Agronomy MCQ Question and Answer | Agriculture MCQ Question

Milpa is a crop-growing system used throughout Mesoamerica. It is a modified form of the Slash & burns cropping system usually practiced in hilly areas of our country.
As like in slash and burn, in the milpa system of cropping also a field is cleared from the jungle, cropped for a few seasons and then abandoned for a fresh clearing.

Heavy applications of potassium fertilizers often lead to reduced absorption of zinc and copper.
The high availability of potassium is unhealthy for plants because it affects the absorption of other critical nutrients required for the development of plants.
Whereas the low percentage of potassium can also prevent excess phosphorus from running into the waterways which may damage the aquatic life.

There are overall 17 essential mineral nutrients for plants and these are carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Potassium, Sulphur, Calcium, Magnesium, Boron, Chlorine, Copper, Iron, Manganese, Molybdenum, Nickel and zinc.
All these are required in specific proportions by the plants for their proper growth and development.

Disk Plough is a primary tillage implement. It employs around, concave disks of hardened steel, sharpened and serrated on the edge, with diameters ranging from 20 - 38 inches.
It is used in the dry and hard soil for the first soil tillage after the last harvest.

It is believed that groundnut is native to Brazil. The oldest remains of pods have been dated about 7,600 years old, possibly a wild species that was in cultivation.
The scientific name of the groundnut is Arachis hypogaea. It is a legume crop grown for its edible seeds.

Pusa-9 variety of arhar is developed in IARI, Pusa.
It is being cultivated in Assam, Bihar, West Bengal, and Other North Eastern states. This variety is suitable for cultivation in that agro-climatic regions.
It matures in 130 - 140 days.

Purity analysis of seeds is done to find the proportion of pure seed component in the seed along with, seeds of other crops, weed seed and inert matter by weight in percentage.
The percentage of impurity in a seed sample is termed Dockage, which is the presence of foreign matter in seeds, determined by analysis of the seed.

Out of the following Rape seed is the semi-tolerant crop of salinity. It means the crop is tolerant to the moderate levels of salt in the soil water.
Rapeseed is a bright-yellow flowering member of the family, cultivated for its oil-rich seeds. It can be cultivated on a wide variety of well-drained soils. with pH between 5.5 to 8.3.

Rice equivalent yield is calculated to compare system performance by converting the yield of non-rice crops into equivalent rice yield on a price basis.
Formula: REY = Yx (Px/Pr)
Where, Yx is the yield of non-rice crops (kg/ha) = 4,000 kg/ha of wheat
Px is the price of non-rice crops (Rs. per kg) = 2,000 per qt
Pr is the price of rice (Rs. per kg) = 30,000 per ton
Here, REY = 8.66 t/ha

Silique or siliqua is the fruit of the mustard family. It resembles a seed capsule having two fused carpels with the length being more than three times the width.
When it becomes dry, then the length is less than three times the width of the dried fruit, then it is called a silicle. Further, the outer walls of the ripe fruit are separate and named as dehiscent.