IBPS RRB Agriculture Officer flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Kharif versus Rabi crops

Kharif crops are sown with the monsoon in June–July and harvested in autumn, such as rice, cotton, and groundnut. Rabi crops are sown October–December and harvested March–April, such as wheat, gram, and mustard.

Khaira disease of rice

Khaira is zinc deficiency in rice, showing rusty-brown spots and stunted growth, usually in flooded or alkaline soils. It is corrected by soil application of zinc sulphate or foliar zinc sprays.

Economic threshold level (ETL)

ETL is the pest population density at which control measures are justified to prevent economic loss. Chemical spraying below ETL is avoided in integrated pest management to save cost and reduce resistance.

Seed certification classes

Seed moves from breeder seed to foundation seed to certified seed under the Seeds Act, 1966. Certified seed is the final commercial class, meeting prescribed germination and genetic purity standards enforced by state certification agencies.

DAP fertilizer grade

DAP (di-ammonium phosphate) has the grade 18-46-0, meaning 18% nitrogen and 46% phosphorus as P2O5. It is a widely used basal fertilizer for phosphorus in Indian agriculture.

Critical irrigation stages in wheat

Wheat is most sensitive to water stress at crown root initiation (about 20–25 days after sowing) and at flowering and grain filling. Irrigating at these stages gives the highest yield response per unit water.

Syllogism validity rule

A syllogistic conclusion is valid only if it holds in every possible Venn arrangement of the premises. Apply 'all' as subset, 'some' as overlap, and 'no' as disjoint before accepting a conclusion.

Opposite letter rule

In the English alphabet, opposite letters sum to 27: A pairs with Z, B with Y, and M with N. This rule quickly solves coding and letter-pair questions without writing the full alphabet.

Circular seating left direction

When people face the centre of a circle, their left is clockwise and right is anticlockwise. When facing outward, the directions reverse. Fix the most constrained person first before placing others.

Blood relation tree method

Draw generations vertically and siblings or spouses horizontally, marking gender on each node. Resolve phrases like 'only son of my grandfather' by tracing the exact stated relationship, not assumed ones.

Net percentage change formula

For successive percentage changes of a% and b%, the net change is a + b + ab/100. A 20% increase followed by a 20% decrease therefore results in a net 4% decrease.

Alligation rule

Alligation gives the ratio of two quantities mixed to a mean price: (mean price − cheaper price) : (dearer price − mean price). It also solves mixture and dilution problems quickly.

CI minus SI for two years

For two years at rate R, compound interest minus simple interest equals P(R/100)². This shortcut answers many exam questions without computing both interests separately.

Average speed equal distances

When equal distances are covered at speeds a and b, the average speed is 2ab/(a+b), not the arithmetic mean. This harmonic mean applies whenever the two distances are the same.

Combined work formula

If A finishes work in x days and B in y days, together they take xy/(x+y) days. Using the LCM of the days as total work units simplifies efficiency-based problems.

Effective successive discount

Two successive discounts of d1% and d2% equal a single discount of d1 + d2 − d1d2/100. Discounts are always applied on the marked price, while profit is calculated on cost price.

Probability of at least one

The probability of at least one occurrence equals 1 minus the probability of none occurring. For independent events, multiply the individual non-occurrence probabilities before subtracting from one.

Subject-verb agreement with one of

In 'one of the + plural noun + verb', the verb agrees with 'one' and is singular. Words like each, every, either, and neither also take singular verbs in standard English.

Fixed prepositions in English

Certain verbs take fixed prepositions: depend on, insist on, comply with, capable of, prefer to, married to, superior to, and jealous of. Memorising these prevents common error-spotting mistakes.

Since versus for

'Since' is used with a point of time (since 2010, since Monday), while 'for' is used with a duration (for five years). Both typically pair with present perfect tense.

Redundancy errors in English

Common redundancy errors include 'return back', 'discuss about', 'more better', and 'comprise of'. These are frequent traps in error-spotting and sentence-improvement questions.

Hindi समास types

समास के प्रमुख भेद तत्पुरुष, कर्मधारय, द्विगु, द्वंद्व, बहुव्रीहि और अव्ययीभाव हैं। प्रत्येक में पदों का संबंध और प्रधान पद भिन्न होता है, जिससे समास-विग्रह का प्रश्न हल होता है।

मुहावरे और लोकोक्तियाँ

मुहावरे का अर्थ शब्दों के शाब्दिक अर्थ से भिन्न होता है, जबकि लोकोक्ति पूर्ण वाक्य रूप में लोक-अनुभव प्रकट करती है। दोनों का प्रयोग वाक्य में संदर्भ के अनुसार होता है।

Repo rate

The repo rate is the rate at which the RBI lends short-term funds to banks against government securities. Raising it tightens liquidity and controls inflation; cutting it stimulates credit growth.

CRR and SLR

CRR is the share of net demand and time liabilities kept as cash with the RBI, earning no interest. SLR is held in approved securities and liquid assets; both are reserve requirements, not policy rates.

Priority sector agriculture target

Banks must lend 40% of adjusted net bank credit to priority sectors, including an 18% sub-target for agriculture. Small and marginal farmers get 10% within that agriculture target.

DICGC deposit insurance cover

DICGC insures deposits up to ₹5 lakh per depositor per bank, covering principal plus interest. It applies to commercial banks, RRBs, and cooperative banks, protecting small depositors.

NPA 90-day rule

A loan becomes a non-performing asset when principal or interest is overdue for more than 90 days. NPAs are then classified as substandard, doubtful, or loss assets by ageing.

PM-KISAN scheme

PM-KISAN gives eligible landholding farmer families ₹6,000 per year in three equal instalments of ₹2,000, transferred directly to bank accounts as income support.

Volatile versus non-volatile memory

RAM is volatile memory that loses its contents when power is switched off, while ROM retains data permanently. Cache memory sits between the CPU and RAM for faster access.

Common network protocols

HTTP and HTTPS transfer web pages on ports 80 and 443, FTP transfers files, SMTP sends email, and POP3 or IMAP retrieves email. DNS resolves domain names into IP addresses.

Absolute cell reference in Excel

In Excel, the dollar sign makes a cell reference absolute, as in $A$1, so it does not change when copied. The F4 key toggles between relative and absolute references.