पूर्वोत्तर भारत में प्रचलित 'झूम खेती' (झूमिंग) निम्नलिखित में से किस कृषि प्रणाली का एक प्रकार है?

Soyabean cultivation in Madhya Pradesh was first started in which district?

Which of the following is primarily classified as a commercial cash crop?

Which of the following modern agricultural implements is NOT typically used in primitive subsistence farming?