id	keyword
american_scientific_journal-10781	manure
american_scientific_journal-10781	chicken
american_scientific_journal-10781	biochar
american_scientific_journal-10781	chicken manure
american_scientific_journal-10781	soil
american_scientific_journal-10781	h-1
american_scientific_journal-10781	t h-1
american_scientific_journal-10781	plant
american_scientific_journal-10781	cauliflower
american_scientific_journal-10781	effect
american_scientific_journal-10781	growth