Which state is the largest producer of cotton in India?

Credit for bringing the green revolution to India goes to

$Sesbania$ and $Trifolium$ are examples of:

Examples of high-yielding and disease-resistant wheat varieties are:

Which vegetables were absent in India before the arrival of the Europeans?

Consider the following four measures $(I-IV)$ that could be taken to successfully grow chickpea in an area where bacterial blight is common.
$I.$ Spray with Bordeaux mixture.
$II.$ Control of the insect vector of the disease pathogen.
$III.$ Use of disease-free seeds only.
$IV.$ Use of varieties resistant to the disease.
Which of the above measures can control the disease?