, boron issues lead to poor pod development, and copper issues are less common in peas.
Why should high rates of nitrogen starter fertilizer generally be avoided when planting peas?
Explanation: High rates of nitrogen can discourage pea plants from forming root nodules, reducing their ability to fix their own nitrogen. Although excessive fertilizer may sometimes contribute to disease or weeds, the main risk with nitrogen is nodule inhibition. It does not specifically deplete soil calcium.