Agricultural Science Questions and Answers

The primary characteristic of weeds in agriculture is that they compete with crops for resources. Weeds are unwanted plants that grow in agricultural fields and compete with cultivated crops for sunlight, water, nutrients, and space. They can reduce crop yields by depriving crops of essential resources and sometimes release chemicals that inhibit crop growth.

The primary goal of agricultural extension services in the field of agricultural economics is to enhance market access for farmers. Agricultural extension services provide farmers with information, training, and support to improve their understanding of market dynamics, marketing strategies, and value chain development.

Agriculture is a broad field that encompasses various branches or disciplines focused on different aspects of plant and animal production. Among the given options, Agronomy and Horticulture are the branches of agriculture.

Farmer field schools are an example of an agricultural extension method used to disseminate information to farmers. Farmer field schools are structured learning programs where farmers actively participate in hands-on training and field demonstrations.

Commercial agriculture refers to farming practices that are primarily focused on generating profit through the sale of agricultural products in the market. It involves large-scale cultivation of crops or raising of livestock with the aim of maximizing productivity and economic returns.

Pollination is the process by which pollen grains from the male reproductive organ of a flower (anther) are transferred to the female reproductive organ (stigma) of the same or a different flower.

Thinning refers to the process of reducing the number of seedlings in a plant stand to achieve proper spacing and optimum plant density. In the context of the question, thinning involves removing one out of three seedlings of maize, resulting in two plants remaining per stand.

All the tools listed are used in soil analysis. A pH meter is used to measure the acidity or alkalinity of the soil. A sieve is used to separate and grade soil and rock particles according to their size. A hygrometer is used to measure the moisture content in the atmosphere, which can affect soil moisture levels.

Cover crops are plants that are primarily grown for the benefit of the soil rather than the crop yield. They are typically grown to suppress weeds, manage soil erosion, help build and improve soil fertility and quality, and control diseases and pests. Centrosema pubescens and Mucuna utilis are examples of cover crops. They are used to improve soil fertility and control weeds.

High humidity in a brooder house creates a conducive environment for the growth and multiplication of pests and diseases. It can also lead to the development of mould and fungi, which can be harmful to the chicks.