diff --git a/frontend/src/app/fertilizer/_components/FertilizerEditPage.tsx b/frontend/src/app/fertilizer/_components/FertilizerEditPage.tsx
index 0b2d029..0b25f0a 100644
--- a/frontend/src/app/fertilizer/_components/FertilizerEditPage.tsx
+++ b/frontend/src/app/fertilizer/_components/FertilizerEditPage.tsx
@@ -187,9 +187,10 @@ export default function FertilizerEditPage({ planId }: { planId?: number }) {
 
     const targetFields = calcNewOnly
       ? selectedFields.filter((f) => {
-          const hasAdjusted = adjusted[f.id]?.[setting.fertilizer_id] !== undefined;
-          const hasCalc = calcMatrix[f.id]?.[setting.fertilizer_id] !== undefined;
-          return !hasAdjusted && !hasCalc;
+          const adjVal = adjusted[f.id]?.[setting.fertilizer_id];
+          const calcVal = calcMatrix[f.id]?.[setting.fertilizer_id];
+          const inputValue = adjVal !== undefined ? adjVal : (calcVal ?? '');
+          return inputValue === '';
         })
       : selectedFields;
 
@@ -214,19 +215,7 @@ export default function FertilizerEditPage({ planId }: { planId?: number }) {
         return next;
       });
 
-      // adjusted と丸め状態をリセット（新しい計算結果を再丸めさせる）
-      setAdjusted((prev) => {
-        const next = { ...prev };
-        results.forEach(({ field_id }) => {
-          if (next[field_id]) {
-            const row = { ...next[field_id] };
-            delete row[setting.fertilizer_id];
-            next[field_id] = row;
-          }
-        });
-        return next;
-      });
-      setRoundedColumns((prev) => { const next = new Set(prev); next.delete(setting.fertilizer_id); return next; });
+      // adjusted は保持する（テキストボックスにDB/確定値を維持し、ラベルに計算結果を表示）
     } catch (e: unknown) {
       const err = e as { response?: { data?: { error?: string } } };
       alert(err.response?.data?.error ?? '計算に失敗しました');