Coromandel International Agronomist Interview Questions and Answers

Vermicompost typically has NPK ratios of 1.5-0.5-1.0

• NPK ratios in vermicompost are usually around 1.5-0.5-1.0

• Nitrogen (N) content is higher compared to Phosphorus (P) and Potassium (K)

• Example: A typical NPK ratio in vermicompost could be 1.5-0.5-1.0

Deficiency symptoms of sulphur include yellowing of leaves, stunted growth, and reduced seed production.

• Yellowing of leaves, especially in younger leaves

• Stunted growth and reduced plant vigor

• Delayed flowering and reduced seed production

• Necrosis or death of leaf tips and margins

• Interveinal chlorosis, where the veins remain green but the tissue between them turns yellow

Nitrogen deficiency symptoms include yellowing of older leaves, while sulphur deficiency symptoms include yellowing of younger leaves.

• Nitrogen deficiency symptoms: yellowing of older leaves, stunted growth, reduced yield

• Sulphur deficiency symptoms: yellowing of younger leaves, stunted growth, delayed flowering

• Nitrogen deficiency often affects the lower leaves first, while sulphur deficiency affects the upper leaves

• Nitr...read more

Bentonite sulphur is a slow-release form of sulphur that is more suitable for certain soil conditions and crops.

• Bentonite sulphur releases sulphur slowly, providing a longer-lasting source of sulphur for plants.

• It is more effective in alkaline soils where traditional sulphur forms may not be as readily available to plants.

• Bentonite sulphur can also help improve soil structure and water retention.

• Some crops, such as oil...read more

The normal ratio of NPK (Nitrogen, Phosphorus, Potassium) in soil is 4:2:1.

• The normal ratio of NPK in soil is 4 parts Nitrogen, 2 parts Phosphorus, and 1 part Potassium.

• This ratio is commonly used for balanced plant growth and development.

• For example, a fertilizer with an NPK ratio of 16-8-4 would contain 16% Nitrogen, 8% Phosphorus, and 4% Potassium.

Calcium deficiency in apical buds leads to distorted growth and dieback.

• Calcium is essential for cell wall structure and strength in plants.

• Deficiency in calcium can result in distorted growth and dieback in apical buds.

• Symptoms include tip burn, stunted growth, and leaf curling.

• Calcium deficiency can also lead to blossom end rot in fruits like tomatoes.

• Proper calcium levels are crucial for overall plant health and dev...read more

The 3 major factors for flower dropping in plants are environmental stress, nutrient deficiencies, and pest infestations.

• Environmental stress such as extreme temperatures, drought, or excessive humidity can cause flower dropping.

• Nutrient deficiencies, particularly in essential nutrients like nitrogen, phosphorus, or potassium, can lead to flower dropping.

• Pest infestations, such as aphids, mites, or caterpillars, can da...read more