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I n t r o d u c t i o n .2. E x p e r i m e n t a l m e t h o d s . 3. P l a n t c h a r a c t e r s r e l a t e d to t e n d e n c y to lodging. 4. Effect of n i t r o g e n n u t r i t i o n on lodging a n d on p l a n t c h a r a c t e r s r e l a t e d to t e n d e n c y to lodging. E f f e c t of p o t a s s i u m n u t r i t i o n . 6. Effect of p h o s p h o r u s n u t r i t i o n .7. E f f e c t of soil-pH.8. E f f e c t of soil s t r u c t u r e . 9. Effect of lodging on yield. 10. Discussion. 11. S u m m a r y .

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