Pyrazole derivatives and herbicides containing the same

A pyrazole compound of the formula (XI), ##STR122## wherein R.sup.11 is a C.sub.1 -C.sub.6 alkyl group, each of R.sup.12, R.sup.13, R.sup.14 and R.sup.15 is independently hydrogen or a C.sub.1 -C.sub.4 alkyl group,

• R.sup.16 is a C.sub.1 -C.sub.4 alkyl group,
• R.sup.17 is a hydrogen or C.sub.1 -C.sub.4 alkyl group,
• X.sup.3 is a C.sub.1 -C.sub.4 alkyl group or a halogen atom,
• p is an integer of 0, 1, or 2,
• A.sup.2 is at least one group selected from ##STR123## and --CR.sup.18 R.sup.19, in which each of R.sup.18 and R.sup.19 is independently hydrogen or a C.sub.1 -C.sub.4 alkyl group, k is the number of methylene chains and is an integer of 0 to 3, and
• B is selected from a C.sub.1 -C.sub.12 alkyl group, a cycloalkyl group and a group of ##STR124## in which Y is hydrogen, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group, a C.sub.1 -C.sub.4 haloalkyl group, nitro or a halogen atom, and
• m is an integer of 1 or 2.