Table 2 Different experimental treatments.

From: Impact of straw return and nitrogen fertilizer on photosynthesis and yield of red kidney beans

Straw return methods

Nitrogen fertilization levels (kg/ha)

Treatment

No straw return (NST)

0

NST + N0

45

NST + N45

90

NST + N90

135

NST + N135

Straw return (ST)

0

ST + N0

45

ST + N45

90

ST + N90

135

ST + N135