Organic production of lettuce (Lactuca sativa L.)‎

الملخص EN

An experiment was conducted during 2008 growing season at agricultural field, Al-Kefil, Babylon Governorate, Iraq.

The objective of this investigation was to improve the head performance of lettuce grown on soils supplemented by 0, 40, and 60 m2 / h with spraying humus at rates of 0, 1.5, and 3m / l.

Results showed that spraying lettuce plants by 3ml / L humus was the superior.

It exceeded 0 and 1.5 m / L rates by 13.2 and 15.4 % in marketable fresh weight of head, respectively.

Soil supplemented with 60 m2/h of sheep manure resulted in the best marketable head fresh weight.

It exceeded these of 0 and 40 m2 / h rates by 112 and 25 %, respectively.

Plants lettuce grown on soil supplemented with 60 m3 / h of sheep manure and sprayed by3 m / L humus was the best.

It gave the highest fresh weight of marketable head (1294 g).