Author Question: Grass clippings from a healthy lawn can be expected to contain approximately ________ N (on a dry ... (Read 135 times)

audie · **on:** Jul 22, 2018

Grass clippings from a healthy lawn can be expected to contain approximately ________ N (on a dry weight basis).

A) 3.0 B) 0.2 C) 0.5 D) 0.01 E) 7.5

Question 2

Of the various types of drain systems, open ditch systems are most practical and economical for use on:

A) soils which do not freeze during the winter.
B) Vertisols.
C) clay soils with poor drainage.
D) soils with a deep water table.
E) poorly drained soils with sandy profiles.