Agronomy MCQ Question and Answer | Agriculture MCQ Question

The base period for any crop is the total period of the plantation from the day of first irrigation provided to the field till the last watering before harvesting.
The formula to calculate Base period
$$\Delta = \frac{{{\text{B}} \times 24 \times 60 \times 60}}{{{\text{D}} \times {\text{104}}}} = \frac{{8.64{\text{B}}}}{{\text{D}}}{\text{ metres}}$$
Where, D = Duty in hectares/cumec = 1200 hectares/cumec
            $$\Delta $$ = Total depth of water supplied in metres (Delta) = 50 cm = 0.5 m
             B = Base period in days
Therefore, $${\text{B}} = \frac{{0.5 \times 1200}}{{8.64}} = 69.44 = 70{\text{ days approx}}{\text{..}}$$

Oryza is a genus of plants in the grass family. It includes the major food crop rice. It consists of 24 species and taxa. There are four major categories of rice worldwide: Indica, Japonica, aromatic and glutinous. Members of the genus grow as tall, wetland grasses, growing to 1 - 2 meters tall, the genus includes both annual and perennial species.

Conservation agriculture is based on three main principles:
i. Minimum mechanical soil disturbance. (i.e. no tillage)
ii. Permanent soil organic cover minimum of 30% with crop residues or cover crops.
iii. Species diversification.

Oats are Mediterranean origin crops belonging to the family Poaceae. The scientific name of oats is Avena sativa. There is more than 70 variety of oats available but only a few are being cultivated and Kent, Coachman and Fleming gold are varieties of oats. Kent was released in 1975 and is introduced in the USA and is resistant to rust and blight.

An uncoupler or uncoupling agent is a molecule that disrupts oxidative phosphorylation in prokaryotes and mitochondria or photophosphorylation in chloroplasts by dissociating the reactions of ATP synthesis from the electron transport chain. Uncouplers are capable of transporting protons through mitochondria and lipid membranes. It also disrupts the electrochemical potential gradient.

Nitrogen fixation is one of the important characteristics of legumes, they are capable of fixing atmospheric nitrogen in symbiotic association with Rhizobium bacteria. There are several methods available to quantify nitrogen fixation and the most common method is the Acetylene Reduction assay.

India is entirely dependent on imports to meet the Potash demand (K-fertilizers). India's dependency on imports at present is approx. 25% for urea, (0% in case of Phosphates and 100% in case of Potash. All the potassium based fertilizer required by the farmers of our country is imported. India imports nearly 3.5 million tonnes of potash every year from Canada, Israel and Jordan.

TPH in tractors stands for Three point Hinge. This design used with agricultural tractors is quite evolved and it increases the efficiency of tractors. It provides accurate control determined by the operator. TPH 280, and 290 come with hydraulic electro distributors provided with a multifunctional joystick to ensure a sensitive control of the tools.

Non–governmental organization portal i.e. NGO is i-kisan. i-kisan is an agricultural portal a one stop information resource center for the farmer. It provides the development and dissemination of best practices and information through a unique multi lingual information website for the agricultural sector.

Adsali crop of sugarcane is planted in June/July. Sugarcane is an intermediate day length perennial plant. Adsali crop plantation is mainly followed in low rainfall areas of Maharashtra and the crop remains in the field for 18 months. This practice provides a longer period for vegetative growth therefore it gives a higher yield, approximately 1000 - 1200 quintal/hectare.