Agronomy MCQ Question and Answer | Agriculture MCQ Question

Glyphosate is a herbicide that specifically inhibits the biosynthesis of aromatic amino acids like phenylalanine and also inhibits plant enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS). Its exposure also inhibits symbiont establishment during host development.
The herbicide glyphosate inhibits the shikimate pathway of the synthesis of amino acids such as phenylalanine, tyrosine and tryptophan etc.

Blackgram is believed to be originated from India. It is widely used in Indian cuisine also. It is one of the most important and costly pulses grown in India. It is very popularly grown in Andhra Pradesh, Bihar, Madhya Pradesh, Maharashtra, Uttar Pradesh, West Bengal, Punjab and Haryana.

Pulses are perennial plants grown in different cropping systems. Despite the implementation of the cropping system, early sowing in pulses is not recommended mainly due to more vegetative growth. It is advised to wait for suitable environmental factors for better plant germination and survival.

The undesirable plant in any plantation is considered a weed. The most common weeds of rice plantations especially in Asia are Cyperus iria, Cyperus maritimus, Echinochloa glabrescens, Cyperus rotundus, Cyperus difformis, Paspalum distichum, Echinochloa colona, Echinochloa crusgalli and Marsilea minuta.

The standard deviation (S. D.) is a measure of the amount of variation or dispersion of a set of values. A low S. D. indicates that the values tend to be close to the mean while a high S. D. means that the values are spread out over a wider range. Hence, if all values are negative then S. D. will be positive.

Pyrheliometer is an instrument to measure a direct beam of solar radiation. Sunlight enters the instrument through a window and is directed onto a thermopile which converts heat to an electrical signal that can be recorded. It is used in meteorological and climate observations, material testing research and assessment of the efficiency of solar collectors.

Puddling is the tillage of rice paddies while submerged, it is an ancient practice that is used to prepare the field for rice cultivation. Earlier it was done by buffalo or ox, nowadays with the advancement of technologies, tractors are used. This practice reduces the percolation rate of water and creates an impermeable layer by churning the clay particles.

Rainfed farming is a farming type that depends on the rainfall for water. Rainfed areas in India are highly diverse, with approximately 40 - 45% of total agricultural land ranging from resource rich areas to resource constrained areas. Out of 329 million hectares of the total geographical area of India, around 150 million hectares are net sown area while 65 - 70 million hectares are rainfed.

Protein is one of the basic nutrients required by the human body, carbohydrates, fats, vitamins, and minerals. Proteins are also called building blocks of the body. The deficiency of protein lead to various disease, one of them is Kwashiorkor.

Rice is a Kharif crop, that needs a hot and humid climate. Best production occurs in areas of high humidity, prolonged sunshine, and an assured supply of water. The average temperature required is 21°C - 37°C, but it tolerates up to 45°C. Rice is semi aquatic plant as it grows in submerged fields and needs consistent irrigation all through the life cycle.