The increase in food production,in addition to the use of improved crop varieties,was due to $..........$ and $..........$.

  • A
    Better management practices and organic farming
  • B
    Agrochemicals and natural fertilizers
  • C
    Better management practices and agrochemicals
  • D
    Organic farming and environmental conditions

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Similar Questions

Green manuring enhances crop yield by

$A$: Improved varieties with genetic variations can be obtained through plant breeding.
$R$: The main objectives of plant breeding are similar to those of animal breeding.

Which of the following fish is introduced in ponds to control or eliminate the vector responsible for the transmission of malaria and filariasis?

The offspring produced from the cross between two pure parents are more vigorous and high-yielding. This phenomenon is known as:

Match the names given under Column-$I$ with their relations given under Column-$II$, and choose the answer which gives the correct combination of the alphabets of the two columns.
Column-$I$ (Name)Column-$II$ (Relations)
$A$. Bombyx mori$P$. Disease of mulberry
$B$. Morus alba$Q$. Centre where silkworm eggs are produced and supplied
$C$. Grainage$R$. Silk moth
$D$. Powdery mildew$S$. Mulberry plant
$T$. Freshly hatched silkworm

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