The combination of inputs that enhances healthy growth of crops is irrigation and fertilizer.
Irrigation refers to the process of supplying water to crops, and it is essential for their growth because water is one of the primary components that plants need to survive. Fertilizers, on the other hand, are chemical or organic compounds that provide essential nutrients to plants, such as nitrogen, phosphorus, and potassium. These nutrients help plants grow strong and healthy, and they also help them resist disease and pests.
When these two inputs are combined, they create the optimal conditions for plant growth. Irrigation ensures that the plants have access to water at all times, which helps them absorb the nutrients from the fertilizer more effectively. Fertilizer, in turn, provides the plants with the nutrients they need to grow quickly and vigorously.
In contrast, the other combinations of inputs listed are not as effective for promoting healthy crop growth. Tractors and cash may be useful for purchasing inputs like fertilizer and irrigation systems, but they do not directly contribute to plant growth. Work bulls and implements are traditional methods of farming that may not be as efficient as modern irrigation and fertilization techniques. Finally, cutlasses and sacks are useful for harvesting crops, but they do not provide the necessary inputs for plant growth.