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What are the optimum pH required for Guava?

Canopy temperature can be used as a potential indicator for scheduling irrigation to crops. It can be measured by which of the following instrument?

Germination percentage of wheat crop is ______

Under which climatic conditions do the laeterite soils develop

Which of the following is non- expanding type clay mineral?

Prosopis cinerea and Cenchrus ciliaris are good fodder tree + grass combination for

Nitrites are oxidised to nitrates by which microorganism?

Which element is responsible for nodulation in legumes?      

What are the activities of plants shown during severe drought?

Francis formula is given by