Agricultural Practices in India

Masahat is an Arabic term used in medieval Indian land revenue systems that refers to the measurement or area of land. It was the fundamental unit for assessing and calculating land revenue during the Delhi Sultanate period. The other options describe different concepts: infertile land would be called 'banjar' or similar terms, documents of land revenue were called 'qaul' or 'parwana', and excess revenue demands had different terminology.

Paddy (rice) occupies the maximum irrigated area among crops in India. Rice cultivation requires substantial water resources and is primarily grown in irrigated conditions to ensure consistent yields. It covers more irrigated land than wheat, sugarcane, or potatoes due to its staple food status and high water requirements.

Under irrigated conditions, jute is typically rotated with crops like paddy, wheat, potato, pulses, and mustard. The option A (jute-paddy-mustard, jute-paddy-pulses, jute-paddy) represents rotation sequences that are commonly practiced under rainfed conditions rather than irrigated conditions. Irrigated jute cultivation allows more intensive cropping patterns with high-value crops like potato and wheat.

In soil science and agriculture, land that becomes unfit for cultivation due to erosion, waterlogging, or other degradation is termed as 'bad land'. This is standard terminology in land classification.

Rice is a water-intensive Kharif crop requiring substantial rainfall. 100 cm is the standard minimum threshold cited in agricultural geography textbooks. Options A, B, and D (120, 150, 130 cm) represent higher thresholds that are not the standard answer.

Tea, coffee, banana, rubber, and sugarcane are perennial crops grown on large estates called plantations. They are not seasonal crops like kharif (monsoon), rabi (winter), or zaid (summer). Plantation crops require years to mature and produce.

Zaid crops are grown in the short summer season between Rabi (winter) and Kharif (monsoon) seasons. Watermelon, muskmelon, cucumber, vegetables, and fodder crops are classic examples of Zaid crops grown from March to June.

The food production in 1985-86 increased due to all of the above factors.

Wheat is Australia's most important grain crop and a major agricultural export. The country has extensive wheat-growing regions, particularly in the wheat belt of Western Australia and the Murray-Darling basin. Rice and maize are not major crops, and potatoes, while grown, are not the chief crop.

Rice is the dominant food grain grown in China, with the country being the world's largest producer. China's warm, humid climate and abundant water resources in regions like the Yangtze River basin are ideal for rice cultivation. While maize, barley, and rye are also grown, rice production far exceeds them in quantity.

As one travels from Kolkata to Delhi through the Gangetic plain, the climate becomes drier and more continental. West Bengal (near Kolkata) has high rainfall suitable for rice, while areas toward Delhi have lower rainfall more suitable for wheat. Thus wheat cultivation increases.

The United States is the world's largest producer of maize (corn), which is its most significant crop by volume. Maize is grown extensively across the Midwest, known as the "Corn Belt." While cotton, barley, and rice are also important US crops, none match maize in terms of total production volume or agricultural acreage dedicated to its cultivation.

Tobacco cannot be grown in alluvial soil.