12 of 8 - 9 ÷ 3 × 16 - 17 + 6 of 4 -

What type of vegetables are commonly grown hydroponically under controlled environments?

Rice variety developed by a cross between Pyzum and BPT 5204 is

H⁺ and Al³⁺ ions present in non-exchangeable form with organic matter and silicate clays and aluminum hydroxyl ions account for

Pure liming materials

Name the Grape training system where grapevine are connected in a T trellis system and is used for moderately vigorous varieties of grapes. 

Which nutrient stimulates the root growth of a plant?

Which nutrient deficiency is responsible for "Khaira disease" in paddy?

Which of the following is not naturally distributed in India? 

Where is Indian institute of vegetable research situated?