विशेष रूप से निर्मित टैंकों और तालाबों में मछलियों के प्रजनन और पालन-पोषण को किस नाम से जाना जाता 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?