Yellowing of older leaves, followed by necrosis, starting from the leaf margins, is a characteristic symptom of deficiency of which nutrient in many horticultural crops, especially under water stress?

Consider the following statements regarding integrated pest management (IPM) in horticultural crops:
1. IPM relies solely on chemical pesticides for pest control.
2. Biological control agents like predators and parasitoids are key components of IPM.
3. Cultural practices such as crop rotation and resistant varieties are encouraged in IPM.
Which of the statements given above is/are correct?

Which of the following practices is most effective in managing salinity stress in areas with high saline groundwater for horticultural crops?

The botanical name of the insect commonly known as 'Diamondback Moth', a significant pest of cole crops like cabbage and cauliflower, is:

Gummosis is a common symptom of disease in which of the following horticultural crops, often associated with phytophthora infections?

Match the following abiotic stress factors with their primary plant responses:

Stress Factor	Plant Response
1. Drought	A. Proline accumulation
2. Salinity	B. Increased synthesis of heat shock proteins
3. Heat	C. Stomatal closure
4. Cold	D. Production of antifreeze proteins

Which of the following options represents the correct match?

Which of the following is a common biological control agent used against various soft-bodied insect pests like aphids and mealybugs in greenhouses?

The term 'chlorosis' in plants refers to:

Which of the following diseases is transmitted by the whitefly (Bemisia tabaci) and causes significant yield losses in tomato and other solanaceous vegetables?

A deficiency of Boron in cauliflower leads to a physiological disorder known as:

Which of the following cultural practices is most effective in preventing soil-borne diseases in horticultural nurseries?

Arrange the following steps for managing a severe fungal disease outbreak in a horticultural field in the correct chronological order:
1. Identify the causal agent and disease.
2. Apply appropriate fungicides based on diagnosis.
3. Remove and destroy infected plant material.
4. Implement preventive measures for future crops (e.g., resistant varieties).
Choose the correct sequence:

The use of anti-transpirants is a strategy primarily employed to mitigate which type of abiotic stress in horticultural crops?

Which of the following statements is INCORRECT regarding the management of frost injury in orchards?

A common symptom of 'die-back' in fruit trees, where branches start dying from the tip downwards, is often associated with:

Which nematode species is a significant pest of a wide range of horticultural crops, causing root galls and nutrient uptake impairment?

What is the primary objective of using trap crops in pest management for horticultural systems?

Which of the following strategies is NOT considered a direct method for managing heat stress in horticultural crops?

The use of 'Neem oil' as a pesticide is an example of which pest management approach?

Consider the following pairs of nutrient deficiency and its symptom:

Nutrient Deficiency	Symptom
1. Nitrogen	Purple coloration of leaves
2. Iron	Interveinal chlorosis of young leaves
3. Molybdenum	Whip-tail in cauliflower
4. Calcium	Blossom End Rot in tomato

How many of the pairs given above are correctly matched?

Which of the following is an effective method for managing powdery mildew in grapevines?

Plants grown under waterlogged conditions often suffer from oxygen deficiency, a condition known as:

A deficiency of which micronutrient primarily affects chlorophyll formation, leading to severe chlorosis, especially in young leaves, and is often exacerbated in calcareous soils?

Which of the following methods is a common non-chemical approach to control perennial weeds in established orchards?

The primary mode of action of systemic insecticides in managing sucking pests is:

Which of the following terms describes the ability of a plant to withstand a specific stress condition and still grow and produce yield, though potentially reduced?

The fungal disease 'Anthracnose' (caused by Colletotrichum gloeosporioides) is a major post-harvest concern for which of the following fruits?

Which of the following statements about soil pH and nutrient availability is correct?

The primary mechanism by which mulching helps in abiotic stress management is: